How to treat corn leaf spot?

How to treat corn big spot disease? please brief us on Maize leaf blight is a serious epidemic disease threatening maize production safety in Shangluo. The disease often occurs in summer sown corn and is most harmful. Occurrence characteristics: First, there are significant differences in disease resistance among maize varieties. Zhengda 12, Yuyu 22, Nongda 3138 and Anyu 2166 were highly susceptible to the disease. The other is that the disease of the same susceptible variety is light when it is sown in spring, but serious when sown in summer. Third, in August-September, rainfall is more than low temperature years often cause the disease to spread in large areas. Fourth, in summer drought is heavier, autumn rain more years, thin soil ridge field disease is heavier. Control technology: firstly, select excellent varieties resistant to big spot disease, prohibit Zhengda 12, Yuyu 22, Nongda 3138, Anyu 2166 and other maize varieties with high susceptibility to big spot disease as summer sowing seeds; Second, timely spraying at the early stage of the disease. Available 50% carbendazim 500 times, 70% methyl-Tuo WP 600 times solution, or 70% mancozeb WP 500 times solution and other foliar spray. Every 10 days or so, spray 2-3 times. Click for more corn growing technology Click for more food crop growing technology