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Koona, P.Bakoume, C.David, S.Mva Mva, J.[Learning about sustainable oil palm production: a guide for training smallscale farmers in West and Central Africa]Learning about sustainable oil palm production: a guide for training smallscale farmers in West and Central Africa

Potted cowpea, Vigna unguiculata (L.) Walp., plants were used to determine the effects of defoliation and pod position relative to the leaf canopy on infestation and damage by the coreid pod-bugs Clavigralla tomentosicollis Stål and Anoplocnemis curvipes (F.). Temperature measurements were taken ...


Koona, P.Osisanya, E.Jackai, L.E.N.Tonye, J.[Infestation and damage by Clavigralla tomentosicollis and Anoplocnemis curvipes (Hemiptera: Coreidae) in cowpea plants with modified leaf structure and pods in different positions relative to the canopy]Infestation and damage by Clavigralla tomentosicollis and Anoplocnemis curvipes (Hemiptera: Coreidae) in cowpea plants with modified leaf structure and pods in different positions relative to the canopy

Studies were conducted at the advance pathology laboratory and glasshouse at the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria, to determine the inoculums threshold of fungal suspensions at different concentration levels, and also to investigate latent infection of cassa...


Fokunang, C.N.Akem, C.Ikotun, T.Tembe-Fokunang, E.A.Koona, P.Dixon, A.[Investigation of inoculum threshold and latent infection in Colletotrichum gloeosporiodes f. sp. manihotis in cassava cultivars]Investigation of inoculum threshold and latent infection in Colletotrichum gloeosporiodes f. sp. manihotis in cassava cultivars

Studies were conducted in the laboratory to investigate the different components of the resistance of Vigna vexillata A. Richards, TVnu 72, and several cultivars of cultivated Vigna spp. to infestation and damage by the brown cowpea coreid, Clavigralla tomentosicollis Stäl. The main objective was...


Jackai, L.E.N.Nokoe, S.Tayo, B.O.Koona, P.[Inferences on pod wall and seed defenses against the brown cowpea coreid bug, Clavigralla tometosicollis Stal ( Hempptera Coreidae) in wild and cultivated Vigna species]Inferences on pod wall and seed defenses against the brown cowpea coreid bug, Clavigralla tometosicollis Stal ( Hempptera Coreidae) in wild and cultivated Vigna species

Two shaving methods, one by using a sharp razor blade and the other a small pair of dissecting scissors, were tested on pods of Vigna vexillata accessions to investigate the effect of trichomes on feeding and development of the pod-bug Clavigralla tomentosicollis Stål (Hemiptera: Coreidae). Elect...


Koona, P.Jackai, L.E.N.[The potential of podshaving in studies of the role of trichomes in Vigna resistance to the podbug Clavigralla tomentosicollis Stal (Hemiptera: Coreidae)]The potential of podshaving in studies of the role of trichomes in Vigna resistance to the podbug Clavigralla tomentosicollis Stal (Hemiptera: Coreidae)

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