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 |
Soybean, among the major crop of the region, is one of the classical short day plants and faces thermo-sensitivity in nature. The crop growing environmental conditions can be manipulated by opting different sowing dates resulting in different sets of environmental conditions for the crop, which are likely to be encountered during crop growth. An experiment was conducted during the kharif season of 2016-17 at the field of All India Coordinated Research Project on Agro-meteorology, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola (MS).Four sowing times 26th, 27th, 28th and 29th MW and three soybean genotypes JS-335, JS-9305 and TAMS-98-21 were tested in FRBD with three replications. Results revealed that, soybean sown during 26th MW recorded significantly higher seed yield with maximum heat use efficiency and water use efficiency. Soybean variety JS 335recorded significantly higher seed yield with maximum heat use efficiency and water use efficiency. Pod formation to seed filling stage is the most important for determining the quantity of seed yield. During these stages, minimum temperature, rainfall and relative humidity (RH I & II) showed a positive and significant association with the seed yield. Increased maximum temperature and diurnal temperature range and inadequate rainfall at the growth stage of beginning seed, has the greatest impact on soybean yield. Optimum rainfall and temperatures encountered during the critical reproductive phase (PF-SF) of earlier planted soybean crop favoured higher seed yield levels.
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