A Systems Analysis Approach to Nitrogen Management in the Northern U.S. Corn Belt

A Systems Analysis Approach to Nitrogen Management in the Northern U.S. Corn Belt PDF Author: Steven Lyle Oberle
Publisher:
ISBN:
Category :
Languages : en
Pages : 278

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A Systems Analysis Approach to Nitrogen Management in the Northern U.S. Corn Belt

A Systems Analysis Approach to Nitrogen Management in the Northern U.S. Corn Belt PDF Author: Steven Lyle Oberle
Publisher:
ISBN:
Category :
Languages : en
Pages : 278

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Book Description


Crop Evolution, Adaptation and Yield

Crop Evolution, Adaptation and Yield PDF Author: L. T. Evans
Publisher: Cambridge University Press
ISBN: 9780521295581
Category : Science
Languages : en
Pages : 516

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Book Description
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.

Flux and Sources of Nutrients in the Mississippi-Atchafalaya River Basin

Flux and Sources of Nutrients in the Mississippi-Atchafalaya River Basin PDF Author:
Publisher:
ISBN:
Category : Marine eutrophication
Languages : en
Pages : 152

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Dissertation Abstracts International

Dissertation Abstracts International PDF Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 760

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OECD Compendium of Agri-environmental Indicators

OECD Compendium of Agri-environmental Indicators PDF Author: OECD
Publisher: OECD Publishing
ISBN: 9264186212
Category :
Languages : en
Pages : 185

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Book Description
Provides comprehensive data and analysis on the environmental performance of agriculture in OECD countries since 1990, covering soil, water, air and biodiversity and looking at recent policy developments in all 34 countries.

Proceedings of the ... Fertilizer, Aglime and Pest Management Conference

Proceedings of the ... Fertilizer, Aglime and Pest Management Conference PDF Author:
Publisher:
ISBN:
Category : Agricultural pests
Languages : en
Pages : 650

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Assessment of Residual Fertilizer Nitrogen in a Long-term Crop Sequence Study

Assessment of Residual Fertilizer Nitrogen in a Long-term Crop Sequence Study PDF Author: Matias Bernardo Vanotti
Publisher:
ISBN:
Category :
Languages : en
Pages : 458

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Soil Nitrogen Uses and Environmental Impacts

Soil Nitrogen Uses and Environmental Impacts PDF Author: Rattan Lal
Publisher: CRC Press
ISBN: 1351857401
Category : Nature
Languages : en
Pages : 561

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Book Description
Nitrogen (N) is potentially one of the most complex elements on the Earth. It is necessary for all biological activity, but creates negative impacts on water and air quality. There is a balancing act between deficiency and surplus and the forms of N available further complicate our understanding of the dynamics. Biological fixation provides some plants with N supply while others are totally dependent upon N being available in the soil profile for the roots to extract. Nevertheless, the demand for N will increase because the human population with its increasing growth requires more protein and thus more N. Understanding the global N cycle is imperative to meeting current and future nitrogen demands while decreasing environmental impacts. This book discusses availability, production, and recycling of N in air, water, plants, and soils. It features information on N impacts to soil and water quality, management of N in agroecosystems, and techniques to maximize the use efficiency while minimizing the risks of leakage of reactive N into the environment. This volume in the Advances in Soil Science series is specifically devoted to availability, production, and recycling of N with impact on climate change and water quality, and management of N in agroecosystems in the context of maximizing the use efficiency and minimizing the risks of leakage of reactive N (NO-3, N¬2O) into the environment.

Managing Cover Crops Profitably (3rd Ed. )

Managing Cover Crops Profitably (3rd Ed. ) PDF Author: Andy Clark
Publisher: DIANE Publishing
ISBN: 1437903797
Category : Technology & Engineering
Languages : en
Pages : 248

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Book Description
Cover crops slow erosion, improve soil, smother weeds, enhance nutrient and moisture availability, help control many pests and bring a host of other benefits to your farm. At the same time, they can reduce costs, increase profits and even create new sources of income. You¿ll reap dividends on your cover crop investments for years, since their benefits accumulate over the long term. This book will help you find which ones are right for you. Captures farmer and other research results from the past ten years. The authors verified the info. from the 2nd ed., added new results and updated farmer profiles and research data, and added 2 chap. Includes maps and charts, detailed narratives about individual cover crop species, and chap. about aspects of cover cropping.

From the Corn Belt to the Gulf

From the Corn Belt to the Gulf PDF Author: Joan I Nassauer
Publisher: Taylor & Francis
ISBN: 1136525351
Category : Law
Languages : en
Pages : 274

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Book Description
Nutrients from farms in the Mississippi River Basin are the leading cause of the Gulf of Mexico‘s 'Dead Zone,' a 5,000 to 7,000 square mile region where declining oxygen levels are threatening the survival of marine life. From the Corn Belt to the Gulf explores how new agricultural policy can help alleviate this problem, and at the same time improve water quality overall, enhance biodiversity, improve the quality of life for the people who live and work in Corn Belt communities, and relieve downstream flooding. The themes of the book are the far-reaching environmental impacts of Corn Belt agriculture, including associated economic and social effects at multiple spatial scales - and the potential for future agricultural policy to address those impacts through changes in agricultural landscapes and practices. We know that the environmental 'footprint' of Corn Belt agriculture extends beyond farmland and adjacent lakes and streams to groundwater, rivers, cities downstream, into the Gulf of Mexico, and, ultimately, to global oceanic and atmospheric systems. And we acknowledge that agricultural policies, including commodity support payments, have economic impacts at the national and international levels. Pressing negotiations with America‘s trade partners, along with increasing societal attention to both the costs and environmental effects of current agricultural policy, are creating momentum for policy change. From the Corn Belt to the Gulf presents innovative, integrated assessments of the agriculture and ecological systems in the Mississippi River Basin along with studies of local Iowa agricultural watersheds. Contributors from multiple academic and professional disciplines discuss how agricultural policies have contributed to current environmental conditions, and, in what the authors term 'alternative futures' for agricultural landscapes, envision how new policy can help achieve more beneficial patterns.