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A field experiment was conducted during kharif season of 2015 at the Research cum Instructional Farm, Indira Gandhi Krishi Vishwavidyalaya, Raipur to evaluate the effect of foliar nutrition on uptake of nutrients and economics of Soybean [Glycine max (L.) Merrill] under Vertisols of Chhattisgarh plains. The experiment was laid out in Randomized Block Design with three replications. The results revealed that application of RDF+spray of DAP @ 2% at pod initiations stages of crop growth resulted significantly higher uptake of nutrients N, P, K, and also positive effect on micronutrients and economics compared to the application of RDF+Water spray at pod initiation stage and RDF only. It also positive effect on micronutrients in soil such as activity of microbial population, improve seed quality and oil quality of soybean through regulate nutrient during pod filling stage when the soil are not able to provide nutrients, quality parameters and nutrient uptake of soybean were significantly influenced by foliar application of nutrients at different stages of crop. The foliar application of RDF+spray of DAP @ 2% recorded significantly higher net return of ` 60,279 with. B:C ratio of 3.07. Foliar spraying with 2% DAP at flowering and at early pod development in addition to soil application of NPK fertilizer was found to be more beneficial to improve the productivity of soybean than RDF application alone. AbstractArticle History

A field experiment was conducted in two consecutive rabi 2016-17 and 2017-18, at Mainpat, Chhattisgarh to find out the suitable date of sowing, residual nutrient of preceding crop and direct effect of nutrient at varying levels on succeeding buckwheat for obtaining higher productivity, profitability nutrient uptake and quality of local buckwheat cultivars in hilly area of Chhattisgarh. The experiment was laid out in split-split plot design with three date of sowing viz., D1-1 st week of October, D2-3 rd week of October and D3-1 st week of November as main plot treatments and three residual nutrient effect of preceding crop viz., F1-100% RDF, F2-100% RDF + 5 t FYM ha -1 and F3-150% RDF as sub plot treatments and three direct application of nutrients viz., F0-Control, F1-50% RDF and F2-100% RDF on buckwheat, as sub-sub plot treatments. Results revealed that sowing of buckwheat on 1 st week of October (D1), recorded significantly higher plant height (85.77, 86.28 cm), primary branches plant -1 (6.70, 6.80), dry matter accumulation plant -1 (7.07, 7.17 g), number of seeds plant -1 (171.19, 177.04), seed weight plant -1 (4.19, 4.25 g) and 1000 seed weight (22.53, 22.66 g), seed yield (9.41, 9.52 q ha -1 ), NPK uptake by grains, net return ( 24207, 25430 ha -1 ) and B:C ratio (2.80, 2.75). Higher protein content (13.07, 13.32%), but no significantly affected by the date of sowing. Among the residual nutrient of preceding crop with 150% RDF recorded significantly higher all growth characteristics, yield attributes, seed yield, NPK uptakes, protein content, net return and B:C ratio. Irrespective of direct application of nutrients with 100% RDF recorded significantly higher plant height plant height (80.33, 81.07 cm), primary branches plant -1 (6.73, 6.82), dry matter accumulation plant -1 (6.91, 7.00 g), number of seeds plant -1 (165.46, 170.06), seed weight plant -1 (4.29, 4.34 g) and 1000 seed weight (22.65, 22.69 g), seed yield (9.02, 9.08 q ha -1 ), NPK uptake by grains, protein content (13.16, 13.44%) and net return ( 21319, 22230 ha -1 ), except B:C ratio (2.52, 2.46), it was recorded under control (F1) treatment.

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