Brassinolides are sterols extracted from rapeseed flowers by American scientists. This substance not only promotes growth, but also acts as a regulator such as ethylene and gibberellins. At present, it is widely used to regulate the growth and development of crops, including wheat, rice, fruit trees, etc., and its main function is to improve yield and crop quality.
1. The role of brassinolide
Brassinolides can increase the green content of leaves, improve photosynthetic efficiency, and help accelerate the transportation of photosynthetic products in plants. It is usually used to preserve flowers and fruits after the flowers of fruit trees fade. It is used to delay premature aging of functional leaves after the booting stage of grass crops, which helps to set fruit and increase yield.
Brassinolides can improve crop stress resistance, improve crop quality, make fruits even and bright, and increase sweetness. Brassinolides can also help distribute nutrients and help transport photosynthetic products to fruits or grains, which is beneficial to increasing crop yield and quality.
2. The role of potassium dihydrogen phosphate
Potassium dihydrogen phosphate is a widely used phosphorus-potassium fertilizer. It is also widely used on fruit trees and cereal crops. It can be used during most crop growth periods. This is somewhat similar to brassinolide.
Potassium dihydrogen phosphate is mainly used to preserve flowers and fruits, help flower buds differentiate, and then help fruit trees change color and sweeten. Use on wheat and rice in summer can reduce heat damage, and use on fruit trees in winter can help reduce freezing damage.
Brassinolide and potassium dihydrogen phosphate are a kind of regulator and a kind of fertilizer. They have similar functions, such as preserving flowers and fruits and resisting stress and eliminating phytotoxicity. But there are also complementarities. For example, potassium dihydrogen phosphate has fertilizer characteristics, and the combination of the two can achieve better results.
How to use brassinolide with potassium dihydrogen phosphate?
1. Wheat and rice yield increasing formula
Brassinolide + potassium dihydrogen phosphate, used once each during the heading and flowering stages and the booting stage, can have a better effect on increasing yield and preventing diseases. Both brassinolide and potassium dihydrogen phosphate can delay premature aging of flag leaves and improve photosynthesis efficiency. Potassium dihydrogen phosphate can supplement more nutrients required for photosynthesis, while brassinolide coordinates the delivery of more photosynthetic products to wheat and rice grains.
The combination of brassinolide and potassium dihydrogen phosphate can not only help to set and strengthen seeds, but also reduce the impact of high temperature at the ear stage on wheat and rice yields.
It is recommended to use more efficient natural structure brassinolide. Generally, 10 ml of 0.01% brassinolide and 100 g of 99.7% potassium dihydrogen phosphate are used per acre, mixed with 30-60 catties of water and sprayed evenly during the heading and flowering period. and spraying during the grouting stage.
2. Formula for preserving flowers and fruits of fruit trees
After fruit trees wither their flowers, spraying with brassinolide and potassium dihydrogen phosphate will help boost photosynthesis and replenish nutrient losses during the flowering period. It is recommended that 0.01% brassinolide be mixed with water 2000-3000 times, and 99.7% potassium dihydrogen phosphate be mixed with water 500 times. You can also add 0.5% urea and spray together to help preserve the fruit. This formula is suitable for all kinds of fruit trees.
3. Antifreeze and pesticide harm reduction formula
Before the onset of winter frost damage, usually one week in advance, foliar spraying of potassium dihydrogen phosphate and brassinolide can reduce the occurrence of frost damage. When plants encounter damage from herbicides and other pesticides, they can also be remedied by spraying brassinolides and potassium dihydrogen phosphate. Generally, spray twice continuously, 7-10 days apart, with 0.01% brassinolide mixed with water 2000-3000 times, and 99.7% potassium dihydrogen phosphate at a concentration of 0.2%.
