What should I do if corn rust occurs? What are the causes of corn rust and how to control it?

Corn rust is one of the most common pests and diseases during the growing season of corn. Symptoms usually occur in the middle of growth. It will cause the leaves to turn yellow and affect the yield. Timely intervention is required.

It may be that there are pests and diseases, it may be affected by the weather, it may be that it is infected by bacteria, and it is necessary to apply fertilizer in a balanced manner, and different agents should be selected according to the concentration.

It is possible that there are pests and diseases, it may be infected by pathogens, to choose the right seeds, we must strengthen field management, choose the right time to sow seeds, and should supplement fertilizer in time.

1. First of all, rust is transmitted to our north from the south with the monsoon, and it is generally serious in August every year when the humidity is high. Moreover, if there is a rust in the plot that year, the spores of the fungus will overwinter in the soil, which will affect our wheat for the next year.

2. For rust, the most suitable temperature is between 20 degrees Celsius and 30 degrees Celsius, and the relative humidity in the field is about 90%, which is the most likely to occur in the case of special moisture.

3. Under normal circumstances, corn rust mostly occurs in plots with excessive corn planting density, no rational chemical control, and excessive nitrogen fertilizer application.

4. I don't want to introduce too much about the symptoms of rust, and the people who farm the land basically know that the leaves are rust-colored and there are yellow-brown spores on them.

In fact, the above is to make us clear that in the prevention and control of rust, we should prevent it in advance, and ask us to try to do a good job in the corresponding field management even if we can't change the weather, so as to deal with a variety of corn diseases in a comprehensive way. So for corn rust, we can start from the following aspects.

Summary. Hello dear, corn rust prevention and control methods 1, the selection of resistant varieties for the prevention and control of rust, growers in the purchase of corn seeds, should read the instructions carefully, or specially consult the owner of the agricultural store, especially in the rust re-occurrence area, rust resistant varieties are the first choice, followed by the rust resistant varieties, not rust resistant or even high rust varieties as far as possible not planted. 2. When sowing, seed dressing can be targeted before sowing for areas with serious rust disease.

The seed dressing agent can choose 10 grams of 2% rick rust wettable powder or 12 grams of 25% powder rust rather wettable powder, and the corresponding seed dressing amount is 10 kg. 3. Early prevention work in rust-prone areas, growers can choose to apply pesticides in the field while they can still enter the field during the corn trumpet period, and some fungicides to prevent rust can be sprayed, and the current ideal fungicide formulas for the prevention and control of rust are: tebuconazole + oximetrobin, difenoconazole + propiconazole + etherstrobin, fluconazole + pyraclostrobin, difenoconazole + azoxystrobin + grambacterium, etc.

4. Strengthen field management to prevent the occurrence of rust, to be reasonable dense planting, corn reasonable dense planting can increase yield, in the fertilization management, in accordance with the requirements of corn growth and development, reasonable ratio of nitrogen, phosphorus and potassium, increase phosphorus, potassium fertilizer, by enhancing the plant's own resistance to stress to reduce the occurrence of rust.

Is it corn rust? How to treat.

What medicine is used for corn rust?

Hello dear, corn rust prevention and control methods 1, the selection of resistant varieties for the prevention and control of rust, growers in the purchase of corn seeds, should read the instructions carefully, or specially consult the owner of the agricultural store, especially in the rust re-occurrence area, rust resistant varieties are the first choice, followed by the rust resistant varieties, not rust resistant or even high rust varieties as far as possible not planted. 2. When sowing, seed dressing can be targeted before sowing for areas with serious rust disease. The seed dressing agent can choose 10 grams of 2% rick rust wettable powder or 12 grams of 25% powder rust rather wettable powder, and the corresponding seed dressing amount is 10 kg.

3. Early prevention work in rust-prone areas, growers can choose to apply pesticides in the field while they can still enter the field during the corn trumpet period, and some fungicides to prevent rust can be sprayed, and the current ideal fungicide formulas for the prevention and control of rust are: tebuconazole + oximetrobin, difenoconazole + propiconazole + etherstrobin, fluconazole + pyraclostrobin, difenoconazole + azoxystrobin + grambacterium, etc. 4. Strengthen field management to prevent the occurrence of rust, to be reasonable dense planting, corn reasonable dense planting can increase yield, in the fertilization management, in accordance with the requirements of corn growth and development, reasonable ratio of nitrogen, phosphorus and potassium, increase phosphorus, potassium fertilizer, by enhancing the plant's own resistance to stress to reduce the occurrence of rust.