In the process of peanut planting, growth control is one of the key links to improve yield and quality. However, growth control is not just a simple use of paclobutrazol and other agents, but also requires scientific combination of other drugs to achieve the best effect. This article will introduce in detail the precautions and high-yield strategies for peanut growth control, hoping to help the majority of growers.

Precautions for growth control

Use less paclobutrazol

Although paclobutrazol is a commonly used growth control agent, it has a long residual period in the soil and has a greater impact on the peanut root system. Excessive use can easily lead to a low peanut stone rate and the formation of a single fruit. Therefore, it is recommended to use paclobutrazol as the main agent, or to use a compound component of paclobutrazol to reduce the adverse effects on peanuts.

Use of calcium prohexadione

Calcium prohexadione is a new type of peanut growth control ingredient with a slow and mild effect. If used when peanuts are already growing vigorously, the effect is not good. Therefore, it is recommended to use calcium prohexadione in advance or in the early stage, and compound it with paclobutrazol to ensure the effect.

Control the amount of medicine used during the flowering period

It is not advisable to use excessive growth control drugs when peanuts just bloom, otherwise it will affect the needles and cause the peanut fruit needles to hang in the air. At this time, paclobutrazol should be avoided. It is recommended to use a combination of clofosazole and calcium cyclamate to ensure safety.

Combined with nutritional agents

Growth control drugs such as paclobutrazol and clofosazole control vigorous growth by affecting the synthesis of gibberellins in plants. Gibberellins are distributed in various parts of the plant body, so the use of growth control drugs will more or less affect the needles and fruit swelling of peanuts. It is recommended to use nutritional agents to enhance the effect when using growth control drugs.

Golden combination of peanut growth control
When controlling the growth of peanuts, some drugs that promote needles or fruit swelling can be used to achieve multiple effects at one time. The following three types of drugs are recommended for use in combination when controlling the growth:

Choline chloride

Choline chloride is a very good peanut fruit swelling drug. It increases the chlorophyll content of crops, enhances photosynthesis, inhibits respiration, and transfers more nutrients to the root system, thereby promoting fruit swelling. When used with growth control drugs, it can promote more nutrients to transfer to peanuts and increase the thousand-grain weight. The recommended dosage is 60% choline chloride 15g diluted with 30 catties of water for spraying.

Potassium dihydrogen phosphate

When peanuts are growing vigorously, they are in the needle-dropping or fruit-swelling period, and the demand for phosphorus and potassium fertilizers is very large. Potassium dihydrogen phosphate can be directly absorbed by peanuts, quickly replenishing phosphorus and potassium elements, and promoting the formation and expansion of peanuts. At the same time, potassium dihydrogen phosphate also has a certain growth control effect. The recommended dosage is 99% potassium dihydrogen phosphate 100-150 grams diluted with 30 catties of water for spraying.

Calcium fertilizer

Calcium must be supplemented in the middle and late stages of peanut growth. Calcium supplementation from the needle-dropping stage can promote more needles, and calcium supplementation during the fruit-swelling stage can make the peanut skin thicker and reduce the occurrence of rotten fruit and root rot. It is recommended to use sugar alcohol calcium or chelated calcium, with a dosage of 20-30 ml per mu of land.

In addition, when there is a lot of rain, 32.5% benzoyl-pyraclostrobin 20ml per mu can be used to prevent brown spot and black spot and reduce peanut leaf fall.

Through the above reasonable control strategies and drug combinations, growers can effectively control the vigorous growth of peanuts and promote high yield and quality of peanuts.

I hope this article can provide useful guidance for the majority of growers and help the success and harvest of peanut planting.