What is the best time for foliar spraying of paclobutrazol on peanuts

Peanuts need to be sprayed with various fertilizers and pesticides during their growth period, so when should paclobutrazol be sprayed on the leaves of peanuts? Let's take a look!

1. What is paclobutrazol?

Paclobutrazol is actually a plant growth regulator, and it is suitable for many plants, such as rice, fruit trees, tobacco, rapeseed, soybean, flowers, lawns, etc. Its main effects are to delay plant growth, inhibit stem elongation, shorten internodes, promote plant tillering, increase plant stress resistance, and raise yields.

However, when using it, you must strictly follow the instructions to avoid phytotoxicity. If the dosage is too high and causes excessive inhibition of crop growth, you can apply more nitrogen fertilizer or spray gibberellin to remedy it.

2. When should paclobutrazol be sprayed on the leaves of peanuts

Peanuts are generally sprayed with paclobutrazol on the leaves after the flowers fade and the pegs enter the soil. This can supplement the plant's nutrition, prevent excessive vegetative growth, and also has a certain controlling effect on some diseases. When spraying, choose a sunny day after 4 p.m. and spray the growing points at the top of the seedlings. Avoid spraying at high temperatures, repeated spraying, missed spraying, and rain after spraying.

3. Why spray paclobutrazol on peanuts?

1. It can increase peanut yield

Paclobutrazol is systemic, and its efficacy can be absorbed by roots, stems, and leaves, and it regulates crop growth so that more nutrients are absorbed by the flowers and fruits, thereby increasing crop yield;

2. Improve the stress resistance of peanuts

Spraying peanut plants with paclobutrazol solution can promote root growth and improve the roots' ability to absorb water and fertilizer. The volume of water-storing cells in the leaves increases, the transpiration rate decreases, and the water content of the leaves increases. Spraying paclobutrazol can improve the drought resistance of peanuts.

3. Regulate growth and development

Using an appropriate amount of paclobutrazol solution to dress seeds, with the dosage just enough to moisten the seeds, and sowing them in the field after covering them for 1h to dry, can regulate the growth and development of symbiotic seedlings. The specific manifestations are promoting shortening of the internodes at the stem base, reducing plant height, increasing branching, enhancing root activity, and significantly increasing the chlorophyll content and photosynthetic rate of the leaves.