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The AquaCrop model – Enhancing crop water productivity

Author: Salman, M., García-Vila, M., Fereres, E., Raes, D., Steduto, P.

Publisher: Food & Agriculture Org.

Published: 2021-11-16

Total Pages: 106

ISBN-13: 9251352224

Water resources are linked to the global challenges of food insecurity and poverty, as well as to climate change adaptation and mitigation. In line with the Sustainable Development Goals (SGD), FAO works towards several dimensions of sustainable development, including the promotion of coherent approaches to efficient, productive and sustainable water management, from farm to river basin scales. Accordingly, FAO is enhancing well-informed on-the-ground decision-making processes on water management through projects, knowledge advancement, information-sharing and tools development, such as AquaCrop, the FAO crop-water productivity model. This model assists in assessing the effects of environment (including atmospheric CO2 concentration) and management on crop production through the simulation of yield response to water of herbaceous crops. It is particularly suited to address conditions where water is a key limiting factor in crop production. In 2009, FAO officially launched AquaCrop, being the result of several years of collaborative work among scientists, water and crop specialists and practitioners worldwide, bringing together previously fragmented information on crop yields in response to water use and water deficit. AquaCrop has evolved over the different versions released since its first launch, but it always balances accuracy, simplicity and robustness. This has enabled it to remain faithful to its goal, i.e., to be a dynamic tool accessible to several types of users, mainly practitioner-type end users, in different disciplines and for a wide range of applications. In addition, AquaCrop may be considered a valuable tool by research scientists for analysis and conceptualization.

Author:

Publisher:

Published:

Total Pages:

ISBN-13: 1464812985

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Field guide to improve crop water productivity in small-scale agriculture

Author: Food and Agriculture Organization of the United Nations

Publisher: Food & Agriculture Org.

Published: 2020-04-01

Total Pages: 93

ISBN-13: 9251323623

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By 2050, the world’s population will reach 9.1 billion, which requires an increase of food production by 70 percent compared to 2005 (FAO,2018). Nearly all the increase will occur in developing countries, where agriculture plays a major role to provide employment, income and to improve food security. One of the major challenges of increasing food supply is the limited water resources. Agriculture, as the driver of freshwater exploitation has, therefore, to be transformed into more resource efficient production (FAO, 2003). The world’s limited freshwater resources are potentially threatened by the expansion of agriculture. Increasing the potential output per amount of water used is an appropriate practice to improve production efficiency while protecting water resources. Therefore, increasing the productivity of agricultural water use in a sustainable manner is essential to ultimately sustain the social and economic conditions of livelihoods. Crop water productivity has grown into one of the major approaches to cope with water scarcity and advance crop-water relation. The number of conceptual frameworks and implications is ample, but there is always a growing need to review the step-by-step approach beyond. In this Field guide, practical pathways are presented to provide a comprehensive approach for assessing and improving crop water productivity in small-scale agriculture. The Field guide draws lessons learned in three countries (Burkina Faso, Morocco and Uganda) within the framework of FAO project “Strengthening Agricultural Water Efficiency and Productivity at the African and Global Level” funded by Swiss Agency for Development and Cooperation (SDC).

9789290908487

Author: Giordano, Meredith

Publisher: Colombo, Sri Lanka: International Water Management Institute (IWMI) Washington, DC, USA: The World Bank

Published: 2017-06-01

Total Pages: 58

ISBN-13: 9290908483

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AquaCrop training handbooks

Author: Food and Agriculture Organization of the United Nations

Publisher: Food & Agriculture Org.

Published: 2018-06-25

Total Pages: 117

ISBN-13: 9251093911

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This handbook is a training tool to learn how to run AquaCrop. AquaCrop is a crop water productivity model developed by the Land and Water Division of FAO to address food security and to assess the effect of environment and management on crop production. AquaCrop simulates yield response to water of herbaceous crops, and is particularly suited to address conditions where water is a key limiting factor in crop production.

More Crop Per Drop

Author: Meredith Giordano

Publisher: IWA Publishing

Published: 2007-01-01

Total Pages: 289

ISBN-13: 1843391120

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This volume is an analytical summary and a critical synthesis of research at the International Water Management Institute over the past decade under its evolving research paradigm known popularly as 'more crop per drop'. The research synthesized here covers the full range of issues falling in the larger canvas of water-food-health-environment interface. Besides its immediate role in sharing knowledge with the research, donor, and policy communities, this volume also has a larger purpose of promoting a new way of looking at the water issues within the broader development context of food, livelihood, health and environmental challenges. More crop per drop: Revisiting a research paradigm contrasts the acquired wisdom and fresh thinking on some of the most challenging water issues of our times. It describes new tools, approaches, and methodologies and also illustrates them with practical application both from a global perspective and within the local and regional contexts of Asia and Africa. Since this volume brings together all major research works of IWMI, including an almost exhaustive list of citations, in one single set of pages, it is very valuable not only as a reference material for researchers and students but also as a policy tool for decision-makers and development agencies.

Water Productivity

Author: M. R. Et Al Umesh

Publisher: Daya Publishing House

Published: 2019

Total Pages: 368

ISBN-13: 9789388173766

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This book is a comprehensive knowledge source to the researchers, teaching faculty, students and other agriculture professionals. Not only importance of water is highlighted as a precious non-renewable natural resource but also the on-farm water management is equally emphasized considering the high water requiring crops as well as most efficient irrigation systems and practices with necessary work sheets. It is hoped that the book serves as a reference source for graduate and post graduate students and faculty in agricultural universities in India and abroad. This book is comprised of 32 chapters prepared on variety of topics by eminent personalities involved in agriculture research, education and extension. Previous exercises made in the country and elsewhere are briefed and new trends in water management are delineated in these chapters. Overall, the issues covered in the book are of practical and policy significance with detailed deliberations which often reappear because of their importance and diversity of experts.

Strategies for Improving Water Productivity and Quality of Agricultural Crops in an Era of Climate Change

Author: Zorica Jovanović

Publisher:

Published: 2012

Total Pages:

ISBN-13:

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Strategies for Improving Water Productivity and Quality of Agricultural Crops in an Era of Climate Change.

Crop Modeling and Decision Support

Author: Weixing Cao

Publisher: Springer Science & Business Media

Published: 2010-07-10

Total Pages: 333

ISBN-13: 3642011322

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"Crop Modeling and Decision Support" presents 36 papers selected from the International Symposium on Crop Modeling and Decision Support (ISCMDS-2008), held at Nanjing of China from 19th to 22nd in April, 2008. Many of these papers show the recent advances in modeling crop and soil processes, crop productivity, plant architecture and climate change; the rests describe the developments in model-based decision support systems (DSS), model applications, and integration of crop models with other information technologies. The book is intended for researchers, teachers, engineers, and graduate students on crop modeling and decision support. Dr. Weixing Cao is a professor at Nanjing Agricultural University, China.

Performance Analysis of AquaCrop and Hybrid-Maize Models in Estimating Crop Yield, Water Use and Plant Phenological and Physiological Variables

Author: Rupinder Sandhu

Publisher:

Published: 2019

Total Pages: 0

ISBN-13: 9781392764893

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The simulation of crop development and growth parameters by any crop model is based on complex interactions between climate, crop and soil parameters and management practices. Given this situation, there is need of crop models that are robust in performance, simple to use, requires smaller number of input parameters that are easily available, transparent in formulation and well supported with comprehensive documentation for end users. Such two crop models including AquaCrop and Hybrid Maize were selected in this study to assess their performance in predicting maize growth and yield parameters in Nebraska. In this dissertation, four chapters addressing the following objectives are presented:The first chapter aims to assess AquaCrop model performance relative to maize canopy cover, biomass, yield, soil water content, and crop evapotranspiration under rainfed conditions, full irrigation and limited irrigation (50, 60, and 75% of FIT) regimes. The model was calibrated and validated using long-term (2005-2010) field measured data and set of calibrated parameters were developed for Nebraskan conditions. The model efficacy was evaluated for both default and calibrated parameters.In second chapter, AquaCrop was tested for predicting maize canopy cover, available soil-water, grain yield, crop evapotranspiration, and water use efficiency when grown at three different planting dates and densities under rainfed and subsurface drip-irrigated conditions in Nebraska, USA. Detailed analyses of model performance, potential reasons for the discrepancies and areas of improvements were discussed.The third chapter evaluates Hybrid-Maize performance relative to simulation of maize growth, yield, and water use parameters under full (FIT), limited irrigation (50, 60, and 75% of FIT) and rainfed conditions over six years (2005-2010) in Nebraska. The differences between model simulated and field observed crop variables were assessed and additional improvements relative to simulation of soil water balance components were suggested.The fourth chapter aims to assess the impact of climate change on maize yield in Nebraska. The calibrated AquaCrop model was used to forecast long-term (2019-2090) yield and analyze the impact of climatic variations relative to the baseline period (1983-2018) on both yearly and decadal (2020s-2090s) basis under two emission scenarios of representative concentration pathways including RCP4.5 and RCP8.5.