What specific fungicides work well for controlling northern corn leaf blight?

Northern corn leaf blight affects the normal growth and development of corn, causing a reduction in corn yield. So what specific fungicides are there for northern corn leaf blight? How should northern corn leaf blight be controlled?

1. Specific fungicides for northern corn leaf blight

For high-yield field corn, at the tasseling stage or in the early stage of the disease, use 10% difenoconazole, 70% mancozeb, 50% thiram, 70% copper hydroxide, 50% carbendazim, or 70% thiophanate-methyl combined with high-grade lipid film and spray continuously 2-3 times, with an interval of 7-10 days between each spray.

2. Causes of northern corn leaf blight

Affected by factors such as frequent rainfall from mid-to-late July to early August, relatively low temperatures, and high field humidity, northern corn leaf blight has shown an epidemic trend. According to the patterns of disease and pest spread, from early August to early September, after corn tasseling, pollen scattered on the leaves is conducive to the germination of northern corn leaf blight pathogen spores.

3. Control methods for northern corn leaf blight

1. Choose disease-resistant varieties. Select disease-resistant varieties according to the locally dominant races, pay attention to preventing changes and spread of other races, and choose varieties with different resistance and varieties with combined resistance. The specific variety selection can be comprehensively analyzed according to the local climate and specific conditions, and should not be generalized, so as not to affect agricultural production.

2. Do a good job in agricultural control, sow early at the appropriate time, and avoid the peak period of disease occurrence. Apply sufficient base fertilizer and increase the application of phosphorus and potassium fertilizers. Do a good job in intertillage, weeding, and hilling, remove the bottom 2-3 leaves, reduce the relative humidity in the field, make the plants robust, and improve disease resistance. After corn harvest, clean the field, treat the straw in a centralized manner, and use it as compost after high-temperature fermentation. Implement crop rotation.

Northern corn leaf blight must be controlled in a timely manner, and control work must be done well, so as not to affect the growth and yield of corn. I hope this can help you better grow corn and make corn higher-yielding.