Book of Extended summaries ISDA

International Conference on Reimagining Rainfed Agro-ecosystems: Challenges &
Opportunities during 22-24, December 2022 at ICAR-CRIDA, Hyderabad
Patel, G., Dwivedi, B.S., Dwivedi, A.K., Thakur, R. and Singh, M. 2018. Long-term effect of nutrient
management on soil biochemical properties in a Vertisol under soybean–wheat cropping
sequence. J. Indian. Soc. Soil Sci., 66, 215- 221.
T4-08R-1099
On-farm Assessment of Site-Specific Nutrient Management in Rainfed
areas of Telangana
Kasthuri Rajamani 1 , P. Surendra Babu 2 , A. Madhavi 2 , T. Srijaya 2 and M. Goverdan 1
1
Regional Agricultural Research Station, PJTSAU, Palem-509217, Telangana, India
2
Agricultural Research Institute, Rajendranagr, PJTSAU, Hyderabad-501030, Telangana,
India.
Recent research (Chivengeet al., 2022) has demonstrated limitations of the blanket fertilizer
recommendations practiced across Asia. On-farm research has clearly demonstrated the
existence of large field variability in soil nutrient supply, nutrient use efficiency and crop
responses. Thus, it was hypothesized that future gains in productivity and input use efficiency
will require soil and crop management technologies that are knowledge-intensive and are
tailored to specific characteristics of individual farms or fields to manage the variability
among and within fields (Singhet al.,2022).Keeping this in view, the present study examines
the extent of nutritional constraints and the scope of Site Specific Nutrient Management
(SSNM) approach on productivity enhancement and livelihood improvement in dry land
areas of Telangana.
Methodology
A total of ten on-farm trials were conducted with different test cropsviz., rice, maize, ragi,
groundnut, sesamum, green-gram, black-gram, sorghum, bajra and castor in
Nagarkurnooldistrictduring rabi season to evaluatesite specific nutrient management (SSNM)
with target yield approach, blanket application of recommended fertilizers, soil test crop
response (STCR) equation and farmers practice. After conducting farmers’ meeting in each
village, and depending upon soil type, crop, slope and management practices, farmers’ fields
were selected using stratified random methodology for demonstration of soil sampling
procedure in one hectare. Further, crops were grown on selected farmers’ fieldswith known
fertility statusby using SSNM based nutrient application with yield targetfertilizer
prescription equations.The balanced nutrition included a recommended dose of fertilizer
nutrients as N:P 2O 5:K 2O (kg acre -1 ) of 60:24:16 for rice, 25:14:8 for ragi, 96:32:32 for maize,
8:16:19for groundnut, 24:8:8 for sesamum, 18:23:10 for green gram and black gram,
36:16:16 for bajra, 40:24:16 for jonna and 32:16:12 for castor.Farmer’s practice in each trial
was documented, which included suboptimal doses of N and P. Besides other crop
Sustainable soil management for resilient rainfed agro-ecosystem: conservation agriculture, organic farming,
INM, soil-microorganisms-plant interactions
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