Research notes: Variation in percent seed oil in related nodulating and non-nodulating F2 plants and F3 progenies from three soybean crosses

Date
1979-04-01
Authors
Hadley, Henry
Attiey, Koffi
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Iowa State University Digital Repository
Abstract

The soybean (Glycine max [L.] Merrill) uses both combined nitrogen from the soil and symbiotically fixed nitrogen from the air if effective nodules are present on its roots. Both sources of nitrogen are required for maximum yields at reasonable costs. In the absence of nodules, yields can be brought up to the level of those where effective nodules are present, but only with a high rate of nitrogen fertilizer application.

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