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 Agricultural Research Station, Hagari, Ballari during Kharif season of 2018on deep black soil. The experiment was laid out in randomized block design and repeated thrice with twelve treatments. Significantly higher uptake of nitrogen, phosphorus and potassium (219, 56.5 and 147.4 kg ha-1) was recorded with atrazine 50 WP @ 0.50 a.i. kg ha-1fb 2,4-D Ethyl Ester 38 EC @ 0.90 a.i. kg ha-1 as PoE at 30 DAS and it was on par with hand weeding at 20 DAS and 1 IC at 40 DAS (215, 55.2, and 145.7 kg ha-1, respectively) and 2,4-D Ethyl Ester 38 EC @ 0.90 kg a.i. ha-1 as PoE at 30 DAS fb 1 IC at 40 DAS (211, 54.9, and 143.7 kg ha-1, respectively. Nitrogen, phosphorous and potassium availability in the soil was significantly higher with weed free (IC at 20 & 40 DAS and HW at 30 DAS) (194, 47.6, and 219.9 kg ha-1, respectively) treatment. Among other weed management practices, sequential pre-emergence application of atrazine 50 WP @ 0.50 kg a.i. ha-1 fb 2,4-D Ethyl Ester 38 EC @ 0.90 kg a.i. ha-1 as PoE at 30 DAS recoded significantly higher availability of nitrogen, phosphorous and potassium in the soil (177, 42.2, and 213.8 kg ha-1, respectively) and it was on par with hand weeding at 20 DAS and 1 IC at 40 DAS (173, 41.7, and 212.1 kg ha-1, respectively) and 2,4-D Ethyl Ester 38 EC @ 0.90 kg a.i. ha-1 as PoE at 30 DAS fb 1 IC at 40 DAS (170, 39.9, and 211.9 kg ha-1, respectively).
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