SU743661A1 - Plant growth stimulant - Google Patents

Description

(54) PLANT GROWTH STIMULATOR

This invention relates to chemical means of stimulating physiological processes in plants.

Known use of succinic acid as a plant growth stimulator 1.

It is also known to use 3-indolylacetic acid. 3-indolyl propionic acid, 3-indolyl butyric acid, 1-naphthyl acetic acid.

. - -СНг-С- ... -CH, -U

From 0

CHji-CR-CH

ABOUT

Where

acids as stimulants for plant growth 2.

However, the activity of posterior stimuli is insufficient. The purpose of the invention is to increase

activity of plant growth stimuli. I

The goal is achieved by using polyether esters of the general formula

 SNS

with about

CH2-CH-CH2-0-C-BL. I HE

sn,

I N H 37 as a growth stimulator. Methods for their preparation and their main fiz-v co-chemical properties 3. Stimulants can be obtained without difficulty directly by the interaction of biologically active carboxylic acids with available polymeric polyglycidyl, methacrylate carrier. The following examples show the activity of the proposed stimulators. Example 1. In the vegetation experiments carried out under greenhouse conditions, wheat of Mironovsk 808 varieties was treated in a 2-leaf stage with the indicated polymeric fibers with the addition of 5% by weight of the preparation of surfactant. The results of the experiments are determined on the 20th day. These are given in table. 1. Serve as freedoms} 1st carboxylic acids. The tested preparations have a fertile stimulating effect even under conditions of drought and salinity, the best results were obtained with the polymer ester of 3-indolylbutyric acid. Preparations can be recommended for small-scale night experiments. Example 2. In a 0.7% solution of agargar, the active substance of various concentrations was introduced in the form of an acetone solution (3 ml per 200 ml of agar-agar solution). The resulting mixture was poured into Petri dishes with a diameter of 70 mm. 6 seeds of peas and 20 seeds of other crops were sown in each cup. The experiment was carried out in triplicate at 28 ° C. In the control, seedlings were treated with the same amount of water and in the presence of the same amount of surfactant as in the main experiments. In the main experiments, seedlings were treated with an aqueous suspension of a polymer (or low molecular weight stimulator) obtained in the presence of a surfactant.

Polymer ester based on 3-indole acetic acid

3-Indolylacetic acid

Table 1

103.0

97.0

111.5

97.1

89.4. 83.0 After 6 days, the experiments were terminated, and the growth pattern was discharged with respect to the control, coming from the raw mass of the seedlings and the roots. The weight of peas grows 1 was calculated without this share. The results are presented in Table. 2, where in parentheses are given the data of experiments in which, instead of polymeric esters, known low molecular weight acids at a concentration of 1 and. Mol / l were used. Dashes indicate that the experiments were not conducted. The use of polymeric acid esters will give a higher stimulating effect than the low molecular weight acids themselves, which is apparently determined by their prolonged action, consisting in the gradual release of the active compound in optimal concentrations under the action of water from its polymeric ester. The use of such polymers makes it possible to create on plants with a single treatment a sufficient supply of stimulator that is kept in optimal concentrations for a long time. In the case of using low molecular weight acids as stimulants, such a reserve cannot be created, since an excess of the concentrations of the applied drugs over the optimum causes growth inhibition. t Example 3. Small-scale night experiments were carried out using a preparation prepared} on the 1st as an emulsion in the presence of 1% 5% by weight of the preparation of a surfactant. The treatment with the plant preparation was carried out in the vykolashivan stage. The results are shown in Table. 3. Polymer form of the stimulator gives a very significant increase in yield.

Stimulus tor

Polymer ester on

the basis of 3-indolylprogshonovoy

acids

3- Indolyl propionic acid

Polymer ester based on 3-indolyl butyric acid

3-Indolyl oil on acid

Polymer ester 3-indolyl acetic acid

Polymer ester

1-naphthaceous

acids

Polymer ester

3-INDOLILNR01SHONOV

acids

Polymer ester 3- INDOLL OIL AND ACIDS

Dry weight of plant biomass to salinity control (0.6% NaCl)

100.0

106.5

94.0

102.4

117.2

114.0

138.2

93.4

93.5

104.8

Table

+ 46 + 66 (27)

+44

+123 (41) +36 (13)

+136 (73)

+83 +88 (17) +130 (77)

+36 (23) +36 (13)

0.2627100

Claims (3)

0.3960149 Note: Formula of the Invention The use of polymers of the general formula S, CHj g 1HT -j-CHj-c- - ... - -cn, -cL I -InL I I J / n 0l CHj-CH-CHj-O-C-B, Table 3. 100 44.0 110 48.4 Ze 35 In the case of using low molecular weight 3-indolyl propionic acid instead of polymer, the weight gain of grain was lower by 48%, and the weight of 1000 grains was lower by 5.5% than in the case of the polymer form. (CIS) rV as a plant growth promoter. Sources of information taken into account in the examination 1. N. N. Melnikov and Yu. A. Baskakov. Chemistry of herbicides and plant growth stimulants, M., GHI, 1962, p. 174. J. 2. Ibid, p. 190. 3. High Molecular Compounds. T. HHBM., 1978, No. 4, p. 243 (prototype).