CONTENTS

Effects of Pectinase, Cellulase and Nutrient Addition on Fermentation of Sweet Potato Mashes

Richard N. McArdle and John C. Bouwkamp

Effect of Stem and Foliage Scab Disease on the Growth and Yield of VSP-1 Sweet Potato Variety

Josefina C. Nayga and Ruben M. Gapasin

Evaluation of Physio-Chemical Properties of Cocoyam (Xanthosoma) Flour

Roberta Dizon-Lauzon, Roger Roy P. Garana and Linda B. Mabesa

Evaluation of Five Insecticides against the Black Leafhopper (Ricania speculum Walker) Attacking Patola [Luffa cylindrical (L.) Roem]

Ma. Teofila O. Oben. Andrea C. Matarong and Nelson M. Esguerra

Rhizosphere and Rhizoplane Microflora of Coffee Seedling as Influenced by Collar Rot and by Seed Pre-treatment

P. Venkatasubbaiah and K.M. Safeeulla

Transitivity of Consumer Preference: A Comparison between Categories of Selected Variables

Marciano T. Sacay and Jose M. Alkuino, Jr