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icipe's mission is to help alleviate poverty, ensure food security and improve the overall health status of peoples of the tropics by developing and extending management tools and strategies for harmful and useful arthropods, while preserving the natural resource base through research and capacity building.  

The 20th Annual Report of ICIPE discusses the organization of the centre's research around four principal programmes: Crop Pests, Livestock Pests, Locust and Medical Vectors. Institutional Building, Interactive Research and Information (IBIRI) consolidates training, education, information and networking to form the fifth programme. The programmes are supported by five Research Units: Behaviour ...

SUBJECT: plagas de animales; control de plagas; programme de formation; lutte biologique; lutte integree

The anatomical and biochemical basis of resistance of Vigna vexillata Benth (Acc. TVNu. 72) to Maruca testulalis were investigated. The methods used were electron microscopy scanning of petals, light microscopy scanning of stem and pod wall, determination of soluble sugars, and determination of phenol content in different parts of the cowpea plant based on the formation of prussian blue comple ...

SUBJECT: chimiotaxonomie; anatomie vegetale; anatomia de la planta; microscopie; vigna vexillata

POSTED TO: Insect Science and its Application (ICIPE) [0191-9040]

Field studies to investigate the effect of intercropping on the relative resistance and susceptibility of cowpea cultivars to Maruca testulalis in pure stands and intercropped with maize, were conducted at The International Centre of Insect Physiology and Ecology (ICIPE). Two selected cowpea cultivars, TVU 946 and ICV 2 were used for the study. It was clearly indicated that intercropping affec ...

SUBJECT: cultivo mixto; culture en melange; cultivo intercalado; variedades; zea mays

POSTED TO: Insect Science and its Application (ICIPE) [0191-9040]

The mechanisms of resistance of different maize cultivars to Chilo partellus is studied, with the aim of helping breeders combine resistance factors with other desirable agronomic factors. Described is the consumption of food from different maize cultivars by the larvae, its utilization, leading to their growth, egg production, oviposition and egg hatchability. The results show the degree of r ...

SUBJECT: ingestion de piensos; eclosabilidad del huevo; efficacite alimentaire; taux de croissance; variete

POSTED TO: Insect Science and its Application (ICIPE) [0191-9040]

The paper discusses the concept of agricultural sustainability in appropriate perspective based on a review of pertinent literature. It also seeks to establish the critical linkage between technology and sustainibility with particular reference to the development of agriculture. Finally, it highlights the basic limitations of agricultural research in sub-saharan Africa and the need for its sig ...

SUBJECT: technologie appropriee; africa al sur del sahara; desarrollo agricola; developpement agricole; afrique au sud du sahara

POSTED TO: Social Science Interface Research Unit-Research Paper No. 12 (ICIPE)

Earias vittella (Fabricius) feeds on some malvaceous plant species, but has never been reported to attack Thespesia populnea Cav., even though this plant belongs to the same family. The factors responsible for the failure of E. vittella to establish on T. populnea were, therefore, studied. When whole fruits or fruit pericarps of this plant were provided as larval food, larvae failed to develop ...

SUBJECT: etanol; phagorepulsif; graisse brute; grasa bruta; earias vittella

POSTED TO: Insect Science and its Application (ICIPE) [0191-9040]

Nature of resistance against the rice leaffolder, Cnaphalocrocis medinalis(Guenee) was studied in 16 rice varieties selected on the basis of greenhouse feeding test. Resistant varieties as a group were less preferred for feeding by larvae in a free choice test lasting 10 days. Cut leaf assay with limited choice brought out subtle differences among some of the test varieties in larval settling ...

SUBJECT: cnaphalocrocis medinalis; variedades; variete; resistencia a las plagas; antagonisme

POSTED TO: Insect Science and its Applications (ICIPE) [0191-9040]

Four maize varieties, 8321-21-W, DMR-LSR-W, ACR-83TZUT-W and TZB were simultaneously fed to Sitophilus zeamais in a completely randomized design. Susceptibility was assessed on such parameters as weight loss of grains caused by weevil infestation, number of progenies assesed on such parameters as weight loss of grains caused by weevil infestation, number of progenies at 42 days after infestati ...

SUBJECT: sitophilus zeamais; zea mays; resistencia a las plagas; resistance aux organismes nuisibles

POSTED TO: Insect Science and its Applications (ICIPE) [0191-9040]

A series of experiments involving plots of sole cowpeas and sorghum/cowpea intercrops were carried out, on-farm, in Minjibirr village, northern Nigeria between 1986 and 1988. The objectives were to: (1) elucidate the relationships between sorghum/cowpea intercropping, insect pest numbers and grain yield reductions in cowpea. (2) examine the role of sorghum/cowpea intercropping alone or togethe ...

SUBJECT: sorghum; nigeria; cultivo intercalado; rendement des cultures; cultivo puro

POSTED TO: Insect Science and its Application (ICIPE) [0191-9040]

An experiment to examine the effects of four agrometeorological factors on population fluctuations in legume pod borer, Maruca testulalis (Geyer) in two cowpea varieties was carried out under field conditions in Ibadan, Nigeria. Plots, 5 by 10m each, of cowpea varieties IT84s-2246-4 and Dan ilan were planted fortnightly between 5 May and 5 October 1988 (12 plantings in all for each variety). T ...

SUBJECT: meteorologie; caupi; niebe; nigeria; meteorologia

POSTED TO: Insect Science and its Applications (ICIPE) [0191-9040]