Effects of soil texture on the interaction between Rhizoctonia solani and Meloidogyne incognita on cotton seedlings.
Soils containing 60, 75, and 90% coarse particles (sand plus coarse silt) were prepared by dilution of a field soil with 246microm (60-mesh) silica sand. As the coarse-particle content of the soils increased, the synergistic interaction between Meloidogyne incognita and Rhizoctonia solani on cotton seedlings increased. Increasing the coarse-particle content of the soil also increased damage from the nematode alone and slightly increased soreshin damage from R. solani alone.
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United States Department of Agriculture, National Cotton Pathology Research Laboratory, College Station, TX 77840, USA.