EFFICACY OF ORGANIC MANURES AND SUPER ABSORBENT POLYMERS ON MOISTURE RETENTION AND PRODUCTIVITY OF SOYBEAN [Glycine max (L.) Merrill]
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Date
2018-08-01
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University of Agricultural Sciences, Bangalore
Abstract
A field experiment was conducted at All India Coordinated Research Project (AICRP) on Soybean, Zonal Agricultural Research Station (ZARS), University of Agricultural Sciences (UAS), GKVK, Bengaluru to study the “Efficacy of organic manures and super absorbent polymers on moisture retention and productivity of soybean [Glycine max (L.) Merrill]” during kharif 2017. The experiment was laid out in
Randomized Completely Block Design (RCBD) with eight treatments replicated thrice. The results revealed that, application of RDF along with potassium polyacrylate at 7.5 kg ha-1 recorded significantly higher growth viz., plant height (74.6 cm), number of branches plant-1 (14.2), number of leaves plant-1 (31.35), leaf area (2394 cm2 plant-1), SCMR (47.70), total dry matter (57.3 g plant-1) and yield parameters like number of pods plant-1 (58.40), seed weight plant-1 (28.62 g), test weight (19.07 g 100 seeds-1), seed, oil, and protein yield (2707, 534.9 and 1010 kg ha-1, respectively) and stalk yield (4370 kg ha- 1). The uptake of NPK and S (217.9, 29.89, 195.4 and 28.46 kg ha-1, respectively) also
followed the similar trend. Higher soil moisture retention and relative water content of leaves were recorded with application of RDF plus potassium polyacrylate at 10.0 kg ha- 1. Net returns (Rs. 68255) and B:C ratio (3.58) was higher with application of potassium polyacrylate at 7.5 kg ha-1 along with RDF.