Abstract
An experiment was conducted on mungbean (Vigna radiata L.) during three consecutive years of zaid (2016 to 2018) at Agricultural Research Station, Ummedganj, Kota (Rajasthan). The experiment consisted of 12 treatment combinations including three irrigation regimes (IW/CPE ratio 0.8, 1.0 and 1.2) and four fertility amendments along with foliar spray of bio-regulator (100 % RDF, 100 % RDF + salicylic acid 100 ppm, 125 % RDF + salicylic acid 100 ppm and 150% RDF + salicylic acid 100 ppm) were under taken in split plot design with four replications. The maximum grain yield (930 kg ha-1) was recorded under application of IW/CPE ratio 1.2 over IW/CPE ratio 1.0 and 0.8. Significantly higher WUE (2.04 and 2.03 kg ha-mm-1) and WP (0.204 and 0.203 kg m-3) were recorded under irrigation regime of IW/CPE ratio 1.2 and 1.0 in comparison to IW/CPE ratio 0.8. Significantly higher net return (Rs. 37409/- ha-1) and B:C ratio (1.89) were recorded under irrigation regime of IW/CPE ratio 1.2 over irrigation regimes of IW/CPE ratio 1.0 and 0.8. The maximum grain yield (830 and 840 kg ha-1) was recorded with the application of 125 % RDF + foliar spray of salicylic acid 100 ppm remained on par with 150 % RDF + foliar spray of salicylic acid 100 ppm, but it was found significantly superior over application of over application of 100 % RDF + foliar spray of salicylic acid 100 ppm and 100 % RDF. Significantly higher water use efficiency (2.06 kg ha-mm-1) and water productivity (0.206 kg m-3) were recorded in mungbean with the application of 125 % RDF + foliar spray of salicylic acid 100 ppm over application of 100% RDF + foliar spray of salicylic acid 100 ppm and 100 % RDF in mungbean. Application of 125 % RDF + foliar spray of salicylic acid 100 ppm gave maximum net return (Rs. 31272/- ha-1) and B:C ratio (1.59) over application of 100% RDF + foliar spray of salicylic acid 100 ppm and 100 % RDF.
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