When is the best time to apply herbicide to wheat, and can it be mixed with urea?
AbstractThe suitable time to apply herbicide to wheat is the tillering stage before winter sets in, and the early jointing stage in the second year. Applying herbicide during these two periods gives relatively good control results and is also safe for the wheat; if the timing is late, the results will be relatively poor. Acidic wheat herbicides cannot be used at the same time as urea, and urea is also not suitable for use at the same time as Bordeaux mixture. To ensure that the weeding effect is not affected, after applying herbicide to wheat, urea can be applied after an interval of about 7-10 days.
1. Timing of applying herbicide to wheat
1. The suitable time to apply herbicide to wheat is the tillering stage before winter sets in, and the early jointing stage in the second year. Applying herbicide during these two periods gives relatively good control results and is also safe for the wheat; if the timing is late, the results will be relatively poor. Among these, the 2,4-D butyl ester herbicide is best applied as early as possible, while tribenuron-methyl is best used after wheat turns green and before it begins to stand upright, to avoid phytotoxicity to the following crop.
2. When applying herbicide to wheat, it is necessary not only to grasp the timing but also the temperature and humidity at the time of application. It is suitable to apply the pesticide when the average temperature is above 6°C, and the control results will be relatively good. Generally, agents such as tribenuron-methyl are sensitive to temperature; under low-temperature conditions, it may take 15-20 days, or even 1 month, after application before relatively good control results appear.
3. At the same time, herbicides need to be used on sunny days when the temperature is slightly higher, generally preferably at 10 a.m. or 3 p.m. If the soil is dry, the amount of water used should be increased when applying herbicide to achieve relatively good control results.
2. Can wheat herbicide be used at the same time as urea?
Generally, acidic wheat herbicides cannot be used at the same time as urea, and urea is also not suitable for use at the same time as Bordeaux mixture. To ensure that the weeding effect is not affected, after applying herbicide to wheat, urea can be applied after an interval of about 7-10 days.
3. Distribution range of wheat
1. Wheat is a grass-family plant and is now a cereal crop widely planted around the world. The caryopsis of wheat is one of humanity's staple foods. Generally, after being ground into flour, it can be used to make foods such as bread, steamed buns, biscuits, and noodles. After fermentation, it can be made into baijiu (such as vodka), beer, alcohol, or biomass fuel. The Mesopotamia region was an earlier area in the world where wheat was cultivated, and China is one of the relatively early countries in the world to grow wheat.
2. The East China region includes Shandong, Jiangsu, and northern and central Anhui; the North China region includes Beijing, Tianjin, Henan, Hebei, and Shanxi; the Central China region includes Jiangxi and Hubei; the Northwest region includes Qinghai, Ningxia, Gansu, Shaanxi, and Xinjiang; the Northeast region includes Jilin, Liaoning, and Heilongjiang; the Southwest region includes Sichuan, Chongqing, and Guizhou; the northern region includes Xinjiang and Inner Mongolia.
3. The main components of wheat are fat, protein, crude fiber, carbohydrates, calcium, phosphorus, potassium, vitamin B1, vitamin B2, and nicotinic acid, among others. There is also an allantoin component, and wheat germ is also rich in dietary fiber, vitamin E, as well as small amounts of amylase, arginine, sitosterol, lecithin, and proteolytic enzymes.