Classification of Weeds 2 Based on ecological affinities 3 Based on soil type Edaphic

Classification of Weeds
2 - Based on ecological affinities
3- Based on soil type (Edaphic)
II. Based on ecological affinitiesa. Wetland weeds
They are tender annuals with semi-aquatic habit.
They can thrive as well under waterlogged and in partially dry condition. Propagation is chiefly by seed.
Eg. Ammania baccifera, Eclipta alba
b. Garden land weeds (Irrigated lands)
These weeds neither require large quantities of water like wetland weeds nor can they successfully withstand extreme drought as dryland weeds. Eg.Trianthema portulacastrum, Digera arvensis
c. Dry lands weeds
These are usually hardy plants with deep root system.
They are adapted to withstand drought on account of mucilaginous nature of the stem and hairiness.
Eg. Tribulus terrestris, Argemone mexicana.
III. Based on soil type (Edaphic)(a) Weeds of black cotton soil: These are often closely allied to those that grow in dry condition. Eg., Aristolochia bracteata(b) Weeds of red soils: They are like the weeds of garden lands consisting of various classes of plants. Eg. Commelina benghalensis(c) Weeds of light, sandy or loamy soils: Weeds that occur in soils having good drainage. Eg.Leucas aspera (d) Weeds of laterite soils: Eg. Lantana camara, Spergula arvensis
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hlo sir...dda so ki classes suru kijiye...or previous paper b provide kra dijiye..