Abstract
Reduction of chlamydospore formation and of lysis of macroconidial cells ofF. solani f.cucurbitae comparable to that found in chitin-amended soil was obtained with additions of NH4Cl or KNO3 to soil. NH4-nitrogen and NO3-nitrogen levels in these soils were kept comparable to those detected in chitin-amended soil. Combined addition of NH4Cl and KNO3 was most effective. Reduction of chlamydospore formation or macroconidial lysis in nitrogen-amended soils was not correlated with an increase or decrease in germination of macroconidia.
Published Version
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