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This is rather light on details, but perhaps that is to be expected. The role of phosphorus seems a little unclear. How much of it is needed? Nitrogen may be common, but phosphorus is not, and we have problems getting enough, from what I hear.
This is rather light on details, but perhaps that is to be expected. The role of phosphorus seems a little unclear. How much of it is needed? Nitrogen may be common, but phosphorus is not, and we have problems getting enough, from what I hear.