Yield Gap Analysis Of Field Crops
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Author | : Food and Agriculture Organization of the United Nations |
Publisher | : Food & Agriculture Org. |
Total Pages | : 82 |
Release | : 2018-06-29 |
Genre | : Technology & Engineering |
ISBN | : 9251088136 |
Download Yield gap analysis of field crops Book in PDF, Epub and Kindle
To feed a world population that will exceed 9 billion by 2050 requires an estimated 60% increase over current primary agricultural productivity. Closing the common and often large gap between actual and attainable crop yield is critical to achieve this goal. To close yield gaps in both small and large scale cropping systems worldwide we need (1) definitions and techniques to measure and model yield at different levels (actual, attainable, potential) and different scales in space (field, farm, region, global) and time (short and long term); (2) identification of the causes of gaps between yield levels; (3) management options to reduce the gaps where feasible and (4) policies to favour adoption of sustainable gap-closing solutions. The aim of this publication is to critically review the methods for yield gap analysis, hence addressing primarily the first of these four requirements, reporting a wide-ranging and well-referenced analysis of literature on current methods to assess productivity of crops and cropping systems.
Author | : Jules N. Pretty |
Publisher | : Routledge |
Total Pages | : 292 |
Release | : 2012-06-25 |
Genre | : Nature |
ISBN | : 1136529276 |
Download Sustainable Intensification Book in PDF, Epub and Kindle
Continued population growth, rapidly changing consumption patterns and the impacts of climate change and environmental degradation are driving limited resources of food, energy, water and materials towards critical thresholds worldwide. These pressures are likely to be substantial across Africa, where countries will have to find innovative ways to boost crop and livestock production to avoid becoming more reliant on imports and food aid. Sustainable agricultural intensification - producing more output from the same area of land while reducing the negative environmental impacts - represents a solution for millions of African farmers. This volume presents the lessons learned from 40 sustainable agricultural intensification programmes in 20 countries across Africa, commissioned as part of the UK Government's Foresight project. Through detailed case studies, the authors of each chapter examine how to develop productive and sustainable agricultural systems and how to scale up these systems to reach many more millions of people in the future. Themes covered include crop improvements, agroforestry and soil conservation, conservation agriculture, integrated pest management, horticulture, livestock and fodder crops, aquaculture, and novel policies and partnerships.
Author | : |
Publisher | : IRRI |
Total Pages | : 245 |
Release | : 2001 |
Genre | : Rice |
ISBN | : 9712201716 |
Download ORYZA2000 Book in PDF, Epub and Kindle
Author | : Mark W. Rosegrant |
Publisher | : Intl Food Policy Res Inst |
Total Pages | : 36 |
Release | : 2002-01-01 |
Genre | : Business & Economics |
ISBN | : 0896296466 |
Download World Water and Food to 2025 Book in PDF, Epub and Kindle
A thirsty world; Alternative futures for water; Consequences of key policy changes; Implications for the future.
Author | : Gerald C. Nelson, Mark W. Rosegrant, Amanda Palazzo, Ian Gray, Christina Ingersoll, Richard Robertson, Simla Tokgoz, Tingju Zhu, Timothy B. Sulser, Claudia Ringler, Siwa Msangi, and Liangzhi You |
Publisher | : Intl Food Policy Res Inst |
Total Pages | : 155 |
Release | : 2010-01-01 |
Genre | : Social Science |
ISBN | : 0896291863 |
Download Food Security, Farming, and Climate Change to 2050 Book in PDF, Epub and Kindle
As the global population grows and incomes in poor countries rise, so too, will the demand for food, placing additional pressure on sustainable food production. Climate change adds a further challenge, as changes in temperature and precipitation threaten agricultural productivity and the capacity to feed the world's population. This study assesses how serious the danger to food security might be and suggests some steps policymakers can take to remedy the situation.Using various modeling techniques, the authors project 15 different future scenarios for food security through 2050. Each scenario involves an alternative combination of potential population and income growth and climate change. The authors also examine the specific test case of a hypothetical extended drought in South Asia, to demonstrate the possible effects of increased climate variability on a particular world region. They conclude that the negative effects of climate change on food security can be counteracted by broad-based economic growthparticularly improved agricultural productivityand robust international trade in agricultural products to offset regional shortages. In pursuit of these goals, policymakers should increase public investment in land, water, and nutrient use and maintain relatively free international trade. This inquiry into the future of food security should be of use to policymakers and others concerned with the impact of climate change on international development.
Author | : Pedro A. Sanchez |
Publisher | : Cambridge University Press |
Total Pages | : 685 |
Release | : 2019-01-10 |
Genre | : Business & Economics |
ISBN | : 1107176050 |
Download Properties and Management of Soils in the Tropics Book in PDF, Epub and Kindle
Long-awaited second edition of classic textbook, brought completely up to date, for courses on tropical soils, and reference for scientists and professionals.
Author | : Jelle Bruinsma |
Publisher | : Earthscan |
Total Pages | : 448 |
Release | : 2003 |
Genre | : Agricultural estimating and reporting |
ISBN | : 1844070077 |
Download World Agriculture Book in PDF, Epub and Kindle
First Published in 2003. Routledge is an imprint of Taylor & Francis, an informa company.
Author | : H. van Keulen |
Publisher | : |
Total Pages | : 200 |
Release | : 1975 |
Genre | : Arid regions |
ISBN | : |
Download Simulation of Water Use and Herbage Growth in Arid Regions Book in PDF, Epub and Kindle
Author | : Suhas Pralhad Wani |
Publisher | : CABI |
Total Pages | : 326 |
Release | : 2009-01-01 |
Genre | : Technology & Engineering |
ISBN | : 1845933893 |
Download Rainfed Agriculture Book in PDF, Epub and Kindle
This book, which contains 14 chapters, covers all aspects of rainfed agriculture, starting with its potential, current status, rainwater harvesting and supplementary irrigation, to policies, approaches, institutions for upscaling, and impacts of integrated water management programmes in rainfed areas.
Author | : National Academies of Sciences, Engineering, and Medicine |
Publisher | : National Academies Press |
Total Pages | : 607 |
Release | : 2017-01-28 |
Genre | : Science |
ISBN | : 0309437385 |
Download Genetically Engineered Crops Book in PDF, Epub and Kindle
Genetically engineered (GE) crops were first introduced commercially in the 1990s. After two decades of production, some groups and individuals remain critical of the technology based on their concerns about possible adverse effects on human health, the environment, and ethical considerations. At the same time, others are concerned that the technology is not reaching its potential to improve human health and the environment because of stringent regulations and reduced public funding to develop products offering more benefits to society. While the debate about these and other questions related to the genetic engineering techniques of the first 20 years goes on, emerging genetic-engineering technologies are adding new complexities to the conversation. Genetically Engineered Crops builds on previous related Academies reports published between 1987 and 2010 by undertaking a retrospective examination of the purported positive and adverse effects of GE crops and to anticipate what emerging genetic-engineering technologies hold for the future. This report indicates where there are uncertainties about the economic, agronomic, health, safety, or other impacts of GE crops and food, and makes recommendations to fill gaps in safety assessments, increase regulatory clarity, and improve innovations in and access to GE technology.