The infestation of weed species and their integrated management in watermelon fields in China
Weed was one of the important harmful organisms in watermelon fields.The initial investigation showed that there were 137 weed species in watermelon growing regions in China,which belonged to 34 families,and 87 species with more than 5％in frequency in the quadrat samples belonging to 26 families among them.The critical period of interference between weeds and watermelon for weed control was 20-30 days after watermelon transplanting.There were 7 effective ingredients of herbicides registered in watermelon fields,among them,S-metolachlor,metolachlor,napropamide and butralin were used for soil application and quizalofop-P-ethyl,haloxyfop-P-methyl and propaquizafop were used for foliar application providing good control efficacies on grass weeds.Weed control in watermelon fields should follow the integrated management strategy(IPM)under good agricultural practices,combining the measures such as plant quarantine,cultural control,and ecological control with herbicides.
万方数据
维普
