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Yield gap analysis of field crops

2018-06-29 Technology & Engineering
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Release : 2018-06-29
Genre : Technology & Engineering
Kind : eBook
Book Rating : 136/5 ( reviews)

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Book Synopsis Yield gap analysis of field crops by : Food and Agriculture Organization of the United Nations

Download or read book Yield gap analysis of field crops written by Food and Agriculture Organization of the United Nations. This book was released on 2018-06-29. Available in PDF, EPUB and Kindle. Book excerpt: 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.

ORYZA2000

2001 Rice
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Release : 2001
Genre : Rice
Kind : eBook
Book Rating : 716/5 ( reviews)

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Book Synopsis ORYZA2000 by :

Download or read book ORYZA2000 written by . This book was released on 2001. Available in PDF, EPUB and Kindle. Book excerpt:

Crop Evolution, Adaptation and Yield

1996-05-02 Science
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Release : 1996-05-02
Genre : Science
Kind : eBook
Book Rating : 581/5 ( reviews)

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Book Synopsis Crop Evolution, Adaptation and Yield by : L. T. Evans

Download or read book Crop Evolution, Adaptation and Yield written by L. T. Evans. This book was released on 1996-05-02. Available in PDF, EPUB and Kindle. Book excerpt: In this major 1993 work, Lloyd Evans provides an integrated view of the domestication, adaptation and improvement of crop plants, bringing together genetic diversity, plant breeding, physiology and aspects of agronomy. Considerations of yield and maximum yield provide continuity throughout the book. Food, feed, fibre, fuel and pharmaceutical crops are all discussed. Cereals, grain legumes and root crops, both temperate and tropical, provide many of the examples, but pasture plants, oilseeds, leafy crops, fruit trees and others are also considered. After the introductory chapter, the increasing significance of crop yields to the world's food supply is highlighted. The next three chapters consider changes to crop plants over the last ten thousand years, including domestication, adaptation and improvement. Aimed at research workers and advanced students in crop physiology and ecology, agronomy and plant breeding, this book also reaches conclusions of relevance to those concerned with developmental policy, agricultural research and management, environmental quality, resource depletion and human history.

World Water and Food to 2025

2002-01-01 Business & Economics
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Release : 2002-01-01
Genre : Business & Economics
Kind : eBook
Book Rating : 466/5 ( reviews)

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Book Synopsis World Water and Food to 2025 by : Mark W. Rosegrant

Download or read book World Water and Food to 2025 written by Mark W. Rosegrant. This book was released on 2002-01-01. Available in PDF, EPUB and Kindle. Book excerpt: A thirsty world; Alternative futures for water; Consequences of key policy changes; Implications for the future.

Food Security, Farming, and Climate Change to 2050

2010-01-01 Social Science
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Release : 2010-01-01
Genre : Social Science
Kind : eBook
Book Rating : 863/5 ( reviews)

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Book Synopsis Food Security, Farming, and Climate Change to 2050 by : 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

Download or read book Food Security, Farming, and Climate Change to 2050 written by 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. This book was released on 2010-01-01. Available in PDF, EPUB and Kindle. Book excerpt: 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.

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