Book of Extended summaries ISDA

International Conference on Reimagining Rainfed Agro-ecosystems: Challenges & Opportunities
during 22-24, December 2022 at ICAR-CRIDA, Hyderabad
Rathore, M., Singh, R. and Kumar, B., 2013. Weedy rice: an emerging threat to rice cultivation
and options for its management. Curr. Sci. 1067-1072.
Suh, H.S., 2008. Weedy Rice. National Institute of Crop Science, Rural Development
Administration (RDA), Korea.
T4a-53P-1546
Yield and Nutrient Uptake of Direct Seeded Rice under Different Tillage and
Nutrient Management Practices
P. Manoj Kumar 1* , D K Roy 2 , Santosh Kumar Singh 2 , N K Ray 2
1 Kerala Agricultural University, Thrissur, Kerala, India
2 Dr. Rajendra Prasad Central Agricultural University, Pusa, Bihar, India
* manojpittala@gmail.com
Rice (Oryza sativa L.) is one of the major food crops, especially in Southeast Asia, where it is
the principal diet for Asian inhabitants, with about 35-80% of the calorie supply for daily needs.
Rice is grown in around all Indian states and Bihar, one of them, is the country’s 6 th largest in
terms of rice production, with a yearly output of 8.09 Mt from an area of 3.3 Mha. The average
productivity in Bihar is 2.44 t/ha, slightly below the national average (DoE and S, Govt. of
Bihar, 2019-20). Conventional cultivation of transplanted rice, besides being tiresome,
expensive, and time-killing, long-term puddling practice in rice cultivating areas affects soil
aggregates, the beneficial microbial activity, and the general soil environment (Bhattacharyya et
al., 2012). Rational nutrient supply is a prerequisite for the growth and development of rice.
Disproportionate nutrient application diminishes nutrient uptake by crops, NUE, deteriorates the
ecological quality, and increases the cultivation cost. Against the above backdrop, this study was
conducted to determine the effect of different tillage and nutrient management practices on the
yield and nutrient uptake of direct-seeded rice.
Methodology
A field experiment was conducted in an ongoing long-term tillage trail that was established in
2010 under a set of tillage and nutrient management treatments with the Rice-Maize cropping
system at the Agronomical Research Farm (plot no. 5) of Tirhut college of agriculture, Dholi
(RPCAU) during Kharif 2019. The soil belongs to the great group calciorthent, textural class of
sandy loam, alkaline, moderate in OC, N, phosphorous, potassium and deficient in sulphur, and
zinc. A short-duration rice variety Prabhat was taken as a test variety. The total rainfall received
during the crop growth period was 1039.8 mm. The experiment was laid out in ‘split-plot design’
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