EN

Abstract

This study was aimed to assess weed species diversity and composition in cassava monoculture at Crop and Soil Sciences Department research field, Kwame Nkrumah University of Science and Technology, Kumasi. The experimental design was a randomised complete block design and replicated four times. The treatment factors were six weeding methods (Butachlor (4L/ha) + 2 hoe-weedings, Terbulor (4L/ha) + 2 hoe-weedings, three hoe weedings, three cutlass weedings, weed-free and weedy check) and two cassava varieties (Ampong and Dokuduade). Twenty-five weed species belonging to twelve different families were recorded and overall weed flora was composed of 80% broad-leaved weeds, 12% kinds of grass and 8% sedges. The results revealed that Cyperus rotundus, Spigelia anthelma and Panicum maximum were the three dominant and major weed species. Panicum maximum recorded the highest relative frequency while Spigelia anthelma and Cyperus rotundus showed higher values of relative density, relative abundance and important value index under both varieties.