Control effects and mechanisms of metabolites from <i>Streptomyces ahygroscopicus</i> var. gongzhulingensis strain 769 on sclerotinia rot in sunflowers.

sclerotiorum infection in vitro In the in vitro sunflower leaf experiment, symptoms of disease began to appear in all treatment groups on the third day after inoculation, and the incidence rate showed an increasing trend with time.

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