Screening Of Herbicides In Safe And Efficient Green Bean Field

The problem of chemical weeding has not been a good solution in the production of mung beans. For this reason, need the research on the safe and efficient weeding control techniques of mung beans. This test researched the effects on the security, herbicidal effects, the yield of mung beans using 9 kinds of soil treatment by herbicides and 8 kinds of foliar treatment by herbicidal. Filter the safe and efficient herbicides in the field of mung beans with the method of field trials.The results are as follows:1. Spraying 1500~3000 g/hm2 of 50% prometryn WP, 75~1500 m L/hm2 of 48% colmazone EC, 30~37.5 g/hm2 of 75% thifensulfuron-methy WDG, 1500~2250 m L/hm2 of 25% romesafen AS can improve the germination rate.2. 50% prometryn WP, 25% romesafen AS and 75% thifensulfuron-methy WDG by soil treatment in the test dose was high security and not overt injury for mung beans.3. The control efficiency of broad-leaved weeds: The efficacy of spraying 1200 g/hm2 of 70% metribuzin WP, 2250 m L/hm2 of 25% romesafen AS was best. The control efficiency of grass weeds: The efficacy of spraying 750~1500 g/hm2 of 50% quinclorac WP was better.4. The yield of mung beans increased by spraying 25% romesafen AS and 1500 m L/hm2 of 48% colmazone EC. The yield of green beans by spraying 1125 m L/hm2 of 48% colmazone EC was highest and the yield of mung beans increased 10.49%. The yield of mung beans by spraying 1500 m L/hm2 of 48% colmazone EC was the second highest and the yield of green beans increased 7.68%. The yield of mung beans by spraying 1500 m L/hm2 of 25% romesafen AS was third highest and the yield of mung beans increased 4.19%. The yield of mung beans reduced by spraying 50% prometryn WP, 12% oxadiazon EC, 33% pendimethali EC, 50% quinclorac WP, 75% thifensulfuron-methy WDG.5. 30% clethodim EC by foliar treatment in the test dose was high security and not overt injury for mung beans.6. The test surveyed the control efficiency of plant and dry weight at 30 days after spraying by foliar treatment. The efficacy of spraying 45.0 g/hm2 of 75% thifensulfuron-methy WDG on the control efficiency of broad-leaved weeds was some. The efficacy of spraying 750~1500 m L/hm2 of 30% clethodim EC and 1500 g/hm2 of 50% quinclora WP on the control efficiency of grass weeds was best.7. The yield of mung beans increased by spraying 30% clethodim EC, 50% prometryn WP and 50% quinclorac WP by foliar treatment. The yield of mung beans by spraying 750 m L/hm2 of 30% clethodim EC was highest and the yield of mung beans increased 36.90%. The yield of mung beans by spraying 750 g/hm2 of 50% quinclorac WP was the second highest. The yield of mung beans by spraying 1500 m L/hm2 of 30% clethodim EC was third highest. The yield of mung beans reduced by spraying 12% oxadiazon EC, 48% colmazone EC and 75% thifensulfuron-methy WDG.In conclusion: Spraying 1125~1500 m L/hm2 of 48% colmazone EC and 1500 m L/hm2 of 25% romesafen AS by soil treatment in the field of mung beans, 750~1500 m L/hm2 of 30% clethodim EC by foliar treatment in the field of mung beans was security, having good herbicidal effects and increasing the yield of mung beans.