What is a rooting agent? You should know about rooting agents! Rooting agents are auxin compounds that are plant growth regulator accelerators. In vegetable production applications, indole acetic acid, indole butyric acid, naphthalene acetic acid, and roots are used. Raw, br rooting agent, sodium nitrophenolate and other components, its role is to maintain the plant's apical dominance in plants, induce assimilation products to the product (fruit) transport, promote plant rooting and so on.

At present, the rooting agents on the market can be mainly divided into the following three categories: common rooting and seedlings (single-type compounds such as acetic acid or sodium naphthaleneacetate or a mixture of the above-mentioned compounds according to scientific ratio), and biological bacteria. A rooting agent (ABT biological rooting powder) mixed with a rooting agent, a rooting agent (such as a root block) compounded with a nutrient element and a growth promoter.

Roots are the basis and key to crop growth, and roots and roots are becoming more and more important. In recent years, rooted products have also been used more and more widely. There are many varieties of rooting agents, such as uneven growth, especially some products that play a major role in plant growth regulators. Improper use often causes crops to “only grow long, not long fruit”, and even premature aging. Many farmers lacked this understanding, planted a lot of roots in the use of rooting agents, and suffered a lot of losses.

What is a rooting agent?

Any compound that has a synthetic substance that promotes rooting like endogenous auxin or that promotes the formation of endogenous auxin and inhibits the decomposition of auxin can promote rooting to varying degrees. These substances are collectively referred to as rooting agents.

Are there some flaws in the rooting agent?

Generally, regulators for rooting are naphthaleneacetic acid (sodium), indole acetic acid, indolebutyric acid (sodium or potassium), naphthyloxyacetic acid, phenolic compounds, and the like.

Indole acetic acid

Indole acetic acid is the first rooting agent used in agriculture, mainly to promote the production of adventitious roots.

Naphthaleneacetic acid (sodium)

Sodium naphthaleneacetate is a commonly used rooting agent, which can be used for soaking seeds, rooting, and immersion cutting, and has the effect of increasing the number of straight roots.

Butyric acid

The physiological action of indolebutyric acid is similar to endogenous auxin, and it is not easily decomposed by indole acetic acid oxidase in plants, and its biological activity lasts for a long time. It mainly uses dry to promote plant rooting and early rooting and multi-rooting of transplanted plants.

In addition to the above main rooting ingredients, some other regulators or substances can also promote crop rooting.

Salicylic acid

Salicylic acid can not only be used for drought resistance, but also plays a good role in promoting crop rooting.

2,4-D

Its low concentration can promote the formation of roots, but because the liquid is easy to operate in the plant, affecting the development of shoots, the scope of application is narrow.

Mineral source yellow humic acid

The mineral source fulvic acid can be absorbed by the roots, stems and leaves of plants, promotes catalase, inhibits the formation of indoleacetic acid oxidase, and promotes rooting.

Seaweed essence

It is rich in minerals and trace elements, and also contains a certain amount of polyphenols, seaweed polysaccharides and a large number of growth regulators to promote crop seed germination, improve crop growth and yield, improve crop quality and promote rooting.

In addition, there are also chlormequat, inducer, paclobutrazol, sodium complexate, and brassinolide, which also have root-promoting effects, which are not listed one by one.

Classification of rooting agents

1 conventional rooting and seedlings

A single type of compound such as indole acetic acid, indole butyric acid, naphthalene acetic acid or the like, or a mixture of the above several compounds according to scientific ratio. Suitable for crops in the seedling stage and late growth stage.

2 compound rooting agent mixed with conventional rooting agent

Such as ABT biological bacteria rooting powder, suitable for the initial stage of the results and the pre-growth stage.

3 rooting agents compounded with nutrient elements and biostimulant substances

Such as sea elf bio-stimulants, this combination of the above two characteristics, can be applied throughout the crop growth process.

Precautions for using rooting agents

● The preparation method and concentration of the drug, the number of times of administration, and the site of application must be strictly controlled.

● Master the application period, which depends mainly on the developmental stage of the plant and the application purpose.

● Must be combined with cultivation measures, rooting agents are not a substitute for fertilization and must be combined with reasonable cultivation practices.

● When rooting the seedlings with rooting agent, it is necessary to fully consider its growth habits, specifications, tree age, quarantine, planting temperature, humidity, light, soil properties, transplanting details and many other factors.

● Treatment of injured roots cannot rely on conventional rooting agents. Rooting agents only play a role in promoting roots and root damage is often difficult.

Finally, I would like to remind the majority of farmers to use hormone-based rooting agents, and the rooting products of nutrients and bio-stimulants are more worthy of respect. The reasons are as follows:

First, hormonal rooting agents can promote roots, but a large number of applications can lead to the breakdown of hormone balance in plants, which is prone to problems such as premature aging.

Second, the application period and concentration requirements are strict, and it is also necessary to mix fertilizers, which is not a simple application.

Third, hormone rooting agents cannot solve the essential problem.

Pay attention to the following points in the application of rooting agents:

(1) Note that the concentration and dosage of the drug and the site of application must be strictly controlled when the drug concentration and application site are applied. If you use 2.4-DD to prevent tomato from falling, you can only treat the flowers, not the whole plant or apply to the young shoots and young leaves, otherwise it will cause phytotoxicity.

(2) Mastering the application period The application period mainly depends on the developmental stage of the plant and the application purpose. If the female flower formation of pumpkin is induced by ethephon, it must be sprayed in the fine seedling stage with 4-6 leaves. If it is applied too late, the sex of the early flower has been determined, and the purpose of inducing female flowers is not achieved. Application of plant growth transfer agents should be carried out on cloudy days or in the morning and evening.

(3) must be combined with cultivation measures Plant growth regulators can not replace fertilization, must be combined with reasonable cultivation measures. If the cucumber is treated with ethephon, the cucumber can open more female flowers and more melons, but when the conditions such as fertilizer and water are insufficient, the cucumber type is small, the fruit setting rate is low, and high yield cannot be obtained.

(4) The method of applying fertilizer in the colonization hole is commonly referred to as “the nesting of guns”. In this way, fertilization is more concentrated and fertilizer utilization is high. Especially for the sheds where soil deterioration and soil-borne diseases are serious, "women in the nest" is an effective method of fertilization. However, in an interview with the countryside, the author learned that a lot of shed vegetables had been burned due to "burning in the nest". Why? The reason is very simple, that is, the concentration of fertilizer in the planting hole is too large, the root system can not be absorbed evenly, resulting in poisoning and burning. If further investigation is carried out, it should be caused by improper fertilization methods.

Therefore, the application of fertilizer in the hole must be cautious. Under normal circumstances, the hole depth is about 5-10 cm, and the soil is covered after fertilization. In order to avoid the fertilizer with high concentration in the hole hurting the root of the crop, the organic fertilizer applied at the hole must be fully decomposed in advance, and the fertilizer and biological fertilizer must be mastered.

Further, fertilizers containing too much nitrogen such as urea or ammonium hydrogencarbonate are not suitable for use. Because such fertilizers are more irritating to vegetable roots, and the demand is small. Therefore, it is best to use fertilizers such as soybean meal organic fertilizer, biological fertilizer, humic acid and amino acid fertilizers. These fertilizers not only contain nutrients but also are not easy to burn roots. Generally, it is better to apply about 30 grams in the colonization hole.

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