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The first section reviews trends of bean production and constraints in Latin America and Africa. The second section covers fungal diseases. The third section, bacterial diseases. The fourth section, viral and mycoplasma diseases. The fifth section, insect pests. The last section, other bean production constraints, that is, nutritional disorders, nematodes, seed pathology, and additional problems.
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For the past thirteen years, symposia have been held either in South America or in Mexico on subjects of special interest to Latin American scientists. When the opportunity of holding the 14th International Biological Symposium in Guate mala was offered, it was most welcome, especially as the occasion was the celebration of the 25th Anniversary of the Institute of Nutrition of Central America and Panama (INCAP). With the encouragement of members of the Ford Foundation staff and the National Academy of Sciences, the idea for a symposium on the broad approach to the problem of nutrition was developed by Dr. Moises Behar, the second director of INCAP, 1961-1974, Dr. Nevin Scrimshaw, fIrst direc...
The period following the second world war has witnessed an expanding commitment to incr~ased food production in tropical countries. Public and private initiatives at the national and international levels have led to the creation of programs geared specifically towards the improvement of food crops in tropical conditions. Examples of this increased commitment are the network of international agricultural research centers and numerous bilateral aid projects. As a consequence, crop improvement has become a truly worldwide endeavor, relying on an international network of institutions and collaborators. This holds also for Phaseolus beans. Following the discovery of the Americas, Phaseolus beans ...