SU791200A3 - Agent for plant growth control - Google Patents

Description

This invention relates to chemical means for regulating plant growth. A plant growth regulator based on maleic hydrazide 1 is known. It is also known a plant growth regulating agent containing an organic nitrogen-containing active principle and an additive from solid and liquid carriers, in which 2-chloro-ethyltrimethylammonium chloride (chloro-chlorine chloride) 2 is used as the organic active principle. However, the activity of these agents; .UiH regulating plant growth is not always satisfactory. The aim of the invention is to enhance the growth-regulating activity of the agents. The goal is achieved by using a plant growth regulating agent containing an organic nitrogen-containing principle and an additive from solid and liquid carriers, in which a compound of the formula VfS — CH —UH-R, alkyl with an atom of carbon up to 4, phenyl, unsubstituted or substituted by halogen; alkyl with up to 4 carbon atoms, phenyl, unsubstituted or substituted by methyl, or once or twice substituted by chlorine, furanyl. The maintenance of the active starting agent is 95% by weight, the rest is additive. Compound of the above formula can be obtained by reduction of the formula. -n-g

Where R, and Rn are as defined above.

The reduction can, for example, be carried out with complex hydrides, such as sodium borane, in the presence of a polar solvent, such as methanol or lithium alanate, in tetrahydrofuran, at a temperature between 0 ° C and and followed by hydrolysis, for example, with an aqueous base or acids, or with hydrogen in the presence of a catalyst, such as platinum or Rene nickel in the presence of a polar solvent such as methanol, ethanol, isopropanol, at a temperature between 40 and at pressures between 1 and 100 barrels, or with aluminum isopropyl in the presence of an inert solvent at a temperature between 40 and 120 ° C and with subsequent hydrolysis, for example, with aqueous hydrochloric acid. .

The compounds thus obtained are extracted by conventional methods and, if necessary, purified. The best effect of the proposed means is seen primarily on corn, such as wheat, rye, barley rice and oats, as well as on dicotyledons (for example, sunflowers, tomatoes, grapes , cotton, rapeseed) and various ornamental plants, like poinsetts and hibiscus. Treated plants have lower growth, moreover, darker o, leaf color.

The proposed agent is used, for example, in the form of directly sprayed solutions, suspension powders, also high-grade water or oil suspensions or other suspensions, or dispersions, emulsions, oil dispersions, pastes, dusting agents, dusting agents, granules by spraying, dusting, scattering and watering. The form of application depends entirely on the purpose of the application; in any case, they must ensure the finest possible distribution of the proposed means,

For the preparation of directly sprayed solutions, emulsions of pastes and oil dispersions, fractions of mineral oil from a medium to high boiling point can be taken, such as kerosene or diesel oil, in addition, oil-tar tar, etc., as well as vegetable and animal fats aliphatic, cyclic and aromatic hydrocarbons, for example toluene, xylene, paraffin, tetrahydronaphthalene, alkylated naphthalenes or their derivatives, alcohols (for example, methanol, butanol) amines (for example, ethanolamine, dimethyl ormamid) and water; carriers such as natural rock flour (for example, kaolin, alumina, talc, chalk) and synthetic flour (for example, highly dispersed silicic acid, silicates); emulsifiers, non-ionic and anionic (for example, poly (ethyl alcohol) ethers, alkyl sulfonates and aryl sulfonates) and dispersants, such as lignin, spent sulfite liquors and methylcelluloses a.

In these forms of use, the agent according to the invention can be found in conjunction with other active principles, for example, with herbicides, insecticides, plant growth regulators and fungicides, or it can be mixed with fertilizer.

The proposed remedy is applied at a favorable time for this, which is determined by geographic, climatic and vegetative conditions.

Example 1. 95 weight.h. the current beginning is mixed with 5 wt. N-methyl-oi-pyrolidone and get a solution that is suitable for use with the smallest drops.

Example 2. 20 weight.h. the active agent is dissolved in a mixture of 80 parts by weight. xylene, 10 weight.h. an addition product of 8 and 10 mol of ethylene oxide to 1 mol of N-mono-ethanoamide of oleic acid, 5 parts by weight calcium salt dodecylbenzenesulfonic acid and 5 parts by weight an addition product of 40 moles of ethylene oxide to 1 mole of castor oil. By pouring and carefully distributing the solution to 100,000 parts by weight. water, an aqueous dispersion is obtained which contains 0.02% by weight of active principle.

PRI me R - 3. 20 weight.h. the active ingredient is dissolved in a mixture of 40 parts by weight. cyclohexanone, 30 weight isobutanol, 20 weight.h. the product of the addition of 7 mol of ethylene oxide to 1 mol of isooctylphenol, 10 weight.h. an addition product of 40 moles of ethylene oxide to 1 mole of castor oil. By pouring and carefully distributing the solution into 100,000 weight water, an aqueous dispersion is obtained which contains 0.02% by weight of active ingredient.

Example 4. 20 weight.h. the active agent is dissolved in a mixture of 25 parts by weight. cyclohexanol, 65 weight.h. fractions of mineral oil with a boiling point of 210-280s and 10 parts by weight. an addition product of 40 moles of ethylene oxide to 1 mole of castor oil. By infusing and carefully distributing the solution to 100,000 parts by weight. water, an aqueous dispersion is obtained which contains 0.02% by weight of active principle.

Example 5. 20 weight.h. the current beginning is thoroughly mixed

C 3 weight.h, sodium salt of diisobutylnaphthalenesulfonic acid, 17 weight.h. sodium salt of ligniisulphonic acid from sulphite spent liquor and 60 parts by weight powdered silica gel and milled in a hammer mill. By carefully distributing the mixture to 20,000 parts by weight. water is obtained by spraying liquid, which contains 0.1% by weight of active ingredient.

Example 6. 0.1 weight.h. The active principle is thoroughly mixed with 99.9 parts by weight. highly dispersed kaolin. In this way, a pollination agent is obtained which contains 0.1% by weight of active principle.

Example 7. 30 weight.h. the current beginning is thoroughly stirred with a mixture of 92 weight.h. powdered silica gel and 8 weight.h. paraffin oil, which is sprayed onto the surface of the gel of silicic acid.

Thus, they ensure good adhesion of the active agent.

Example 8. 40 weight.h. the current beginning is thoroughly stirred with 10 weight.h. sodium salt of urea-formaldehyde condensate phenolsulfonic acid, 2 weight.h. For testing the biological efficacy of new compounds, experiments were performed in a greenhouse. At the same time, the plants to be tested are sown in 12.5 cm plastic vessels using a peat culture substrate, sufficiently provided with nutrients. The active principles in the form of aqueous solutions or dispersions in various quantities are sprayed directly onto the surface of the earth on the day of sowing.

During the 18 days of growth, the plants treated with the proposed agent show a distinctly smaller height in height than the untreated control plants, which is confirmed by

by measurement. Here, 100 plants are measured from each row.

The known active principle 2-chloroethyl-trimethyl ammonium chloride (0 L) showed less growth-regulating activity.

Test data are presented in Table. 2-4.

-Table 2

25

Effect on the length of wheat growth

thirty

Claims (1)

Claim Means for regulating plant growth, containing an organic nitrogen-containing active principle and an additive from among solid and liquid carriers, characterized in that, in order to enhance the growth-regulating activity, it contains a compound of the general formula as an organic nitrogen-containing principle 25 Ar, ’’ OH 1G N / v n p —'N where R.J is alkyl with up to 4 carbon atoms, phenyl unsubstituted or substituted by halogen; Rj is alkyl with up to 4 carbon atoms, phenyl, unsubstituted or substituted by methyl or once or twice substituted by chlorine, furanyl, in an amount of 0.1-95% by weight of the agent.