Volume 57 Number 1

Table of Contents

Research Papers

Randomized blocks and some alternatives: A study in tropical conditions
S.C. Pearce
Studies on the availability to plants of soil nitrogen in Malaysian tropical oligotrophic peat. III–Effects of initial soil air-drying and frequency of watering
W.Y. Chew, C.N. Williams, K. Ramli
A trace element survey of the major soil types in Jamaica
C.C. Weir
The influence of soil fertility on crop performance in Uganda. II- Groundnuts
H.L. Foster
Effects of contrasting aerial environments on yield potential in cowpea (Vigna unguiculata (L.) Walp)
K.A. Stewart, R.J. Summerfield, F.R. Minchin, B.J. Ndunguru
Aspects of natural cross fertilization in sesame (Sesamum indicum L.)
H.A. Van Rheenen
Distribution of dry matter and mineral nutrients in tubers of two cultivars of Dioscorea alata L.
T.U. Ferguson, P.H. Haynes, J.A. Spence
Estimation of leaf area and plant leaf area in vegetative Pennisetum purpureum
R. Ferraris, J.T. Wood
Prediction of digestibility in three tropical grasses
C. Thomas, P.K. Njoroge, J.S. Fenlon
Efficiency of nitrogen utilization by Zebu cows and buffaloes. I.–Nutrient utilization and nitrogen balances on performed protein diets
R.S. Ludri, M.N. Razdan
A note on the digestibility by growing pigs of certain nutrients and energy in maize- or molasses-based diets
J. Ly, P. Lezcano

Book Review

BOOK REVIEW By E.J.D. - Tropical Trees and Forests: An Architectural Analysis
F. Halle, A.A. Oldemann, P.B. Tomlinson