M. I. Galinato and Percy E. Sajise
ABSTRACT
Different root crop-growing areas in the Philippines were surveyed during the net season to determine the weed species associated with different root and tubes crops, namely, sweet potato, cassava, yam and white potato. Wet season quantitative vegetation analysis of weed species associated with root crops in the Philippines has shown the existence of 8 weed community types, namely: Cyperus rotundus, Paspalum conjugatum, Ageratina adenophora, Pennisetum polystachyon. Digitaria sanguinalis, Dactyloctenium aegyptium, Eragrostis tenalila, Desmodium triflorium. A total of 70 weed species was encountered in the quantitative vegetation analysis. Some environmental factors such as pH, climatic type, soil type, weed control practices and elevation were determined to explain the community patterns.
Keywords: Weed flora. Weed community types. Root crops. Sampling Ecological survey. Philippines.
Annals of Tropical Research 3 (3):(1981)
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