Kakraliya, M and Jat, H S and Chhokar, R S and Kumar, Suresh and Choudhary, M and Sharma, P C and Jat, M L (2024) Conservation agriculture layered with subsurface drip fertigation influences weed dynamics, weed indices and productivity of rice-wheat system. Crop Protection (TSI), 183. ISSN 0261-2194
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A three-year field study was conducted to explore the use of Conservation Agriculture (CA) as a cost-effective alternative to conventional tillage (CT) in rice-wheat (RW) systems. Therefore, to minimize the weed menace while sustaining the system productivity, a three-year field study was undertaken with different CA-based practices layered with flooded (FI) and subsurface drip irrigation (SDI). In rice, weed density (WD) in Sc8 {Zero tillage direct seeded rice with residue (+R) and SDI} recorded 72.9% lowered then Sc1 (CT-Puddled transplanted rice) after three years. However, maximum WD (162 m−2) and dry matter (WDM; 772.8 g m−2) were recorded in ZTDSR without residue (-R) with FI (Sc3) during third year which reduced rice yield by ∼37%. In wheat, the WD and WDM of Phalaris minor, Coronopus didymus, Melilotus indica and other species lowered in CA with SDI system (Sc5-Sc8) than CTRW system (Sc1 and Sc2). Lowest weed index (WI) observed with Sc8 during third year, while diversity indices (H’, R, E) increased by 10, 57 and 10% under SDI system than CTW-R scenario (Sc1). CA-system improved productivity by 7.40–37.11% over CTRW systems in weed free (WF) conditions, regardless of residue and irrigation management. Under weedy check (WC), Sc8 was top yielder with yield of 8.32 Mg ha−1. Moreover, sustainable intensification (Sc7-Sc8) improved productivity by 35.2 and ∼52% than CTRW systems in WF and WC plots, respectively. In conclusion, CA+SDI scenarios may be recommended for RW system owing to their system yield enhancement, resource savings and weed reduction advantages.
| Item Type: | Article |
|---|---|
| Divisions: | Global Research Program - Resilient Farm and Food Systems |
| CRP: | UNSPECIFIED |
| Uncontrolled Keywords: | drip fertigation, weed dynamics, weed indices, rice-wheat system |
| Subjects: | Others > Rice Others > Weed Science Others > Wheat |
| Depositing User: | Mr Nagaraju T |
| Date Deposited: | 09 Apr 2025 05:24 |
| Last Modified: | 09 Apr 2025 05:24 |
| URI: | http://oar.icrisat.org/id/eprint/13029 |
| Official URL: | https://www.sciencedirect.com/science/article/abs/... |
| Projects: | UNSPECIFIED |
| Funders: | UNSPECIFIED |
| Acknowledgement: | The authors acknowledge the support received from the ICAR-CSSRI, Karnal, CIMMYT Academy and CCS Haryana Agricultural University, Hisar. The research was financed and supported from CGIAR Research Program (CRPs) on Climate Change, Agriculture and Food Security (CCAFS) and Indian Council of Agricultural Research (ICAR) and grant to CIMMYT for CA research in the country... |
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