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The world's most comprehensive, well documented, and well illustrated book on this subject. With extensive subject and geographic index. 162 photographs and illustrations - including many early seed catalog covers. Free of charge in digital PDF format.
The world's most comprehensive, well documented, and well illustrated book on this subject. With extensive subject and geographical index. 115 photographs and illustrations - many color. Free of charge in digital PDF format.
One of the world's most comprehensive, well documented and well illustrated books on this subject, With extensive subject and geographic index. 106 photographs and illustrations - mostly color. Free of charge in digital format on Google Books.
Thorough coverage of rice, from cultivar development tomarketing Rice: Evolution, History, Production, and Technology, the thirdbook in the Wiley Series in Crop Science, provides unique,single-source coverage of rice, from cultivar developmenttechniques and soil characteristics to harvesting, storage, andgermplasm resources. Rice covers the plant's origins and history,physiology and genetics, production and production hazards,harvesting, processing, and products. Comprehensive coverage includes: * Color plates of diseases, insects, and other productionhazards * The latest information on pest control * Up-to-date material on marketing * A worldwide perspective of the rice industry Rice provides detailed information in an easy-to-use format, makingit valuable to scientists and researchers as well as growers,processors, and grain merchants and shippers.
This book aims to help plant breeders by reviewing past achievements, currently successful practices, and emerging methods and techniques. Theoretical considerations are also presented to strike the right balance between being as simple as possible but as complex as necessary. The United Nations predicts that the global human population will continue rising to 9.0 billion by 2050. World food production will need to increase between 70-100 per cent in just 40 years. First generation bio-fuels are also using crops and cropland to produce energy rather than food. In addition, land area used for agriculture may remain static or even decrease as a result of degradation and climate change, despite more land being theoretically available, unless crops can be bred which tolerate associated abiotic stresses. Lastly, it is unlikely that steps can be taken to mitigate all of the climate change predicted to occur by 2050, and beyond, and hence adaptation of farming systems and crop production will be required to reduce predicted negative effects on yields that will occur without crop adaptation. Substantial progress will therefore be required in bridging the yield gap between what is currently achieved per unit of land and what should be possible in future, with the best farming methods and best storage and transportation of food, given the availability of suitably adapted cultivars, including adaptation to climate change. My book is divided into four parts: Part I is an historical introduction; Part II deals with the origin of genetic variation by mutation and recombination of DNA; Part III explains how the mating system of a crop species determines the genetic structure of its landraces; Part IV considers the three complementary options for future progress: use of sexual reproduction in further conventional breeding, base broadening and introgression; mutation breeding; and genetically modified crops.
The world's most comprehensive, well documented, and well illustrated book on this subject. With extensive subject and geographic index. 58 photographs and illustrations - many color. Free of charge in digital PDF format.
Perhaps one of the most distinctive and studied geographers of the twentieth century, Carl O. Sauer (1889--1975) had influence that extends well beyond the confines of any one discipline. With a focus on historical and cultural geography, Sauer's essays have garnered praise from poets, natural historians, and social scientists alike who continue to explore Sauer's work. In Carl Sauer on Culture and Landscape, editors William M. Denevan and Kent Mathewson have compiled thirty-seven of Sauer's original works, including rare early writings, articles in now largely inaccessible publications, and transcriptions of key oral presentations that remain little known. A student of the relationships between land and life, people and places, Sauer helped establish landscape studies in cultural geography and paved the way for paradigmatic shifts in the scholarly assessment of Native American history. By strongly advocating a land ethic, "a responsible stewardship of the sustaining earth," for his own and for future generations, Carl Sauer supplied an esthetic rationale and a historical perspective to the environmental movement. The volume opens with two extended essays on Sauer's critics and his works. Essays by prominent geographers and other authorities on Sauer introduce each section of the book, adding a contemporary element to the presentation and interpretation of Sauer's life and scholarship in areas such as soil conservation, man in nature, and cultivated plants. A complete bibliography of his publications and an extensive compilation of commentaries on his life and work make this an indispensable reference. Carl Sauer on Culture and Landscape sheds new light on Sauer's contributions to the history of geographic thought, sustainable land use, and the importance of biological and cultural diversity -- all of which remain key issues today.