Book of Extended summaries ISDA

International Conference on Reimagining Rainfed Agro-ecosystems: Challenges &
Opportunities during 22-24, December 2022 at ICAR-CRIDA, Hyderabad
have recorded significantly comparable pod yields. Drip irrigation at 75% RDF (2206 kg ha -1 )
and STBF (2119 kg ha -1 ) were comparable and recorded significantly highest pod yield. A
combination of drip irrigation at IW/CPE ratio of 1.0 with STBF and drip irrigation at IW/CPE
ratio of 0.6 with 75% RDF were at par with each other and recorded significantly highest pod
yield. Apart from one pre-sowing irrigation (50 mm) and rainfall (25.0 mm), till maturity, 250,
200 and 150 mm under check basin method; 220, 205 and 165 mm under drip method; 270,
240 and 180 mm depth of irrigation under rainport mini sprinklers for irrigation schedules of
IW/CPE ratios 1.0, 0.75 and 0.5 respectively were given. Higher field water use efficiency was
recorded with drip irrigation at IW/CPE 0.6 (8.6 kg ha -1 mm -1 ). Lowest field water use
efficiency (5.2 kg ha -1 mm -1 ) was recorded with check basin method at IW/CPE 1.0. The higher
water use efficienty noticed under drip irrigated treatment mainly owed to higher economic
yield per unit, amount of water consumed by the crop (Mathukia et al., 2019).
Conclusion
Based on the two year experimentation results it was concluded that, groundnut can be
cultivated during rabi season with significantly higher yield attributes and pod yield recorded
significantly higher field water use efficiency was recorded with drip irrigation at IW/CPE 0.6
(8.6 kg ha -1 mm -1 ), which is suitable for Krishna district of Andhra Pradesh.
References
Mathukia RK, Chhodavadia SK, Sagarka BK and Bhalu VB. 2019. Summer groundnut
response to micro-irrigation and transient water stress. Research & Reviews: Journal
of Crop Science and Technology, 8: 16-20.
Effect of irrigation and fertilizer doses on yield attributes and pod yield of
Methods of irrigation (A)
groundnut during rabi (Pooled data of 2018-19 & 2019-20)
No. of
pods/plant
100-kernel
weight (g)
Pod yield (kg
ha -1 )
Field water
use efficiency
(kg ha -1 mm -1 )
Sprinkler irrigation 10.9 41.3 1814 6.7
Drip irrigation 11.0 45.1 2079 8.6
Check basin method 10.2 39.8 1769 5.2
SE (m) 0.40 1.25 47.9 0.52
CD (p=0.05%) 1.18 2.49 149 1.02
Irrigation schedules (B)
1.0 IW/CPE 11.1 40.4 1944 5.5
0.8 IW/CPE 10.9 41.8 1927 7.2
0.6 IW/CPE 9.9 39.7 1792 7.3
SE (m) 0.52 1.20 42.9 0.42
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