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 research farm of All India Coordinated Research Project on Soybean, Regional Research and Technology Transfer Station (OUAT), Bhawanipatna, Odisha, India during kharif, 2017 under rainfed condition to assess the response of four soybean varieties viz.,JS 20-116, RVS 2010-1, PS 1556 and JS 97-52 as check in two sowing dates i.e. 1st week of August and 3rd week of August, 2017. The data on crop growth parameters indicated that date of sowing has significant effect on dry weight of plant m-2 and crop growth rate (CGR), while the effect on relative growth rate (RGR) was non significant. Higher dry weight of plant m-2 was recorded in August 1st week sowing (35.6, 87.8 and 161.0 g) than late sowing (23.8, 64.0 and 123.2 g) at 30, 45 and 60 days after sowing (DAS), respectively. Dry matter accumulation increased progressively with each successive growth stage of the crop in both the dates of sowing. The CGR recorded between 30 to 45 DAS and 45 to 60 DAS followed the same trend as that of plant dry weight. Sowing of soybean during 1st week of August recorded significantly the higher seed yield (1417 kg ha-1) than late sowing (1200 kg ha-1) in 3rd week of August. The increase in grain yield due to early sowing was ascribed to higher number of pods plant-1 and higher seed index. Among the four test varieties of soybean, the variety JS 20-116 recorded highest seed yield in both August 1st week and 3rd week sowing with mean seed yield of 1550 kg ha-1 followed by RVS 2010-1 (1367 kg ha-1). The seed yield in JS 20-116 and RVS 2010-1 was 47.6 and 30.2% higher than the check variety JS 97-52 (1050 kg ha-1), respectively. From the results of the experiment it is evident that sowing soybean variety JS 20-116 during 1st week of August will avoid rainy days during maturity period and will give higher yield in Odisha.
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