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Precise irrigation water and nitrogen management improve water and nitrogen use efficiencies under conservation agriculture in the maize-wheat systems

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Title Precise irrigation water and nitrogen management improve water and nitrogen use efficiencies under conservation agriculture in the maize-wheat systems
 
Creator Gupta, Naveen
Singh, Yadvinder
Jat, Hanuman S.
Singh, Love K.
Choudhary, Kajod M.
Sidhu, Harminder S.
Gathala, Mahesh K.
Jat, Mangi L.
 
Subject irrigation water
nitrogen-use efficiency
conservation agriculture
maize
wheat
 
Description A 3-year field experiment was setup to address the threat of underground water depletion and sustainability of agrifood systems. Subsurface drip irrigation (SDI) system combined with nitrogen management under conservation agriculture-based (CA) maize-wheat system (MWS) effects on crop yields, irrigation water productivity (WPi), nitrogen use efficiency (NUE) and profitability. Grain yields of maize, wheat, and MWS in the SDI with 100% recommended N were significantly higher by 15.8%, 5.2% and 11.2%, respectively, than conventional furrow/flood irrigation (CT-FI) system. System irrigation water savings (~ 55%) and the mean WPi were higher in maize, wheat, and MWS under the SDI than CT-FI system. There was saving of 25% of fertilizer N in maize and MWS whereas no saving of N was observed in wheat. Net returns from MWS were significantly higher (USD 265) under SDI with 100% N (with no subsidy) than CT-FI system despite with higher cost of production. The net returns were increased by 47% when considering a subsidy of 80% on laying SDI system. Our results showed a great potential of complementing CA with SDI and N management to maximize productivity, NUE, and WPi, which may be economically beneficial and environmentally sound in MWS in Trans-IGP of South Asia.
 
Date 2023
2023-08-09T16:38:56Z
2023-08-09T16:38:56Z
 
Type Journal Article
 
Identifier Gupta, N., Singh, Y., Jat, H. S., Singh, L. K., Choudhary, K. M., Sidhu, H. S., Gathala, M. K., & Jat, M. L. (2023). Precise irrigation water and nitrogen management improve water and nitrogen use efficiencies under conservation agriculture in the maize-wheat systems. Scientific Reports, 13(1), 12060. https://hdl.handle.net/10883/22675
2045-2322
https://hdl.handle.net/10568/131519
https://hdl.handle.net/10883/22675
https://doi.org/10.1038/s41598-023-38953-6
 
Language en
 
Rights CC-BY-4.0
Open Access
 
Format application/pdf
 
Publisher Nature Publishing Group
 
Source Scientific Reports