Download or read book The Development of Winged Forms and Migration of the Pea Aphid Illinoia Pisi Kalt in Relation to Changes in the Moisture Nitrogen Sugar and Phosphorus Content of the Food Plants written by Alfred Weed and published by . This book was released on 1928 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Physical and Physiological Conditions which Produce Wing Development in the Pea Aphid Illinoia Pisi Kalt written by Carl William Schaefer and published by . This book was released on 1937 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Catalogue written by University of Wisconsin and published by . This book was released on 1929 with total page 794 pages. Available in PDF, EPUB and Kindle. Book excerpt: Some nos. include Announcement of courses.
Download or read book Comprehensive Dissertation Index 1861 1972 Biological sciences biology and zoology written by Xerox University Microfilms and published by . This book was released on 1973 with total page 1240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comprehensive Dissertation Index 1861 1972 Author index written by Xerox University Microfilms and published by . This book was released on 1973 with total page 1116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cultural Practices and Infectious Crop Diseases written by Josef Palti and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 259 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of a crop, and therefore its health, is always the result of interplay between biological and environmental factors, as influenced by human agency. In other words, crop health is a highly complex affair. This book is concerned with only one group of agents affecting crop health, the pathogens, and not with animal pests or direct effects of physiological or weather factors. Even within this one group, however, the interaction of causal agents with environmental and biotic factors is highly complex. No less complex is the effect of cultural practices on the crop and its health. There is probably no major practice that does not affect diverse facets of crop growth, which in turn affects crop/pathogen relationships. Thus tillage se quentially affects depth and rate of root development, hence nutrient uptake, hence general plant size and habit as well as crop climate and crop susceptibility. Irri gation affects all these parameters, and facilitates crop growth under diverse macro climatic conditions, with all the ensuing implications for disease development. In this book an attempt is made to superimpose one set of complexities, the cul tural practices, on another such set, crop health. This may seem overambitious, not to say foolhardy, unless we remember that it has been done by farmers, consciously or unconsciously, ever since the beginnings of agriculture. We are here chiefly try ing to rationalize traditional practices, review modern research on the development of further practices, and assess the place of the latter in integrated disease control.
Download or read book Maize Research written by Jiban Shrestha and published by Nipa. This book was released on 2023-07-08 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book uates its readers about the methods and management of livestock during disasters. The book has covered all mad made and natural disasters and their effect on livestock and how they can be managed better for longer survival and help to the humans. Topics on how animals can sense a disaster in advance and what are the common indications given by them and how humans can benefit from it. Book elucidates the management of feeding, feed resources, production and health so as to make the livestock production economical. It is hoped that the compilation will prove useful for the researchers, planners and policy makers to understand the causes for the loss of productivity and health of livestock in drier regions and help in devising management plans towards sustenance and improvement of production.
Download or read book Recent Advances in Weed Management written by Bhagirath S. Chauhan and published by Springer. This book was released on 2014-07-10 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume addresses recent developments in weed science. These developments include conservation agriculture and conservation tillage, climate change, environmental concerns about the runoff of agrochemicals, resistance of weeds and crops to herbicides, and the need for a vastly improved understanding of weed ecology and herbicide use. The book provides details on harnessing knowledge of weed ecology to improve weed management in different crops and presents information on opportunities in weed management in different crops. Current management practices are also covered, along with guidance for selecting herbicides and using them effectively. Written by experts in the field and supplemented with instructive illustrations and tables, Recent Advances in Weed Management is an essential reference for agricultural specialists and researchers, government agents, extension specialists, and professionals throughout the agrochemical industry, as well as a foundation for advanced students taking courses in weed science.
Download or read book Insects of Western North America written by Edward Oliver Essig and published by . This book was released on 1926 with total page 1060 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Les Insectes written by Louis Félix Henneguy and published by . This book was released on 1904 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recent Advances in Entomology written by A. D. Imms and published by Palala Press. This book was released on 2018-02-20 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book A Bibliography of Fossil Insects written by Scudder Samuel Hubbard and published by Legare Street Press. This book was released on 2023-07-18 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a comprehensive bibliography of fossil insects and includes references to scientific articles, books, and other publications on the topic. It is an essential resource for researchers and scholars interested in the study of fossil insects. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
