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Compared with forces occurring in soil mechanics problems in civil engineering, the forces that are applied to soil in farming operations generally have a short duration, less than a few seconds, a small loaded area, no more than a few square decimeters, and small intensities, 10 bar being a high value.

A more complete understanding of soil chemistry and plant nutrition has led to greater fertilizer use with improved fertilization methods and crop cultural practices. The modem fertilizer industry and with it fertilization practices began in the humid countries of the world.

The Advanced Series in Agricultural Sciences is designed to fill a long-felt need for advanced educational and technological books in the agricultural sciences.

This book provides a quantitative analysis of the role of woody plants in semi-arid regions, for the aSSessment of their benefits in agrosylvopastoralland-use systems with productive and sus tainability objectives.

The Advanced Series in Agricultural Sciences is designed to ftll a long-felt need for advanced educational and technological books in the agricultural sciences.

Thereafter, our specific research interests diver sified, but we continued to work together, with similar approaches to research, and to strive towards the development of Israel soil science and its integration into general worldwide scientific progress.

This book has been written for those whose interests bridge food processing and physicochemical aspects of radiation. Safety and wholesomeness of irradiated foods, analytical methods for postirradiation dosimetry in foods, and consumer acceptance of food irradiation conclude this section.

Properly treated sewage effluent becomes an alternative source of irrigation water, and at the same time it provides a convenient means of sewage disposal through land treatment to prevent potential health and environmental hazards caused by uncontrolled flow of wastewater.

The Plant Root and the Rhizosphere was a major topical feature of the first International Symposium on Factors Determining the Behavior of Plant Pathogens in Soil held at the University of California, Berkeley in 1963.

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. 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.

One of the points clearly stressed in the beginning of this book is that the essential feature of any dynamic system is change and that, where there is change, there may also be growth and evolution.

The purpose of this book is to provide the reader with some basic information applicable to cattle feeding. MATSUSHIMA Fort Collins, January 1979 Contents Chapter 1 Nutrients 1 Proximate Feed Analysis 1 Chemical Classification of Nutrients 2 1.1 Water 3 1.1.1 Drinking Water ....

As befits a volume in the Advanced Series in Agricultural Sciences, this book was written with problems of practical agriculture in mind. Half the book could not have been written 20 years ago, even if there had then been available all the literature that has since accumulated on the genetics and chemistry of plant disease.

The introduction of new markets, new production centers, shifts in public attitudes, and the realization that greenhouse production is not simply growing crops, but the management of an enterprise in which people work, h~ve combined to make this agricultural practice a challenging and rewarding vocation.

The California school of biological control specialists who followed in Smith's footsteps have traditionally differentiated "natural" biological control (by indigenous natural enemies) and "applied" biological control (by man-introduced natural enemies).

I have for a number of years taught a course in population genetics for students interested in plant and animal breeding. A number of good texts in population genetics are available, of which Li's First Course in Population Genetics is didactically the best.

Hydroponics, the method of growing plants without soil, presents a feasible alternative to conventional farming in areas which are short on water supply and limited in agricultural soil. This book will serve as an indispensable guide for students in the agriculture sciences, for agriculture instructors and soilless-culture farmers.

As the world population increases, there is increasingcompetition for waterquantity as well as quality.Provided here is an up-to-date perspective on AvailableWater Resources (Part I), Water Conservation and TechnologyinAgricultural Systems (Part II), Problem Water Uses andTreatment (Part III),and Management and Policy Evaluation(Part IV).

Presented here is a comprehensive account of boththeoretical and practical aspects of sugarcane production. In thesecond part, energyand fibre cane, cane development, and manufacturingtechniques of sugar and by-products are treated in detail.

Developments in statistics and computing as well as their application to genetic improvement of livestock gained momentum over the last 20 years. It will also serve as a text in graduate courses in animal breeding methodology with prerequisite courses in linear models, statistical inference and quantitative genetics.