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Virus diseases cause substantial yield reduction in cowpea ( Vigna unguiculata (L.) Walp) production in West and Central Africa. Improved cowpea cultivars have been developed and distributed to various national programs but these cultivars were tested only against local virus isolates. To identif...
Huit virus ont ete signrues sur Ie niebe en Afrique. Les virus du niebe sont decrits pour les basses terres hum ides et subhumides de I'Afrique occidentale ainsi que pour les wnes ecologiques d'rutitude moyenne en Mrique orientale et australe. Chaque fois que les installations sont limitees et qu...
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...
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