The study was conducted to address the issue of water scarcity and
enhance the water use efficiency in rice cultivation through advanced methods
of irrigation. The effectiveness of drip irrigation systems and the potential
for increased productivity and water use efficiency are determined by the
selection of dripper spacing, dripper discharge rate, suitable crop variety,
and crop geometry. The study found that using a 90 cm lateral spacing and 60 cm
dripper spacing with a 4 lph discharge rate is optimal for rice cultivation in
direct-seeded raised beds with a medium-duration variety. This setup, with a
spacing of 20x40x10 cm (paired row), resulted in a higher grain yield of 7075
kg ha-1, a net return of Rs. 82526/ha, a benefit-cost ratio (BCR) of 2.76, and
a water use efficiency of 7.69 kg/ha-mm during the rabi season. Direct seeding
in raised beds with a medium-duration variety spaced at 20x40x10 cm, combined
with other agronomic practices, is the most effective method for achieving
higher yield parameters, increased yield, greater net return, and improved
water use efficiency and water productivity in drip-irrigated rice cultivation
during the Samba (Rabi) season.
Author(s)
Details
S.
Vallal Kannan
Coastal Saline Research Centre, Tamil Nadu Agricultural University
(TNAU), Ramanathapuram -623536, India.
V,
Ravikumar
Department of Soil and Water Conservation, Agricultural
Engineering College and Research Institute, TNAU, Coimbatore-03, India.
Sangeetha
Jebalin V. V.
Department of Agronomy, Agricultural College and Research
Institute, (TNAU), Madurai-625104, India.
Please see the book here:- https://doi.org/10.9734/bpi/crpas/v3/2045
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