Browsing Journal Articles by Issue Date

Now showing items 1-20 of 516

The challenge of Plant Pretection by the year 2000

Paolo, Piccardi (ICIPE, 2000)

What is the real relevance of plant protection to man's present and future needs? The answer must take into account three important points: • The effects of modern control agents on crop yields • Their economics • ...
The New Breed

Laing, Mark; Shimelis, Hussein; Mcloughlin, Shelagh (The African Centre for Crop Improvement (ACCI), 2002)

For the past 15 years, a small university programme based in Africa’s deep south has been quietly training a new generation of plant breeders, while scattering seeds of innovation across the continent. Born in a moment of ...
Acceptability and Suitability of six Fruit Fly species (Diptera: Tephritidae) for Kenyan Strains of Psyttalia concolor (Hymenoptera: Braconidae)

Mohamed, Samira A.; Overholt, William A.; Lux, Slawomir A.; Wharton, Robert A.; Eltoum, Elameen M. (Taylor & Francis, 2007)

Host acceptability and suitability Psyttalia concolor (Sze´pligeti) is a koinobiont, larval parasitoid of tephritid fruit flies. Individuals of P. concolor were field-collected from coffee in the central highlands of Kenya, ...
Interactions of Two Natural Enemies of Tetranychus evansi, the Fungal Pathogen Neozygites Floridana (Zygomycetes: Entomophthorales) and the Predatory Mite, Phytoseiulus longipes (Acari: Phytoseiidae)

Wekesa, V. W.; Moraes, G. J.; Knapp, M.; Delalibera, I. (Elsevier, 2007)

Tetranychus evansi is an exotic pest of Solanaceous crops in Africa discovered in Zimbabwe in 1979. Two natural enemies, the predatory mite Phytoseiulus longipes and the fungal pathogen Neozygites floridana are important ...
Behaviour and Biology of Chilo partellus (Swinhoe) on Striga Hermonthica (Del.) Benth. Infested and Uninfested Maize Plants

Mohamed, Hassan M.; Khan, Zeyaur R.; Mueke, Jones M.; Hassanali, Ahmed; Kairu, Eunice; Pickett, John A. (Elsevier, 2007)

Stemborers and Striga hermonthica co-exist in cereal fields in sub-Saharan Africa where together they cause crop damage that sometimes results in total crop loss. Striga alters both the chemistry and morphology of cereals ...
Lepidopteran cereal Stemborers and Associated Natural Enemies on Maize and Wild Grass Hosts in Cameroon

Ndemah, S.; Schulthess, F.; Le Rü, B.; Bame, I. (Blackwell Verlag, Berlin, 2007)

In Cameroon, the noctuid Busseola fusca is the most important pest of maize. The braconid Cotesia sesamiae, which is the most common larval parasitoid of noctuid stemborers in eastern Africa, was absent on B. fusca attacking ...
Impact of an exotic parasitoid on Plutella xylostella (Lepidoptera: Plutellidae) population dynamics, damage and indigenous natural enemies in Kenya

Lohr, B.; Gathu, R.; Kariuki, C.; Obiero, J.; Gichini, G. (International Centre of Insect Physiology and Ecology, 2007)

Diadegma semiclausum (Helle´n) (Hymenoptera: lchneumonidae), an exotic diamondback moth parasitoid, was released in two pilot areas (Werugha in Coast Region and Tharuni in Central Province) in Kenya. Fifteen month before ...
Diversité génétique des variétés traditionnelles de niébé [Vigna unguiculata (L.) Walp.] au Sénégal : étude préliminaire

Kouakou, Charles Konan; Roy-Macauley, Harold; Gueye, Mame Coudou; Otto, Marie Claire; Rami, Jean-François; Cissé, Ndiaga (2007)

Diversité génétique des variétés traditionnelles de niébé [Vigna unguiculata (L.) Walp.] au Sénégal : étude préliminaire Des missions de collectes ont été organisées dans les principales régions de production du niébé au ...
Effect of Cropping Systems on Cereal Stemborers in the Cool-wet and Semi-arid Ecozones of the Amhara Region of Ethiopia

Wale, M.; Schulthess, F.; Kairu, Eunice W.; Omwega, Charles O. (The Royal Entomological Society, 2007)

1 Field experiments were conducted on maize and sorghum at three locations in the Amhara state of Ethiopia to determine the effects of mixed cropping on stemborer infestation, borer natural enemies and grain yields. In the ...
Organisation du pool génique de Vigna unguiculata (L.) Walp. : croisements entre les formes sauvages et cultivées du niébé

Kouadio, Daouda; Echikh, Nadejda; Toussaint, André; Pasquet, Rémy S.; Baudoin, Jean-Pierre (BASE, 2007)

Organization of the genic pool of Vigna unguiculata (L.) Walp.: crosses between the wild and cultivated forms of cowpea. Cowpea (Vigna unguiculata (L.) Walp.) gene pool organization is studied on the basis of intra-specifi ...
The Role of Intercropping Different Cereal Species in Controlling Lepidopteran Stemborers on Maize in Kenya

Songa, J. M.; Jiang, N.; Schulthess, F.; Omwega, C. (Blackwell Verlag, Berlin, 2007)

The effects of mixed cropping systems containing maize, sorghum, millet and beans on infestations of cereals by lepidopteran stemborers and on associated parasitoids, as well as on yields and land equivalent ratios (LER) ...
Direct and Indirect Adverse Effects of Tomato on the Predatory Mite Neoseiulus californicus Feeding on the Spider Mite Tetranychus evansi

Koller, M.; Knapp, M.; Schausberger, P. (The Netherlands Entomological Society, 2007)

Plants may defend themselves against herbivores via morphological traits, chemical traits, or a combination of both. Herbivores that overcome the defensive echanisms of a plant tend to specialize on this plant due to ...
Evaluation of Napier grass ( Pennisetum purpureum ) Varieties for use as Trap Plants for the Management of African Stemborer ( Busseola fusca ) in a Push–pull Strategy

Khan, Zeyaur R.; Midega, Charles M.; Wadhams, Lester J.; Pickett, John A.; Mumuni, Abdulai (The Netherlands Entomological Society, 2007)

We evaluated eight Napier grass [Pennisetum purpureum Schumach (Poaceae)] varieties, used in various parts of eastern Africa as fodder, for their potential role as trap plants in the management of the African stemborer, ...
Assessment of Diff erent Legumes for the Control of Striga hermonthica in Maize and Sorghum

Khan, Zeyaur R.; Midega, Charles A.O.; Hassanali, Ahmed; Pickett, John A.; Wadhams, Lester J. (Crop Science Society of America, 2007)

The witchweed, Striga hermonthica (Del.) Benth., is a major constraint to maize (Zea mays L.) and sorghum [Sorghum bicolor (L.) Moench] production in sub-Saharan Africa. Intercropping maize and sorghum with desmodium ...
Efficacy of Spiracular Infection of Helicoverpa armigera with its Nucleopolyhedrovirus and its Role in Virus Production

Jeyarani, S.; Rabindra, R.J.; Sathiah, N.; Karuppachamy, P.; Subramanian, S. (Elsevier, 2007)

Baculoviruses are important microbial control agents of insects, with per os mode of infectivity. However, recently the spiracular infection of this virus group was suggested as an optimum method for virus production in ...
Host Preference of Xanthopimpla Stemmator (Hymenoptera: Ichneumonidae) and its Reproductive Performance on Selected African Lepidopteran Stem borers

Gitau, C. W.; Ngi-Song, A. J.; Otieno, S. A.; Overholt, W. A. (Taylor & Francis, 2007)

The Asian pupal parasitoid, Xanthopimpla stemmator Thunberg, was imported into East Africa as a classical biological agent of lepidopteran cereal stem borers. Preference of X. stemmator females for four common borers of ...
Field Boundaries of Panicum Maximum as a Reservoir for Predators and a Sink for Chilo partellus

Koji, S.; Khan, Z. R.; Midega, Charles A.O. (Blackwell Verlag, Berlin, 2007)

The biological-control function of field boundaries of Guinea grass, Panicum maximum Jacq. on the spotted stem borer, Chilo partellus Swinhoe was examined as a reservoir for arthropod predators and as a trap plant for the ...
Surveys for Natural Enemies of the Tomato Red Spider Mite Tetranychus evansi (Acari: Tetranychidae) in Northeastern and Southeastern Brazil

Fiaboe, Komi, K. M.; Gondim Jr, M. G. C.; Moraes, G. J. de; Ogol, C. K. P. O.; Knapp, Markus (Magnolia Press, 2007)

Surveys for predators of the tomato red spider mite Tetranychus evansi Baker & Pritchard on solanaceous plants were carried out in north-eastern and south-eastern Brazil to determine prospective species for the control of ...
Differential Expression of the CrV1 Haemocyte Inactivation-associated Polydnavirus gene in the African Maize Stem borer Busseola fusca (Fuller) Parasitized by Two Biotypes of the Endoparasitoid Cotesia sesamiae (Cameron)

Gitau, C. W.; Gundersen-Rindal, D.; Pedroni, M.; Mbugi, P. J.; Dupas, S. (Elsevier, 2007)

Polydnaviruses are rarely studied for their natural variation in immune suppressive abilities. The polydnavirus harboring braconid Cotesia sesamiae, a widespread endoparasitoid of Busseola fusca and Sesamia calamistis in ...
Bionomics of the Acarophagous Ladybird Beetle Stethorus tridens Fed Tetranychus evansi

Fiaboe, K. K. M.; Gondim Jr, M. G. C.; Moraes, G. J. de; Ogol, C. K. P. O.; Knapp, M. (Blackwell Verlag, Berlin, 2007)

The bionomics of Stethorus tridens Gordon fed Tetranychus evansi Baker & Pritchard were studied in the laboratory. The number of prey consumed by S. tridens increased with increasing instar levels and the total mean number ...

Now showing items 1-20 of 516

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