Book of Extended summaries ISDA

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International Conference on Reimagining Rainfed Agro-ecosystems: Challenges & Opportunities during 22-24, December 2022 at ICAR-CRIDA, Hyderabad Conclusion Relationship between PASM and Seed yield (kg/ha) Increase in realization percent of yield as per increase in the PASM per cent clearly shows the effect of PASM per cent on yield. Present study highlights the necessity to understand PASM as One of the Impact Criteria for Drought Declaration for soybean crop for the region before planning and management. From the overall study, the PASM values may be followed as in impact criterion for declaring drought after the mandatory criteria of rainfall/SPI (Standardized Precipitation Index) deficiencies are triggered on. References: Anonymous, 2002, Drought 2002. Department of Agriculture and Cooperation, Ministry of Agriculture, New Delhi. Anonymous,2016. Manual for Drought Management, published by Department of Agriculture, Cooperation and Farmers Welfare, Ministry of Agriculture and Farmers welfare, GoI, New Delhi. NRAA, 2013. Contingency and Compensatory Agriculture Plans for Droughts and Floods in India-2012, Position paper No.6, 877. Proceedings of 4 th International Conference on Dry Zone Agriculture 2018. Faculty of Agriculture, University of Jaffna, Sri Lanka, 1 st & 2 nd of November 2018. Page No. 81. Emerging approaches (RS, AI, ML, Drones etc) for crop management &assessment 712 | Page

International Conference on Reimagining Rainfed Agro-ecosystems: Challenges & Opportunities during 22-24, December 2022 at ICAR-CRIDA, Hyderabad T5-06R-1419 Development and Evaluation of DC Motor Powered Brush Cutter Ashish S. Dhimate, I. Srinivas, B. S. Reddy, R. V. Adake, G. Pratibha, Mallikarjuna Reddy and S. Vijaya Kumar ICAR-Central Research Institute for Dryland Agriculture, Hyderabad, Telangana-500059, India Nowadays, engine operated brush cutters are well popular among the farmer for various operation like grass cutting, paddy harvesting etc. The brush cutter is mostly run with fossil fuel like petrol. However, depletion of fossil fuel and day by day increase in their price, and pollution are the main challenges in use of fossil fuel. To overcome the expensive using cost and the carbon dioxide released problems, there have been concerned by many countries in the recent years (Chieh-Tsung Chi, 2012). Moreover, Government of India (GOI) promoting the use of renewable resources (Anonymous 2018) to meet the ever-rising energy demand in India. Therefore, the use of power storage technology (battery) for harnessing energy is gaining popularity for use in agricultural machinery (Sahoo and Rehman 2020). The recent scenario has increases the scope of battery technology for carrying out some of agricultural activity like weeding, harvesting etc. Further, it was observed that most of battery-operated machinery has less noise and vibration compared to engine-based machinery. Sahoo and Raheman 2020, developed vertical conveyor reaper. From the study, it was observed that developed e-reaper does not produce any exhaust emission, moreover the noise and vibration were 4.34% and 49.89%, lesser, respectively. The cost of operation with the developed e-reaper was 63% lesser than the traditional method of harvesting. It also reviewed that estimation of charging cost of battery per using time is generally lower than that needed by the internal combustion engine type. Hence, it was decided to develop a DC motor powered brush cutter for Indian farmers with small size land holdings to reduce the cost of cultivation. Methodology Description of developed Electric brush cutter Newly developed brush cutter consist battery unit, permanent magnet DC motor, motor speed controller, Coupler, Hallow Pipe and spline shaft, gear head, cutting blade, crop gathering unit, etc. Total weight of prototype is 11.5 kg including battery. Operation of developed prototype is similar to engine operated brush cutter. The battery is fixed in shoulder mounted sack and its whole weight carried by both shoulders equally. Performance evaluation of e‐brush cutter The performance of the developed DC motor powered brush cutter was evaluated in laboratory and field at ICAR-Central Research Institute for Dryland Agriculture, Hyderabad. It was tested on finger millet crop stem after harvesting ear-head. The remaining stem of the finger millet is 713 | Page Emerging approaches (RS, AI, ML, Drones etc) for crop management &assessment

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