The achievements of Nice (Weifang) Biotechnology Co., Ltd. in corn cultivation

1、 Case background

Mr. Wang, a large-scale grower in Henan Province, owns 200 acres of corn fields. The corn planting history in this area is long, but in recent years, pests and diseases have occurred frequently, seriously affecting the yield and quality of corn. Mr. Wang tried various prevention and control methods, and finally effectively controlled pests and diseases through the scientific use of pesticides, achieving increased yield and income.

2、 Disease and pest situation

1. Corn borer: Its larvae feed on corn stems, ears, etc., causing the stems to break easily and the ears to develop poorly, resulting in a yield loss of up to 10% -30%. The period from June to August each year is a high incidence period, with strong reproductive ability and severe generation overlap.

2. Corn aphids: They cluster on leaves and tender stems to feed on sap, causing yellowing of leaves, stunted growth, and spreading viral diseases. They are particularly rampant in hot and dry years.

3. Corn leaf spot disease: It mainly harms the leaves, with spindle shaped lesions. In severe cases, the leaves may become withered and yellow, affecting photosynthesis. It is prone to outbreak and spread in high temperature and high humidity environments.

3、 Formulation and implementation of pesticide control plan

1. Pre monitoring: Mr. Wang collaborated with the local agricultural technology promotion station to set up multiple monitoring points in the corn field and regularly inspect the occurrence of pests and diseases. By hanging traps to monitor the number of corn borer adults and observing the leaves, we can determine the signs of corn aphid and large spot disease.

2. Pesticide selection: For corn borers, choose high-efficiency and low toxicity chlorfenapyr suspension, which can effectively kill Lepidoptera pests, have a long shelf life, and are safe for natural enemies; To prevent and control corn aphids, imidacloprid wettable powder is used, which has strong internal absorption and good quick acting properties; To deal with corn leaf spot disease, choose tebuconazole suspension agent, which has a wide bactericidal spectrum and can effectively inhibit the growth of the pathogen.

3. Timing and method of pesticide application: During the early stage of emergence of corn borer adults, use a drone to spray chlorfenapyr suspension, dilute it to 1000 times the liquid, and choose to work before 10am or after 4pm on a windless and sunny day to ensure that the pesticide evenly covers the corn plants. At the initial stage of the occurrence of corn aphids, imidacloprid wettable powder was diluted 2000 times with a backpack spray, and then sprayed on the back of leaves and tender stems. When the big leaf spot disease of maize happens sporadically, tebuconazole suspension agent is sprayed with a motorized spray, diluted 1500 times, and sprayed every 7-10 days for 2-3 consecutive times.

4、 Prevention and control effect

1. Effective control of pests and diseases: The rate of corn borers boring stems has decreased from 20% in previous years to less than 5%, the density of corn aphids has significantly decreased, the disease index of corn leaf spot has significantly decreased, the rate of diseased leaves has been controlled below 10%, and the growth trend of corn is good.

2. Significant increase in yield: Through scientific pesticide control, the yield of corn per mu has increased from 800 kilograms to 1000 kilograms, with a total yield increase of 40000 kilograms. Calculated at a market price of 1.5 yuan per kilogram, the income has increased by 60000 yuan.

3. The quality of agricultural products is guaranteed: the selected pesticides meet the national pesticide residue standards. The harvested corn has been tested and found to have pesticide residues far below the national standards, indicating excellent quality and smooth entry into the market for sale.

5、 Experience summary

1. Accurate monitoring is crucial: timely and accurate understanding of the dynamic occurrence of pests and diseases, providing a basis for scientific drug use, and avoiding waste and environmental pollution caused by blind pesticide application.

2. Reasonable selection of pesticides: Select appropriate pesticide varieties based on the types and severity of pests and diseases, as well as the growth stage of corn, to ensure the effectiveness of prevention and control while ensuring the quality and safety of agricultural products and the ecological environment.

3. Pay attention to pesticide application techniques: use appropriate pesticide application equipment and methods, strictly control the dosage and time of pesticide application according to the instructions, improve pesticide utilization, and reduce pesticide residues.

4. Strengthen technical learning: Farmers should continuously learn about pesticide prevention and control knowledge, actively communicate and exchange with agricultural technicians, and improve their level of pest and disease control.