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Ravi Nandi; Swamikannu Nedumaran. Correction to: Understanding the Aspirations of Farming Communities in Developing Countries: A Systematic Review of the Literature. The European Journal of Development Research 2021, 33, 1141 -1141.
AMA StyleRavi Nandi, Swamikannu Nedumaran. Correction to: Understanding the Aspirations of Farming Communities in Developing Countries: A Systematic Review of the Literature. The European Journal of Development Research. 2021; 33 (4):1141-1141.
Chicago/Turabian StyleRavi Nandi; Swamikannu Nedumaran. 2021. "Correction to: Understanding the Aspirations of Farming Communities in Developing Countries: A Systematic Review of the Literature." The European Journal of Development Research 33, no. 4: 1141-1141.
This study surveys the panorama of research on the importance of aspirations of farming communities, identifies research gaps and prospects for future research. The analysis of 22 studies identified from 419 research articles sheds light on the relationships between aspirations, agriculture, women’s empowerment, poverty, and rural youth. Aspirations of the rural poor play a significant role in shaping their activities and investments. Furthermore, the poor and those who are exposed to natural disasters are more likely suffering from aspiration failure and their resilience needs to be built. Specifically, women’s empowerment could be supported through raising aspirations. In addition, intergenerational aspirations and corresponding investment plans in agriculture are in absolute contrast and parental desires and their children’s aspirations do not align. Overall, development program-specific research is needed to determine policies and programs that successfully and cost-effectively raise the rural poor's aspirations and thereby improve livelihoods in developing countries.
Ravi Nandi; Swamikannu Nedumaran. Understanding the Aspirations of Farming Communities in Developing Countries: A Systematic Review of the Literature. The European Journal of Development Research 2021, 1 -25.
AMA StyleRavi Nandi, Swamikannu Nedumaran. Understanding the Aspirations of Farming Communities in Developing Countries: A Systematic Review of the Literature. The European Journal of Development Research. 2021; ():1-25.
Chicago/Turabian StyleRavi Nandi; Swamikannu Nedumaran. 2021. "Understanding the Aspirations of Farming Communities in Developing Countries: A Systematic Review of the Literature." The European Journal of Development Research , no. : 1-25.
We study the effect of the COVID-19 pandemic on the groundnut value chain and all the actors involved in its value chain in Ananthapuramu district of Andhra Pradesh, a leading groundnut producing state in south India. The results revealed that the COVID-19 pandemic created a double burden on farmers by disrupting farm production on one side and decreased diet diversity on the other. Disruption in farm productions resulted in a decline in household income and increased consumer food prices. The effect on farmers snowballed to other actors in the value chain, and all the actors were affected variably. Availability of storage infrastructure would have saved the farmer’s household income to some extent during the pandemic. Supply of diverse nutrient foods through the existing public distribution system, which mostly provides wheat and rice, might have helped tackle the diet diversity issue amongst farmers. Farmer’s collectives were perceived to reduce the negative impact during natural disasters like the COVID-19 pandemic by helping to organise smallholder farmers, minimise transaction costs and increase their bargaining power. In addition, effective farm extension services, including market information, could have benefited farmers during the crisis.
Ravi Nandi; Swamikannu Nedumaran; Aravazhi Selvaraj; Saikat Datta Mazumdar; Shalander Kumar. The COVID-19 Induced Disruptions across Groundnut Value Chain: Empirical Evidence from South India. Sustainability 2021, 13, 1707 .
AMA StyleRavi Nandi, Swamikannu Nedumaran, Aravazhi Selvaraj, Saikat Datta Mazumdar, Shalander Kumar. The COVID-19 Induced Disruptions across Groundnut Value Chain: Empirical Evidence from South India. Sustainability. 2021; 13 (4):1707.
Chicago/Turabian StyleRavi Nandi; Swamikannu Nedumaran; Aravazhi Selvaraj; Saikat Datta Mazumdar; Shalander Kumar. 2021. "The COVID-19 Induced Disruptions across Groundnut Value Chain: Empirical Evidence from South India." Sustainability 13, no. 4: 1707.
A significant share of undernourished people are smallholder farmers in low and middle-income countries. Recent studies advocate improving market access as an important pathway towards improving the dietary diversity of farm households over increasing farm production diversity. A systematic review of five databases using Priori criteria identified 28 original studies from 14 low and middle income countries by screening 786 articles using different indicators of market access, diets, and nutrition. Most of the studies reported a consistent positive association between access to markets and dietary diversity, and few studies reported positive or negative association. However, findings are context-specific from several countries in Africa and Asia. Further research is needed to conclude that improving market access is an effective pathway to improve a farm household's dietary quality. Eight research priorities are identified based on the gaps in the existing research literature.
Ravi Nandi; S. Nedumaran; P. Ravula. The interplay between food market access and farm household dietary diversity in low and middle income countries: A systematic review of literature. Global Food Security 2021, 28, 100484 .
AMA StyleRavi Nandi, S. Nedumaran, P. Ravula. The interplay between food market access and farm household dietary diversity in low and middle income countries: A systematic review of literature. Global Food Security. 2021; 28 ():100484.
Chicago/Turabian StyleRavi Nandi; S. Nedumaran; P. Ravula. 2021. "The interplay between food market access and farm household dietary diversity in low and middle income countries: A systematic review of literature." Global Food Security 28, no. : 100484.
In developing countries, food-borne diseases, attributable to lack of, or inappropriate, food hygiene and handling practices at home, are expected to increase due to a rapid growth in the consumption of fats and animal source foods. The context-specific and situational practices corresponding to underlying traits of food hygiene and handling practices for home-cooked food were investigated for a set of 662 randomly selected households in Hyderabad, India. Results indicate that about one-third of the households lack access to a refrigerator. Of those with a refrigerator, a majority (83%) had the temperature set at medium, with an actual temperature ranging from 8 to 11 °C. Results also show that smell, followed by food appearance rather than taste or labelled expiry dates were used as the main criteria for edibility. Furthermore, six indicators related to handling, storage and cooking non-vegetarian food and three indicators related to storage of the cooked food were assessed. For households with a refrigerator, the latent class analysis identified three exclusive and exhaustive subgroups of households representing the heterogeneity of handling and hygiene traits, while two subgroups were identified for households not having a refrigerator. Only a small proportion of households (12.6%) with a refrigerator were profiled as having adequate and consistent practices. Remaining subgroups revealed substantial within-group variations in terms of consistency in certain behaviors. Next, latent class modelling with covariates related to socio-demographic, socio-economic, socio-spatial variables and health or dietary outcomes showed that having higher than a primary school education, having a high percentage of food expenditure, or non-optimal refrigerator temperature were predictive of the latent class with more adequate practices. For households without a refrigerator, five covariates related to social class, age, income, and obesity distinguished the latent classes. These findings of latent trait-specific behaviors have implications for actions aiming to inform and direct behavioral change interventions on food safety practices in the developing countries.
Carl Johan Lagerkvist; Assem Abu Hatab; Swamikannu Nedumaran; Padmaja Ravula. A latent class analysis of food hygiene and handling practices among urban and peri-urban residents in Hyderabad, India. Food Control 2020, 121, 107677 .
AMA StyleCarl Johan Lagerkvist, Assem Abu Hatab, Swamikannu Nedumaran, Padmaja Ravula. A latent class analysis of food hygiene and handling practices among urban and peri-urban residents in Hyderabad, India. Food Control. 2020; 121 ():107677.
Chicago/Turabian StyleCarl Johan Lagerkvist; Assem Abu Hatab; Swamikannu Nedumaran; Padmaja Ravula. 2020. "A latent class analysis of food hygiene and handling practices among urban and peri-urban residents in Hyderabad, India." Food Control 121, no. : 107677.
International crop‐related research as conducted by the CGIAR uses crop modeling for a variety of purposes. By linking crop models with economic models and approaches, crop model outputs can be effectively used as inputs into socio‐economic modeling efforts for priority setting and policy advice using ex‐ante impact assessment of technologies and scenario analysis. This requires interdisciplinary collaboration and very often collaboration across a variety of research organizations. This study highlights the key topics, purposes, and approaches of socio‐economic analysis within the CGIAR related to cropping. Although each CGIAR center has a different mission, all CGIAR centers share a common strategy of striving towards a world free of hunger, poverty, and environmental degradation. This means research is mostly focused towards resource‐constrained smallholder farmers. The review covers global modeling efforts using the IMPACT model to farm household bio‐economic models for assessing the potential impact of new technologies on farming systems and livelihoods. Although the CGIAR addresses all aspects of food systems, the focus of this review is on crop commodities and the economic analysis linked to crop‐growth model results. This study, while not a comprehensive review, provides insights into the richness of the socio‐economic modeling endeavors within the CGIAR. The study highlights the need for interdisciplinary approaches to address the challenges this type of modeling faces. This article is protected by copyright. All rights reserved
Gideon Kruseman; Subir Bairagi; Adam M. Komarek; Anabel Molero Milan; Swamikannu Nedumaran; Athanasios Petsakos; Steven Prager; Yigezu A. Yigezu. CGIAR modeling approaches for resource‐constrained scenarios: II. Models for analyzing socioeconomic factors to improve policy recommendations. Crop Science 2020, 60, 568 -581.
AMA StyleGideon Kruseman, Subir Bairagi, Adam M. Komarek, Anabel Molero Milan, Swamikannu Nedumaran, Athanasios Petsakos, Steven Prager, Yigezu A. Yigezu. CGIAR modeling approaches for resource‐constrained scenarios: II. Models for analyzing socioeconomic factors to improve policy recommendations. Crop Science. 2020; 60 (2):568-581.
Chicago/Turabian StyleGideon Kruseman; Subir Bairagi; Adam M. Komarek; Anabel Molero Milan; Swamikannu Nedumaran; Athanasios Petsakos; Steven Prager; Yigezu A. Yigezu. 2020. "CGIAR modeling approaches for resource‐constrained scenarios: II. Models for analyzing socioeconomic factors to improve policy recommendations." Crop Science 60, no. 2: 568-581.
Purpose The purpose of this paper is to estimate the market demand and compare the average market margins for six broad categories of fresh produce in different retail formats across five select cities of the country. It also tries to qualitatively understand the supply chain management practices of these retailers across cities. Design/methodology/approach Registered retail outlets were selected randomly from online sources. Market potential was estimated as the average sales of each category of fresh produce. Personal interviews were conducted with the market players in order to collect qualitative data about their supply chain management practices. Findings Potatoes, onions and tomatoes are the largest consumed category of fresh produce across cities. Consumers in Tier 1 and Tier 2 cities exhibit different buying behavior and preferences. Large retailers and small retailers coexist in the cities. Marketing margins of retail formats are not uniform across cities. Research limitations/implications The study did not capture the reasons for the differences observed in consumer preferences and buying behavior across cities. The study has taken into consideration only registered neighborhood stores in the study locations. Originality/value To the best of the authors’ knowledge, the paper is first of its kind which has attempted to estimate the categorywise market potential of fresh produce across study cities.
Aravazhi Selvaraj; Swamikannu Nedumaran; Disha Bose; Jyosthnaa Padmanabhan; Yesudas Pangiraj; Kiran Sharma. Outlook on organized retailing of perishable produce in India: cross-city comparison. Journal of Agribusiness in Developing and Emerging Economies 2019, 9, 352 -368.
AMA StyleAravazhi Selvaraj, Swamikannu Nedumaran, Disha Bose, Jyosthnaa Padmanabhan, Yesudas Pangiraj, Kiran Sharma. Outlook on organized retailing of perishable produce in India: cross-city comparison. Journal of Agribusiness in Developing and Emerging Economies. 2019; 9 (4):352-368.
Chicago/Turabian StyleAravazhi Selvaraj; Swamikannu Nedumaran; Disha Bose; Jyosthnaa Padmanabhan; Yesudas Pangiraj; Kiran Sharma. 2019. "Outlook on organized retailing of perishable produce in India: cross-city comparison." Journal of Agribusiness in Developing and Emerging Economies 9, no. 4: 352-368.
The study assessed the potential for use of millets in mid-day school meal programs for better nutritional outcomes of children in a peri-urban region of Karnataka, India, where children conventionally consumed a fortified rice-based mid-day meal. For a three-month period, millet-based mid-day meals were fed to 1500 adolescent children at two schools, of which 136 were studied as the intervention group and were compared with 107 other children in two other schools that did not receive the intervention. The intervention design was equivalent to the parallel group, two-arm, superiority trial with a 1:1 allocation ratio. The end line allocation ratio was 1.27:1 due to attrition. It was found that there was statistically significant improvement in stunting (p = 0.000) and the body mass index (p = 0.003) in the intervention group and not in the control group (p = 0.351 and p = 0.511, respectively). The sensory evaluation revealed that all the millet-based menu items had high acceptability, with the highest scores for the following three items: finger millet idli, a steam cooked fermented savory cake; little and pearl millet bisi belle bath, a millet-lentil hot meal; and upma, a pearl and little millet-vegetable meal. These results suggest significant potential for millets to replace or supplement rice in school feeding programs for improved nutritional outcomes of children.
Seetha Anitha; Joanna Kane-Potaka; Takuji W. Tsusaka; Deepti Tripathi; Shweta Upadhyay; Ajay Kavishwar; Ashok Jalagam; Nidhi Sharma; Swamikannu Nedumaran. Acceptance and Impact of Millet-Based Mid-Day Meal on the Nutritional Status of Adolescent School Going Children in a Peri Urban Region of Karnataka State in India. Nutrients 2019, 11, 2077 .
AMA StyleSeetha Anitha, Joanna Kane-Potaka, Takuji W. Tsusaka, Deepti Tripathi, Shweta Upadhyay, Ajay Kavishwar, Ashok Jalagam, Nidhi Sharma, Swamikannu Nedumaran. Acceptance and Impact of Millet-Based Mid-Day Meal on the Nutritional Status of Adolescent School Going Children in a Peri Urban Region of Karnataka State in India. Nutrients. 2019; 11 (9):2077.
Chicago/Turabian StyleSeetha Anitha; Joanna Kane-Potaka; Takuji W. Tsusaka; Deepti Tripathi; Shweta Upadhyay; Ajay Kavishwar; Ashok Jalagam; Nidhi Sharma; Swamikannu Nedumaran. 2019. "Acceptance and Impact of Millet-Based Mid-Day Meal on the Nutritional Status of Adolescent School Going Children in a Peri Urban Region of Karnataka State in India." Nutrients 11, no. 9: 2077.
Many Indian capitals are rapidly becoming megacities due to industrialization and rural–urban emigration. Land use within city boundaries has changed dynamically, accommodating development while replacing traditional land-use patterns. Using Landsat-8 and IRS-P6 data, this study investigated land-use changes in urban and peri-urban Hyderabad and their influence on land-use and land-cover. Advanced methods, such as spectral matching techniques with ground information were deployed in the analysis. From 2005 to 2016, the wastewater-irrigated area adjacent to the Musi river increased from 15,553 to 20,573 hectares, with concurrent expansion of the city boundaries from 38,863 to 80,111 hectares. Opportunistic shifts in land-use, especially related to wastewater-irrigated agriculture, emerged in response to growing demand for fresh vegetables and urban livestock feed, and to easy access to markets due to the city’s expansion. Validation performed on the land-use maps developed revealed 80–85% accuracy.
Murali Krishna Gumma; Irshad Mohammad; Swamikannu Nedumaran; Anthony Whitbread; Carl Johan Lagerkvist. Urban Sprawl and Adverse Impacts on Agricultural Land: A Case Study on Hyderabad, India. Remote Sensing 2017, 9, 1136 .
AMA StyleMurali Krishna Gumma, Irshad Mohammad, Swamikannu Nedumaran, Anthony Whitbread, Carl Johan Lagerkvist. Urban Sprawl and Adverse Impacts on Agricultural Land: A Case Study on Hyderabad, India. Remote Sensing. 2017; 9 (11):1136.
Chicago/Turabian StyleMurali Krishna Gumma; Irshad Mohammad; Swamikannu Nedumaran; Anthony Whitbread; Carl Johan Lagerkvist. 2017. "Urban Sprawl and Adverse Impacts on Agricultural Land: A Case Study on Hyderabad, India." Remote Sensing 9, no. 11: 1136.
Developing cultivars with traits that can enhance and sustain productivity under climate change will be an important climate smart adaptation option. The modified CSM-CERES-Pearl millet model was used to assess yield gains by modifying plant traits determining crop maturity duration, potential yield and tolerance to drought and heat in pearl millet cultivars grown at six locations in arid (Hisar, Jodhpur, Bikaner) and semi-arid (Jaipur, Aurangabad and Bijapur) tropical India and two locations in semi-arid tropical West Africa (Sadore in Niamey and Cinzana in Mali). In all the study locations the yields decreased when crop maturity duration was decreased by 10% both in current and future climate conditions; however, 10% increase in crop maturity significantly (p < 0.05) increased yields at Aurangabad and Bijapur, but not at other locations. Increasing yield potential traits by 10% increased yields under both the climate situations in India and West Africa. Drought tolerance imparted the lowest yield gain at Aurangabad (6%), the highest at Sadore (30%) and intermediate at the other locations under current climate. Under climate change the contribution of drought tolerance to the yield of cultivars either increased or decreased depending upon changes in rainfall of the locations. Yield benefits of heat tolerance substantially increased under climate change at most locations, having the greatest effects at Bikaner (17%) in India and Sadore (13%) in West Africa. Aurangabad and Bijapur locations had no yield advantage from heat tolerance due to their low temperature regimes. Thus drought and heat tolerance in pearl millet increased yields under climate change in both the arid and semi-arid tropical climates with greater benefit in relatively hotter environments. This study will assists the plant breeders in evaluating new promising plant traits of pearl millet for adapting to climate change at the selected locations and other similar environments.
Piara Singh; K.J. Boote; M.D.M. Kadiyala; Swamikannu Nedumaran; S.K. Gupta; K. Srinivas; M.C.S. Bantilan. An assessment of yield gains under climate change due to genetic modification of pearl millet. Science of The Total Environment 2017, 601-602, 1226 -1237.
AMA StylePiara Singh, K.J. Boote, M.D.M. Kadiyala, Swamikannu Nedumaran, S.K. Gupta, K. Srinivas, M.C.S. Bantilan. An assessment of yield gains under climate change due to genetic modification of pearl millet. Science of The Total Environment. 2017; 601-602 ():1226-1237.
Chicago/Turabian StylePiara Singh; K.J. Boote; M.D.M. Kadiyala; Swamikannu Nedumaran; S.K. Gupta; K. Srinivas; M.C.S. Bantilan. 2017. "An assessment of yield gains under climate change due to genetic modification of pearl millet." Science of The Total Environment 601-602, no. : 1226-1237.
This paper has examined the trade-off between non-farm income and on-farm soil and water conservation (SWC) investment by smallholder farmers in the semi-arid tropics (SAT) of India. A dynamic bio-economic simulation model has been used to assess the impact of improved off-farm employment opportunities on household welfare, land degradation and labour allocation for SWC activities. The simulation results has revealed that improved non-farm employment opportunities increase the household welfare but reduce the households’ incentives to deploy labour for soil and water conservation measures, leading to higher levels of soil erosion and rapid land degradation. The study has suggested that there is the need of other complementary policy interventions to protect the natural resource base because improvement in non farm income opportunities does not produce a win-win solution in the watershed in the SAT region. Top
S. Nedumaran; Naveen P. Singh. Trade-offs between non-farm income and on-farm soil and water conservation investments of smallholder farmers in the semi-arid tropics of India. Agricultural Economics Research Review 2017, 30, 47 .
AMA StyleS. Nedumaran, Naveen P. Singh. Trade-offs between non-farm income and on-farm soil and water conservation investments of smallholder farmers in the semi-arid tropics of India. Agricultural Economics Research Review. 2017; 30 (1):47.
Chicago/Turabian StyleS. Nedumaran; Naveen P. Singh. 2017. "Trade-offs between non-farm income and on-farm soil and water conservation investments of smallholder farmers in the semi-arid tropics of India." Agricultural Economics Research Review 30, no. 1: 47.
Achieving and maintaining global food security is challenged by changes in population, income, and climate, among other drivers. Assessing these threats and weighing possible solutions requires a robust multidisciplinary approach. One such approach integrates biophysical modeling with economic modeling to explore the combined effects of climate stresses and future socioeconomic trends, thus providing a more accurate picture of how agriculture and the food system may be affected in the coming decades. We review and analyze the literature on this structural approach and present a case study that follows this methodology, explicitly modeling drought and heat tolerant crop varieties. We show that yield gains from adoption of these varieties differ by technology and region, but are generally comparable in scale to (and thus able to offset) adverse effects of climate change. However, yield increases over the projection period are dominated by the effects of growth in population, income, and general productivity, highlighting the importance of joint assessment of biophysical and socioeconomic drivers to better understand climate impacts and responses
Shahnila Islam; Nicola Cenacchi; Timothy B. Sulser; Sika Gbegbelegbe; Guy Hareau; Ulrich Kleinwechter; Daniel Mason-D'Croz; Swamikannu Nedumaran; Richard Robertson; Sherman Robinson; Keith Wiebe. Structural approaches to modeling the impact of climate change and adaptation technologies on crop yields and food security. Global Food Security 2016, 10, 63 -70.
AMA StyleShahnila Islam, Nicola Cenacchi, Timothy B. Sulser, Sika Gbegbelegbe, Guy Hareau, Ulrich Kleinwechter, Daniel Mason-D'Croz, Swamikannu Nedumaran, Richard Robertson, Sherman Robinson, Keith Wiebe. Structural approaches to modeling the impact of climate change and adaptation technologies on crop yields and food security. Global Food Security. 2016; 10 ():63-70.
Chicago/Turabian StyleShahnila Islam; Nicola Cenacchi; Timothy B. Sulser; Sika Gbegbelegbe; Guy Hareau; Ulrich Kleinwechter; Daniel Mason-D'Croz; Swamikannu Nedumaran; Richard Robertson; Sherman Robinson; Keith Wiebe. 2016. "Structural approaches to modeling the impact of climate change and adaptation technologies on crop yields and food security." Global Food Security 10, no. : 63-70.
The semi-arid tropical (SAT) regions of India are suffering from low productivity which may be further aggravated by anticipated climate change. The present study analyzes the spatial variability of climate change impacts on groundnut yields in the Anantapur district of India and examines the relative contribution of adaptation strategies. For this purpose, a web based decision support tool that integrates crop simulation model and Geographical Information System (GIS) was developed to assist agronomic decision making and this tool can be scalable to any location and crop. The climate change projections of five global climate models (GCMs) relative to the 1980-2010 baseline for Anantapur district indicates an increase in rainfall activity to the tune of 10.6 to 25% during Mid-century period (2040-69) with RCP 8.5. The GCMs also predict warming exceeding 1.4 to 2.4°C by 2069 in the study region. The spatial crop responses to the projected climate indicate a decrease in groundnut yields with four GCMs (MPI-ESM-MR, MIROC5, CCSM4 and HadGEM2-ES) and a contrasting 6.3% increase with the GCM, GFDL-ESM2M. The simulation studies using CROPGRO-Peanut model reveals that groundnut yields can be increased on average by 1.0%, 5.0%, 14.4%, and 20.2%, by adopting adaptation options of heat tolerance, drought tolerant cultivars, supplemental irrigation and a combination of drought tolerance cultivar and supplemental irrigation respectively. The spatial patterns of relative benefits of adaptation options were geographically different and the greatest benefits can be achieved by adopting new cultivars having drought tolerance and with the application of one supplemental irrigation at 60days after sowing.
M.D.M. Kadiyala; Swamikannu Nedumaran; Piara Singh; Chukka S.; Mohammad A. Irshad; M.C.S. Bantilan. An integrated crop model and GIS decision support system for assisting agronomic decision making under climate change. Science of The Total Environment 2015, 521-522, 123 -134.
AMA StyleM.D.M. Kadiyala, Swamikannu Nedumaran, Piara Singh, Chukka S., Mohammad A. Irshad, M.C.S. Bantilan. An integrated crop model and GIS decision support system for assisting agronomic decision making under climate change. Science of The Total Environment. 2015; 521-522 ():123-134.
Chicago/Turabian StyleM.D.M. Kadiyala; Swamikannu Nedumaran; Piara Singh; Chukka S.; Mohammad A. Irshad; M.C.S. Bantilan. 2015. "An integrated crop model and GIS decision support system for assisting agronomic decision making under climate change." Science of The Total Environment 521-522, no. : 123-134.
Sonali P. McDermid; Guntuku Dileepkumar; K. M. Dakshina Murthy; Swamikannu Nedumaran; Piara Singh; Chukka Srinivasa; B. Gangwar; N. Subash; Ashfaq Ahmad; Lareef Zubair; S. P. Nissanka; Cynthia Rosenzweig; Daniel Hillel. Integrated Assessments of the Impact of Climate Change on Agriculture: An Overview of AgMIP Regional Research in South Asia. Handbook of Climate Change and Agroecosystems 2015, 4, 201 -217.
AMA StyleSonali P. McDermid, Guntuku Dileepkumar, K. M. Dakshina Murthy, Swamikannu Nedumaran, Piara Singh, Chukka Srinivasa, B. Gangwar, N. Subash, Ashfaq Ahmad, Lareef Zubair, S. P. Nissanka, Cynthia Rosenzweig, Daniel Hillel. Integrated Assessments of the Impact of Climate Change on Agriculture: An Overview of AgMIP Regional Research in South Asia. Handbook of Climate Change and Agroecosystems. 2015; 4 ():201-217.
Chicago/Turabian StyleSonali P. McDermid; Guntuku Dileepkumar; K. M. Dakshina Murthy; Swamikannu Nedumaran; Piara Singh; Chukka Srinivasa; B. Gangwar; N. Subash; Ashfaq Ahmad; Lareef Zubair; S. P. Nissanka; Cynthia Rosenzweig; Daniel Hillel. 2015. "Integrated Assessments of the Impact of Climate Change on Agriculture: An Overview of AgMIP Regional Research in South Asia." Handbook of Climate Change and Agroecosystems 4, no. : 201-217.
An integrated modeling framework – IMPACT – which integrates partial equilibrium economic model, hydrology model, crop simulation model and climate model was used to examine the ex-ante economic impact of developing and disseminating a drought tolerant sorghum cultivar in target countries of Africa and Asia. The impact of drought tolerant sorghum technology on production, consumption, trade flow and prices of sorghum in target and non-target countries were analyzed. And also we estimated the returns to research investment for developing the promising new drought tolerant cultivars and dissemination in the target countries. The analysis indicates that the economic benefits of drought tolerant sorghum cultivar adoption in the target countries outweighs the cost of developing this new technology. The development and release of this new technology in the target countries of Asia and Africa would provide a net economic benefit of about 1,476.8 million US$ for the entire world under no climate change condition. Under climate change scenarios the net benefits derived from adoption of new drought tolerant sorghum cultivar is higher than the no climate change condition. This is due to higher production realized by sorghum under climate change scenarios. The results imply that substantial economic benefits can be achieved from the development of a drought tolerant sorghum cultivar. And also this technology will perform better than the existing cultivars in future climate change condition.
Swamikannu Nedumaran; Cynthia Bantilan; P. Abinaya; Daniel Mason-D'Croz; A. Ashok Kumar. Ex-ante Impact Assessment of ‘Stay-Green’ Drought Tolerant Sorghum Cultivar Under Future Climate Scenarios: Integrated Modeling Approach. Vulnerability of Agriculture, Water and Fisheries to Climate Change 2014, 167 -190.
AMA StyleSwamikannu Nedumaran, Cynthia Bantilan, P. Abinaya, Daniel Mason-D'Croz, A. Ashok Kumar. Ex-ante Impact Assessment of ‘Stay-Green’ Drought Tolerant Sorghum Cultivar Under Future Climate Scenarios: Integrated Modeling Approach. Vulnerability of Agriculture, Water and Fisheries to Climate Change. 2014; ():167-190.
Chicago/Turabian StyleSwamikannu Nedumaran; Cynthia Bantilan; P. Abinaya; Daniel Mason-D'Croz; A. Ashok Kumar. 2014. "Ex-ante Impact Assessment of ‘Stay-Green’ Drought Tolerant Sorghum Cultivar Under Future Climate Scenarios: Integrated Modeling Approach." Vulnerability of Agriculture, Water and Fisheries to Climate Change , no. : 167-190.
Maintaining high levels of productivity under climate change will require developing cultivars that are able to perform under varying drought and heat stresses and with maturities that match water availability. The CSM-CERES-Sorghum model was used to quantify the potential benefits of altering crop life cycle, enhancing yield potential traits, and incorporating drought and heat tolerance in the commonly grown cultivar types at two sites each in India (cv. CSV 15 at both Akola and Indore) and Mali (cv. CSM 335 at Samanko and cv. CSM 63E at Cinzana), West Africa. Under current climate CSV 15 on average matured in 108 days and produced 3790 kg ha−1 grain yield at Akola; whereas at Indore it matured in 115 days and produced 3540 kg ha−1 grain yield. Similarly under current climate, CSM 335 matured in 120 days and produced 2700 kg ha−1 grain yield at Samanko; whereas CSM 63E matured in 85 days at Cinzana and produced 2210 kg ha−1 grain yield. Decreasing crop life cycle duration of cultivars by 10% decreased yields at all the sites under both current and future climates. In contrast, increasing crop life cycle by 10% increased yields up to 12% at Akola, 9% at Indore, 8% at Samanko and 33% at Cinzana. Enhancing yield potential traits (radiation use efficiency, relative leaf size and partitioning of assimilates to the panicle each increased by 10%) in the longer cycle cultivars increased the yields by 11–18% at Akola, 17–19% at Indore, 10–12% at Samanko and 14–25% at Cinzana under current and future climates of the sites. Except for the Samanko site, yield gains were larger by incorporating drought tolerance than heat tolerance under the current climate. However, under future climates yield gains were higher by incorporating heat tolerance at Akola, Samanko and Cinzana, but not at Indore. Net benefits of incorporating both drought and heat tolerance increased yield up to 17% at Akola, 9% at Indore, 7% at Samanko and 16% at Cinzana under climate change. It is concluded that different combinations of traits will be needed to increase and sustain productivity of sorghum in current and future climates at these target sites and that the CSM-CERES-Sorghum model can be used to quantify benefits of incorporating certain traits.
Piara Singh; Swamikannu Nedumaran; Pierre C. Sibiry Traore; Kenneth Boote; H.F.W. Rattunde; P.V. Vara Prasad; N.P. Singh; K. Srinivas; M.C.S. Bantilan. Quantifying potential benefits of drought and heat tolerance in rainy season sorghum for adapting to climate change. Agricultural and Forest Meteorology 2013, 185, 37 -48.
AMA StylePiara Singh, Swamikannu Nedumaran, Pierre C. Sibiry Traore, Kenneth Boote, H.F.W. Rattunde, P.V. Vara Prasad, N.P. Singh, K. Srinivas, M.C.S. Bantilan. Quantifying potential benefits of drought and heat tolerance in rainy season sorghum for adapting to climate change. Agricultural and Forest Meteorology. 2013; 185 ():37-48.
Chicago/Turabian StylePiara Singh; Swamikannu Nedumaran; Pierre C. Sibiry Traore; Kenneth Boote; H.F.W. Rattunde; P.V. Vara Prasad; N.P. Singh; K. Srinivas; M.C.S. Bantilan. 2013. "Quantifying potential benefits of drought and heat tolerance in rainy season sorghum for adapting to climate change." Agricultural and Forest Meteorology 185, no. : 37-48.
Using CROPGRO-Chickpea model (revised version), we investigated the impacts of climate change on the productivity of chickpea (Cicer arietinum L.) at selected sites in South Asia (Hisar, Indore and Nandhyal in India and Zaloke in Myanmar) and East Africa (Debre Zeit in Ethiopia, Kabete in Kenya and Ukiriguru in Tanzania). We also investigated the potential benefits of incorporating drought and heat tolerance traits in chickpea using the chickpea model and the virtual cultivars approach. As compared to the baseline climate, the climate change by 2050 (including CO2) increased the yield of chickpea by 17% both at Hisar and Indore, 18% at Zaloke, 25% at Debre Zeit and 18% at Kabete; whereas the yields decreased by 16% at Nandhyal and 7% at Ukiriguru. The yield benefit due to increased CO2 by 2050 ranged from 7 to 20% across sites as compared to the yields under current atmospheric CO2 concentration; while the changes in temperature and rainfall had either positive or negative impact on yield at the sites. Yield potential traits (maximum leaf photosynthesis rate, partitioning of daily growth to pods and seed-filling duration each increased by 10%) increased the yield of virtual cultivars up to 12%. Yield benefit due to drought tolerance across sites was up to 22% under both baseline and climate change scenarios. Heat tolerance increased the yield of chickpea up to 9% at Hisar and Indore under baseline climate, and up to 13% at Hisar, Indore, Nandhyal and Ukiriguru under climate change. At other sites (Zaloke, Debre Zeit and Kabete) the incorporation of heat tolerance under climate change had no beneficial effect on yield. Considering varied crop responses to each plant trait across sites, this study was useful in prioritizing the plant traits for location-specific breeding of chickpea cultivars for higher yields under climate change at the selected sites in South Asia and East Africa.
Piara Singh; Swamikannu Nedumaran; Kenneth Boote; P.M. Gaur; K. Srinivas; M.C.S. Bantilan. Climate change impacts and potential benefits of drought and heat tolerance in chickpea in South Asia and East Africa. European Journal of Agronomy 2013, 52, 123 -137.
AMA StylePiara Singh, Swamikannu Nedumaran, Kenneth Boote, P.M. Gaur, K. Srinivas, M.C.S. Bantilan. Climate change impacts and potential benefits of drought and heat tolerance in chickpea in South Asia and East Africa. European Journal of Agronomy. 2013; 52 ():123-137.
Chicago/Turabian StylePiara Singh; Swamikannu Nedumaran; Kenneth Boote; P.M. Gaur; K. Srinivas; M.C.S. Bantilan. 2013. "Climate change impacts and potential benefits of drought and heat tolerance in chickpea in South Asia and East Africa." European Journal of Agronomy 52, no. : 123-137.
The increasing population and urbanization have serious implications for sustainable development in less-favoured areas of developing countries. In an attempt to sustain the long-term productivity of natural resources and to meet the food and non-food demands of growing population in the semi-arid tropics, the Indian government invests and promotes integrated watershed development programs. A comprehensive tool to assess the impacts of watershed development programs on both social well-being and sustainability of natural resource is currently lacking. In this study, we develop a watershed level bioeconomic model to assess the ex-ante impacts of key technological and policy interventions on the socioeconomic well-being of rural households and the natural resource base. These interventions are simulated using data from a watershed community in the semi-arid tropics of India. The model captures the interaction between economic decisions and biophysical processes and using a constrained optimization of household decision model. The interventions assessed are productivity-enhancing technologies of dryland crops and increased in irrigable area through water conservation technologies. The results show that productivity-enhancing technologies of dryland crops increase household incomes and also provided incentives for conserving soil moisture and fertility. The increase in irrigable area enables cultivation of high-value crops which increase the household income but also lead to an increase in soil erosion and nutrient mining. The results clearly indicate the necessity for prioritizing and sequencing technologies based on potential effects and trade-offs on household income and conservation of natural resources.
S. Nedumaran; Beleke Shiferaw; M. C. S. Bantilan; K. Palanisami; Suhas P. Wani. Bioeconomic modeling of farm household decisions for ex-ante impact assessment of integrated watershed development programs in semi-arid India. Environment, Development and Sustainability 2013, 16, 257 -286.
AMA StyleS. Nedumaran, Beleke Shiferaw, M. C. S. Bantilan, K. Palanisami, Suhas P. Wani. Bioeconomic modeling of farm household decisions for ex-ante impact assessment of integrated watershed development programs in semi-arid India. Environment, Development and Sustainability. 2013; 16 (2):257-286.
Chicago/Turabian StyleS. Nedumaran; Beleke Shiferaw; M. C. S. Bantilan; K. Palanisami; Suhas P. Wani. 2013. "Bioeconomic modeling of farm household decisions for ex-ante impact assessment of integrated watershed development programs in semi-arid India." Environment, Development and Sustainability 16, no. 2: 257-286.