Book of Extended summaries ISDA

International Conference on Reimagining Rainfed Agro-ecosystems: Challenges & Opportunities
during 22-24, December 2022 at ICAR-CRIDA, Hyderabad
experiment consists of three levels of nitrogen viz.; N60- 60 kg N/ha, N80- 80 kg N/ha and N100-
100 kg N/ha, two levels of phosphorus P0- 0 kg P2O5/ha andP30- 30 kg P2O5/ha and two levels of
potash K0- 0 kg K2O/ha and K60- 60 kg K2O/ha thus, twelve treatment combinations. On the
basis of pooled results the seed cotton and stalk yield of Bt.cotton were significantly influenced
by the various levels of nitrogen, phosphorus and potash. The application of nitrogen 100 kg,
phosphorus 30 kg and potash 60 kg/ha significantly increased the seed cotton yield (2081, 2051
and 2039 kg/ha, respectively) and stalk yield (3192, 3177 and 3193 kg/ha, respectively) of
Bt.cotton.While in growth and yield attributing parameters like plant height, number of
monopodia, sympodia and balls/plant significantly increased with the application of 100 kg N/ha
and 30 kg P2O5/ha, but application of 60 kg K2O/ha significantly increased only number of
sympodia/plant. The post harvest soil fertility like pH, EC and organic carbon content of soil
were not influenced significantly due to different levels of nitrogen, phosphorus and potash.
Significantly higher value of available status of nitrogen and phosphorus in soil were recorded
with application of 100 kg N, 30 kg P2O5 and 60 kg K2O, but application of 60 kg K2O/ha
significantly increased available potash content in soil. Maximum net return was recorded
withapplication of nitrogen 100 kg, phosphorus 30 kg and potash 60 kg/ha, respectively.
Effect of Long Term INM On SOC Stock, Yield Sustainability and Its
T4-51P
Relationship with Soil Quality Attributes Under Cotton + Greengram (1:1)
Intercropping System in Vertisols
V.V. Gabhane 1 , P.R. Ramteke 1 , R.S. Patode 1 , M.M. Ganvir 1 , A.R. Tupe, A.B. Chorey and
G. Ravindra Chary 2
1 AICRP for Dryland Agriculture, Dr. Panjabrao Deshmukh Krishi Vidyapeeth,
Akola-444 104, Maharashtra
2 AICRPDA, ICAR-CRIDA, Hyderabad
The present study was conducted during 2021-2022 on a long term field experiment initiated
during 1987-88 at AICRP for Dryland Agriculture, Dr. Panjabrao Deshmukh Krishi Vidyapeeth,
Akola, Maharashtra, with eight treatment combinations including a control, two sole organics
treatments, two sole inorganics, and three treatments of integration of organics to substitute for
the fertilizer N requirement in cotton + greengram (1:1) intercropping system under semi-arid
agro-ecosystem in Vidarbha region of Maharashtra. The results after 35 th cycle revealed that
partial substitution of nitrogen either by farmyard manure (FYM) or gliricidia along with
chemical fertilizers improved the soil quality attributes and crop productivity in terms of
556 | Page Sustainable soil management for resilient rainfed agro-ecosystem: conservation agriculture, organic farming, INM, soilmicroorganisms-plant
interactions