How to use herbicides in sesame fields in summer?

How to use herbicides in sesame fields in summer? Please introduce the weeding of sesame field in summer can refer to the following methods: first, soil closure treatment before seedling after sowing. After sowing sesame seeds are sprayed evenly with 50% Acetochlor EC 100 ml or Dur (72% Metolachlor EC) 200 ml plus 50 kg water per mu, which can control many kinds of annual grass weeds, such as Setaria mandshurica, Magnolia mandshurica, sesame grass, and so on. It also has a certain control effect on a variety of broad-leaf weeds propagated by small seeds. Keep the soil moist after the medicine, and it is not suitable to plough and loosen the soil within 50 days, so as not to destroy the soil layer. Second, skillfully use sterilized herbicides. Weeds in Xia Zhi sesame field generally emerge 3-10 days earlier than sesame, and grow rapidly. You can make full use of the period before sesame emergence, use paraquat to control unearthed weeds, using 20% paraquat water agent 200 ml per mu plus 40 kg of water spray. The herbicide is a contact-killing herbicide, which can be quickly absorbed by plant leaves, so that photosynthesis and chlorophyll synthesis are quickly terminated. The leaves begin to change color 2-3 hours after administration, but can not be transmitted, so only part of the drug can be damaged. Drug contact with soil, passivation failure, no residue, no effect on sesame seedling emergence. Third, use selective herbicides after seedlings. After sesame emergence, weeds in the 2-3 leaf stage can be sprayed with 70-100 ml of fine grass (5% quizalofop EC) per mu or 50 ml (15% PYF EC) plus 40 kg of water per mu. The weeds appeared the symptoms of heart leaf withering and browning in 4-5 days, and the whole plant died 7-8 days later. The weeds mainly controlled the annual weeds such as wild oat, horse tang, sage grass, Euphorbia angustifolia and Euphorbia paniculata. Click to get more sesame planting techniques click to get more food crop planting techniques