Your clue to manage and treat bad Nematodes is a wealth of information to me, I brought in bad Nematodes into my compound here in Nigeria through bad seeds. I've gotten French Marigold & Mustard green & I'm off to do as you did, thanks plenty. 👏👏👏😀
Hope it works well for you there. The trick is to keep them moist once you turn them in. Helps them to breakdown & release the compounds that kill the buggers. Cheers SL. 👍
We love the mustard greens.. have 3 different lots planted out that we pick from all the time.. I actually like the flowers the best :) Thanks & have a great one..
That's what I had on my yardlong beans this year. The leaves turned yellowish to brown. I decided to pull out all my yardlong beans yesterday. Thanks for the info!
I tossed a few flower heads in for the girls when I dug them through the barrel.. They got stuck right into them so will be sharing a few with them more often.. Thanks.. Rob
The beneficial insect side of things was the reason we grew them at our last place.. Started to add them to salads along with a few other flowers we grew but have only started to grow them here over the past year.. Cant wait to make black mint sauce from the stinking Rodger later on in the year.. Friends used to think I was strange as I liked the smell :D Cheers John...
We have added them to salads in the past but not for ages.. Used to add them with the nasturtiums when we grew them at our last place :) Thanks & have a good one..
Our family grew just the plants they were to eat :/ They were never real big on companion planting or mixing it up, the veggie patch had straight rows neatly planted crops as I remember it as a kid.. We now have these guys popping up everywhere :) Is going to be a colourful garden come spring.. Cheers.. Rob.
THANK YOU FOR THIS VIDEO! when I used to garden I had an excellent book about 'companion planting' & french marigolds, nasturtiums & Cosmos are the only ones I still remember as being beneficial because of their companions-insect, larvae, etc that complimented the other plants as well. I wish I remembered the name of the book..
I spent 12 years in Victoria (Australia) and had no nematode probs. Move back to S.E.Queensland (Australia) and after 2.5 years, BAM! French Marigolds to the rescue!
They are a warmer area pest Dale.. They get them really bad down South in the US from what I have seen.. That's where the bulk of the research I have read comes from.. Cheers sir & have a great one :)
Beans are also legumes & can have sizable nodules form on their roots created by a bacteria called "rhizobia".. They use these nodules to store nitrogen the plant extracts from the atmosphere & are a good thing for the plant & soil.. I saying that though, we have lost a few beans & peas (also legumes) to the root knot nematodes.. There is a big difference in appearance with the nematode galls looking very disfigured & cracked if that makes sense.. Hope that helps.. Cheers, Rob.
That's what I have been told too... Am hoping that as our beds are a "closed system" of sorts that we might have a chance & totally eradicating them.. I might be dreaming but it might just work.. Cheers & have a great one..
:D Thanks Elyse.. Shall be planting on mass to try & knock them off.. Good luck with the aphids & flea beetles.. So far the lady bugs have been keeping the aphids under control for us.. Have a great one..
Canola is a brassica so that makes sense Gardeninggirl.. I have found all the brassicas get left alone by the little blighters.. The African marigolds I tried first died off very quickly & I am thinking that they were no use at all... I didn't check the roots but wish I did now just to see if they were done in by them.. Thanks & have a great one..
Told you so :D I just leave them there in the fall, winter takes care of them for me. In the spring everything is rotted down. One marigold per square meter is all I plant and it works beautifully! Now if I could have the same sucess rate with aphids, flea beetle...
You would probably get away with doing a rotation of them through the beds after the first season if you see damage.. I think most soils blends would come fairly clean as they are mostly composted materials going by what we have received.. Going to use some of your mini white eggplant seed to test the barrel out in a few weeks ;) Thanks again.. Cheers Sir & have fun setting up the patch :)
This is great information. Thanks. I purchased 2 different types of marigolds for my garden and one type did not do well in the garden so I was going to try to find a marigold that worked. I am going to try the ones you mentioned and hopefully have great success. Thank you for the information. Great video!
From what others have told me that have used this method for a few years it will never kill them all off, I'm just hoping that the wicking beds make it a bit easier to control them.. I suppose only time will really tell & by the looks of the roots on the tomatoes I am encouraged :) Thanks Greg & have a good one :)
Probably would work & is taking the mulching method to the next level :) Would take a while to do up all our beds though... Thanks & have a great one..
I have read that some mycelium attacks them but not sure how well it would grow in the soil beds, just don't know enough about it. Thanks for that & shall have a look into Oyster mushies.. Cheers & have a great one..
Hope they grow well for you April.. We tried the short African marigolds here first & I think the bugs ate more of them than any other plant :D The French ones appear to do the job so much better... Hope all's well & have a great one :)
You can use the petals in salads so they can contribute to food while providing a benefit in repeling the nematode as well. I like having some flowers to attract and provide nectar for predatory insects as well :)
Great info. I plan on growing marigolds when my tomatoes finish up. "Tangerine Gem" and hybrid are two types to avoid - they can actually increase nematodes. I also read that planting canola as a winter cover crop can help in the control. The molasses and neem tricks didn't really work for me either.
Thanks Rob for your videos on Nematodes and Marigold control measures. I have found them very helpful and informative. I have just harvested a bunch of deformed carrots with the characteristic hairy galls. I will now try a Marigold crop.
Would love to know how they marigolds work for you George.. They work well as a treatment here for us but have been told by others they don't work.. Cheers mate & have fun in the patch..
RobBobs Backyard Farming Thanks Rob. I actually haven't started with the marigolds yet. I am trying heat solarisation at the moment, using a double layer of clear plastic. Mainly because I got the plastic free from packaging. Not sure if it will work, but having the soil fallow and completely plant free will probably help anyway.
George Gibson Don't forget about the mustard greens George.. They work fantastically too + you get a crop while you're at it.. Hope it goes well for you mate..
RobBobs Backyard Farming I will keep the mustard greens in mind, now you mention it, it would certainly be nice to keep the space productive. I was even thinking of swapping all the old soil out for new, and letting the old soil rest (and nematodes starve) in a pile out of the way, before using it again. But I don't think I have the energy for all that digging.
I have been adding the greens of both plants the the worm barrels here as well thinking it might help when it gets added to the beds but I really have no idea how long the AT will stay active for in the castings.. I don't think it could hurt just in case there are some in the worm farms as well.. I have wondered if there could be some brought in with the manures we purchase & feed the worms.. Cheers.. Rob
The main 2 varieties I have seen sold here are sold here as French & African.. I did mention in the clip that they come from The Americas but didn't realised they were such an important flower in Mexico, thanks for that.. Have you tried using the Black mint paste ? I was told it was quite popular in Central & South America.. Thanks again, Cheers..
We always had marigolds in our garden growing up. Dad said it was because his mom demanded it because her father demanded it and no one knew why. Everyone in our family always has marigolds in the beds. Its just something we always did.
:D Can get tricky trying to post links here :D Couldn't get that link to work (I'm just as bad :D ) but searched & found loads of helpful information on the site to do with the rye & RK nematodes.. Thanks again for all the help.. All the best Granny Bird :) Rob.
It might do the trick but I think you would get better results by digging it through.. I removed 15cm/6" of soil, placed in the marigolds then covered it back up & watered it well.. Fairly sure that should do the trick... Watering the soil well would help flush the alpha terthienyl into the lower levels I think.. Cheers Sir
@@RobsAquaponics Can I grow those mustard greens from the little mustard seeds at the supermarket? And thanks for your reply even though I'm now seeing the video from so many years ago 😊
@@nicolehowell6064 I haven't tried myself Nicole. Might pay to look for seeds used for sprouting as they will definitely not be treated & will germinate. 👍
Marigold and garlic are good to combat pests. I just plant both in various spots in my garden and I never have problems against snails, mealybugs, caterpillars unlike in the past.
They have them in the southern states in the US & other warmer spots around the world.. My parents who are a 10 min drive from here don't have an issue with them so even in a region there can be spots without them.. Doesn't help that we let them build up in number over the past few years.. Cheers.. Rob
Interesting. Our SUN project (Perth) logo was made from a foto of a large spinach bed with French Marigolds spelling SUN. We grow everything in the soil so are susceptible to nematodes. My eggplants where there are no marigolds or mustard are looking worse than where there is mustard (we planted heaps and thriving). I am going to try adding both the Ms to our compost and worm farms and see the effects next season. Will also plant some around the weaker eggplants and see if that has an effect.
Found your vlog looking for help with nematodes. Thanks for posting! Great information, going to try the mustard greens because my marigolds won't even grow here in Florida. Fall is coming and mustard greens might make it now that it's not so hot. Blessings.
We seeded 14 raised beds with mustard seed as a winter crop. ( We leave in San Diego Ca. not a real winter ) So far with the summer crops in in the boxes now, we have only had nematode problems in 3 of the boxes as of yet. I'm now thinking of seeding the boxes with mustard and French marigold seed...Kind of a double punch...
We are in San Diego county too and have terrible root knot nematodes in all our raised beds, in many pots and in the earth. I have no idea where they were brought in but our beds are not all in one location and still with all the care i take to clean tools, keep tools in their own location so one shovel never is used anywhere except in the northeast corner of the property. I have done everything suggested and it is a continual battle every year. The early in the season veggies do very well like my peas were extraordinary this year and no nematodes. I harvested them all then planted cucumbers and squash in the same location and just today I dug up the dead cucumber plants as they stopped producing and were wilting bad. When I pulled them out they had root knot nematode. I only plant from seed, never from potted seedlings from the store. So now today I will finish this bed with disappointment as I had planned to grow some winter veggies. Now I can't and will have to grow mustard greens and french marigolds instead. I also plan to grow California black eyed peas as they are nematode resistant! I planted asparagus in one half of one of my beds because asparagus is nematode resistant. It is year 3 for the asparagus and it did great, no issues.
From the articles I have read alpha terthienyl will kill them but as to how many & over what time frame that was hard to pin down. I don't think it will work as effectively in the larger beds due to their size & will be an ongoing rotational process. I figure some will always be able to hide. Fingers are crossed that it will work in the barrels due to them being a smaller confined space. TBC
I have had people send me a link to footage of fungi feeding on a nematode when I did a previous clip on them but couldn't find it again to add to the description of this one.. A poster below mentioned that oyster mushroom can help control them as well.. Thanks :)
Thank you for addressing these stinking root knot nematodes. I moved from Wisconsin to Northwest Florida zone 8a. Have never seen root knot nematodes in Wisonsin, black fertile soil. Florida, sandy clay compacted soil. Doing biochar, composting, shrimp shell meal, digging holes in the soil and putting in better soil. When the plants die they look like they are not getting enough water. Then you water them and I think the nematodes like that and kill the plant more. Going to try the mustard greens and marigolds this year!
I've also heard that the chitin in the shrimp shell will help keep them under control. 👍 I found that the mustard greens worked best in my raised beds. Have you had much success with either so far?
I wonder if dried Marigold can be brewed up as a tea to add to water in hydroponics? I know a few sources that sell it online on Etsy for health purposes.
I don't think it would be the right sort of environment for the root knot nematodes to live in.. I'm sure there would be some types that would live in there as there are thousands of different types world wide.. Only a few are problematic for us gardeners.. Hope that helps Mark.. Cheers..
A few more questions Rob: Rob do you practice crop rotation to avoid pest build up? Have you tried a biological control method, like innoculating the roots with benifical bacteria/fungi before planting them? Have you tried grafting your tomatoes onto a resistant rootstock? Maybe using a combination of them all, including the neem cake, will help?
A lot of the information out there on their control came from Florida so it looks like you get it as bad as us here.. I wasn't expecting it to work as well as it did in the barrel to tell you the truth.. I have some tomato plants sprouted in the bed with mustard down the back so it will be interesting to see how the roots look after they have been in there a bit longer.. Hope it goes well for you & have a great one.. Rob
Hey Rob, I've actually just started a similar rotation program of french marigolds for my beds. I'm just curious how much success you've had since you posted this video. I do no dig gardening, so I'm going to try to do this without digging them in at first and see if that works, perhaps just chop and drop and cover with compost.
Hi Davide. I had better success with mustard greens at keeping the beds relatively RK nematode free. I grew a carpet of mustard greens to about 20cm/89" tall. I then mulched them up & dug them through the bed. Is a good idea to keep the bed moist to help the greens decompose so they can release the compounds that kill of the RK nematodes. Hope that helps some & you can get them under control. Cheers mate.
@@RobsAquaponics thanks Rob, any particular variety of mustard greens that has worked for you? I might try a 1-2 punch, marigolds in the summer then mustard greens right after.
B just pipped up & said "PLEASE, I HOPE NOT!!" :D Just thought I'd add that there are thousands of types of nematodes living in many different environments & not all are bad.. Hope that helps a bit more..
There are thousands of different types of nematodes living in many different environments around the world & not all are bad.. Some will even hunt down these guys.. I did a quick search & it looks like there are some root knot types in Europe but they are not as bad an issue there.. I have read that they are found in western Europe around Turkey... Hope that helps..
Using the mustard plants as green manure worked the best in our wicking beds & barrels. I also planted other brassicas in the beds to try & break the cycle. To tell you the truth, I'm not sure what happened to the eggplants that went into the barrel afterwards. Cheers Micha.
Have read a bit about the benefits of using the chitin rich crustacean based fertilisers. I couldn't find any here in Oz when I looked. :/ I do like to add the prawn/shrimp shells to the compost though. Cheers & happy growing.
Rob - my Florida garden was completely overtaken by nematodes. I want to plant in the fall - can I just plant tomatoes, green beans, etc, with marigold plants or should I just do a full crop of marigolds for a season or two first?
Hey Rhonda.. You have a similar climate to us so can you grow all year round? If the ground is heavily infested with them I think you're best to do a green manure crop of mustard greens as they will grow much faster than the marigolds.. Once they are about a foot tall dig them through then let them compost in the soil for a week or 2 then plant out the veggies.. You could have some marigolds growing in a different spot in the yard like we do & harvest them for the veggie patch at a later date.. From what I've seen with other garden beds here, just planting the marigolds & growing next to them isn't a sure fire way of keeping them at bay.. Worked really well in the barrel for some reason but not our larger beds as I found out after pulling some beets a few weeks ago.. Hope that helps some..
thanks I used Mary gold since 2010 it's good ulso I used radish it works but for 2 years only the salad better than radish leafs of sesame better than all. ulso artimesia is good. sorry for poor English. Khalid Sana'a Yemen
Using mustard greens as a green manure crop looks to be the best method for us. 👍 I have a bed that I need to treat at the moment & will be using a mix of BQ & mustard green mulch to treat it. greenharvest.com.au/SeedOrganic/CoverCrops/GreenManureCoolSeason.html Cheers.
Would this work if you simply mowed the foliage but did NOT incorporate into the soil? I am thinking of a cover crop I can seed over a thin area of very stressed, thin stand of zoysia grass to give it a break over the winter, and then mowing the foliage with a mulching blade in the spring.
I was told that french marigolds have more of the active constituents. I found that growing a green manure crop of mustard greens & digging that through the wicking beds did a better job if that helps at all.
Hi Tracy.. Not too good but for different reasons :/ We had some sort of virus hit that part of the garden & it infected all the nightshades we had growing.. Lost 2 lots of potatoes, a couple of tomatoes & the eggplant :/ Was really annoyed to as we were counting on them for our Summer crop but such is.. Ended up planting out beetroot & ginger into that barrel & both re doing fine with no sign of nematode activity.. Will be sowing more marigolds in there after this harvest as a green manure just to make sure though ;) Other beds we have treated the same way have all given us good crops.. Hope that helps.. Rob..
Great conditions for them here... Mind you, mum & dad live 10 minutes away & don't have any problems with them at all.. Have you tried mustard greens too ??
Please read. I had a lot of problems with this pest I did and brick pathway from the house to the canal. After filling in the space with cement I saw a bunch of dead earth worms. I was saddened. However a bell went off in my head. This can kill the nematodes. So I've tried a cement mix. Like two cups of cement and five gallon water. It's the best accident ever happened. This is my experience. I don't know the negative effect on the environment. However I will never stop using it
Hi rob me thinking as i am setting up a new system and will be importing some soils into my system i may as well plant out all my beds French marigolds & mustard greens first !! saves being upset laters ?? your thoughts mate ??
Thank you Rob, I was already aware of the French Marigolds effect on the Nematodes but your put it together in an excellent way. Have a great day, keep up the good work. Can I ask, how do you tell the difference between nodules of the Nematodes and a nodules from a root that has been innoculated with benifical Mycorrhizal fungi? They look very similar, how would you describe their difference?
Morning Andrew & great question.. The skin of the nematode galls & the root section around them look blistered & split in places.. Mycorrhiza nodes are normally smooth & don't tent to split sections of the roots open as far a I know.. A side by side comparison picture would be handy & will try to remember to take one next time I see some roots with fungal activity on them.. Hope that helps you out some..
RobBobs Backyard Farming Thanks for the response. Also I noticed in your video you said you used Neem Oil in the past but it's Neem Cake mixed with the soil what you need, have you tried that yet?
Andrew Towell From what I've been told the cake is by far the best option where neem is involved but not something I have access too.. Neem oil apparently does work but in higher concentrations than I could use at the time.. I think it's much better to use a resource like the marigolds & mustards that can be grown on site & used to condition the soil as well..
HI Rob Just wanted to pass on something I was told apparently using Neem oil is hit and miss due to the neem not being stable so the benefit is never definite... heard this from a sales man though so mmmm. Anyway I have done the same as you, just waiting for my marigold and mustard seeds to take now. Good luck hope those nematodes stay gone.
Hey Mel.. Have over 2L of neem oil that is probably no good now.. I bought in bulk after having a very long chat to a distributor & never once did he mention that the azadirachtin only has a shelf life of about 2 years if kept in a cool dark spot.. I found out after my bulk purchase unfortunately but you would think the would mention that.. Is still OK to use like a white oil but won't have a high level of the active constituent :-/ Have found that the mustards & marigolds do a great job though so will keep using them from now on.. Cheers,
hi Bob, thaht flower are originals from México, his name its no french marigold, it cempazuchiltl flower, its meaning is the flower of the dead, the altars used for dead one ancient Mexican tradition,
I think there is a variety that can infect citrus too Dennis. Found this on the Victorian Gov site. agriculture.vic.gov.au/agriculture/pests-diseases-and-weeds/pest-insects-and-mites/citrus-and-grapevine-nematodes HTH. 👍
I found that the green manure mustard crop did the best job. I did mention it in follow up garden walk around clips from memory but it would be a bit hard for a viewer to stumble upon that methinks. 😉👍 Cheers.
hi..I transferred my marigold plant in new pot but little root I can see or top surface.. should I cover them with more soil ? ot isit fine with that ?
Result the bud. Looked nice and were destruction to the nematodes. Can't be bad then hey. Uncle was right. So when you dig then through do u mean u turn the soil over and cover them? If some one was using a no dig system do you think cutting them and laying them on top would work too?
+MonikaLaleczka The French have more of the active ingredient than others of the short ornamental varieties from what I've read. The Southern Cone Marigold/Black Mint (tagetes minuta) does a better job according to one of the gardening gurus from Gardening Australia. It's a tall plant that does a better job dug through as a green manure apparently. Hope that helps some Monika 👍😊
Hi Rob, just discovered your video here after finding my carrots having a mild attack of RK nematodes 😣 first time for me. I will definately try the marigolds and mustard greens, thank you for the advice. My question is can i still eat the carrots or do I have to bin them.? I presume the infected roots will have to go in the rubbish bin and not the compost?! Appreciate any advice.
I would munch on them if they were mildly affected. I would definitely bin any scraps or discarded roots though as composting them would quite likely keep them moving around your patch. BTW, I found mustard greens to be a much better control method.
@@RobsAquaponics thanks for the reply Rob. Your advice has been so helpful to me. I've just bought the marigolds and mustard greens and now I'll go out and get some more mustard greens so going to hit them with everything. 😍
Hi There.. Sorry to hear you've had problems.. I did say they were resistant & not immune to the RK nematodes.. The seriousness of the infestation would also come into play I think.. From what I've read broccoli & Brussels sprouts are the most resistant brassicas.. Have also had no issues with kohlrabi, Scottish curl & Tuscan kale in beds that have infected plants in the previous rotation here in our patch.. Cheers..
Marigolds are becoming much more prominent around and in our Napa Vineyards.We also have plenty of mustard so I suppose we are the nematode destroyer "par excellence," as we make the premium wines, toof
+Richards Lyon MD Nice one mate. I think mustards do a better job on the varieties we get here but the marigolds do put out a great display. Cheers mate.
Your clue to manage and treat bad Nematodes is a wealth of information to me, I brought in bad Nematodes into my compound here in Nigeria through bad seeds. I've gotten French Marigold & Mustard green & I'm off to do as you did, thanks plenty. 👏👏👏😀
where do you get your mustard and marigold
In my younger years my aunt loved mustard & grew a ‘heavy tonnage’ of it every year. I never planted greens, just mooched from her. Lol. She lived
Hope it works well for you there. The trick is to keep them moist once you turn them in. Helps them to breakdown & release the compounds that kill the buggers.
Cheers SL. 👍
We love the mustard greens.. have 3 different lots planted out that we pick from all the time.. I actually like the flowers the best :)
Thanks & have a great one..
That's what I had on my yardlong beans this year. The leaves turned yellowish to brown. I decided to pull out all my yardlong beans yesterday. Thanks for the info!
I tossed a few flower heads in for the girls when I dug them through the barrel.. They got stuck right into them so will be sharing a few with them more often..
Thanks..
Rob
The beneficial insect side of things was the reason we grew them at our last place.. Started to add them to salads along with a few other flowers we grew but have only started to grow them here over the past year..
Cant wait to make black mint sauce from the stinking Rodger later on in the year.. Friends used to think I was strange as I liked the smell :D
Cheers John...
We have added them to salads in the past but not for ages.. Used to add them with the nasturtiums when we grew them at our last place :)
Thanks & have a good one..
Our family grew just the plants they were to eat :/ They were never real big on companion planting or mixing it up, the veggie patch had straight rows neatly planted crops as I remember it as a kid.. We now have these guys popping up everywhere :) Is going to be a colourful garden come spring..
Cheers..
Rob.
THANK YOU FOR THIS VIDEO! when I used to garden I had an excellent book about 'companion planting' & french marigolds, nasturtiums & Cosmos are the only ones I still remember as being beneficial because of their companions-insect, larvae, etc that complimented the other plants as well. I wish I remembered the name of the book..
I spent 12 years in Victoria (Australia) and had no nematode probs. Move back to S.E.Queensland (Australia) and after 2.5 years, BAM! French Marigolds to the rescue!
They are a warmer area pest Dale.. They get them really bad down South in the US from what I have seen.. That's where the bulk of the research I have read comes from..
Cheers sir & have a great one :)
Beans are also legumes & can have sizable nodules form on their roots created by a bacteria called "rhizobia".. They use these nodules to store nitrogen the plant extracts from the atmosphere & are a good thing for the plant & soil.. I saying that though, we have lost a few beans & peas (also legumes) to the root knot nematodes.. There is a big difference in appearance with the nematode galls looking very disfigured & cracked if that makes sense..
Hope that helps.. Cheers, Rob.
Certainly am :D
After losing a few crops I am mighty grateful to find something that may help control them..
Cheers Sir ..
That's what I have been told too... Am hoping that as our beds are a "closed system" of sorts that we might have a chance & totally eradicating them.. I might be dreaming but it might just work..
Cheers & have a great one..
:D Thanks Elyse.. Shall be planting on mass to try & knock them off..
Good luck with the aphids & flea beetles.. So far the lady bugs have been keeping the aphids under control for us..
Have a great one..
Canola is a brassica so that makes sense Gardeninggirl.. I have found all the brassicas get left alone by the little blighters.. The African marigolds I tried first died off very quickly & I am thinking that they were no use at all... I didn't check the roots but wish I did now just to see if they were done in by them..
Thanks & have a great one..
Told you so :D I just leave them there in the fall, winter takes care of them for me. In the spring everything is rotted down. One marigold per square meter is all I plant and it works beautifully! Now if I could have the same sucess rate with aphids, flea beetle...
You would probably get away with doing a rotation of them through the beds after the first season if you see damage.. I think most soils blends would come fairly clean as they are mostly composted materials going by what we have received..
Going to use some of your mini white eggplant seed to test the barrel out in a few weeks ;) Thanks again..
Cheers Sir & have fun setting up the patch :)
This is great information. Thanks. I purchased 2 different types of marigolds for my garden and one type did not do well in the garden so I was going to try to find a marigold that worked. I am going to try the ones you mentioned and hopefully have great success. Thank you for the information. Great video!
From what others have told me that have used this method for a few years it will never kill them all off, I'm just hoping that the wicking beds make it a bit easier to control them..
I suppose only time will really tell & by the looks of the roots on the tomatoes I am encouraged :)
Thanks Greg & have a good one :)
Probably would work & is taking the mulching method to the next level :) Would take a while to do up all our beds though...
Thanks & have a great one..
Is working so far & fairly certain if we keep up the crop rotation we will stay on top of them :)
Cheers Chris..
I have read that some mycelium attacks them but not sure how well it would grow in the soil beds, just don't know enough about it. Thanks for that & shall have a look into Oyster mushies..
Cheers & have a great one..
Hope they grow well for you April.. We tried the short African marigolds here first & I think the bugs ate more of them than any other plant :D
The French ones appear to do the job so much better...
Hope all's well & have a great one :)
You can use the petals in salads so they can contribute to food while providing a benefit in repeling the nematode as well. I like having some flowers to attract and provide nectar for predatory insects as well :)
Great info. I plan on growing marigolds when my tomatoes finish up. "Tangerine Gem" and hybrid are two types to avoid - they can actually increase nematodes. I also read that planting canola as a winter cover crop can help in the control. The molasses and neem tricks didn't really work for me either.
Thanks Rob for your videos on Nematodes and Marigold control measures.
I have found them very helpful and informative.
I have just harvested a bunch of deformed carrots with the characteristic hairy galls.
I will now try a Marigold crop.
Would love to know how they marigolds work for you George.. They work well as a treatment here for us but have been told by others they don't work..
Cheers mate & have fun in the patch..
RobBobs Backyard Farming Thanks Rob.
I actually haven't started with the marigolds yet.
I am trying heat solarisation at the moment, using a double layer of clear plastic.
Mainly because I got the plastic free from packaging.
Not sure if it will work, but having the soil fallow and completely plant free will probably help anyway.
George Gibson Don't forget about the mustard greens George.. They work fantastically too + you get a crop while you're at it..
Hope it goes well for you mate..
RobBobs Backyard Farming I will keep the mustard greens in mind, now you mention it, it would certainly be nice to keep the space productive.
I was even thinking of swapping all the old soil out for new, and letting the old soil rest (and nematodes starve) in a pile out of the way, before using it again.
But I don't think I have the energy for all that digging.
George Gibson I have thought about solarising the soil in a few beds as well George but my back keeps talking me out of it ;)
I have been adding the greens of both plants the the worm barrels here as well thinking it might help when it gets added to the beds but I really have no idea how long the AT will stay active for in the castings.. I don't think it could hurt just in case there are some in the worm farms as well.. I have wondered if there could be some brought in with the manures we purchase & feed the worms..
Cheers..
Rob
The main 2 varieties I have seen sold here are sold here as French & African.. I did mention in the clip that they come from The Americas but didn't realised they were such an important flower in Mexico, thanks for that.. Have you tried using the Black mint paste ? I was told it was quite popular in Central & South America..
Thanks again, Cheers..
We always had marigolds in our garden growing up. Dad said it was because his mom demanded it because her father demanded it and no one knew why. Everyone in our family always has marigolds in the beds. Its just something we always did.
:D Can get tricky trying to post links here :D
Couldn't get that link to work (I'm just as bad :D ) but searched & found loads of helpful information on the site to do with the rye & RK nematodes..
Thanks again for all the help..
All the best Granny Bird :)
Rob.
It might do the trick but I think you would get better results by digging it through.. I removed 15cm/6" of soil, placed in the marigolds then covered it back up & watered it well.. Fairly sure that should do the trick... Watering the soil well would help flush the alpha terthienyl into the lower levels I think..
Cheers Sir
Thank you for this information .I have them in a few pots and I have lots of French marigolds that are overgrown so I can cut them off and use them 😊
In the end I found that the mustard used as a green manure worked better than the marigold if that helps you down the track Nicole. 👍
@@RobsAquaponics
Can I grow those mustard greens from the little mustard seeds at the supermarket?
And thanks for your reply even though I'm now seeing the video from so many years ago 😊
@@nicolehowell6064 I haven't tried myself Nicole. Might pay to look for seeds used for sprouting as they will definitely not be treated & will germinate. 👍
Marigold and garlic are good to combat pests. I just plant both in various spots in my garden and I never have problems against snails, mealybugs, caterpillars unlike in the past.
Hi there ..
Have had mixed results with using the marigolds against garden pests but know others that swear by them..
Cheers & happy growing,
Rob..
They have them in the southern states in the US & other warmer spots around the world..
My parents who are a 10 min drive from here don't have an issue with them so even in a region there can be spots without them.. Doesn't help that we let them build up in number over the past few years..
Cheers..
Rob
Interesting. Our SUN project (Perth) logo was made from a foto of a large spinach bed with French Marigolds spelling SUN. We grow everything in the soil so are susceptible to nematodes. My eggplants where there are no marigolds or mustard are looking worse than where there is mustard (we planted heaps and thriving). I am going to try adding both the Ms to our compost and worm farms and see the effects next season. Will also plant some around the weaker eggplants and see if that has an effect.
Marigold flowers are a nice addition to salads in small amounts. The petals taste mild and flowery and add a nice color.
Haven't tried them yet but do add a few others like borage & pea flowers.
Cheers.
Found your vlog looking for help with nematodes.
Thanks for posting! Great information, going to try the mustard greens because my marigolds won't even grow here in Florida. Fall is coming and mustard greens might make it now that it's not so hot.
Blessings.
Hope it works well for you folks. 👍
Cheers & happy growing.
We seeded 14 raised beds with mustard seed as a winter crop. ( We leave in San Diego Ca. not a real winter ) So far with the summer crops in in the boxes now, we have only had nematode problems in 3 of the boxes as of yet. I'm now thinking of seeding the boxes with mustard and French marigold seed...Kind of a double punch...
We are in San Diego county too and have terrible root knot nematodes in all our raised beds, in many pots and in the earth. I have no idea where they were brought in but our beds are not all in one location and still with all the care i take to clean tools, keep tools in their own location so one shovel never is used anywhere except in the northeast corner of the property. I have done everything suggested and it is a continual battle every year. The early in the season veggies do very well like my peas were extraordinary this year and no nematodes. I harvested them all then planted cucumbers and squash in the same location and just today I dug up the dead cucumber plants as they stopped producing and were wilting bad. When I pulled them out they had root knot nematode. I only plant from seed, never from potted seedlings from the store. So now today I will finish this bed with disappointment as I had planned to grow some winter veggies. Now I can't and will have to grow mustard greens and french marigolds instead. I also plan to grow California black eyed peas as they are nematode resistant! I planted asparagus in one half of one of my beds because asparagus is nematode resistant. It is year 3 for the asparagus and it did great, no issues.
I have that problem with the winged bean bed .
Now I know what to do😊💚
Glad I could help in some way.
Happy growing.
From the articles I have read alpha terthienyl will kill them but as to how many & over what time frame that was hard to pin down. I don't think it will work as effectively in the larger beds due to their size & will be an ongoing rotational process. I figure some will always be able to hide. Fingers are crossed that it will work in the barrels due to them being a smaller confined space. TBC
I have had people send me a link to footage of fungi feeding on a nematode when I did a previous clip on them but couldn't find it again to add to the description of this one.. A poster below mentioned that oyster mushroom can help control them as well..
Thanks :)
Thank you for addressing these stinking root knot nematodes. I moved from Wisconsin to Northwest Florida zone 8a. Have never seen root knot nematodes in Wisonsin, black fertile soil. Florida, sandy clay compacted soil. Doing biochar, composting, shrimp shell meal, digging holes in the soil and putting in better soil. When the plants die they look like they are not getting enough water. Then you water them and I think the nematodes like that and kill the plant more. Going to try the mustard greens and marigolds this year!
I've also heard that the chitin in the shrimp shell will help keep them under control. 👍
I found that the mustard greens worked best in my raised beds. Have you had much success with either so far?
Thanks for the sub :) Hope you keep enjoying the clips & have fun with the aquaponics build..
Have a great one :)
Hi Rob.
there are good and bad nematodes , when we use the Marigolds are we only killing the bad ones ???
I wonder if dried Marigold can be brewed up as a tea to add to water in hydroponics? I know a few sources that sell it online on Etsy for health purposes.
Had a quick look here & I can't seem to find that variety here in Australia... Does it have another name that you know of ?
Thanks again,
Rob.
Thanks..
Take it easy.. ☺
I don't think it would be the right sort of environment for the root knot nematodes to live in.. I'm sure there would be some types that would live in there as there are thousands of different types world wide.. Only a few are problematic for us gardeners..
Hope that helps Mark..
Cheers..
A few more questions Rob:
Rob do you practice crop rotation to avoid pest build up?
Have you tried a biological control method, like innoculating the roots with benifical bacteria/fungi before planting them?
Have you tried grafting your tomatoes onto a resistant rootstock?
Maybe using a combination of them all, including the neem cake, will help?
A lot of the information out there on their control came from Florida so it looks like you get it as bad as us here..
I wasn't expecting it to work as well as it did in the barrel to tell you the truth.. I have some tomato plants sprouted in the bed with mustard down the back so it will be interesting to see how the roots look after they have been in there a bit longer..
Hope it goes well for you & have a great one..
Rob
Hey Rob, I've actually just started a similar rotation program of french marigolds for my beds. I'm just curious how much success you've had since you posted this video. I do no dig gardening, so I'm going to try to do this without digging them in at first and see if that works, perhaps just chop and drop and cover with compost.
Hi Davide. I had better success with mustard greens at keeping the beds relatively RK nematode free. I grew a carpet of mustard greens to about 20cm/89" tall.
I then mulched them up & dug them through the bed. Is a good idea to keep the bed moist to help the greens decompose so they can release the compounds that kill of the RK nematodes.
Hope that helps some & you can get them under control.
Cheers mate.
@@RobsAquaponics thanks Rob, any particular variety of mustard greens that has worked for you? I might try a 1-2 punch, marigolds in the summer then mustard greens right after.
I used a giant red from memory. 👍
B just pipped up & said "PLEASE, I HOPE NOT!!"
:D
Just thought I'd add that there are thousands of types of nematodes living in many different environments & not all are bad..
Hope that helps a bit more..
There are thousands of different types of nematodes living in many different environments around the world & not all are bad.. Some will even hunt down these guys.. I did a quick search & it looks like there are some root knot types in Europe but they are not as bad an issue there.. I have read that they are found in western Europe around Turkey... Hope that helps..
Did the marigold/mustards work? Did your eggplants turn in that barrel? Thanks for posting!
Using the mustard plants as green manure worked the best in our wicking beds & barrels. I also planted other brassicas in the beds to try & break the cycle.
To tell you the truth, I'm not sure what happened to the eggplants that went into the barrel afterwards.
Cheers Micha.
Very cool sounding bird at 7:08. Thanks
thanks for another great video can you get nematodes in aquaponics?
Elbon cereal rye planted in the fall is also good for controlling nematodes.
Ccould you juice the greens, and the marigolds, mix with water , and drench the pots or garden soil?
I've always used crab or shrimp meal to control nebatodes. I add it every Spring 2 weeks before I plant.
Have read a bit about the benefits of using the chitin rich crustacean based fertilisers. I couldn't find any here in Oz when I looked. :/ I do like to add the prawn/shrimp shells to the compost though.
Cheers & happy growing.
Rob - my Florida garden was completely overtaken by nematodes. I want to plant in the fall - can I just plant tomatoes, green beans, etc, with marigold plants or should I just do a full crop of marigolds for a season or two first?
Hey Rhonda..
You have a similar climate to us so can you grow all year round?
If the ground is heavily infested with them I think you're best to do a green manure crop of mustard greens as they will grow much faster than the marigolds.. Once they are about a foot tall dig them through then let them compost in the soil for a week or 2 then plant out the veggies.. You could have some marigolds growing in a different spot in the yard like we do & harvest them for the veggie patch at a later date..
From what I've seen with other garden beds here, just planting the marigolds & growing next to them isn't a sure fire way of keeping them at bay.. Worked really well in the barrel for some reason but not our larger beds as I found out after pulling some beets a few weeks ago..
Hope that helps some..
Okay - sounds like a plan. Thanks so much for all of the advice!
No problem Rhonda McCoy, hope it works out well for you..
thanks
I used Mary gold since 2010
it's good
ulso I used radish it works but for 2 years only
the salad better than radish
leafs of sesame better than all.
ulso artimesia is good.
sorry for poor English.
Khalid
Sana'a Yemen
Thanks for that Khaled. I find the mustards work best for us here.
Cheers mate.
Hi Rob,
So 7 years on. Which method works the best for the nemotodes out of all the different plants you have tried?
Regards and thanks.
Using mustard greens as a green manure crop looks to be the best method for us. 👍
I have a bed that I need to treat at the moment & will be using a mix of BQ & mustard green mulch to treat it.
greenharvest.com.au/SeedOrganic/CoverCrops/GreenManureCoolSeason.html
Cheers.
Thank you, I'm going to try marigolds.
Good luck!
No problem & hope it helps..
Have you had problems with them yourself ??
hey this awesome but can you clarify for me on this issue do one Gall represent one nematode is in that gall
Would this work if you simply mowed the foliage but did NOT incorporate into the soil? I am thinking of a cover crop I can seed over a thin area of very stressed, thin stand of zoysia grass to give it a break over the winter, and then mowing the foliage with a mulching blade in the spring.
Think ive got Nemtodes in one of my wicking beds so looks like ill be planting some marigolds soon!
What happened with the Aubergiene? Interested as we have this issue in our farm in Ivory coast
Thanks Sir,
My questions are..
Any mariegold or French mariegold?
And have we have to plant in all the wicking beds?
I was told that french marigolds have more of the active constituents. I found that growing a green manure crop of mustard greens & digging that through the wicking beds did a better job if that helps at all.
How did the eggplants do that you planted in that marigold bucket?
Hi Tracy..
Not too good but for different reasons :/ We had some sort of virus hit that part of the garden & it infected all the nightshades we had growing.. Lost 2 lots of potatoes, a couple of tomatoes & the eggplant :/ Was really annoyed to as we were counting on them for our Summer crop but such is..
Ended up planting out beetroot & ginger into that barrel & both re doing fine with no sign of nematode activity.. Will be sowing more marigolds in there after this harvest as a green manure just to make sure though ;) Other beds we have treated the same way have all given us good crops..
Hope that helps..
Rob..
Great conditions for them here... Mind you, mum & dad live 10 minutes away & don't have any problems with them at all.. Have you tried mustard greens too ??
Will drying out the soil in sun kill them . I have nemtodes in 2 -3 pots . And Sun here is too strong 40degree Celcius
I have read that exposing them to sun & drying out the soil will help. Haven't tried it myself as the beds we have contain too much soil.
Please read. I had a lot of problems with this pest I did and brick pathway from the house to the canal. After filling in the space with cement I saw a bunch of dead earth worms. I was saddened. However a bell went off in my head. This can kill the nematodes. So I've tried a cement mix. Like two cups of cement and five gallon water. It's the best accident ever happened. This is my experience. I don't know the negative effect on the environment. However I will never stop using it
Do you pour the cement water mix thoroughly over the soil before planting?? I would maybe pour in the hole before planting??
Hi rob me thinking as i am setting up a new system and will be importing some soils into my system i may as well plant out all my beds French marigolds & mustard greens
first !! saves being upset laters ?? your thoughts mate ??
Does that mean growing garlic also works?
Garlic doesn't work & have seen them be attacked by nematodes. 😕
What about using ground mustard seed?
It might do the job. I'm not sure how much active constituent would be in there so you might want to check that out first. 👍
Thank you Rob, I was already aware of the French Marigolds effect on the Nematodes but your put it together in an excellent way. Have a great day, keep up the good work.
Can I ask, how do you tell the difference between nodules of the Nematodes and a nodules from a root that has been innoculated with benifical Mycorrhizal fungi? They look very similar, how would you describe their difference?
Morning Andrew & great question..
The skin of the nematode galls & the root section around them look blistered & split in places.. Mycorrhiza nodes are normally smooth & don't tent to split sections of the roots open as far a I know.. A side by side comparison picture would be handy & will try to remember to take one next time I see some roots with fungal activity on them..
Hope that helps you out some..
RobBobs Backyard Farming
Thanks for the response. Also I noticed in your video you said you used Neem Oil in the past but it's Neem Cake mixed with the soil what you need, have you tried that yet?
Andrew Towell From what I've been told the cake is by far the best option where neem is involved but not something I have access too.. Neem oil apparently does work but in higher concentrations than I could use at the time.. I think it's much better to use a resource like the marigolds & mustards that can be grown on site & used to condition the soil as well..
RobBobs Backyard Farming
Good point Rob, use what you can make your self :)
HI Rob
Just wanted to pass on something I was told apparently using Neem oil is hit and miss due to the neem not being stable so the benefit is never definite... heard this from a sales man though so mmmm. Anyway I have done the same as you, just waiting for my marigold and mustard seeds to take now. Good luck hope those nematodes stay gone.
Hey Mel..
Have over 2L of neem oil that is probably no good now.. I bought in bulk after having a very long chat to a distributor & never once did he mention that the azadirachtin only has a shelf life of about 2 years if kept in a cool dark spot.. I found out after my bulk purchase unfortunately but you would think the would mention that.. Is still OK to use like a white oil but won't have a high level of the active constituent :-/
Have found that the mustards & marigolds do a great job though so will keep using them from now on..
Cheers,
Did you use the neem oil regularly or just one time application, because it does degrade over time.
It should be used regularly from what I've read. The neem cake works well too if you have access to it apparently.
Any feedback on neem cake? Just read about but have no other info from my long time UA-cam sources. Cheers from hot Western Australia.
Ever have any nematode problems in the aquaponic beds?
Hi do the yellow marigolds work the same as the French marigolds, the flower heads are orange, mine are yellow
French are said to work best but I would think there would be some active constituents in the yellow as well.
Need some seeds ?? :D
They are popping up in the lawn now Hamish..
Cheers
hi Bob, thaht flower are originals from México, his name its no french marigold, it cempazuchiltl flower, its meaning is the flower of the dead, the altars used for dead one ancient Mexican tradition,
Wonderful information. Thank you. Question: Can citrus plants be infected by nematodes too?
I think there is a variety that can infect citrus too Dennis. Found this on the Victorian Gov site.
agriculture.vic.gov.au/agriculture/pests-diseases-and-weeds/pest-insects-and-mites/citrus-and-grapevine-nematodes
HTH. 👍
So how did this work out?
I found that the green manure mustard crop did the best job. I did mention it in follow up garden walk around clips from memory but it would be a bit hard for a viewer to stumble upon that methinks. 😉👍
Cheers.
hi..I transferred my marigold plant in new pot but little root I can see or top surface.. should I cover them with more soil ? ot isit fine with that ?
I think I't might pay just to cover them up a bit 👍
Hope you get some nice flowers from them. 😊
Ruchi Chauhan NJ
did you succeed destroying the nematodes with the mustard greens as I have a real problem.
permaculture companion planting in action. thx for the share
Have had some great results from this method so far Sage Fox :)
Cheers & have a great one :)
That's the one :)
Thanks :)
Result the bud. Looked nice and were destruction to the nematodes. Can't be bad then hey. Uncle was right. So when you dig then through do u mean u turn the soil over and cover them? If some one was using a no dig system do you think cutting them and laying them on top would work too?
:D
Nope, He goes by Robert...
My grandfather was though..
Cheers,
Rob..
do you think any type of marigold will help?
+MonikaLaleczka
The French have more of the active ingredient than others of the short ornamental varieties from what I've read. The Southern Cone Marigold/Black Mint (tagetes minuta) does a better job according to one of the gardening gurus from Gardening Australia. It's a tall plant that does a better job dug through as a green manure apparently.
Hope that helps some Monika 👍😊
Hi Rob, just discovered your video here after finding my carrots having a mild attack of RK nematodes 😣 first time for me. I will definately try the marigolds and mustard greens, thank you for the advice. My question is can i still eat the carrots or do I have to bin them.? I presume the infected roots will have to go in the rubbish bin and not the compost?! Appreciate any advice.
I would munch on them if they were mildly affected. I would definitely bin any scraps or discarded roots though as composting them would quite likely keep them moving around your patch.
BTW, I found mustard greens to be a much better control method.
@@RobsAquaponics thanks for the reply Rob. Your advice has been so helpful to me. I've just bought the marigolds and mustard greens and now I'll go out and get some more mustard greens so going to hit them with everything. 😍
do all types of mustard greens work?
Most do but the really pungent ones work best I've been told.
Rob, Do you have a web site where I can order the Neem Hulls in bulk from?
can i use mustard seed to kill nematodes?
From what I understand the leaf is all you need. I'm not 100% sure if the crushed seed itself will do the job.
I just discovered we have an Xbox :O
Still more fun playing in the dirt though :)
Cheers & have fun out there..
I'm not sure why you say brassicas don't get nematode. We've had it in kale crops.
This summer we've had it in tomatoes, zucchini and cucumbers.
Hi There.. Sorry to hear you've had problems..
I did say they were resistant & not immune to the RK nematodes.. The seriousness of the infestation would also come into play I think..
From what I've read broccoli & Brussels sprouts are the most resistant brassicas.. Have also had no issues with kohlrabi, Scottish curl & Tuscan kale in beds that have infected plants in the previous rotation here in our patch..
Cheers..
Marigolds are becoming much more prominent around and in our Napa Vineyards.We also have plenty of mustard so I suppose we are the nematode destroyer "par excellence," as we make the premium wines, toof
+Richards Lyon MD
Nice one mate.
I think mustards do a better job on the varieties we get here but the marigolds do put out a great display.
Cheers mate.