Download or read book Compendium of Potato Diseases written by W. J. Hooker and published by International Potato Center. This book was released on 1981 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: Disease in the absence of infectious pathogens. Genetic abnormalities. Adverse environment. Nutrient imbalance. Disease in the presence of infectious pathogens. Fungi. Viruses. Mycoplasmas. Insect toxins. Nematodes. Aphids. Seed potato certification.

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 Mediterranea written by and published by . This book was released on 1975 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Phytoma written by and published by . This book was released on 1972 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Principales Maladies Insectes Et N matodes de la Pomme de Terre written by and published by International Potato Center. This book was released on 1990 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Les principales maladies de la pomme de terre written by Vital Ducomet and published by . This book was released on 1924 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Maladies insectes nuisibles et utiles de la pomme de terre guide d identification written by Christine Jean and published by Sainte-Foy, Québec : Institut de recherche et de développement en agroenvironnement. This book was released on 2002* with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Compendium of Cucurbit Diseases written by Thomas Andrew Zitter and published by American Phytopathological Society. This book was released on 1996 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Infectious diseases; Noinfections disorders; Disease of undetermined etiology; Postharvest handling; Field identification of selected cucurbit diseases with a hand lens.