Weed Emergence in Upland Field of Summer Crop Cultivation in Honam Area

In order to get basic information for an effective control method of weed in upland fields, a weed survey was conducted in the southwest region of Korea in 2002. A total of 102 species of 29 families was collected in the upland fields of all summer crops, and grasses were 25% in dominance. In the soybean fields, 43 species of 20 families was collected, and grasses weeds 30% in dominance. The dominance indexes were high in the order of Digitaria ciliaris, Portulaca oleracea and Cyperus amuricus. In the sesame fields, 38 species of 18 families was collected, and the dominance of Portulaca oleracea was 26%. The dominance indexes were high in the order of Portulaca oleracea, Digitaria ciliaris and Cyperus amuricus. In the red pepper fields, 48 species of 15 families was collected, and the dominance of Digitaria ciliaris was 30%. The dominance indexes were high in the order of Digitaria ciliaris, Portulaca oleracea and Cyperus amuricus. In the ginger fields, 90 species of 26 families was collected, and grasses were most dominated as 23%.