Irrigation and Sulphur Fertilization Effects on the Productivity, Profitability and Greenhouse Gases Emissions in Indian Mustard

Abstract

SUMMARYThe response to sulphur (S) and irrigation of mustard although site-specific, is less studied across sites. Economics and greenhouse gases (GHGs) emissions are other important considerations for developing resource-efficient technologies, but hardly studied in mustard. The objectives of this study were to appraise productivity, economics and GHGs emissions under three irrigation regimes combined with four levels of S, laid out in a split plot design with three replications. Results showed that two irrigations at 30 and 60 DAS combined with 60 kg S ha−1 resulted in highest gross and net returns, which were 30.9 and 37.2% higher than that in single irrigation at 30 DAS, and 47.2 and 68.0% higher than that in single irrigation at 60 DAS without S application, respectively. Estimated GHGs emissions from common inputs (machinery, diesel, fertilizer and insecticides) of mustard were 1486.2 kg CO2 eq ha−1 with greater share (95%) of fertilizer. Econometric analysis predicts that 1% increase in irrigation and S use will lead to 10.29 and 9.98% increase in mustard yield, respectively.

Evaluation of rapeseed-mustard cultivars under late sown condition in coastal ecosystem of West Bengal

“…The productivity of the crop in the state (1066 kg/ha) is quite lower than developed countries mainly due to cultivation of age-old varieties having low yield , 2231-5209 (Online) All Rights Reserved © Applied and Natural Science Foundation www.jans.ansfoundation.org potential (De et al, 2014, Directorate of Agriculture, 2014. The productivity is also constrained further due to its cultivation in the soil with residual or marginal fertility, and conserved soil moisture (Ray et al, 2016). Contrarily, improved agro-techniques like use of improved cultivars, timely sowing, ridge and furrow sowing method, adequate nutrient supply, irrigation at critical stages, chemical weed management at critical period (15-40 DAS) and use of plant growth regulators (PGR) are the keys to achieve higher productivity of the crop in developed countries under fertile land situation.…”

Profitability, energetics and GHGs emission estimation from rice-based cropping systems in the coastal saline zone of West Bengal, India

“…Crop productivity results transformation of solar energy into metabolizable energythrough photosynthetic pathways [17]. Thus, system productivity and profitability mainly depend on farming practices, which include the use of seed, fertilizer, pesticide, irrigation and labour energy sustainablly.…”