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Interrelationship of Heterodera glycines and Fusarium solani in Sudden Death Syndrome of Soybean
Authors:Kathy S McLean  Gary W Lawrence
Abstract:Experiments were established in field microplots to examine the association between Heterodera glycines and the blue form of Fusarium solani in sudden death syndrome of soybean (SDS). Foliar disease symptoms occurred on more plants per plot, appeared 3 to 7 days earlier, and were more severe on plants grown in plots infested with F. solani + H. glycines than on those inoculated with F. solani only. Yields were suppressed only in treatments that included the nematode. Numbers of H. glycines cysts and second-stage juveniles were significantly lower in plots infested with F. solani + H. glycines than with the nematode alone. Fusarium solani was able to infect cysts and eggs.
Keywords:Disease complex  Fusarium solani  Heterodera glycines  interaction  microplot  nematode  soybean cyst nematode  sudden death syndrome
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