RU2472332C1 - Method of stimulation of seed germination - Google Patents

Abstract

FIELD: agriculture.

SUBSTANCE: invention relates to the field of agriculture. The method includes presowing seed treatment with a stimulant, which is carried out for 2 hours with an aqueous solution of tris (2,2-dichlorcyclopropylmethyl) thiophosphate with a concentration of the active ingredient of 0.001% at a dose of 1 litre per 1 kg of seeds.

EFFECT: method enables to improve the germination energy and germination capacity of seeds, as well as to accelerate the ripening of crops.

1 tbl, 1 ex

Description

The invention relates to the field of agriculture and can be used to improve the sowing qualities of seeds of grain crops.

It is known the use of polyhexamethylene guanidine hydrochloride (PHMG) as a stimulator of growth and development of crops, as well as methods of stimulating growth and development, including presowing treatment of seeds with spraying MGMG [1].

A known method of stimulating seed germination, comprising treating the seed with sodium selenate [2].

There is a method of presowing treatment of clover seeds with brine of the natural mineral bischofite sulfate type [3].

A known method of presowing treatment of soybean seeds, including presowing treatment of seeds with brine of the natural mineral bischofite sulfate type [4].

A known method of stimulating the growth and development of clover plants, including presowing treatment of seeds with an aqueous solution of sodium selenate.

A known method of presowing treatment of seeds, comprising exposing the seeds to a liquid medium containing a seed germination stimulator, wherein sodium salts of alkyl aromatic sulfonic acids are used as a stimulator.

Known methods can increase the energy and speed of seed germination, but are difficult to prepare and involve the use of more expensive drugs.

The invention is aimed at creating a method that stimulates the germination of seeds of grain crops.

The technical problem solved by the invention is to expand the range of methods for stimulating seed germination, increasing the energy of germination and germination of seeds of grain crops.

The technical result is to increase the energy of germination and germination of seeds, accelerate the onset of ripening of crops, as well as expanding the arsenal of funds for this purpose.

This is achieved by the use of tris (2,2-dichlorocyclopropylmethyl) thiophosphate C ₁₂ H ₁₅ Cl ₆ O ₄ S of formula (I) as a means of increasing the germination energy and germination of cereal seeds.

The proposed stimulant is an oily liquid, sparingly soluble in water and highly soluble in ordinary organic solvents.

The structure of tris (2,2-dichlorocyclopropylmethyl) thiophosphate was confirmed by IR and ¹ H NMR spectra, and the composition by elemental analysis. In the IR spectrum, the three-membered cycle is characterized by absorption bands of С-Н and С-Сl bonds 3085-3090 and 750-755 cm ^-1 . The ether POC group is manifested in the form of intense bands in the region of 1040-1080 cm ^-1 , and the phosphoryl group is 1270 cm ^-1 . In the ¹ H NMR spectrum, the protons of the cycle appear as a doublet δ 1.62 ppm, ³ J (LV) 9.2 Hz (CH ₂ ) and a multiplet with δ 1.66 ppm (CH). Oxymethylene protons are magnetically nonequivalent; therefore, they give doublets in the spectrum of doublets with δ 3.78 ppm, ² J (HH) 9.8 Hz, ³ J (HP) 8.0 Hz and multiplet with δ 3.98-4.06 ppm.

Example. Priokskaya wheat seeds and Bezenchukskaya rye seeds were soaked in distilled water (control) and in 0.01%, 0.005%, and 0.001% aqueous solutions of tris (2,2-dichlorocyclopropylmethyl) thiophosphate for 2 hours at the rate of 1 liter of solution per 1 kg of seeds. The determination of germination and germination energy was carried out according to GOST 12038-84 “Seeds of agricultural crops. Germination determination methods. " The accounting of germinated seeds was carried out in two terms (on the third and seventh days) in accordance with GOST (table).

Table The effect of aqueous solutions of tris (2,2-dichlorocyclopropylmethyl) thiophosphate on the germination energy and laboratory germination of cereal seeds Culture Concentration,% Germination energy,% Laboratory germination,% Variety wheat "Priokskaya" 0 (H ₂ O) 80 86 0.01 78 85 0.005 79 88 0.001 83 90 Rye varieties "Bezenchukskaya" 0 (H ₂ O) 77 83 0.01 77 81 0.005 78 83 0.001 80 87

It follows from the table that, when seeds were treated with a 0.001% aqueous solution of tris (2,2-dichlorocyclopropylmethyl) thiophosphate, the germination energy increased by 3.0% (Priokskaya wheat) and 4.0% (Bezenchukskaya rye ”), And laboratory germination is increased by 3.0% (Priokskaya wheat) and 4.0% (Bezenchukskaya rye).

Thus, the use of a stimulant for pre-sowing treatment of grain seeds containing tris (2,2-dichlorocyclopropylmethyl) thiophosphate can increase the germination energy and germination of wheat seeds of the Priokskaya variety and rye of the Bezenchukskaya variety, which accelerates the start of crop maturation.

Information sources

1. RU No. 2374254 C1, cl. C07F 1/08, A01N 55/02, 05.26.2008.

2. RU No. 2283317 C1, cl. C07F 9/38, A01N 57/18, A01P 21/00, 03/21/2005.

3. Application 2009135931/04, cl. А01N 57/22, А01Р 21/00, C07F 9/40, 09/28/2009.

4. Application 2009140526/04 (057622), cl. А01N 59/20, А01Р 21/00, 02/02/2009.

Claims (1)

A method of stimulating seeds of grain crops, including pre-sowing seed treatment with a stimulator, characterized in that the seeds are stimulated for 2 hours with an aqueous solution of tris (2,2-dichlorocyclopropylmethyl) thiophosphate with an active substance concentration of 0.001% at a dose of 1 liter per 1 kg of seeds.