How To Protect Corn Disease

Last winter and spring, high temperatures, rainfall below normal, large favorable overwintering pests, field population density.According to the survey, the current sweet corn is in the jointing to heading stage, the main pests and diseases are corn borer and large and small spot disease.

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First . Pest occurrence.
Corn Borer: According to the survey, the average damage rate of sweet corn strains 4.04% and 9% higher. The average deposit insect 180.68 acres, the current field to 3,4 instar based.

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Large and small spot disease: According to the survey, the average incidence of strains of 6.26%, 13.48% higher; leaves the average incidence rate of 27%, mainly in the lower leaves occur.

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Second, the analysis of trends occur.
According to the Guangzhou international professional weather forecast, Guangzhou May rainfall slightly less 1 to 2 percent, or slightly less normal June 1 to 2 percent in the late late April, mid-May Early, late and early June in mid-late June there will be four major precipitation process.

Third, control advice.
1, the timely removal of pests leaves and debris, and concentrated buried or burned. Well Fitness cultivation, improve plant disease and insect resistance ability.

2. Timely chemical control requires the use of high efficiency, low toxicity and safe agents for prevention and treatment, the rain if the spraying, spraying should promptly fill in the rain.