Improving productivity of maize-lentil rotation in alkaline Fluvisol following soil test crop response (STCR) - targeted yield approach of nutrient management. Issue 7 (7th June 2022)

• Record Type: Journal Article
• Authors: Venkatesh, Madasur Subbabhat; Hazra, Kali Krishna; Ghosh, Probir Kumar; Singh, Kranti Kumar
• Is Part Of: Archives of agronomy and soil science. Volume 68:Issue 7(2022)
• Page Start: 929
• Page End: 943
• Publication Date: 2022-06-07
• Subjects: STCR targeted-yield approach -- multivariate regression analysis -- integrated plant nutrient supply (IPNS) -- nutrient uptake -- farmyard manure -- grain yield; Horticulture -- Periodicals; Soils -- Periodicals; 630.5
• DOI: 10.1080/03650340.2020.1864338
• Languages: English
• ISSNs: 0365-0340

Abstract

ABSTRACT: Soil-test crop response (STCR) approach is aiming to precise adjustment of fertilizers under varying soil-test values for targeted-yield, presently gaining recognitions for sustainable nutrient management. The study aimed to envisage the precision scale of STCR targeted-yield models in maize-lentil rotation in alkaline Fluvisol under sole-fertilizer and integrated nutrient management (with farmyard manure). Fertility-gradient, test-crop diagnostic, and validation trials were conducted following STCR technical program. Soil fertility gradient and variable fertilizer doses had caused a large variation in grain yield of maize (0.99–4.94 t ha −1, CV = 30%) and lentil (1.11–2.02 t ha −1, CV = 13%). Lentil had increased potential to utilize soil nutrient pools; in contrast, maize was highly responsive to fertlizer nutrients. Multivariate-regression analysis revealed that fertilizers N, P, and S had a strong and direct influence on maize yield; where fertilizer-P was the primary yield-determining variable for lentil. Both sole-fertilizer and integrated STCR-based treatments attained the targeted-yields in maize. However, STCR treatments could not attain the targeted-yields in lentil (17–29% deviation), but had yield advantage over the blanket recommended fertilizer dose. Hence, in tropical-alkaline soils, integrated STCR targeted-yield approach could be the sustainable nutrient management option(s) for improving the productivity of the maize-lentil system.