Food from Dry Lands : An Integrated Approach to Planning of Agricultural Development

By: C.T. de Wit (Editor), Th. Alberda (Editor), N.G. Seligman (Editor), H. van Keulen (Editor)

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232 Pages

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17.6 x 25.4 x 1.9

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The book centers around an analysis of the options for the agronomic development of semiarid regions with winter rains (i.e. Mediterranean regions). Data obtained in the northern Negev desert in Israel serve as a starting point. On the basis of these data crop and sheep husbandry systems were designed and integrated into agro-pastoral systems in which small-grain crops act as a buffer for feed production. These systems served as a basis for rational planning of regional agricultural development under alternative development objectives. In analysing the possibilities a three-step approach was developed: first the feasibility and robustness of selected innovative techniques at the farm level were investigated in relation to variability in weather and prices, then a matrix of production techniques for a region was formulated in terms of their physical inputs and outputs, and finally this matrix was embedded into a dynamic multiple-goal linear programming model. In comparing the results for different goals, the consequences for goal achievement and desired production techniques can be made explicit, and in this way the book can be a guide for actual development planning in semiarid regions.

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You Can Find This Book In

Non-Fiction Engineering & Technology Agriculture & Farming Animal Husbandry Science Biology, Life Sciences Life Sciences in General Ecological Science Agronomy & Crop Production Botany & Plant Sciences Plant Reproduction & Propagation Industry & Industrial Studies

Forestry & Silviculture Practice & Techniques Nature & The Natural World Trees, Mushrooms, Wildflowers & Plants

Contributors
Foreword
Acknowledgements
Introduction	p. 1
In the current of change	p. 1
The natural environment	p. 2
Agro-pastoral systems	p. 3
Perspectives for development	p. 4
Structure and dynamics of grazing systems on seasonal pastures	p. 7
Within-season plant biomass dynamics under grazing	p. 13
Between-season plant population dynamics and the effects of grazing	p. 20
Moisture, nutrient availability and plant production in the semi-arid region	p. 25
The water balance	p. 26
The soil nitrogen balance	p. 31
Plant production limited by weather, mainly water availability	p. 37
Plant production limited by weather and nitrogen availability	p. 56
Grain production in a semi-arid environment	p. 69
Sheep husbandry for lamb production in a semi-arid mediterranean environment	p. 83
The grazing environment	p. 83
Breeds of sheep in Israel	p. 85
Reproduction and breeding practice	p. 86
Ewe nutrition	p. 88
Lamb production	p. 92
Flock management	p. 95
Pasture productivity and systems of utilization	p. 96
Description of a pasture system generator (PSG)	p. 101
Calculation of system inputs and outputs	p. 107
Cropping systems	p. 120
PSG activity table	p. 121
Input and output values calculated by the PSG	p. 121
Management of agro-pastoral systems at the farm level	p. 133
Short-term decisions	p. 136
The agro-pastoral system model	p. 146
Results of the agro-pastoral system model	p. 147
Economic efficiency and technical efficiency	p. 154
Modelling agricultural development strategy	p. 159
The multiperiod regional development model	p. 161
Interactive multiple-goal planning	p. 177
An example of the application	p. 181
Model activities and constraints by categories	p. 190
Summary	p. 193
Primary production	p. 193
Secondary production	p. 195
The matrix of production techniques	p. 197
Management under uncertainty	p. 198
Regional development	p. 198
References	p. 201
Table of Contents provided by Blackwell. All Rights Reserved.

Food from Dry Lands : An Integrated Approach to Planning of Agricultural Development

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Hardcover

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