DE692418C - Promotion of plant growth - Google Patents

Description

Promotion of plant growth The main patent 689 zig concerns the Use of quaternary thiazolium compounds attached to the nitrogen atom of the Thiazole rings contain the pyrimidyl radical bound, as a growth-promoting agent for higher plants. The vitamin in particular is a representative of this group B1 and similarly structured N- (pyriinidyl-5'-alkyl) -thiazolium salts called.

In further processing of the field it was found that not only N-pyrimidylthiazolium compounds, but also quaternary thiazolium compounds in general, promote the growth of higher plants, in particular the formation of roots. Such compounds correspond to the general formula in which Y stands for any anion and R stands for an organic radical which is bonded with a carbon atom to the nitrogen atom of the thiazole ring. R should not mean the pyrimidyl radical. The carbon atoms of the thiazole ring can carry substituents.

X can e.g. B. for the anions Cl ', Br', S 04 ", P 0 ... , -S 03 R, P201"", C H3 C00 'or N 03 stand.

R can e.g. B. mean an aliphatic radical, optionally may be branched or substituted. As an example, there are Hydroxyl, ether, acyl, acyloxy, amino, acylamino, alkylamino, arylamino, Cycloallzylamino, oxy = alkylamino, carboxyl, carboxyl ester groups or halogen atoms in question. R can thus z. B. for the residues methyl, ethyl, dodecyl, isopropyl, tert. Butyl =, oxyethyl, methoxy, ethyl, aminoethyl, -C H2, C H2 C 0-C H3, acetyloxyethyl, Aminoethyl, acetylaminoethyl, benzoylaminoethyl, oxyethylaminoethyl -, Methylaminoethyl, -C H2 C O O H, -C H2 C O O C2 H5 or chlorine or bromine atoms occur.

R can also represent an aliphatic-aromatic radical, e.g. B. the benzyl or methylpyridyl radical (-C H2 C5 H4 N). The aromatic kernels can turn Substituents, e.g. B. nitro or amino groups wear.

Furthermore, R can represent a cyclic radical. R can e.g. B. for an aromatic radical such as phenyl or kaphthyl, or for a cycloaliphatic Ring, like the cyclohexyl group. It can also be heterocyclic Ring, such as the pyridine, quinoline or piperidyl radical. Here the Nuclei still carry substituents such as nitro or amino groups or halogen atoms.

As substituents on the carbon atoms of the thiazole ring, for. B. alkyl groups in question, which in turn can be substituted. Such Substituents are, for example, methyl, ethyl, isopropyl, alkoxyalkyl, z. B. Methoxyäthyl-; Ethoxyethyl, oxyalkyl, z. B. Oxyäthyl- or aminoalkyl, z. B. aminoethyl groups. Furthermore, there are open and closed hydroxyl groups, z. B. ethoxy, methoxy or acetyl or. Benzoyloxy groups in question. Also amino groups, the z. B. substituted by acyl, alkyl or aryl groups can be present be. Furthermore, aliphatic-aromatic or aromatic radicals can be used as substituents occur on the carbon atoms of the thiazole ring. Such substituents are, for example Phenyl, naphthyl, phenol, aminophenyl or benzyl groups.

One or more carbon atoms can carry substituents in the thiazole ring. Aroinatic kernels can e.g. B. be annelated in 4,5-position as in the case of the compounds The above-mentioned quaternized thiazolium compounds are prepared by all customary processes, such as those described, for example, in US Pat. B. in Journ. Amer. Chem. SOC. 57, p. 1876 (1935); Ber. 69, p. 217 (1936).

The aforementioned substances can be used alone, e.g. B. in solution, or mixed with or adsorbed on per se known plant nutrients, stimulants, dressings and / or inorganic or organic carrier substances for promoting plant growth Find use. You can z. B. the substances listed in Nlisclituig with the usual fertilizer salts, in particular nitrogen fertilizers, such as Am-. inon nitrate, Ammonium sulphate, urea and its salts, e.g. B. urea phosphate, calcium cyanamide, or potassium salts, such as carnallite and potassium nitrate, or phosphates, such as ammonium phosphate or superphosphate, use. The growth substances according to the invention can also be mixed with lime, Peat, lignite or in ointment-shaped pastes, for example in a mixture with water-based Wool grease or rubber-like, water-absorbent substances, e.g. B. agar-agar, for use bring.

As a seed dressing, with which 7usanimen the growth substances on the Can be applied to seeds, the usual wet and dry dressings come in Question. Mention may be made, for example, of alkyl, alkoxyalkyl or aryl mercury salts, such as the acetates, nitrates, oxalates, or arsenic compounds, e.g. B. methylarsine oxide, or quinones, quinhydrone or oxyphenylhydrazines.

With the quaternary thiazoliuin compounds mentioned, both treat the seeds as well as cuttings. The thiazolium compounds, z. B. by Ouellen o. The like. Applied. Cuttings are useful in solutions of the thiazolium compounds or with ointment-like pastes or semi-liquid Treated preparations. To promote the root growth has in particular one Combination of quaternary thiazolium compounds with ß-indole acetic acid, their Esters, salts or homologues proved to be useful.

It "is known that vitamin Bi promotes growth at higher levels Plants, but it could not be inferred that quaternary thiazole compounds, which do not carry the pyrimidyl radical, to the same extent the plant growth would stimulate, since in general the plant growth-promoting effect is specific depends on the substitution. In addition, the more simply structured, according to the present Invention used quaternary thiazolium compounds synthetically easier and cheaper than vitamin B1 and its homologues.

Embodiments i. In an o, ooi o / o solution of N-benzyl-q., 5-dimethylthiazolium chloride cuttings of a fuchsia (Fuchsia elegans) are placed. Starts after about 8 days a lively root formation, which compared to the use of water or a aqueous nutrient solution is significantly stronger.

z. N-phenyl-a-phenylainino-4.-methyltliiazolite chloride becomes o, ool ° / o in one o, oi o / oigen solution of ß-indole acetic acid potassium dissolved and put in this solution cuttings of chrysanthemum species for 24 hours. the Cuttings are then further cultivated in the greenhouse in the usual way. To A few weeks it turns out that the cuttings treated in this way have far better rooting show and have sprouted significantly more strongly than comparison plants that only treated with ß-indole acetic acid solutions alone or with water or nutrient solutions have been.

Claims (1)

PATENT CLAIM: Promotion of plant growth according to patent 689 2i9, characterized in that other quaternary thiazolium compounds are used.