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Author: Kingston W. Nyamapfene
Publisher:
ISBN:
Category : Soils
Languages : en
Pages : 200
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Book Description
Author: Kingston W. Nyamapfene
Publisher:
ISBN:
Category : Soils
Languages : en
Pages : 200
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Book Description
Author: J. Alfred Zinck
Publisher: Food & Agriculture Org.
ISBN: 9789251036624
Category : Science
Languages : en
Pages : 140
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Book Description
Author: Hans Jenny
Publisher: Springer Science & Business Media
ISBN: 1461261120
Category : Technology & Engineering
Languages : en
Pages : 392
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Book Description
change is simply described by the rate of income and rate of loss. Our home's energy budget, our firm's inventory, our nation's debt, and humanity's numbers all have accounts that change at rates that are equal to the inputs minus the outputs. Jenny's "system view" of the soil was carried into the fertile fields of Midwestern American prairies from the laboratories of Switzerland in the late 1920s. Jenny's rate equations provided the other paradigm or world view that, I recall, brought us to the threshold of systems ecology as it later evolved in the second half of the twentieth century. As if world renown in the specialties of pedology and soil chemistry were not enough for one lifetime, excerpts below remind us that Hans Jenny has also been a perceptive outdoor field ecologist since his early Alpine expeditions with Braun Blanquet in the mid 1920s. Jenny's ecosystem studies in the pygmy forest, a further classic example of a soil-plant system "run down" over hundreds of thousands of years since its origin, continue to occupy some of the vigorous retirement time near his farm in Mendocino County. But each specific, quantitative case study, and each research area conserved (with additional hard work) for further study by future generations, fits into Jenny's coherent world view. It is that view, and its legacies of discovery and of tangible landscape preserves, which we are privileged to share with their originator in this volume.
Author: Pavel Krasilnikov
Publisher: Routledge
ISBN: 1136546634
Category : Technology & Engineering
Languages : en
Pages : 450
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Book Description
Soil classification and terminology are fundamental issues for the clear understanding and communication of the subject. However, while there are many national soil classification systems, these do not directly correlate with each other. This leads to confusion and great difficulty in undertaking comparative scientific research that draws on more than one system and in making sense of international scientific papers using a system that is unfamiliar to the reader. This book aims to clarify this position by describing and comparing different systems and evaluating them in the context of the World Reference Base (WRB) for Soil Resources. The latter was set up to resolve these problems by creating an international 'umbrella' system for soil correlation. All soil scientists should then classify soils using the WRB as well as their national systems. The book is a definitive and essential reference work for all students studying soils as part of life, earth or environmental sciences, as well as professional soil scientists. Published with International Union of Soil Sciences
Author: Adornis Dakarai Nciizah
Publisher: Springer Nature
ISBN: 3031551850
Category :
Languages : en
Pages : 376
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Book Description
Author: Food and Agriculture Organization of the United Nations. Eastern African Sub-Committee for Soil Correlation and Land Evaluation. Meeting
Publisher: Food & Agriculture Org.
ISBN: 9789251022405
Category : Technology & Engineering
Languages : en
Pages : 216
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Book Description
Opening ceremony, Recommendations, Technical papers, Correlation field tour, Discussions and conclusions.
Author: Stephen R. Waddington
Publisher: CIMMYT
ISBN: 9789706480064
Category : Soil fertility
Languages : en
Pages : 324
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Book Description
Author: Jules N. Pretty
Publisher: Routledge
ISBN: 1136529276
Category : Nature
Languages : en
Pages : 292
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Book Description
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: André Bationo
Publisher: CIAT
ISBN: 9966240756
Category : Nutrient cycles
Languages : en
Pages : 632
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Book Description
Author: Andre Bationo
Publisher: Springer Science & Business Media
ISBN: 904812543X
Category : Technology & Engineering
Languages : en
Pages : 1339
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Book Description
Africa can achieve self sufficiency in food production through adoption of innovations in the agriculture sector. Numerous soil fertility and crop production technologies have been generated through research, however, wide adoption has been low. African farmers need better technologies, more sustainable practices, and fertilizers to improve and sustain their crop productivity and to prevent further degradation of agricultural lands. The agricultural sector also needs to be supported by functional institutions and policies that will be able to respond to emerging challenges of globalization and climate change.
