Axenic growth by Cylindrocladium crotalariae (Loos) Bell & Sobers in potato dextrose broth was suppressed significantly by dinoseb at 50 and 100 gmL, and Dyanap (dinoseb naptalam) at 100 gmL. 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 gmL failed to have similar effects on growth of either isolate. Dinitramine at rates up to 100 gg 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 gg soil and in Ruston soil at rates of 50 and 100 gg 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 kgha and dinoseb at 1.68 kgha as herbicide treatments which can increase the severity of CBR in Florigiant peanut.
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Keywords: Arachis hypogaea L, Calonectria crotalariae (Loos) Bell & Sobers, herbicides, microsclerotia, soil type
How to Cite:
Barron, J. & Phipps, P.,
(1983) “Interaction of dinitramine and dinoseb with Cylindrocladium crotalariae and the Cylindrocladium black rot (CBR) Disease of Peanut¹”,
Peanut Science 10(2),