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>The influence of two herbicides on the antifungal activity of some fungicides againstPythium butleriandRhizoctonia solanicausing damping‐off of cowpea
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The influence of two herbicides on the antifungal activity of some fungicides againstPythium butleriandRhizoctonia solanicausing damping‐off of cowpea
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机译：The influence of two herbicides on the antifungal activity of some fungicides againstPythium butleriandRhizoctonia solanicausing damping‐off of cowpea
AbstractThe herbicides fluchloralin and alachlor applied to soil altered the effectiveness of fungicide treatments to seed and soil for controlling cowpea damping‐off. These herbicides also modified the in‐vitro toxicity of the fungicides to the mycelial growth ofPythium butleriandRhizoctonia solaniin a nutrient medium. Both herbicides reduced the toxicity of 2‐methoxyethylmercury chloride (MEMC) and propamocarb to the growth ofP. butleri, and of carbendazim to the growth ofR. solani, but enhanced the toxicity of captafol and quintozene toP. butleriandR. solani, respectively. In pot tests, quintozene gave better control ofR. solanidamping‐off in soil treated with fluchloralin or alachlor than in untreated soil, whereas disease control by carbendazim was decreased in similarly treated soils. Both herbicides attenuated the effectiveness of MEMC and captafol to control the damping‐off caused byP. butleri; the efficacy of propamocarb was increased by alachlor but was decreased by fluchloralin. The implications of herbicide‐fungicide interactions are discussed in the context of fungicidal control of root diseases in herbicide
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