Book of Extended summaries ISDA
Book of Extended summaries ISDA Book of Extended summaries ISDA
International Conference on Reimagining Rainfed Agro-ecosystems: Challenges & Opportunities during 22-24, December 2022 at ICAR-CRIDA, Hyderabad in the rainfed area. If these constraints are addressed, these areas have tremendous potential to contribute a larger share in food production and faster agricultural growth compared to the irrigated areas (Reddy et al., 2020). Targeting smallholder farmers particularly in rainfed areas and irrigated areas, offers the best chance for reducing poverty quickly in developing countries. Small and marginal farmers constitute 86.25% of Indian farmers, 47.38% of cultivated land and over 50% of the total agricultural production is vital for not only achieving Indian agrarian economy, but also for alleviating hungry and poverty (Singh et al, 2022). Most of the small and marginal farming is rain dependent covering the SAT region in the country. They are affected by the recent trends of climate change impacts of increased frequency of droughts, floods, high rainfall intensities, increased temperatures combined with shifts in markets and prices. Moreover, these farm lands are degraded due to soil erosion making the soil unproductive and unsustainable for nutrients storage, organic carbon and other soil microorganisms useful for the plants. To make these grey lands into productive lands, a long-term strategy for addressing the weather aberrations, long dryspells, water conservation and rainwater harvesting are the key for making them green with sustainable yields, increased crop productivity by adopting efficient water management techniques for conservation of both green and blue water. Also these lands contribute 40% of agricultural production with nutrious cereals, oil seeds and pulses besides other cotton and commercial crops. Since rainfed farming is rain dependent, better management of rainwater, soil moisture, and critical irrigation are the key to helping the greatest number of small holders, for three main reasons: (1) It cuts the yield losses from dry spells (2) It gives farmers the security they need to risk investing in other inputs such as fertilizers and high-yielding varieties. Farmers dare not risk the little they have buying inputs for a crop that may fail for lack of water and (3) It allows farmers to grow higher value market crops, such as vegetables or fruits. These are more sensitive to water stress and require costlier inputs. Improving agricultural productivity in areas that depend on rainfall has the greatest potential to reduce poverty and hunger, in large parts of Asia. Current yields in many rainfed settings are low and improving rainfed farming could double or quadruple yields. Such yields “gaps” are greatest for maize, sorghum, and millet and closing these gaps promises huge social, economic, and environmental paybacks (CAWMA, 2007). India receives an average of 3,000 billion cubic meters (BCM) of rainfall every year. It has been estimated that the average surface runoff (SRO) is about 1869 BCM, out of which the utilizable surface water available is 690 BCM, and ground water available is 433 BCM. An additional 200 BCM is available through interlinking of rivers in different regions of India. From the water balance of India’s water resources, the SRO contributing to oceans is 491 BCM after meeting the requirement of environmental flows of 55 BCM (10% maximum) Emerging approaches (RS, AI, ML, Drones etc) for crop management &assessment 792 | Page
International Conference on Reimagining Rainfed Agro-ecosystems: Challenges & Opportunities during 22-24, December 2022 at ICAR-CRIDA, Hyderabad which can be harvested for conservation of water and increase crop yield through proper integrated water policy. The National water policy broadly describes the water allocations and utilization patterns for major sectors of Agriculture, Industries, Domestic and environment. National Water Policy (NWP, 2012) currently in force was drafted in 2012 and is the third such policy since 1987. The NWP 2012 policy was the concept of an Integrated Water Resources Management approach that took the “river basin/ sub-basin” as a unit for planning, development and management of water resources. It states that the land, soil, energy and water management with scientific inputs should be used to evolve different agricultural strategies and improve soil and water productivity to manage droughts. Integrated farming systems and nonagricultural developments may also be considered for livelihood support and poverty alleviation. Policy intervention is also made facilitating relaxation in project clearances, funding etc. for drought-prone areas. However, so far in the country, the rainfed agriculture is neglected or not that much focused in the national policy document which basically contributes to the generation of maximum runoff potential to the storage from different river basins of the country. These rainfed grey lands suffer from extreme rainfall deficits, high intense rainfall with soil degradation through erosion, long dryspells, but contribute to 80% of the production of pulses, oilseeds and coarse cereals. Hence, it is necessary to rethink of or policy with proper allocations of green and blue water in terms of On-farm rainwater harvesting and water conservation technologies which are proved cost effective. The rainfed region is characterized into three major groups based on average annual rainfall (AAR) of low (500 – 750 mm), Medium (750-1200mm) and high (>1200mm). The areal distributions of rainfed area are 22Mha, 27Mha and 23Mha in the above group of AAR across the different river basins of the country. Policymakers need to focus on both design and development of water resources infrastructure from a multiple-use system perspective. By doing so they can maximize the benefits per unit of water ensuring water security. Multiple-use systems for domestic use, crop production, aquaculture, agroforestry, and livestock effectively improve water productivity and reduce poverty. The contributions to livelihoods, especially for poor households, of these multiple uses are substantial. As per GOI directives, it is not only Per drop more crop but also more nutrition per drop for food security in rainfed regions. The present paper deals with the perspectives of rainwater harvesting, water conservation and its investments for converting these low productivity drylands into high productivity green lands in the country for the consideration of national water policy. 793 | Page Emerging approaches (RS, AI, ML, Drones etc) for crop management &assessment
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International Conference on Reimagining Rainfed Agro-ecosystems: Challenges &<br />
Opportunities during 22-24, December 2022 at ICAR-CRIDA, Hyderabad<br />
which can be harvested for conservation <strong>of</strong> water and increase crop yield through proper<br />
integrated water policy.<br />
The National water policy broadly describes the water allocations and utilization patterns for<br />
major sectors <strong>of</strong> Agriculture, Industries, Domestic and environment. National Water Policy<br />
(NWP, 2012) currently in force was drafted in 2012 and is the third such policy since 1987.<br />
The NWP 2012 policy was the concept <strong>of</strong> an Integrated Water Resources Management<br />
approach that took the “river basin/ sub-basin” as a unit for planning, development and<br />
management <strong>of</strong> water resources. It states that the land, soil, energy and water management<br />
with scientific inputs should be used to evolve different agricultural strategies and improve<br />
soil and water productivity to manage droughts. Integrated farming systems and nonagricultural<br />
developments may also be considered for livelihood support and poverty<br />
alleviation. Policy intervention is also made facilitating relaxation in project clearances,<br />
funding etc. for drought-prone areas. However, so far in the country, the rainfed agriculture is<br />
neglected or not that much focused in the national policy document which basically contributes<br />
to the generation <strong>of</strong> maximum run<strong>of</strong>f potential to the storage from different river basins <strong>of</strong> the<br />
country. These rainfed grey lands suffer from extreme rainfall deficits, high intense rainfall<br />
with soil degradation through erosion, long dryspells, but contribute to 80% <strong>of</strong> the production<br />
<strong>of</strong> pulses, oilseeds and coarse cereals. Hence, it is necessary to rethink <strong>of</strong> or policy with proper<br />
allocations <strong>of</strong> green and blue water in terms <strong>of</strong> On-farm rainwater harvesting and water<br />
conservation technologies which are proved cost effective. The rainfed region is characterized<br />
into three major groups based on average annual rainfall (AAR) <strong>of</strong> low (500 – 750 mm),<br />
Medium (750-1200mm) and high (>1200mm). The areal distributions <strong>of</strong> rainfed area are<br />
22Mha, 27Mha and 23Mha in the above group <strong>of</strong> AAR across the different river basins <strong>of</strong> the<br />
country.<br />
Policymakers need to focus on both design and development <strong>of</strong> water resources infrastructure<br />
from a multiple-use system perspective. By doing so they can maximize the benefits per unit<br />
<strong>of</strong> water ensuring water security. Multiple-use systems for domestic use, crop production,<br />
aquaculture, agr<strong>of</strong>orestry, and livestock effectively improve water productivity and reduce<br />
poverty. The contributions to livelihoods, especially for poor households, <strong>of</strong> these multiple uses<br />
are substantial. As per GOI directives, it is not only Per drop more crop but also more nutrition<br />
per drop for food security in rainfed regions. The present paper deals with the perspectives <strong>of</strong><br />
rainwater harvesting, water conservation and its investments for converting these low<br />
productivity drylands into high productivity green lands in the country for the consideration<br />
<strong>of</strong> national water policy.<br />
793 | Page Emerging approaches (RS, AI, ML, Drones etc) for crop management &assessment