Influence of different plant growth regulators on growth and yield of blackgram under new alluvial Gangetic zone of West Bengal
Keywords:
Blackgram, Plant growth regulators, Yield, Nutrient uptakeAbstract
In the present investigation, a field experiment was conducted to observe the influence of plant growth regulators (PGRs) on blackgram variety Sulata. Results revealed that blackgram plot treated with recommended dose of fertilizer (RDF) along with the foliar application of sodium para-nitrophenolate 0.3% SL @ 5 ml/litre of water recorded the maximum value in plant height, leaf area index, dry matter accumulation and number of branches/plant, total dry matter. The maximum seed yield of blackgram was recorded as 1256 kg/ha with sodium para-nitrophenolate 0.3% SL @ 5 ml/L followed by sodium paranitrophenolate 0.3% SL @ 6 ml/L. Among the foliar spray treatments, highest seed protein content (25.78%) was recorded with sodium para-nitrophenolate 0.3% SL @ 5 ml/L followed by sodium para-nitrophenolate 0.3% SL @ 6 ml/L. Based on the experimental results, it may be recommended that an integration of recommended dose of fertilizers (N, P2O5 and K2O at 20, 40 and 40 kg/ha) along with foliar application of sodium para-nitrophenolate 0.3% SL @ 5 ml/L at 35 DAS (1st spray) and 50 DAS (2nd spray), respectively, enhanced the growth and yield of blackgram as well as improved the soil nutrient status in lower Gangetic alluvial zone of West Bengal.
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