SU715080A1 - Plant growth stimulator - Google Patents

Description

The invention relates to agriculture, in particular to means for stimulating the growth of plants.

The use of chlorocholine chloride (TUR) as a plant growth stimulator 1 is known.

It is also known to use 2,4-dioxy-6-pyrimidinecarboxylic (orotic) acid as a plant growth promoter 2. However, the spectrum of the stimulating activity of known stimulators is not wide enough. For example, they do not stimulate the growth processes of oats.

The aim of the invention is to expand the range of plant growth stimulators with high activity and a wide spectrum of action.

This goal is achieved by using 4,6-pyrimidine dicarboxylic acid as a plant growth promoter.

4,6-pyrimidine dicarboxylic acid is obtained by oxidation of 4,6-dimethylpyrimidine with potassium permanganate 3.

Example I. The study of lettuce and oats.

The activity of 4,6-pyrimidine dicarboxylic acid was studied at a concentration of 0.01 and 0.001%.

A portion of the drug (37 mg) was dissolved in 10 ml of water or acetone. I ml of the test solution was pipetted with a solution and poured into sterilized Petri dishes of size 80 X 15 mm. Then a 0.75% aqueous solution of agar (36 ml) was added to Petri dishes.

Sowing of seeds was carried out the next day (during this time, acetone volatilized from the agar).

Seeds of 10-12 pieces were laid out on the surface of the agar, after which the cups were covered with lids and placed in a thermostat for 3 days at 24-25 ° C and left for 3-4 days in a hood at room temperature, good lighting and humidity 70-80%. On the 9th day after the start of the experiment, the length of the roots, stems and leaves of the seedlings was measured.

In the control variant, the seeds were kept in the same way.

The test results are shown in Table. one.

Compared with the control, the drug stimulates the growth of roots, stems, lettuce and oats. The length of the roots of lettuce is also significantly longer.

The effect of the drug on the growth of lettuce and oats is given in Table. one.

Stimulating the growth of lettuce stems is somewhat weaker than orotic acid, however, with the better development of the root system in the initial period of growth, thereafter, the best development of the aerial part of plants is usually noted.

The optimal concentration for the conditions of this test is only 0.01%.

Example 2. The study of tomatoes, cultivar "Stambova.

4,6-pyrimidine dicarboxylic acid was tested on plants grown in 10 l polyethylene vessels.

Before sowing, seeds were soaked in aqueous solutions of the preparation and the standard (orotic acid). The exposure time is 24 hours. In the control variant, the seeds were soaked in water.

A diagram of the experiment and data on the effect of the drug on the growth and development of plants are given in Table. 2

As can be seen from the table, the drug stimulates the germination of seed tomatoes. Germination is higher by 12-21% compared with the control and 3-11% compared with the standard.

Under the influence of the drug, the best plant growth in the initial phases of development is noted. Both the preparation and the standard have a specific effect on the development of tomatoes. They somewhat delay the onset of flowering and the formation of plants, but they intensify the growth and ripening of fruits.

This leads to the fact that the start of fruit harvesting is not delayed. In the first two harvests, the number of fruits of technical ripeness is much higher than in the control variant. The advantages of the preparation in comparison with the standard are manifested in the fact that the germination of seeds increases, the growth and development of plants improves, an additional number of fruits are formed. During the harvest period from August 26 to September 17

o The increment of experienced options is 15-21% compared to the standard.

Example 3. Laboratory field experiments. Investigation of wheat, variety “Kharkov 46.

 Before sowing, the seeds were treated with aqueous solutions of the drug and the standard of different concentrations. The consumption rate of the solution was 40 ml per 1 kg of seed.

The drug has contributed to better growth.

0 and the development of wheat, which provided an increase in grain yield. The results are shown in Table. 3

The yield increase amounted to 4.1 centners per hectare, which is higher by 2.9 centners per hectare in the analogous version of the experiment with the standard.

The proposed compound is less toxic than its analogs and widely used plant growth regulators, it is more active and has a wider spectrum of action than orotic acid. Under the influence of the drug, germination of seeds of tomatoes increases, fruit yield increases by 15-21%. The yield increase of grain of wheat wheat reaches 4.1 c / ha (standard 2.6 g / ha). The proposed compound can be used in cases where the known growth stimulants are inferior in their activity to the proposed compound.

Table 1

4,6-Pyrimidine-0,01130

boom acid

0,00163

Orthoic acid

0.01 110 121 O, O01 67 86

122

124 105 107

92

76 101 94

Claims (3)

The effect of the preparation on the yield of wheat grain. Formula of the invention. The use of 4,6-pyrimidine dicarboxylic acid as a stimulator of plant growth. Sources of information taken BO attention in the examination Table 3 1. Retordants. Agricultural encyclopedia, vol. 5, “Sovetsk Encyclopandi. M., 1974, p. 390. 2. Kraushaar-Baldauf E. and Rotta L., Arzneimittel-Forsch, 8, 300-1 / 1958. 3. R. R. Ntsp1, I. F. W. Me. Omie and E. R. Sayer, J. Chem. Soe., 1959, 525.