Henan Zhumadian Li Changrong, via SMS (156****5972) March 6th Q: Last year, in the local wheat fields, the use of tribenuron, tetracycline sodium, and flufenoxa herbicides were not ideal for weed control. Did not get rid of leeks and sow wormwood, what are the causes and what medicines can be chosen?
Wang Zhen, wheat product manager of Shandong Shengbang Greenfield Chemical Co., Ltd. answered: This should be a problem of weed resistance. At present, from Lubei to Lunan and from Yudong to Yubei, many farmers have reflected this problem. The control effect of the single agent of tribenuron was not very good, resulting in an increase in the sales of bensulfuron, dimethyl tetrachlorine, fluoxyl, and flufenoxa, and the use of 30 grams to 40 grams of dimethyl for each acre. Tetrachlorine, in combination with tribenuron, bensulfuron-methyl, fluoxyl, and flufenoxaone, can exert a weeding effect of 1+1≥2, which will increase the weeding effect.
It should be noted that the use of dimethyl tetrachlorine should pay attention to the influence of wheat's physiological cycle and temperature, otherwise it will easily cause damage to the reproductive organs of wheat, which will lead to a reduction in yield or to an outbreak of production. The safe delimitation interval is the week from the wheat three-leaf stage to the wheat jointing stage, and the temperature is selected to be between 8°C and 28°C. Sulfosulfan can also be chosen, which is itself very safe and insensitive to temperature. The Land Rover and the Greenfield Mauling have significant effects on resistant broad-leaved weeds in the wheat field. In particular, the combination of contact and sucking by the Land Rover Extinction version is a quick and thorough weed control.
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