| Twenty-two kinds of herbicides in low and high (twice) dosage were selected to conduct quantitative spray
treatment on stem and leaf of pot Duranta repens cv., then the inhibition rate of D. repens cv. and the efficiency of controlling
dodder were investigated 30 d later. The results showed that the inhibition rate of D. repens cv. was lower than 20% while the
efficiency of controlling dodder was higher than 80% by using 30, 60 mg/L 6% tusite AS, 364 mg/L 41% glyphosate
isopropylamine AS and 28 mg/L 10% bispyribac-sodium SC, of which the efficiency was high and the phytotoxicity could be
accepted; on the other hand, the inhibition rate of D. repens cv. was 20.37%~100% while the efficiency of controlling dodder
was 80.36%~100% by using 56 mg/L 10% bispyribac-sodium SC, 618 mg/L 21.4% acifluorfen EC, 729 mg/L 41% glyphosate
isopropylamine AS, 374, 746 mg/L 56% 2-MCPA-Na WP, 427 mg/L 48% dicamba AS, 178, 356 mg/L 20% fluroxypyr EC, 1
111, 2 222 mg/L 50% tebuthiuron SC, 1 000, 2 000mg/L 90% hexazinaone WP, of which efficiency was high but the
phytotoxicity was serious; besides, the inhibition rate was lower than 37.73% while the efficiency was lower than 74% by
using other herbicides. Based on the principles of efficiency and safety, the herbicide with inhibition rate lower than 20% and
efficiency higher than 80% were as follows: 60, 30 mg/L 6% dodder AS, 364 mg/L 41% glyphosate isopropylamine AS and 28
mg/L 10% bispyribac-sodium SC, and the comprehensive values were 81.68, 80.74, 80.03, 63.69 respectively. So they were
safe and efficient herbicides for controlling D. repens cv. dodder |
