Interaction of dinitramine and dinoseb with Cylindrocladium crotalariae and the Cylindrocladium black rot (CBR) disease of peanut.1

Author:

Barron J. A.,Phipps P. M.1

Affiliation:

1. Former Graduate Research Assistant, Department of Plant Pathology and Physiology; and Associate Professor of Plant Pathology, Tidewater Research and Continuing Education Center, Suffolk, VA 23437. Senior author is currently Product Development Associate, Monsanto Agric. Prod. Co., 11550 N. Meridan St., Carmel, IN 46032

Abstract

Abstract Axenic growth by Cylindrocladium crotalariae (Loos) Bell & Sobers in potato dextrose broth was suppressed significantly by dinoseb at 50 and 100 μg/mL, and Dyanapà (dinoseb + naptalam) at 100 μg/mL. High concentrations of either dinitramine or alachlor suppressed growth of only one of two C. crotalariae isolates tested. Benefin, diphenamid, vernolate, and 2,4 DB at rates up to 100 μg/mL failed to have similar effects on growth of either isolate. Dinitramine at rates up to 100 μg/g soil had no effect on survival of C. crotalariae microsclerotia (ms) in a Ruston or a Woodstown loamy fine sand. Dinoseb reduced ms populations significantly in Woodstown soil at 5, 10, 50 and 100 μg/g soil and in Ruston soil at rates of 50 and 100 μg/g soil. Soil type inoculum density, and herbicide dosage were demonstrated to be important interacting factors affecting CBR development in peanut. Greenhouse and field tests implicated dinitramine at 0.56 kg/ha and dinoseb at 1.68 kg/ha as herbicide treatments which can increase the severity of CBR in Florigiant peanut.

Publisher

American Peanut Research and Education Society

Subject

General Medicine

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1. Dinoseb;Encyclopedia of Toxicology;2024

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