The methods of pesticide application for the control of different pests in maize are very different

Since the beginning of summer, the temperature of jiluyu rainfall has been rising, and summer-sown corn has been plagued by drought while also being infested by a variety of insect pests.

Thrips have always been a rampant pest on corn this year, if you do not control this seemingly inconspicuous pest in time, the light corn top leaf is not easy to unfold and curl or shrink, the heavy will lead to the occurrence of top rot; the second point of the night moth, this year is more serious, from the base of the corn stem close to the ground part of the drill into the corn plant, light corn crooked long, heavy is dry heart; beet night moth, yellow-green or dark green insect body, in the heart of the corn while eating leaf flesh while excreting feces, corn is very injured; heteromechanical firefly leaf beet, Adults nibble on the epidermis on the leaves, forming white holes. The larvae drill into the corn seedlings from the stem base near the ground to form dry heart seedlings; the malt root bugs, with nymphs to suck the corn nutrients, the aboveground part of the seedlings appear seedlings, plant dwarfs and green dead panicles, reducing yields by 20% to 30% or pointing out harvest.

For the above pests, if it is found to be serious, it is necessary to seize the time to spray control. When spraying, you need to pay attention to the selection and use of the agent.

For thrips, the use of thiamethoxine or acetamiprid compound pyrethroids and zinc fertilizer focus on the heart; for beet moths, cotton bollworms and other lepidopteran pests, the choice of methyl vitamin salts or chlorhexabene benzamide plus permethrins or organophosphorus is also the focus of the heart; as for the two-point nocturnal moth, the choice of agent is the same as above, but the method of medication is different, you should first pull the wheat bran around the seedlings to the row, and the sprinkler head is aimed at the seedlings to spray the liquid to the base of the stem; for the heteromechanter firefly and wheat root bugs, Choose thiamethoxine or imidacloprid compound chlorpyrifos or avermectin and remove the nozzle irrigation roots. In addition, it should be noted that if there is an organophosphorus insecticide in the formula, at least one week apart before spraying the herbicide after the seedling, or one week after the spray of the herbicide. Zhao Zhanzhou