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Maize is the most important cereal in sub-Saharan Africa. It is relatively inexpensive and provides many families with much-needed nutrients. For the farmers, it matures early and Is a source of ready income. Maize production Is being threatened by some diseases and pests, among which are downy m...


Kling, J.G.Cardwell, K.F.Bosque Pérez, N.A.Kim, S.K.[Advances in screening methods and breeding for resistance to downy mildew and stem borers in maize]Advances in screening methods and breeding for resistance to downy mildew and stem borers in maize

Maize streak geminivirus (MSV) isolates originating from maize, other cerealsand 18 grass species in Nigeria were characterized based on symptoms, transmission, host range and serological tests. All isolates could be transmitted to MSV-susceptible sweet corn cv. Golden Bantam using Cicadulina sto...


Mesfin, T.Bosque Pérez, N.A.Buddenhagen, I.W.Thottappilly, G.Oloyede, S.O.[Studies of maize streak virus isolates from grass and cereal hosts in Nigeria]Studies of maize streak virus isolates from grass and cereal hosts in Nigeria

Oviposition and development of Sitophilus zeamais Motschulsky were studied on shelled maize kernels and unshelled cobs of the variety “Blanc Deux Precoce” from the Republic of Benin. On unshelled cobs adult weevils must feed and oviposit mostly on the kernel's crown, the only part of the kernel f...


Kossou, D.K.Bosque Pérez, N.A.Mareck, J.H.[Effects of shelling maize cobs on the oviposition and development Sitophilus zeamais Motschulsky]Effects of shelling maize cobs on the oviposition and development Sitophilus zeamais Motschulsky

Damage and losses to stored maize in Africa are often severe. Storage pests of an area have to be identified to determine whether they merit control and to choose appropriate control methods. Know ledge of the biology of pests and of factors influencing preharvest and postharvest infeststion is i...


Kossou, D.K.Bosque Pérez, N.A.[Insect pests of maize in storage: biology and control]Insect pests of maize in storage: biology and control

The spatial distribution of five lepidopterous pests, Sesamia calamistis Hampson (Noctuidae), Eldana saccharina Walker (Pyralidae), Spodoptera exempta (Walker) (Noctuidae), Mussidia nigrivenella (Ragonot) (Pyralidae), and Cryptophlebia leucotreta (Meyrick) (Tortricidae), on maize in West Africa i...


Schulthess, F.Bosque Pérez, N.A.Gounou, S.[Sampling lepidopterous pests on maize in West Africa]Sampling lepidopterous pests on maize in West Africa

The distribution and species composition of lepidopterous maize borers was studied in six locations in southern Nigeria during the second planting season (August-November) of 1985 and 1986. Sesamia calamistis Hampson (Noctuidae) and Eldana saccharina Walker (Pyralidae) were the stem borers most a...


Bosque Pérez, N.A.Mareck, J.H.[Distribution and species composition of lepidopterous maize borers in southern Nigeria]Distribution and species composition of lepidopterous maize borers in southern Nigeria

The survivorship, fecundity and development time (egg to adult) of Cicadulina storeyi China, C. arachidis China and C. ghaurii Dabrowski were studied at three constant temperatures (20, 25 and 30 .C). Additional tests were conducted to descriptionbe maize streak virus (MSV) transmission by C. ara...


Asanzi, M.C.Bosque Pérez, N.A.Nault, L.R.Gordon, D.T.Thottappilly, G.[Biology of Cicadulina species (Homoptera: Cicadellidae) and transmission of maize streak virus]Biology of Cicadulina species (Homoptera: Cicadellidae) and transmission of maize streak virus

Apres Ie groupe des pu ce rons , c'est Ie groupe des cicadelles qui cornporte Ie plus grand n ornbr e de vecteurs de virus. Les especes de Cicadulina se rencon• trent da ns les regions tropicales et chaudes du rnonde; elles sont, pour la plupart, d'origine africaine. Le virus de la Stl iure du rn...


Mesfin, T.Bosque Pérez, N.A.[Les cicadelles et le virus de la striure du mais (MSV): Guide de recherche de lIita, No. 38]Les cicadelles et le virus de la striure du mais (MSV): Guide de recherche de lIita, No. 38

The effects of maize variety and storage form on development of the maize weevil, Sitophilus zeamais Motschulsky, were studied under artificial infestation at 25 ± 2 °C and 70 ± 5% r.h. in the laboratory. Three improved West African maize varieties, Abeleehi, EV8725-SR, Pop63-SR and the local var...


Vowotor, K.A.Bosque Pérez, N.A.Ayertey, J.[Effect of maize variety and storage form on oviposition and development of the maize weevil, Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae)]Effect of maize variety and storage form on oviposition and development of the maize weevil, Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae)

Seven viruses are known on maize in tropical Africa, however, information is still scanty. MSV is widely distributed in sub-Saharan Africa; other viruses are less widely spread or only of local importance. Information on viruses and virus diseases is useful to plant breeders in setting priorities...


Thottappilly, G.Rossel, H.W.Bosque Pérez, N.A.[Viruses and virus diseases of maize in tropical Africa]Viruses and virus diseases of maize in tropical Africa

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