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The world needs for food and fiber continue to increase. Population
growth in the developing countries peaked at 2. 4 percent a year in
1965, and has fallen to about 2. 1 percent. However, in many
developing countries almost half the people are under 15 years of
age, poised to enter their productive and reproductive years. The
challenges to produce enough food for this growing population will
remain great. Even more challenging is growing the food in the
areas of greatest need. Presently the world has great surpluses of
food and fiber in some areas while there are devastating
deficiencies in other areas. Economic conditions and the lack of
suitable infrastructure for distribution all too often limit the
alleviation of hunger even when there are adequate supplies,
sometimes even within the country itself. World hunger can only be
solved in the long run by increasing crop production in the areas
where the population is growing most rapidly. This will require
increased efforts of both the developed and developing countries.
Much of the technology that is so successful for crop production in
the developed countries cannot be utilized directly in the
developing countries. Many of the principles, however, can and must
be adapted to the conditions, both physical and economic, of the
developing countries.
Agricultural system models enhance and extend field research...to
synthesize and examine experiment data and advance our knowledge
faster, to extend current research in time to predict best
management systems, and to prepare for climate-change effects on
agriculture. The relevance of such models depends on their
implementation. Methods of Introducing System Models into
Agricultural Research is the ultimate handbook for field scientists
and other model users in the proper methods of model use. Readers
will learn parameter estimation, calibration, validation, and
extension of experimental results to other weather conditions,
soils, and climates. The proper methods are the key to realizing
the great potential benefits of modeling an agricultural system.
Experts cover the major models, with the synthesis of knowledge
that is the hallmark of the Advances in Agricultural Systems
Modeling series.
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