Kornevin is a root formation stimulator based on indolylbutyric acid (IMC), belonging to the auxin group. Unlike heteroauxin (indole acetic acid), the acidic “tail” of the IMC is longer (on the left in the figure) than the longer and softer root effect.
Structural formulas of root formation biostimulants and sales forms of root production
Corpus root drug is a white, beige or pinkish powdery powder in the center. Packaging - in bags of 4-5 g for indoor gardening, cottages and small individual plots or packages for use on large areas, to the right.
Advantages and disadvantages
The main advantages of the root - affordability and the ability to make substitutes with your own hands, see below. The use of root for vegetative propagation by cuttings will cost approx. 1 rub. on the plant. Another important advantage of the root is complete compatibility with most of the means of agrochemistry and plant protection. In a doubtful case, it is also easy to check the root for compatibility with another drug: mix 50 ml of this and another working solution. No precipitate - compatible.
Disadvantages - the specificity of the action (also see below), the root is not suitable for any crops. Also, the requirements for dosage, methods of preparation, use and precautions when working with the drug, are quite stringent, see below. A slight overdosing or misuse leads, on the contrary, to oppression and even death of the cutting. Therefore, root as a root growth stimulant can only be recommended for attentive and careful plant growers.
Kornevin is a substance of hazard class 3, i.e. moderately dangerous. The root powder is volatile, so you can work with it only in the open air, on the balcony, on the veranda or in a room with forced-air ventilation. Working with the root, you need to use PPE: latex gloves, a plastic apron or cape (raincoat), petal respirator or dry gauze dressing, glasses. When ingested, you need to take activated charcoal, 1 tablet for 12-15 kg of body weight, drink 4-5 glasses of water and consult a doctor. After contact with skin, wash immediately with plenty of water. In case of contact with eyes, rinse thoroughly with clean water and consult a doctor.
Features of use
The preparation of the root should be stored in the dark in a tightly closed glass container out of the reach of children and pets. The expiry date indicated on the container is valid only for unopened packaging, the working solution is stored for no more than 12 hours. Therefore, it is necessary to dilute the root (see below) immediately before use and to purchase the drug is very desirable in quantity only for the current treatment.
Charles Darwin first suggested the development of plant substances that affect phototropism - the attraction to light, he called them auxins. With the development of biochemistry, it turned out that auxins are a special group of phytohormones and their effect on plants is not limited to phototropism. The IMC was first allocated in Russia by N. N. Suvorov with employees. The first industrial technology for the production of IMC was developed by Japanese researchers Maima and Hoshino in 1925. Further also in Russia, FN Stepanov proposed a much cheaper method for the industrial production of IMC.
Composition, action and dosage
The composition of the root except IMC (0.5% of the dry mass of the substance, or 5 g per 1 kg of commercial powder) includes macro- and microelements that promote rooting: potassium, phosphorus, manganese and molybdenum. Rootstock is simply divorced: how many grams in a bag, just as you need ordinary tap water. It is also possible to pollinate the roots with a dry preparation, see below. The action of the root is based on the formation of an influx over the cut / fracture - callus, the root roots as a phytohormone are predominantly a carbon-forming agent. The dormant buds awakened in callus make roots much more intense than on other parts of the cutting, which is clearly seen in Fig.
Callus with young roots on the handle
However, the root must be used with caution. If the uterine plant itself is well grafted (callus before rooting is small or not noticeable), the root will only delay rooting. From left to next rice it can be seen that the stalk of a bean without an IMC and the root of roots takes root and develops better. In this case, the rooting of strong cuttings from a strong healthy plant should be accelerated (if required) with heteroauxin, and the formation of roots on the weak should be stimulated with epin.
Effect of indolylbutyric acid and root on plants with varying degrees of susceptibility to them
Note: In general, root roots are not particularly recommended for grafting grass plants, in this case its purpose is somewhat different, see below.
Cuttings of plants rooting medium or weakly (roses, hibiscus, room citrus and grapes, room pomegranate), together with the root, require, as a rule, the use of additional preparations, most often specific to this species. For example, rose cuttings root much better if the root is used in combination with zircon, right on fig. In any case, 3-7 days after the landing of the rooted cutting, it is necessary to give him phosphate-potassium fertilizer so that the vigorously growing roots “suck” callus, otherwise the seemingly fully accustomed cutting can rot. Don't expect a fat soil here, you need quickly digestible mineral fertilizers.
Video: about breeding cuttings of blue spruce and juniper
“Kornevin” is an analogue of “Heteroauxin”, more advanced and toxic - 3 and 4 hazard class, respectively, but it has a more lasting effect on the root system of a plant. "Home" tools are less effective, but quite safe. What to stop at? In any case, the choice for the gardener. The main thing - do not forget about the need to comply with the instructions. Then there will be no problems, and the result will please.