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Conference Documents: Recent submissions
Now showing items 461-480 of 727
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Multidisciplinary approach to pest management and the African farmer
(1974)Ecological consideration indicate that traditional agroecosystems involving mixed cropping and genetic diversity among crop species are relatively more stable than modern agroecosystems. Modern food production technologies involving more uniform crops over wide areas, use of more costly inputs and associated pest problems are ecologically less stable. With population pressure, greater pressures on the land and shortening of periods of natural recycling of nutrients reduced yields and loss of soil ... -
Appropriate support for national programs; training, research, administration and funding
(1989)The Biological Control Program (BCP)of the International Institute of Tropical Agriculture and national biological control programs, established specifically to control exotic cassava pests in Africa, are now evolving to address other pest problems. Formal training syllabuses are therefore to be broadened. Equally important is the need for the BCP and national researchers to collaborate to bring the value of biological control to the attention of decision makers. National programs currently need ... -
Insect and disease resistance from tropical maize for use in temperate zone hybrids
(1988)Biotic constraints (insects, diseases, parasitic weeds) and abiotic stresses (drought) are widespread and pose a constant threat to maize production worldwide. Tropical environments provide the greatest opportunity for evolution of insects and diseases because of the favourable year- round climatic conditions. Year-round breeding programs permit selection of stable general resistance against specific or combined challenges. The IITA Maize Program initiated a line-development project in 1979. The ... -
Highlight of grain legume improvement at IITA
(1973-10) -
Improvement of cereals in tropical Africa
(1973-09) -
Problems of rice breeding in West Africa: paper presented at the WARDA Seminar on Rice Breeding and Varietal Improvement, 15th January, 1973
(1973-01)Different types of problems are to be tackled by West African breeders to make important improvement on the West African varieties. The most important are those that directly concern the morphology and physiology of the rice varieties. The first major change should be the reduction in height, and production of shorter and narrower leaves. Different maturity ranges are required to satisfy the rain patterns and ecology of a particular area. The morphological and physiological problems are to be ...
