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 during 2010-11 and 2011-12 at Hyderabad, to study the effect of rice (Oryza sativa L.) establishment methods and weed management practices on succeeding zero till maize. The experiment was laid out in split design during kharif and split- split during rabi season and the treatments were replicated thrice. Three rice establishment methods [sowing of sprouted rice under puddle condition, system of rice intensification and conventional transplanting] as main plots, four weed management practices [bensulfuron methyl 60 g + pretilachlor 600 ga.iha-1 followed by mechanical weeding at 30 DAS/T, bispyribac sodium @ 25 g a.iha-1, farmer’s practice and weedy check] as sub plots and weed management practices in maize [weedy check, atrazine @ 1.0 kg a.iha-1, atrazine @ 1.0 kg a.iha-1 and hand weeding twice] as sub-sub plots on rice-maize sequence. Manual transplanting of rice resulted in higher dry matter accumulation, yield attributes and yield and recorded lower weed density and weed dry matter. Transplanted rice in rice–maize sequence recorded the highest rice equivalent yield, net returns and benefit cost ratio. Among weed management practices in rice, Farmer’s practice recorded higher grain yield and yield attributes during both the years and it was followed by bensulfuron methyl 60 g + pretilachlor 600 ga.iha-1 followed by mechanical weeding at 30 DAS/T. Hand weeding twice in maize resulted in higher yield of maize. Transplanting in rice, farmer’s practice of weeding in rice and application of atrazine @ 1.0 kgha-1 followed by topramezone @ 30 g a.iha-1 resulted in the highest total productivity and profitability of the rice-maize system.
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