Specific medicine for corn leaf spot
Maize leaf blight can affect the normal growth and development of maize, resulting in maize yield reduction. So what are the specific drugs for corn big leaf spot disease? How to control corn big leaf spot?
1. Specific medicine for corn leaf spot disease
10% difenoconazole, 70% mancozeb, 50% thiram, 70% copper hydroxide, 50% carbendazim, 70% thiophanate-methyl combined with new lipid membrane can be sprayed continuously for 2-3 times at the tasseling stage or the initial stage of disease in high-yield corn fields, and the interval between each spraying is 7-10 days.
II. Causes of occurrence of maize big leaf spot
Affected by frequent rainfall, low temperature and high field humidity from mid-late July to early August, maize big leaf spot showed epidemic trend. From early August to early September, pollen scattered on maize leaves was beneficial to spore germination of northern leaf blight pathogen after tasseling.
III. Control methods of corn big leaf spot
1. Selection of disease-resistant varieties Select disease-resistant varieties according to local dominant races, pay attention to preventing the change and spread of other races, and select different resistant varieties and resistant varieties. Specific varieties can be selected according to the local climate and specific conditions to comprehensive analysis, can not be generalized, so as not to affect agricultural production.
2. Do a good job in agricultural prevention and control, sow early at appropriate time, and avoid the peak of disease occurrence. Apply sufficient base fertilizer and increase phosphorus and potassium fertilizer. Do a good job of cultivating, weeding and cultivating soil, remove 2-3 leaves at the bottom, reduce the relative humidity in the field, make the plants strong and improve disease resistance. After corn harvest, clean field, straw centralized treatment, high temperature fermentation used as compost. Crop rotation.
Corn big leaf spot must be timely control, do a good job of prevention and control, so as not to affect the growth and yield of corn. Hopefully this will help you grow corn better and make it more productive.
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