Chemical Weed Management in Soybean and Residual Effect on Greengram
Pre and Post Emergent Herbicide Weed Management in Soybean
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The weed control treatments includes one pre and three post emergent herbicides compared with two hand weeding at 20 and 40 days after sowing and weedy check.Clethodim 24 % EC @ 60 g a. i. ha-1 along with NIS + AMS effectively controlled weeds as well as reduce the weed dry weight significantly as compared to all other treatments except application of clethodim 24 % EC @ 48 g a. i. ha-1 along with NIS + AMS. Minimum diversity index of weeds and lower species richness was recorded in the treatment which receiving clethodim 24 % EC @ 48 g a. i. ha-1 along with NIS + AMS.Highest weed control effi...
The weed control treatments includes one pre and three post emergent herbicides compared with two hand weeding at 20 and 40 days after sowing and weedy check.Clethodim 24 % EC @ 60 g a. i. ha-1 along with NIS + AMS effectively controlled weeds as well as reduce the weed dry weight significantly as compared to all other treatments except application of clethodim 24 % EC @ 48 g a. i. ha-1 along with NIS + AMS. Minimum diversity index of weeds and lower species richness was recorded in the treatment which receiving clethodim 24 % EC @ 48 g a. i. ha-1 along with NIS + AMS.Highest weed control efficiency was noticed in clethodim 24 % EC @ 60 g a. i. ha-1 along with NIS + AMS (71.79 %). Application of clethodim 24 % EC @ 60 g a. i. ha-1 along with NIS + AMS significantly recorded higher number of pods per plant, number of seeds per plant, pod weight per plant, hundred grain weight and seed yield without any phytotoxicity. This was on par with application of clethodim 24 % EC @ 48 g a. i. ha-1 along with NIS + AMS.The weed control treatments did not show any observable phytotoxicity symptoms on the succeeding green gram crop as well as germination, root weight, shoot weight.
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