Influence of Maize (Zea Mays L.) Spatial Arrangements on the Yield of an Associated Soybean [Glycine Max. (L.) Merr.] Intercrop PDF Download
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Author: James Anthony Njuguna Chui
Publisher:
ISBN:
Category :
Languages : en
Pages : 224
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![Influence of Maize (Zea Mays L.) Spatial Arrangements on the Yield of an Associated Soybean [Glycine Max. (L.) Merr.] Intercrop PDF](https://books.google.com/books/content/images/frontcover/Q5tlNwAACAAJ?fife=w80-h100)
Author: James Anthony Njuguna Chui
Publisher:
ISBN:
Category :
Languages : en
Pages : 224
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Book Description
Author: Josephine P. Tolentino
Publisher:
ISBN:
Category : Corn
Languages : en
Pages : 146
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Book Description
Author: J.K. Ladha
Publisher: Springer Science & Business Media
ISBN: 9401709106
Category : Nature
Languages : en
Pages : 212
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Book Description
Chemical fertilizers have had a significant impact on food production in the recent past, and are today an indispensable part of modern agriculture. On the other hand, the oil crisis of the 1970s and the current Middle East problems are constant reminders of the vulnerability of our fossil fuel dependent agriculture. There are vast areas of the developing world where N fertilizers are neither available nor affordable and, in most of these countries, balance of payment problems have resulted in the removal of N fertilizer subsidies. The external costs of environmental degradation and human health far exceed economic concerns. Input efficiency of N fertilizer is one of the lowest and, in turn, contributes substantially to environmental pollution. Nitrate in ground and surface waters and the threat to the stability of the ozone layer from gaseous oxides of nitrogen are major health and environmental concerns. The removal of large quantities of crop produce from the land also depletes soil of its native N reserves. Another concern is the decline in crop yields under continuous use of N fertilizers. These economic, environmental and production considerations dictate that biological alternatives which can augment, and in some cases replace, N fertilizers must be exploited. Long-term sustainability of agricultural systems must rely on the use and effective management of internal resources. The process of biological nitrogen fixation offers and economically attractive and ecologically sound means of reducing external nitrogen input and improving the quality and quantity of internal resources. In this book, we outline sustainability issues that dictate an increased use of biological nitrogen fixation and the constraints on its optimal use in agriculture.
Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 622
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Sept.-Oct. issue includes list of theses and dissertations for U.S. and Canadian graduate degrees granted in crop science, soil science, and agronomic science during the previous academic year.
Author: Bouwiene Zwaan
Publisher:
ISBN:
Category :
Languages : en
Pages : 53
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Author: Rachel Bidja
Publisher:
ISBN:
Category : Companion crops
Languages : en
Pages : 186
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Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 852
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Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 684
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Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 1022
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Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 400
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