Irrigated agriculture plays a central role in global food production as it provides resilience to rainfall variability, increased productivity and production security. However, it has also gone hand in hand with serious socio-environmental challenges. Large-scale irrigated agricultural production, which depends on both surface and groundwater resources, has encountered several technical and managerial challenges. It has led to widespread environmental deterioration through drying and polluting rivers, lakes, wetlands, and aquifers. At the same time, irrigated agricultural production has been increasingly commodified, specialized and globalized through large commercial farming enterprises, contract farming and international agro-export chains. This has led to widespread processes of land and water accumulation and related socio-environmental inequities in many regions of the world. In contraposition to this tendency peasant irrigated production plays a key role in producing for local and regional fresh food markets. In this context, we explore a few innovative and promising grassroots initiatives that spring from peasant agriculture. These are agro-ecology, farmer-led irrigation development and peri-urban agriculture, all initiatives that rest on the creation of local food production and marketing networks. Finally, this book chapter closes by setting out critical questions about policies and the political implications of food consumption patterns.

Access to sufficient and clean freshwater is essential for all life. Water is also essential for the functioning of food systems: as a key input into food production, but also in processing and preparation, and as a food itself. Water scarcity and pollution are growing, affecting poorer populations most, and particularly food producers. Malnutrition levels are also on the rise, and this is closely linked to water scarcity. The achievement of Sustainable Development Goals (SDG) 2 and 6 are co-dependent. Solutions for jointly improving food systems and water security outcomes include: (1) strengthening efforts to retain water-based ecosystems and their functions; (2) improving agricultural water management for better diets for all; (3) reducing water and food losses beyond the farmgate; (4) coordinating water with nutrition and health interventions; (5) increasing the environmental sustainability of food systems; (6) explicitly addressing social inequities in water-nutrition linkages; and (7) improving data quality and monitoring for water-food system linkages, drawing on innovations in information and communications technology (ICT). Climate change and other environmental and societal changes make the implementation and scaling of solutions more urgent than ever.

Access to sufficient and clean freshwater is essential for all life. Water is also essential for the functioning of food systems: as a key input into food production, but also in processing and preparation, and as a food itself. Water scarcity and pollution are growing, affecting poorer populations most, and particularly food producers. Malnutrition levels are also on the rise, and this is closely linked to water scarcity. The achievement of Sustainable Development Goals (SDG) 2 and 6 are co-dependent. Solutions for jointly improving food systems and water security outcomes include: (1) strengthening efforts to retain water-based ecosystems and their functions; (2) improving agricultural water management for better diets for all; (3) reducing water and food losses beyond the farmgate; (4) coordinating water with nutrition and health interventions; (5) increasing the environmental sustainability of food systems; (6) explicitly addressing social inequities in water-nutrition linkages; and (7) improving data quality and monitoring for water-food system linkages, drawing on innovations in information and communications technology (ICT). Climate change and other environmental and societal changes make the implementation and scaling of solutions more urgent than ever. | Non-PR | 1 Fostering Climate-Resilient and Sustainable Food Supply; IFPRI4; DCA | Natural Resources and Resilience (NRR); Transformation Strategies

This database provides information about the amount of water use in agriculture food systems covering all sectors from farming to food processing industries. The data are presented at the country level with sectoral disaggregation following the Nexus Social Accounting Matrix (SAM) sectoral specifications. The database also differentiates the type of water in each sector based on water sources. The green water refers to type of water originated from precipitation or rain, while the blue water refers to all water that comes from irrigation covering both surface and groundwater. Both types of water are consumed by plants or animals during the production process. The grey water on the other hand is the amount of water generated as an implication from production activities that cause the water polluted. Since it has loads of pollutants created from production activities, this type of water can be seen as a waste in the whole production system.

In the goals of the United Nations for the sustainable development of societies in the third millennium, the approach of water and food nexus is considered one of the important interdisciplinary perspectives in the direction of the dynamic balance of production and consumption of resources. Due to the consumption of more than 90% of the country's water resources in the agricultural sector, access to accurate statistics of this field is vitally important in creating a balance between water production and consumption in the water-food nexus approach. In such a way, the presentation of incorrect statistics or statistics with many errors, especially by official authorities, by entering into different models developed by researchers, will lead to distorted results, wrong decisions and ultimately economic and environmental damages and social tensions. In this research, with the approach of using the connections of ecosystems, water-food nexus was investigated; Thus, the correlation between the presented statistics of the production sector and the water consumption sector was analyzed by using water-food nexus with the method of uncomplicated calculations. Based on the information, the inconsisitency of the statistics provided by different departments is evident. According to the statistics of crop production in 2014-2015 and 2019-2020, the undercultivated area in the agricultural sector in 2019-2020 has grown by about 1% compared to 2014-2015, and in 13 provinces the undercultivated area has increased and in other provinces the undercultivated area in the agricultural sector has decreased. Water consumption in the agricultural sector has grown by about 10%, so that in 23 provinces, water consumption in the agricultural sector has increased and in 8 provinces, water consumption in the agricultural sector has decreased. This difference is due to the change in the cultivation pattern and the crop selected by farmers in the country. Also, according to the amount of programmable water that has been announced by the Ministry of Energy, in 12 provinces, the amount of programmable water is not enough to meet the Pure water consumption for crops, and even in some provinces, the amount of programmable water is only enough to supply garden products. This important and basic finding implies and emphasizes the need to solve the problems of statistics of different authorities of the country.

One of the needs of a sustainable decision-making system in agriculture is to determine the role of energy in the food production cycle. Wind energy turbines can be built in agricultural fields for groundwater exploitation and reduce the cost of energy supply for the pumping system. This study was conducted to evaluate the effect of wind energy and economics on sustainable planning of agricultural water resources. A multiobjective framework was developed based on the nondominated sorting principle and water cycle optimizer. Maximization of benefit per cost ratio for the total cropping pattern and minimization of energy consumption for the growing season were addressed as the objectives of the nonlinear problem. The prediction of biomass production was made by simulating a hybrid structure between the soil moisture balance in the root zone area and the development of the canopy cover of each crop. The results showed that the objectives of the problem have been met by irrigation planning using climatic constraints and drought stresses. About 35% of the total water requirement of plants with a higher harvest index (watermelon, melon, etc.) is in the maturing stage of the shade cover. HIGHLIGHTS The role of wind energy variables has been considered in the agricultural yield production.; A multiobjective framework was developed based on the nondominated sorting principle and water cycle optimizer.; The proposed optimization method showed that the total water productivity increased significantly by 38%.;

Metodologia Quantitativa para Análise do Nexo Água-Energia-Alimento em Bacias Hidrográficas sob Cenários Históricos e Futuros     TAMIRES LIMA DA SILVA1; RODRIGO MÁXIMO SÁNCHEZ ROMÁN2;  HESSAM S. SARJOUGHIAN3 E MOSTAFA D. FARD4   1 Engenharia rural e socioeconomia, Universidade Estadual Paulista (Unesp), Faculdade de Ciências Agronômicas, Botucatu, Av. Universitária, 3780, Altos do Paraíso, 18610-034, Botucatu, SP, Brasil, tamireslsilva@gmail.com 2 Engenharia rural e socioeconomia, Universidade Estadual Paulista (Unesp), Faculdade de Ciências Agronômicas, Botucatu, Av. Universitária, 3780, Altos do Paraíso, 18610-034, Botucatu, SP, Brasil, rodrigo.roman@unesp.br 3 Ira A. Fulton Schools of Engineering, School of Computing and Augmented Intelligence, Arizona State University (ASU), S Mill Avenue, 699, 85287-8809, Tempe, AZ, Estados Unidos da América, hessam.Sarjoughian@asu.edu 4 Ira A. Fulton Schools of Engineering, School of Computing and Augmented Intelligence, Arizona State University (ASU), S Mill Avenue, 699, 85287-8809, Tempe, AZ, Estados Unidos da América, sderakhs@asu.edu     1 RESUMO   O uso integrado de recursos hídricos, energéticos e alimentares é essencial para a gestão sustentável de bacias hidrográficas. Este estudo desenvolveu uma metodologia quantitativa para modelar o nexo água-energia-alimento (AEA) em bacias hidrográficas, considerando tanto condições históricas quanto projeções futuras. A metodologia proposta utiliza modelos criados nos programas “Water Evaluation and Planning” System (WEAP) e “Low Emissions Analysis Platform” (LEAP), os quais foram acoplados para troca de dados por meio do WEAP-KIB-LEAP framework. Para exemplificar o uso da metodologia, foi realizada uma aplicação nas bacias hidrográficas dos rios Piracicaba, Capivari e Jundiaí (PCJ). Os resultados demonstraram que a ferramenta permite a simulação do nexo AEA, oferecendo suporte valioso para o planejamento sustentável dos recursos presentes nas bacias PCJ, podendo contribuir com o alcance dos Objetivos de Desenvolvimento Sustentável (ODS). Recomenda-se a aplicação do framework em diferentes contextos regionais para ampliar sua validação e aplicabilidade.   Palavras-chave: WEAP, LEAP, WEAP-KIB-LEAP framework, nexo AEA.     SILVA, T. L.; SÁNCHEZ-ROMÁN, R. M.; SARJOUGHIAN, H. S.; FARD, M. D. QUANTITATIVE METHODOLOGY FOR ANALYZING THE WATER-ENERGY-FOOD NEXUS IN RIVER BASINS UNDER HISTORICAL AND FUTURE SCENARIOS     2 ABSTRACT   The integrated use of water, energy, and food resources is essential for the sustainable management of river basins. This study developed a quantitative methodology to model the water‒energy‒food (WEF) nexus in river basins, considering both historical conditions and future projections. The proposed methodology uses models created in the “Water Evaluation and Planning” System (WEAP) and “Low Emissions Analysis Platform” (LEAP) programs, which were coupled for data exchange through the WEAP-KIB-LEAP framework. To exemplify the use of the methodology, an application was carried out in the Piracicaba, Capivarí and Jundiaí (PCJ) river basins. The results showed that the tool allows the WEF nexus to be simulated, offering valuable support for the sustainable planning of the resources present in the PCJ basins, and can contribute to achieving the Sustainable Development Goals (SDGs). It is recommended that the framework be applied in different regional contexts to expand its validation and applicability.   Keywords: WEAP, LEAP, WEAP-KIB-LEAP framework, WEF nexus. | Metodologia Quantitativa para Análise do Nexo Água-Energia-Alimento em Bacias Hidrográficas sob Cenários Históricos e Futuros     TAMIRES LIMA DA SILVA1; RODRIGO MÁXIMO SÁNCHEZ ROMÁN2;  HESSAM S. SARJOUGHIAN3 E MOSTAFA D. FARD4   1 Engenharia rural e socioeconomia, Universidade Estadual Paulista (Unesp), Faculdade de Ciências Agronômicas, Botucatu, Av. Universitária, 3780, Altos do Paraíso, 18610-034, Botucatu, SP, Brasil, tamireslsilva@gmail.com 2 Engenharia rural e socioeconomia, Universidade Estadual Paulista (Unesp), Faculdade de Ciências Agronômicas, Botucatu, Av. Universitária, 3780, Altos do Paraíso, 18610-034, Botucatu, SP, Brasil, rodrigo.roman@unesp.br 3 Ira A. Fulton Schools of Engineering, School of Computing and Augmented Intelligence, Arizona State University (ASU), S Mill Avenue, 699, 85287-8809, Tempe, AZ, Estados Unidos da América, hessam.Sarjoughian@asu.edu 4 Ira A. Fulton Schools of Engineering, School of Computing and Augmented Intelligence, Arizona State University (ASU), S Mill Avenue, 699, 85287-8809, Tempe, AZ, Estados Unidos da América, sderakhs@asu.edu     1 RESUMO   O uso integrado de recursos hídricos, energéticos e alimentares é essencial para a gestão sustentável de bacias hidrográficas. Este estudo desenvolveu uma metodologia quantitativa para modelar o nexo água-energia-alimento (AEA) em bacias hidrográficas, considerando tanto condições históricas quanto projeções futuras. A metodologia proposta utiliza modelos criados nos programas “Water Evaluation and Planning” System (WEAP) e “Low Emissions Analysis Platform” (LEAP), os quais foram acoplados para troca de dados por meio do WEAP-KIB-LEAP framework. Para exemplificar o uso da metodologia, foi realizada uma aplicação nas bacias hidrográficas dos rios Piracicaba, Capivari e Jundiaí (PCJ). Os resultados demonstraram que a ferramenta permite a simulação do nexo AEA, oferecendo suporte valioso para o planejamento sustentável dos recursos presentes nas bacias PCJ, podendo contribuir com o alcance dos Objetivos de Desenvolvimento Sustentável (ODS). Recomenda-se a aplicação do framework em diferentes contextos regionais para ampliar sua validação e aplicabilidade.   Palavras-chave: WEAP, LEAP, WEAP-KIB-LEAP framework, nexo AEA.     SILVA, T. L.; SÁNCHEZ-ROMÁN, R. M.; SARJOUGHIAN, H. S.; FARD, M. D. QUANTITATIVE METHODOLOGY FOR ANALYZING THE WATER-ENERGY-FOOD NEXUS IN RIVER BASINS UNDER HISTORICAL AND FUTURE SCENARIOS     2 ABSTRACT   The integrated use of water, energy, and food resources is essential for the sustainable management of river basins. This study developed a quantitative methodology to model the water‒energy‒food (WEF) nexus in river basins, considering both historical conditions and future projections. The proposed methodology uses models created in the “Water Evaluation and Planning” System (WEAP) and “Low Emissions Analysis Platform” (LEAP) programs, which were coupled for data exchange through the WEAP-KIB-LEAP framework. To exemplify the use of the methodology, an application was carried out in the Piracicaba, Capivarí and Jundiaí (PCJ) river basins. The results showed that the tool allows the WEF nexus to be simulated, offering valuable support for the sustainable planning of the resources present in the PCJ basins, and can contribute to achieving the Sustainable Development Goals (SDGs). It is recommended that the framework be applied in different regional contexts to expand its validation and applicability.   Keywords: WEAP, LEAP, WEAP-KIB-LEAP framework, WEF nexus.

Cambodia has abundant water resources in general, but it has a little water in the dry season. The increased dry season rice farming in many provinces, following the increased rice export policy in Cambodia and the spill-over effects of rice trade in Vietnam has led to high demands for water for dry season rice farming. These have led to water shortage and conflicts over water among farmers in the farming provinces, and between sectors, for instance, fishery and rice farming. Irrigation system development and improvement have improved water management and support to agricultural development. Rice farming areas have been expanded to around 2 million ha and rice farming has been increased from one rice crop to three rice crops a year. These have increased the high demand of waters for rice farming

Cambodia has abundant water resources in general, but it has a little water in the dry season. The increased dry season rice farming in many provinces, following the increased rice export policy in Cambodia and the spill-over effects of rice trade in Vietnam has led to high demands for water for dry season rice farming. These have led to water shortage and conflicts over water among farmers in the farming provinces, and between sectors, for instance, fishery and rice farming. Irrigation system development and improvement have improved water management and support to agricultural development. Rice farming areas have been expanded to around 2 million ha and rice farming has been increased from one rice crop to three rice crops a year. These have increased the high demand of waters for rice farming