Book of Extended summaries ISDA

International Conference on Reimagining Rainfed Agro-ecosystems: Challenges & Opportunities
during 22-24, December 2022 at ICAR-CRIDA, Hyderabad
(Maharashtra). In the research farm of CICR, cotton is being cultivated under different
management practices. Here we have discussed about comparisons of the soil properties for
knowing the effect of land use and management on the dynamic properties of soil. For that
purpose, we have selected three different locations and representative soils were studied under
different management practices viz.1) Organiccultivation with the application of vermicompost
and green manuring 2) A soil with inorganic cultivation with the application of recommended
dose of fertilizer used along with insecticides, and 3) Virgin or undisturbed soil with no crop or
fallow. The soil properties of these 3 sites were compared for changes due to management
interventions for surface (0-25cm) and subsurface (25-50cm) layers. The comparisons of
temporal data indicated that most of the dynamic soil properties changed with time in organic,
inorganic and undisturbed soils under cotton cultivation. The sHC decreased in all soils
whereas, organic carbon increased over a period of time (23 and 10 %, 23 and 26 %) in surface
and subsurface soils of organic and inorganic systems. Bulk density decreased about 15 and 6
% in surface and sub-surface layers of soils in organic system. Calcium carbonate has
decreased in organic as well as undisturbed systems whereas in intensively cultivated soil it has
increased.The study shows that the organically managed soil management system had better
yield as compared to other soil management systems. The prevalent system of management
practices increased the organic carbon in soils and decreased the BD, sHC and pH of soils and
inorganic carbon tends to increase in soils. These trends of changes in soil properties could be a
threat to the cotton cultivation. These issues need to be handled with proper management
intervention.
T4-50P
Effect of Different Levels of Nitrogen, Phosphorus and Potash on Yield, Yield
Attributes and Economic of Bt. Cotton under Rainfed Conditions
P. D. Vekariya, V. D. Vora*, S. C. Kaneria, D. S. Hirpara, M.M. Talapada, K. S. Jotangiya
and R.J. Chaudhary
Main Dry Farming Research Station, Junagadh Agricultural University, Targhadia
(Rajkot-360 023)
* vdvora@jau.in
An experiment was under taken on “Nutrient management in Bt. cotton under rain fed conditions
“on medium black clayey soil of North Saurashtra region of Gujarat at Dry farming research
station, Junagadh Agricultural University, KukadaduringKharif 2013-14 to 2020-21. The
experiment was laid out in factorial randomizedblock design with three replications. The
Sustainable soil management for resilient rainfed agro-ecosystem: conservation agriculture, organic farming,
INM, soil-microorganisms-plant interactions
555 | Page