Vol. 6 (6) : November-December 2015 issue
Green Farming Vol. 6 (6) : 1281-1286 ; November-December, 2015
Effect of irrigation scheduling & weed management on weed dynamics, water productivity & performance of dry seeded rice
LALIT KUMAR ROLANIYAb1, VIVEKa2, AMIT MISHRAc3, ASHISH DWIVEDIa4*, VIPIN KUMARc5, VIVEK KUMARc6 and MONIKA PUNIAd7
aDeptt. of Agronomy, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut – 250 110 (U.P.), bDepartment of Agronomy, Panjab Agriculture University, Ludhiana – 141 001 (Punjab), cInternational Rice Research Institute India Office, NASC Complex, Pusa Campus, New Delhi - 110 012, dDepartment of Genetics & Plant Breeding, S.K. Rajasthan Agriculture University, Bikaner – 334 006 (Rajasthan)
Designation : 1Research scholar, 2Associate Professor, 3Associate Scientist, 4Ph.D Fellow *(ashishdwivedi842@gmail.com), 5Assistant Scientist, 6Specialist Agriculture Res. & Development 7M.Sc. Student
Subject : Agronomy and Crop Production
Paper No. : P-3372
Total Pages : 6
Received : 24 February 2015
Revised accepted : 03 November 2015
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Citation :
LALIT KUMAR ROLANIYA, VIVEK, AMIT MISHRA, ASHISH DWIVEDI, VIPIN KUMAR, VIVEK KUMAR and MONIKA PUNIA. 2015. Effect of irrigation scheduling & weed management on weed dynamics, water productivity & performance of dry seeded rice. Green Farming Vol. 6 (6) : 1281-1286 ; November-December, 2015
ABSTRACT
The experiment was carried out during kharif season 2013 on loam soil under (IRRI-SVPUA&T Meerut, Uttar Pradesh) collobrative research project to evaluate the effect of irrigation scheduling and weed management practices on weed dynamics, water productivity, performance and profitability's of direct dry seeded rice. The study revealed that I1 (continuous shallow flooding) had significant lowest total weed density and total dry weight of weed at harvest stage, water productivity (0.32 kg grain m-3) and unfilled grain moreover, I1 (continuous shallow flooding) were also recorded highest performance viz., plant height (101.41 cm), tiller density (269.83 m2), plant biomass (1102.76 g/m2), filled grain (135.30), biological yield (14.00 t ha-1) and harvest index (39.90 %), and profitability's viz., gross return (86058 ` ha-1), net return (41116 `ha-1) production efficiency (49.6 kg/day/ha) and economic efficiency (363.9 `/day/ha). Likewise W2 (weed free) shown similar trend as noticed above besides, weed control efficiency at 40 and 60 DAS (100 %) of each, except water productivity, maximum net return and economic efficiency.
Key words :
Bispyribac, Dry seeded rice (DSR), Economic efficiency, Irrigation scheduling, Production efficiency, Weed control efficiency, Water productivity.
