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Treatment with indolebutyric acid (IBA) significantly increased the number of roots produced by vine cuttings of ten Dioscorea rotundata cultivars. Some cultivars could be propagated by layering, especially with IBA treatment, but layering does not appear to be feasible for use on farms.
New seed yam systems from minisetts, minitubers and vine cuttings have been developed for yam production to supplant the traditional systems, which have proven inefficient and costly. The new techniques provide producers in tropical countries with the opportunity to minimize production costs, red...
Seed yams are an essential input into the Dioscorea yam economy of West Africa. Till date, the agronomic separation of seed yam production from that of ware tuber production for food has not been fully achieved. ‘Milking’ of food tubers to get seed yam continues as a dominant channel of seed yam ...
L'igname est une importante denree alimen• tajre surtout dans sa zone de production en Afrique occi• dentale. La production mondiale totale d'igname est d'environ 20 A 25 miIlions de tonnes par an et 70 % d. ce total provient du Nigeria. Bien que consideree comme une denree particulierement riche...
Yam is an important food crop, especially in the ‘yam zone' of West Africa. Total world production is about 20-25 million ton per annum, some 70 per cent of it grown in Nigeria. Although regarded mainly as a source of carbohydrate, some species are nearly as rich in protein as rice or maize.
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