Effect of Heterodera glycines
Abstract
Response of a nonnodulating soybean strain to infection by Heterodera glycines was greatly affected by applications of NaNO[sub3]. Soybean yields from nematode infested microplots were reduced 71.8, 44.4, and 10.7% at low, medium, and high N levels, respectively, when compared with yields of noninfested plots at similar N levels. The results indicate that besides reducing root nodulation and N fixation, H. glycines causes soybean yield reductions by inciting deleterious host responses that increase with N deficiency.Downloads
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