Control of Rhizoctonia solani and Cotton Seedling Disease by Laetisaria arvalis and a Mycophagous Insect Proisotoma minuta (Collembola)

Journal of Phytopathology - Tập 133 Số 2 - Trang 89-98 - 1991
RobertT. Lartey1, E. A. Curl2, CurtM. Peterson3, J. C. Williams3
1Department of Biochemistry, Oklahoma State University, Stillwater, OK 74078, U.S.A.
2Department of Plant Pathology, Alabama Agricultural Experiment Station, Auburn University, AL 36849 (U.S.A.)
3Department of Botany and Microbiology, Alabama Agricultural Experiment Station, Auburn University, AL 36849 (U.S.A.)

Tóm tắt

Abstract Laetisaria arvalis and a mycophagous, rhizosphere‐inhabiting collembolan, Proisotoma minuta, were evaluated in sterilized and nonsterilized soil for suppression of Rhizoctonia solani in a greenhouse environment. R. solani was applied to soil at rates between 10 and 150 mg of colonizedoat inoculum/kg soil. L. arvalis was applied directly to soil at 100 mg/kg or as a seed dressing, either alone or in combination with a population of P. minuta at 1000/kg soil. L. arvalis significantly reduced incidence and severity of cotton seedling disease caused by R. solani; the seed treatment provided better suppression than when L. arvalis was applied to soil. Combination of the fungal agent with P. minuta enhanced suppression of R. solani more than with either agent used alone. Control benefit was linearly increased when increased numbers of insects were applied with L. arvalis.

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Thông tin
Thông tin xuất bản

Journal of Phytopathology

Tập 133 Số 2

89-98

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