Book of Extended summaries ISDA

International Conference on Reimagining Rainfed Agro-ecosystems: Challenges &
Opportunities during 22-24, December 2022 at ICAR-CRIDA, Hyderabad
It helped to irrigate crops especially during summer. It was witnessed in the increase in
amount of water in the nearby bore wells. The quality of water improved now compared to
earlier times. The water table too increased in the area surrounding open well.
d. Graded bunds also reduce the runoff velocity and there by enhance in-situ rain water
harvesting.
e. Pipe outlet and waste weir: These structures act as safe rainwater disposal units, if rainfall
received in high intensity.
Results
i. Compartment bunding: An in-situ conservation practice of “Compartment bunding” was
developed by the AICRP, Centre, Vijayapura, Karnataka. After receipt of few showers in June-
July 2013, land was harrowed to remove germinating weeds. Compartment bunds were
demonstrated over an area of 23 ha covering 25 farmers’ fields in which observations on yield
impact were recorded in 8 demonstrations under compartment bunding. After adoption of
compartment bunding in safflower, sunflower and chickpea they have recorded yield advantage
of 16.70, 79.80 and 12.07 per cent respectively over no compartment bunding or flat planting.
ii. Crop varietal demonstrations: The new crop variety in various crops viz., rabi sorghum
(DSV-4), sunflower (KBSH-53) & chickpea (JG-11) were demonstrated as a sole crop as well
intercropping systems. The results revealed that the yield advantage of 10.55 to 41.67 per cent
in case of introduction of new crop varieties. During 2014-15, effect of SWC structures and
improved varieties on crop productivity was measured by recording yields of five principle
crops from demonstration farmers, ten non-demonstration watershed farmers benefitted from
SWC structures and ten outside watershed farmers and the average was worked out. The
highest per cent increase of demonstration yields over non-demonstration in watershed was
13.53 in sunflower followed by wheat (11.40), safflower (9.65), sorghum (9.40) and
bengalgram (7.88) while the per cent increase of watershed demonstration over outside
watershed ranged from 18.33 (sorghum) to 33.50 (sunflower).
iii. Demonstration on intercropping systems: The intercropping systems viz., sorghum+
chickpea (2:4), chickpea + safflower (4:2) were introduced in the form of demonstrations in
which intercropping systems recorded 160 and 18.05 per cent higher yield advantage over sole
cropping.
Resilience through land and water management interventions, water management and governance
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