National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
A field experiment was conducted at Central Institute for Cotton Research Farm, Nagpur for three years in medium deep clay loam soil. The experiment was laid out in RBD design with three replications consist of three herbicide based weed management packages in intercropping of non Bt cotton + soybean and two sole crops. Non Bt cotton+ soybean intercropping reduced seed cotton yields considerably in a year of very 640 mm higher rainfall over normal caused over growth of soybean. In second year also the seed cotton yields were low due to very high incidence of Helicoverpa armigera caused non recovery of intercropped cotton. The intercropped soybean grain yields were non significantly influenced in all the years by herbicide treatments and intercropping. The conventional herbicide package consists of Pendimethalin 0.75 kg a. i. ha-1 as PPI along with two interculture operations at 21 and 42 DAS was found to be most efficient. However, most economical and relatively efficient rice herbicides were Butachlor 1.0 kg as PPI or Oxyflurofen 0.1 kg a. i. ha-1 as pre emergence with two hoeings at 30 and 45 DAS and one hand weeding at 21 DAS to remove any herbicide resistant broad leaf weeds. All three herbicide packages tested were efficient economical and easily adoptable due to their local availability and all ready being used in rice ecosystem. Subsequently results were validated and demonstrated in Bt and non Bt hybrid cotton in station, on farm trials and farmers fields in the last 15 years.
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