What is the best time to apply herbicide to corn
Corn is a crop in high demand in our country, and many people grow it, so when is the time to apply herbicide when planting corn?
1. Basic introduction to corn
Corn is an annual herbaceous plant of the grass family and the genus Zea, and its names vary from place to place, such as baogu, baolu, yujiao, baomi, bangzi, sumi, yushushu, and so on.
Corn is a relatively important component of China's food crops, and among China's food crops its total output is second only to rice and wheat.
There are many varieties and types of corn. By use, they include grain and feed varieties, vegetable varieties (including waxy type, sweet type, and baby corn type), processing varieties (sweet corn, baby corn), and popping varieties (special varieties for popcorn), and so on.
2. Time to apply herbicide when planting corn
The best time to apply herbicide to corn is when the corn seedlings have 3-5 leaves and the weeds have 2-4 leaves. The best time to apply herbicide is after 6 p.m. in the evening. Because after corn is sprayed with herbicide, it needs an absorption process of 2-6 hours. If sprayed during the day, the temperature is too high and the light is too strong, and the liquid will quickly volatilize, affecting the weed control effect.
The reason for choosing the period when the corn seedlings have 3-5 leaves and the weeds have 2-4 leaves to apply herbicide is that if the application period is too late, the resistance of the weeds increases and the weed control effect is affected. In particular, a mixture of nicosulfuron and 2,4—D butyl ester cannot be applied after the 5-leaf stage of corn.
3. What value does corn have?
1. Medicinal value
Sweet, neutral, and non-toxic, it can regulate the middle and promote appetite; corn fructose syrup can prevent bleeding gums and has an auxiliary effect on the treatment of cardiovascular diseases; corn pollen and germ also contain large amounts of vitamin E and corn flavonoids, and regular consumption of corn products can delay human aging and enhance people's physical strength and endurance.
2. Edible value
The vitamin content in corn is very high, 5-10 times that of rice and wheat. Among all staple foods, the high-nutrient substances contained in corn, such as riboflavin, are very beneficial to the human body.