Yao Songhua, Changpu Town, Susong, Anhui, through text message (139****6560) July 21 asked: Sesame land in the broad-leaved weeds more, what kind of medicine control effect is good? Thank you! According to Liu Zhengjia, manager of cash crop products of Shandong Shengbang Greenfield Chemical Co., Ltd.: Sesame is a dicotyledonous plant, and the seeds are small and the cover soil is relatively shallow at the time of sowing. Therefore, herbicides must be selected so as to avoid phytotoxicity. In addition to Sesame Field, there are two ways: First, pre-emergence medication after sowing; Second, post-emergence weeds out. Pre-emergence closure: In addition, due to the small sesame seeds and the shallow sowing, many varieties of herbicides are susceptible to phytotoxicity on sesame seeds. At the same time, when applying pesticides, attention should be paid to the weather forecast. If there is continuous low-temperature and high-temperature conditions in the fields such as rainfall and temperature drop, it is also prone to phytotoxicity; because the strategy for sesame weed control is mainly to control the early stage weed damage, and the middle and late stages of the sesame field are covered by high-density dense vegetation. Sesame seeds in the middle and late period have better grass control, so the amount of herbicide in the field should not be too high. Within 3 days after sesame sowing, mu was used to spray 70-120 ml of 96% metolachlor or 48% of alachlor EC 200-250 ml, diluted with 30 kg of water and sprayed evenly on the surface. Soil mass or soil organic matter rich fields, should increase the dosage. 33% Pendimethalin EC can be sprayed uniformly with 100-150 ml/mu and 30 kg of water, which can effectively control various annual grasses and weeds, pupa, and ramie broadleaf weeds. Alum and shovel also have certain control effects. When applying pesticides, it is necessary to adjust the dosage according to the conditions, and avoid applying too much. In the production, the pesticide should be applied uniformly. It should be tested and compared first, otherwise it is prone to phytotoxicity. In addition, some farmers' friends in the production use acetochlor for pre-emergence use. As a result, most of them have phytotoxicity, causing no emergence or deforestation. However, there are a few successful use, and the successful measure is to plant seedlings with a thick cover (1 cm or more). In general, it cannot be promoted. It is an unsafe agent. Post-emergence chemical removal technology: For early failed to adopt effective weed control measures, chemical weeding should be performed in the post-emergence period. The application period should be before the sesame seal line, weed 3-5 leaf stage, with 10% quizaloprene EC 20-30 ml/mu, 10.8% high-efficiency chlorofluoropyrene emulsion 20 ml/mu, 15% arginine Fluoxetine EC 50-75 ml/mu, 12.5% ​​cinnamizole oil 50-75 ml/mu, 24% clethodim 10-20 ml/mu, add water 25-30 kg/mu compound liquid selection After the rain is clear and sunny, or when there is late dew, sprinkle water. When the soil is dry, the amount of diluted water should be increased to improve the efficacy. These herbicides can be used to control grassy weeds and are basically ineffective against broadleaf weeds. The soil moisture is suitable and the weeds have a good control effect when they grow. At present, there is no safe agent for controlling broad-leaved weeds after post-seedling stems and leaves of sesame. For example, broad-leaved weeds in the field should be treated with early soil sealing. Regardless of the control of grassy weeds or broad-leaved weeds, the following points should be observed in the application process: First, soil moisture should be sufficient, and the amount of pesticide should be increased when the soil moisture is poor; second, the field of soil viscous weight should be increased appropriately. The amount of medication; the third is to control stems and leaves weeds, to choose in the 3-5 leaf stage, the longer the seedling age but also to increase the amount of drug; Fourth, sesame field application of technical requirements are higher, all applicable drugs need to go through a small test Promotion. Buckwheat Flours,Roasted Buckwheat Powder,Tartary Buckwheat Flour,Roasted Buckwheat Huantai Biotechnology Co., Ltd. , https://www.huantaifds.com