Effect of tillage and nutrient levels on energetics of lathyrus in rice fallows

Abstract

A field study on “Effect of tillage and nutrient levels on energetics of lathyrus in rice fallows” was conducted during rabi season of 2022-23 and 2022-24 at Agriculture farm, Palli Siksha Bhavana (Institute of Agriculture), Visva-Bharati, Sriniketan, in Red and Lateritic zone of West Bengal, India. The experiment comprised of 12 treatment combinations laid out in a split–plot design with three replications. The main–plot treatments included two different tillage practices Zero tillage and Conventional tillage. Sub–plot treatments included six nutrient levels viz. soil application of RDF N: P: K @20-40- 20 kg ha-1 , foliar spray of DAP @ 2% at 30 and 45 DAS, N: P: K (19:19:19) @ 2% at 30 and 45 DAS, N: P: K (19:19:19) @ 2% at 30 and 45 DAS + ZnSO4 @ 0.5% at 40 DAS, N: P: K (19:19:19) @ 2% at 30 and 45 DAS+ ZnSO4 @ 0.5% at 40 DAS+ Boron @ 0.1% at 50 DAS, Results revealed that, among different tillage practices Energy indices viz., energy use efficiency, specific energy, net energy, energy productivity, energy intensiveness was found non- significant. Among different nutrient levels, Energy indices viz., energy use efficiency, and energy productivity was found to be the best in foliar spray of DAP @ 2% at 30 and 45 DAS. Whereas total output energy and energy intensiveness in economic terms was found to be best with foliar spray of N: P: K (19:19:19) @ 2% at 30 and 45 DAS+ ZnSO4 @0.5% at 40 DAS+ Boron @0.1% at 50 DAS. However, energy indices like energy intensiveness in physical terms showed non-significant effect on different nutrient levels. The interaction effect due to tillage and nutrient levels on energy indices was found non- significant.