Book of Extended summaries ISDA

International Conference on Reimagining Rainfed Agro-ecosystems: Challenges &
Opportunities during 22-24, December 2022 at ICAR-CRIDA, Hyderabad
T2a-31P-1469
Studies on the Effect of Rice Varieties on Flood Tolerant in Karaikal
District
V. Aravinth and S. Jayasankar
Krishi Vigyan Kendra, Madur, Karaikal District – 609 607.
Flooding is one of the most hazardous natural disasters and a major constraint to rice
production throughout the world, which results in huge economic loss. Approximately onefourth
of the global rice crops (approximately 40 million hectares) are grown in rainfed
lowland plots that are prone to seasonal flooding. Karaikal District is also flood prone area
and received average rainfall of 1200-1300 mm per year. Considering seasonal flooding due
to monsoon rain a Front-Line Demonstration was conducted in Karaikal District during
samba (2020-21 and 2021-22) by Krishi Vigyan Kendra, Madur, Karaikal District with three
varieties of Rice varieties Viz., BPT 5204, VGD1 and ADT 54 raised in direct sown method
to find their suitability under flooding condition. Apart from the varieties, seeds were treated
with Bacillus subtilis 10 g per kg of seed, soil application of Azophos (1 kg per ha) bio
fertilizer along with FYM and supply primary nutrient like NPK as recommended by TNAU
(150:50:50 kg of NPK ha -1 ) as basal and topdressing. It was observed that, ADT 54
exhibited higher plant height (165 cm), more number of tillers hill -1 (18 Nos.), more number
of panicles per hill (13 Nos.), 1000 seed weight (16.3 g) and higher grain yield (5,220 Kg ha -
1
) as compared to BPT 5204 and VGD1. Gross and net returns were Rs. 1,01,032 and 43,548
ha -1 , respectively in ADT 54 rice variety and BCR also high (2.32) as against other two
varieties. Hence, to be safe and to avoid risk, ADT 54 variety is suitable for Karaikal district
as direct sowing.
T2a-32P-1478
Crop Diversification at Agricultural Landscape Level for Climate Change
Adaptation in Rainfed Agroecosystems
G. Ravindra Chary*, V.K. Singh, M.S. Shirahatti, K.A. Gopinath, C.A. Rama Rao,
B.M.K. Raju and K.V.Rao
ICAR-Central Research Institute for Dryland Agriculture, Hyderabad, Telangana 500059, India
* rc.gajjala@icar.gov.in
Rainfed agriculture is practiced in about 50 percent of net cropped area. It contributes 44% of
food grains and supports 40% and 75% human and livestock population respectively. Rainfed
agriculture contributes immensely to country’s food production and economy. Climate
change and climate variability impacts Indian agriculture in general and more pronounced on
rainfed agriculture. Rainfall is likely to decline by 5 to 10% over southern parts of India
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Climate resilient agriculture for risk mitigation