The Biology and Agronomy of Stylosanthes
The Biology and Agronomy of Stylosanthes

Author: Helen Stace

Publisher: Elsevier

Published: 2012-12-02

Total Pages: 655

ISBN-13: 032314392X

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The Biology and Agronomy of Stylosanthes covers the proceedings of the 1982 International Symposium on The Biology and Agronomy of Stylosanthes, held in Townsville, Queensland, Australia. The symposium aims to present the developments in the research of the economically important genus, Stylosanthes. Comprised of three parts encompassing 31 chapters, the book discusses Stylosanthes taxonomy, genetic resources, plant-environment interaction, and agronomy. The opening part discusses the taxonomic problems, evolution, and cytogenetic studies of Stylosanthes species. This part also considers the natural variation and distribution, Brazilian species, and existing collection of the genus. The second part of the book presents available data on the occurrence of water shortage in plant tissue and how plants react to it. This part also deals with other environmental constraints to growth and survival, the mineral nutrition, reproductive physiology, and diseases and pest problems of Stylosanthes. A discussion on the influence of mycorrhiza and rhizobium in the genus is also included. The concluding part examines the effect of seed biology on initial pasture establishment and the population dynamics of established pastures. Considerable chapters in this part are devoted to the agronomical aspects of the genus, including nitrogen inputs; chemical composition and nutritive value; and animal and seed production. The book further presents data on global ventures in Stylosanthes, including agricultural projects, research and development, breeding programs, and productivity programs in various regions. This book is an ideal source of information for biologists, agronomists, scientists, and researchers.

Fertilizer sulfur and food production
Fertilizer sulfur and food production

Author: Mohinder Mudahar

Publisher: Springer Science & Business Media

Published: 2013-04-17

Total Pages: 258

ISBN-13: 9401715408

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Fertilizer is a vital component of strategies for expanding foodproduction. The rapid growth in population and the widening food deficits inmany tropical countries ofAsia, Africa, and Latin America call attention to those aspects of fertilization that have been neglected but are expected to yield large economic payoffs in the future. Fertilizer sulfur falls into this category. In the past fertilizer sulfur received little attention from researchers and policymakers since sulfur deficiency was not considered a serious problem. It was not a problem because of low crop yields, extensive cropping, and the incidental supply of sulfur through rain, irrigation water, manures, and sulfurcontaining fertilizers. However, the situation has changed in the last three decades. Moder nagriculture based on high crop yields, intensive cropping, improved crop varieties, and greater use of sulfur-free fertilizers and environmental regula tions restricting sulfur emissions are creating large gaps between sulfur sup ply and sulfur requirements. Sulfur deficiencies are widespread and grow ing. Consequently, the full potential of a modern agricultural system in tropical countries is not being realized. This research effort results from the recognition of the seriousness of the sulfur problem and its adverse impact on food production as well as IFDC's dedication to the development and transfer of economically ef ficient fertilizer technology to tropical countries. This study represents a comprehensive analysis ofthe technical and economic linkages between fer tilizer sulfur and food production, and it provides guidelines for future directions in fertilizer sulfur research and public policy.