Subject: Yam
324. Production and distribution of virus-free yam (Dioscorea rotundata Poir.)
S. Y. C. Ng
329. Carbon source requirement for the culture of white yam (Dioscorea rotundata) embryos in vitro.
C. E. A. Okezie, S. N. C. Okonkwo, and F. I. O. Nwoke
335. Determination of optimum sett size for white guinea yam (Dioscorea rotundata Poir) seed yam production: trends in sprouting in the presprout nursery and field performance.
C. E. Gyansa-Ameyaw, S. K. Hahn, N. M. Alvarez, and E. V. Doku
342. Manipulation of cultural factors to increase microtuber size and frequency in shoot cultures of food yam, Dioscorea alata L. cv. Oriental Lisbon.
A. Y. Alhassan and S. H. Mantell
349. The response of yam (Dioscorea rotundata Poir.) to various periods of weed esculentus L. Moench), and sweet potato (Ipomoea batatas L. Lam).
G. C. Orkwor, O. U. Okereke, F. O. C. Ezedinma, S. K. Hahn, H. C. Ezumah, and I. O. Akobundu
349. Prospects and constraints to yam production in Ghana.
J. P. Tetteh and C. Saakwa
360. The suitability of Gliricidia sepium in-situ stake on the yield and performance of white yam (Dioscorea rotundata)
O. I. Out and A. A. Agboola.
367. An economic examination of constraints and opportunities in yam (Dioscorea spp.) production in Fako Division, Cameroon.
E. T. Acquah and N.W. Evange
378. The economics of yam (Dioscorea spp.) production in Cameroon: the case of Fako Division. 373 Economics of seed yam production from minisetts in Umudike in southeastern Nigeria : Implications for commercial growers.
N. O. A. Ezeh
382. Yam for foreign exchange: potentials and prospects in Ghana.
S. Asuming-Brempong