Volume 50 Number 4

Table of Contents

Research Papers

Effect of irrigation on the yield and physiological behaviour of mature Amelonado cocoa in Ghana
W.V. Hucheon, R.W. Smith, E.J.A. Asomaning
Digitaria collection from southern Africa
A.J. Oakes
Staking trials with sweet potatoes
D.E. Gollifer
Continuous cropping in areas of shifting cultivation in the southern Sudan
M. Osman Abu-Zeid
Methods of increasing the germination percentage of some tropical legumes
R.H. Phipps
Phosphorus and potassium penetrability in the soil and their influence in a mature banana plantation
E. Lahav
Transport of papaya fruits from Trinidad to Britain
G.R. Lee
Evaluation of chemical ripeners for sugar-cane having constant nitrogen and water regimes. II-Superior activity of C.P. 41845 (Monsanto)
A.G. Alexander, R. Montalvo-Zapata
Tropical poultry house design-its effect on health and production under intensive conditions
C. Van Dijk, B. Vickery
Supplementary feeding of dairy cows in early lactation
R.H. Phipps
Association of virus-like particles with internal brown spot of yam (Dioscorea alata)
B.D. Harrison, I.M. Roberts

Research Notes

Rooting of detached vigna sinensis leaves for use in physiological studies
L.A. Wilson
Quantitative morphogenesis of root types in the sweet potato [Ipomoea batatas (L.) Lam.] root system during early growth from stem cuttings
L.A. Wilson, S.B. Lowe
Estimation of leaf area in papaya (Carica papaya) from leaf measurements
S.K. Karikari
A close planting trial with tung (Aleurites montana)
D. Spurling, A.T. Spurling

Book Review

BOOK REVIEW By R.F.B. - Banana Diseases Including Plantains and Abaca
C.W. Wardlaw
BOOK REVIEW By C.E.M. - Agricultural Marketing in Africa
Edith H. Whetham
BOOK REVIEW By E.A.T. - Rapeseed
L.A. Appelqvist, R. Ohlson
BOOK REVIEW By C.R.M. - Sugarcane Physiology
A.G. Alexander
BOOK REVIEW By R.E.P. - Rice Diseases
S.H. Ou
BOOK REVIEW By E.A.T. - The Green Revolution in West Pakistan
Leslie Nulty