Plant growth regulators have the effect of resisting low temperatures, drought, floods, wind disasters, and pests and diseases, which is known as stress resistance in academia. The main reason is that after spraying, the content of lignin and cellulose in crops increases. Crop stems are tough and grow vigorously. It not only enhances immunity and resistance to pests and diseases, but also enhances the ability to resist lodging.
Due to timely supplementation of nutrients, the hydration level of crop cell protoplasm is improved, thereby enhancing the water retention ability of cells. The improvement of water retention ability makes it difficult for the moisture inside the crop to evaporate and dissipate, which actually enhances its drought resistance. At the same time, due to the increase in sugar reserves in crops and the increase in cell osmotic pressure, not only does it increase the sugar content in sugar crops, but it also lowers the freezing point of cells, thereby enhancing the cold resistance of crops.
When and how can plant growth regulators be sprayed for better results?
The spraying time should be selected on a sunny day, without wind, with a temperature above 20 degrees Celsius. Generally, it is advisable to spray after 3 pm on a sunny day, and it is not advisable to spray under strong winds, rain, or scorching sun. Due to the uneven spraying caused by windy weather, diluent should not be sprayed on crop leaves and fruits, which may affect the effectiveness of use. Spraying on rainy days can cause the medicine to drain. If it rains within 6 hours after spraying, it should be re sprayed. Spraying under the scorching sun can cause the medicine to evaporate quickly and also affect its effectiveness.
Plant growth regulators are a type of contact agent with certain adhesion and absorption properties. When spraying, simply spray evenly on the leaves and fruits according to the instructions, and the medication should be applied to the leaves as soon as they are about to drip.
