How much of the nitrogen used by a legume plant comes from the air?
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NoraWI says 2016-04-15 07:09:10 (CST)
All of it if not applied by the farmer.
8 years ago via Forums | Front Porch Forum
KM says 2016-04-15 13:57:56 (CST)
All of it. Legumes are nitrogen fixing plants. A good stand of alfalfa will feed the grasses.
8 years ago via Forums | Front Porch Forum
JerryHicks says 2016-04-19 06:51:45 (CST)
About two-thirds.
I'm assuming that what this means is, that while all of the nitrogen used may have come from the air at some point, the plant gets some (presumably one-third) of its nitrogen from the soil. This nitrogen may have come from the air and may have been incorporated by the decomposition of a previous legume crop but is still held in the soil/organic matter mix at the time it is taken up by the current legume crop.
7 years ago via Forums | Front Porch Forum
Billy Foster says 2016-04-19 11:24:30 (CST)
Good Info Jerry
Thanks
7 years ago via Forums | Front Porch Forum
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