Of costs by tenure. pp. 51.

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Sugar beet, alongside sugar cane, is the main source of sugar across the world. Grown widely in Europe, North and South America, Asia and parts of North Africa, the crop is at the core of a multi-billion dollar global industry. A. Philip Draycott has gathered 32 international experts to create this defining text, providing a comprehensive review of the latest research in a clear and accessible form, providing the reader with: Definitive account of this major world crop Coverage of all aspects of successful sugar beet growing Over 2,500 references from international literature Colour images to assist in the identification of sugar beet pests, diseases and nutrient deficiencies All those involved with the crop, including growers and processors, sugar beet and sugar organisations and society members will find this book to be an invaluable resource. Agricultural and plant scientists, food scientists and technologists and all libraries in research institutions where these subjects are studied and taught will find it a valuable addition to their shelves.

First published in 1972, Farm Management in Peasant Agriculture remains the only detailed discussion of on-site research techniques for economists working on the development of small-holder agriculture in Africa. Part 1 describes the conditions of the agricultural sector within which the African peasant farmer must operate, and then outlines an approach to farm management tailored to those conditions. Part 2 sets out the research planning and investigation tasks implied by the approach. Survey techniques, as well as the value of a pre-survey for understanding general attributes of a farm system, are reviewed, and alternative data-collection methods are elaborated. Part 3 shows how research data can be used in planning content for extension programs. Dr. Collinson concludes with the details of a planning method that interpolates changes in farm practice into a model of the existing farm system and that projects a sequence of changes, representing a sequence of extension content, on the basis of farmer acceptability.

Calculation of crop evapotranspiration; Selection of crop coeficient; Calculation of field irrigation requirements.