ORCID Profile
0000-0001-7658-8144
Current Organisations
Queensland Alliance for Agriculture and Food Innovation
,
University of Adelaide
,
Punjab Agricultural University
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Publications
Combination Antiretroviral Therapy and the Risk of Myocardial Infarction
Publisher: Massachusetts Medical Society
Date: 20-11-2003
DOI: 10.1056/NEJMOA030218
Climate risk perceptions and perceived yield loss increases agricultural technology adoption in the polder areas of Bangladesh
Publisher: Elsevier BV
Date: 08-2022
Evaluation of tradeoffs in land and water productivity of dry seeded rice as affected by irrigation schedule
Publisher: Elsevier BV
Date: 03-2012
Irrigation Advisory Service: A comprehensive solution toward sustainable water management for rice production in the Philippines
Publisher: American Society of Agricultural and Biological Engineers
Date: 2019
Options for increasing the productivity of the rice–wheat system of north west India while reducing groundwater depletion. Part 2. Is conservation agriculture the answer?
Publisher: Elsevier BV
Date: 03-2015
Effective Management of Scarce Water Resources in North-West India
Publisher: Elsevier
Date: 2013
Crop performance in permanent raised bed rice-wheat cropping system in Punjab, India
Publisher: Elsevier BV
Date: 2009
New records of very high nitrous oxide fluxes from rice cannot be generalized for water management and climate impacts
Publisher: Proceedings of the National Academy of Sciences
Date: 22-01-2019
Options for increasing the productivity of the rice–wheat system of north-west India while reducing groundwater depletion. Part 1. Rice variety duration, sowing date and inclusion of mungbean
Publisher: Elsevier BV
Date: 03-2015
A global analysis of alternative tillage and crop establishment practices for economically and environmentally efficient rice production
Publisher: Springer Science and Business Media LLC
Date: 24-08-2017
DOI: 10.1038/S41598-017-09742-9
Abstract: Alternative tillage and rice establishment options should aim at less water and labor to produce similar or improved yields compared with traditional puddled-transplanted rice cultivation. The relative performance of these practices in terms of yield, water input, and economics varies across rice-growing regions. A global meta and mixed model analysis was performed, using a dataset involving 323 on-station and 9 on-farm studies (a total of 3878 paired data), to evaluate the yield, water input, greenhouse gas emissions, and cost and net return with five major tillage/crop establishment options. Shifting from transplanting to direct-seeding was advantageous but the change from conventional to zero or reduced tillage reduced yields. Direct-seeded rice under wet tillage was the best alternative with yield advantages of 1.3–4.7% (p 0.05) and higher net economic return of 13% (p 0.05), accompanied by savings of water by 15% (p 0.05) and a reduction in cost by 2.4–8.8%. Direct-seeding under zero tillage was another potential alternative with high savings in water input and cost of cultivation, with no yield penalty. The alternative practices reduced methane emissions but increased nitrous oxide emissions. Soil texture plays a key role in relative yield advantages, and therefore refinement of the practice to suit a specific agro-ecosystem is needed.
Intensification and diversification increase land and water productivity and profitability of rice-based cropping systems on the High Ganges River Floodplain of Bangladesh
Publisher: Elsevier BV
Date: 08-2017
Trans-Disciplinary Responses to Climate Change: Lessons from Rice-Based Systems in Asia
Publisher: MDPI AG
Date: 20-02-2020
DOI: 10.3390/CLI8020035
Abstract: Climate change will continue to have a largely detrimental impact on the agricultural sector worldwide because of predicted rising temperatures, variable rainfall, and an increase in extreme weather events. Reduced crop yields will lead to higher food prices and increased hardship for low income populations, especially in urban areas. Action on climate change is one of the Sustainable Development Goals (SDG 13) and is linked to the Paris Climate Agreement. The research challenge posed by climate change is so complex that a trans-disciplinary response is required, one that brings together researchers, practitioners, and policy-makers in networks where the lines between “research” and “development” become deliberately blurred. Fostering such networks will require researchers, throughout the world, not only to work across disciplines but also to pursue new South–North and South–South partnerships incorporating policy-makers and practitioners. We use our erse research experiences to describe the emergence of such networks, such as the Direct Seeded Rice Consortium (DSRC) in South and Southeast Asia, and to identify lessons on how to facilitate and strengthen the development of trans-disciplinary responses to climate change.
Crop diversification in rice-based systems in the polders of Bangladesh: Yield stability, profitability, and associated risk
Publisher: Elsevier BV
Date: 02-2021
Effects of tillage and mulch on the growth, yield and irrigation water productivity of a dry seeded rice-wheat cropping system in north-west India
Publisher: Elsevier BV
Date: 09-2016
Determinants in the Adoption of Alternate Wetting and Drying Technique for Rice Production in a Gravity Surface Irrigation System in the Philippines
Publisher: MDPI AG
Date: 21-12-2021
DOI: 10.3390/W14010005
Abstract: Alternate Wetting and Drying (AWD) is a well-known low-cost water-saving and climate change adaptation and mitigation technique for irrigated rice. However, its adoption rate has been low despite the decade of dissemination in Asia, especially in the Philippines. Using cross-sectional farm-level survey data, this study empirically explored factors shaping AWD adoption in a gravity surface irrigation system. We used regression-based approaches to examine the factors influencing farmers’ adoption of AWD and its impact on yield. Results showed that the majority of the AWD adopters were farmers who practiced enforced rotational irrigation (RI) scheduling within their irrigators’ association (IA). With the current irrigation management system, the probability of AWD implementation increases when farmers do not interfere with the irrigation schedule (otherwise they opt to go with flooding). Interestingly, the awareness factor did not play a significant role in the farmers’ adoption due to the RI setup. However, the perception of water management as an effective weed control method was positively significant, suggesting that farmers are likely to adopt AWD if weeds are not a major issue in their field. Furthermore, the impact on grain yields did not differ with AWD. Thus, given the RI scheduling already in place within the IA, we recommend fine-tuning this setup following the recommended safe AWD at the IA scale.
Estimating soil evaporation in dry seeded rice and wheat crops after wetting events
Publisher: Elsevier BV
Date: 05-2019
Evaluation and application of ORYZA2000 for irrigation scheduling of puddled transplanted rice in north west India
Publisher: Elsevier BV
Date: 05-2011
Assessing alternative crop establishment methods with a sustainability lens in rice production systems of Eastern India
Publisher: Elsevier BV
Date: 2019
Evaluation of gravity‐led and energy‐fed drainage for sustaining food security in the polders of the coastal zone of Bangladesh
Publisher: Wiley
Date: 05-03-2022
DOI: 10.1002/IRD.2698
Abstract: Bangladesh is currently self‐sufficient in rice production but faces immense challenges of sustaining that self‐sufficiency because of population growth and climate change. There is little scope to further increase cropping intensity except in the underutilized 1.2 Mha of lands enclosed in the polders of the coastal zone. The main impediment to wide‐scale adoption of more productive cropping systems in the polders is poor drainage that often results in waterlogging. Therefore, a study was conducted in polder 30, in the medium‐salinity region of the south‐west coastal zone, to examine the biophysical and economic feasibility of low‐cost gravity (gravity‐led) drainage. The results show a considerable opportunity to increase rice production in the polders with improved drainage practices. The feasibility of drainage through pumping (energy‐fed) was also assessed, given that there are already situations where gravity‐led drainage is not feasible, and these situations are likely to increase because of climate change‐induced sea level rise and the sinking of polder lands. Energy‐fed drainage was demonstrated to be profitable with a yield gain of at least 1.5 t/ha from just the wet season further intensification to 50% of polder lands may yield an additional harvest of 3–6 million tons of rice per year. Therefore, investing in improved drainage management in the polders could be a major game changer in sustaining the food security of the nation, especially the climate‐vulnerable polder communities of Bangladesh.
Community water management to intensify agricultural productivity in the polders of the coastal zone of Bangladesh
Publisher: Springer Science and Business Media LLC
Date: 20-12-2020
Managing agricultural water resources: Addressing the complexity of innovation, social perspectives, and water governance in Sri Lanka
Publisher: Wiley
Date: 24-02-2022
DOI: 10.1002/IRD.2693
Abstract: Irrigation plays a vital role in world food security. Agriculture accounts for 70% of freshwater withdrawals worldwide, and the figure is even higher in developing countries like Sri Lanka. The rapid expansion of anthropogenic activities, together with the anticipated climatic risks associated with them, is exacerbating the problem of increasing agricultural water demand. Although it has been recognized for decades, improving irrigation water‐use efficiency and water productivity is still considered the most realistic option for addressing the challenge of sustainable management of water resources. However, adoption of recommended water‐efficient technologies and concepts remains elusive in practice, highlighting the gaps created by failing to consider social perspectives in developing water management strategies. As a result, the effectiveness of water governance has often been questioned in terms of performance and adoption of innovative technologies. This paper reviews and discusses the complexity of innovation through a technical, social, and institutional lens by reviewing available research on Sri Lanka's river basins and presents a perspective on opportunities for improving irrigation water management.
Comparison of dry seeded and puddled transplanted rainy season rice on the High Ganges River Floodplain of Bangladesh
Publisher: Elsevier BV
Date: 05-2018
Response and resilience of Asian agrifood systems to COVID-19: An assessment across twenty-five countries and four regional farming and food systems
Publisher: Elsevier BV
Date: 10-2021
Assessing the roles of farmer organizations for effective agricultural water management in Sri Lanka
Publisher: Elsevier BV
Date: 02-2023
Effect of water management on dry seeded and puddled transplanted rice. Part 1: Crop performance
Publisher: Elsevier BV
Date: 2011
Effect of water management on dry seeded and puddled transplanted rice
Publisher: Elsevier BV
Date: 2011
Halting the Groundwater Decline in North-West India—Which Crop Technologies will be Winners?
Publisher: Elsevier
Date: 2010
Why Technologies Often Fail to Scale: Policy and Market Failures behind Limited Scaling of Alternate Wetting and Drying in Rice in Bangladesh
Publisher: MDPI AG
Date: 25-05-2020
DOI: 10.3390/W12051510
Abstract: Rapid expansion of groundwater use for irrigation for dry season rice production in Bangladesh has led to overuse, deterioration of groundwater quality, increased cost of irrigation, and higher greenhouse gas emissions. The ergence between marginal private and social cost of irrigation due to market failures in the presence of these externalities, has resulted in excessive use of groundwater. A combination of policy reforms and improvements in irrigation practices are hence needed to reduce irrigation water use. The paper analyses why an improved irrigation practice, known as “alternate wetting and drying (AWD)” that can potentially reduce irrigation water use substantially, has failed to scale despite widespread testing and promotion in Bangladesh for over a decade. The main reason for this failure to scale is the lack of economic incentives to save water as pricing is based on per unit area irrigated, not on the amount of water used. This paper highlights the dynamics of the water market and pricing in Bangladesh, along with biophysical and social constraints to farmer adoption of AWD. It also proposes changes in policy incentives, new directions for crop and water management research, and institutional reforms for wider adoption of AWD and other water-saving practices.
Setting sustainability targets for irrigated rice production and application of the Sustainable Rice Platform performance indicators
Publisher: Elsevier BV
Date: 2022
Spatio-temporal analysis of water quality for pesticides and other agricultural pollutants in Deduru Oya river basin of Sri Lanka
Publisher: Elsevier BV
Date: 2022
Maintaining Diversity of Integrated Rice and Fish Production Confers Adaptability of Food Systems to Global Change
Publisher: Frontiers Media SA
Date: 09-11-2020
Effects of tillage and mulch on soil evaporation in a dry seeded rice-wheat cropping system
Publisher: Elsevier BV
Date: 05-2021
Performance of direct-seeded basmati rice in loamy sand in semi-arid sub-tropical India
Publisher: Elsevier BV
Date: 12-2007
Productivity trade-off with different water regimes and genotypes of rice under non-puddled conditions in Eastern India
Publisher: Elsevier BV
Date: 06-2018
Effect of crop establishment methods and weed control treatments on weed management, and rice yield
Publisher: Elsevier BV
Date: 02-2015
Land gradient and configuration effects on yield, irrigation amount and irrigation water productivity in rice-wheat and maize-wheat cropping systems in Eastern India
Publisher: Elsevier BV
Date: 09-2021
Assessing Potential Environmental Impacts of Pesticide Usage in Paddy Ecosystems: A Case Study in the Deduru Oya River Basin, Sri Lanka
Publisher: Wiley
Date: 18-01-2022
DOI: 10.1002/ETC.5261
Abstract: Rice paddies are unique ecosystems that provide rich wetland habitat. Their enduring existence across vast stretches of land has led them to evolve into unique systems serving a erse assemblage of organisms and sustaining a staple grain for many people. With food demand rising, agricultural intensification through agrochemical application is a common practice used to boost food production in developing countries, including Sri Lanka. The aim of the present study was to assess the concentration of pesticide residues in water in rice ecosystems and discover their potential impacts on both environmental health and the most common fauna groups across a cropping year in Sri Lanka. A total of 270 water s les from waters associated with paddy fields within a watershed were analyzed for 20 commonly used pesticides in addition, local farm holders were surveyed to assess pesticide usage details in three selected paddy tracts. We then used the Cornell University environmental impact quotient (EIQ) calculator and the ECOTOX Knowledgebase to determine the exposure risk associated with in idual pesticides relative to their application rates and aquatic concentrations. Survey results demonstrate that several pesticides were overapplied at rates 1.2–11 times the recommended application, and the EIQ demonstrated high environmental risk of two of the agrochemicals detected, 2‐methyl‐4‐chlorophenoxyacetic and diazinon. Fish, hibians, insects, and beetles were found to have a wide range of potential adverse outcomes from exposure to diazinon, captan, thiamethoxam, and chlorantraniliprole. To balance the trade‐offs between food security and ecosystem sustainability, the present study recommends that adoption of quantifiable environmental health indicators be considered as part of the national policy regulating pesticide use. Environ Toxicol Chem 2022 :343–355. © 2021 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.
Disentangling Challenges to Scaling Alternate Wetting and Drying Technology for Rice Cultivation: Distilling Lessons From 20 Years of Experience in the Philippines
Publisher: Frontiers Media SA
Date: 21-06-2021
DOI: 10.3389/FSUFS.2021.675818
Abstract: Alternate wetting and drying (AWD) is a low-cost innovation that enables farmers to adapt to increasingly water scarcity conditions (such as drought), increase overall farm production efficiency, and mitigate greenhouse gas (GHG) emissions. It is seen as a pathway for transforming agri-food systems into more resilient, productive, biologically erse, and equitable forms, ensuring our commitments to the UN Sustainable Development Goals (SDGs). This paper uses scaling up and innovation uncertainty frameworks to review the success and challenges of AWD's 20-year scaling trajectory in the Philippines and explain the key factors that have influenced its outcomes. The framework adapted for this study is also used to examine the fitness between the scaling context and requirements, organizational mission, and corresponding capabilities. Findings show the innovation platform that vertically integrated key actors and locally adapted AWD has helped foster essential breakthroughs in creating an enabling environment that took AWD to national policy adoption in the Philippines. However, the dominant focus on technology transfer, product focus, and preference for controlled environments in the scaling practice has neglected many important contextual factors, allowing mismatches in enabling policy incentives, institutions, and scale to diminish the impacts of AWD in gravity-based systems. Our findings suggest that rethinking and re-envisioning the ways in which the impact can be scaled in irrigation rice systems using AWD is critical to sustaining food security and making the agriculture sector more resilient to climate change.
Establishment method effects on crop performance and water productivity of irrigated rice in the tropics
Publisher: Elsevier BV
Date: 09-2014
Assessing impact of salinity and climate scenarios on dry season field crops in the coastal region of Bangladesh
Publisher: Elsevier BV
Date: 06-2022
Growing Rice in Eastern India: New Paradigms of Risk Reduction and Improving Productivity
Publisher: Elsevier
Date: 2017
Related Organisations
Queensland Alliance For Agriculture And Food Innovation
Location: Australia
Related Funding Activities
No related grants have been discovered for Sudhir Yadav.