RU2370936C2 - Method of stimulating growth and development of spring wheat - Google Patents

Abstract

FIELD: agriculture.

SUBSTANCE: seeds and vegetating plants of spring wheat are treated with solution of crezacin with addition of diphenylurea. In case of pre-sowing seed treatment diphenylurea is added in amount 0.025 g/t of seeds, in case of spraying crops in phase of bushing out - in amount 0.003 g/ha.

EFFECT: combined application of crezacin and SPU enhances growth and raises the level of spring wheat yield on 30-40%.

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Description

The present invention relates to agriculture, to the field of crop production.

In 1986, the patented “Method for regulating the growth and development of grain crops” A.S. USSR No. 1427624/2 /, prior. 06/19/1986 based on the use of crezacin - a prototype. Krezacin (triethanolamine salt of cresoxyacetic acid - a non-toxic homolog of 2,4D - 2,4 dichlorophenoxyacetic acid - a highly active auxin) is, in general biological terms, a stimulator of generative development (Yu. S. Korzinnikov, VM Dyakov, VN Kazakova) Plant growth regulators - derivatives of triethanolamine. In the collection of Plant Growth Regulators. L .: VIR, 1989 - S.118-121) / 3 / without any negative manifestations and is therefore included in the “List of pesticides and agrochemicals approved for use in the Russian Federation” (Reference ... 2004) / 4 /.

To increase the effectiveness of this method of stimulating the growth and development of spring wheat, the use of crezacin in conjunction with DPM-diphenylurea is proposed.

It is known the use of DFM as a stimulator of growth and yield of potatoes (Dorokhov V.I., Fedyshin B.M., Pavlyuk G.V. Synthesis of new derivatives of urea as exogenous stimulators of potato growth. // Materials of the 4th international conference. "Growth Regulators and plant development. ”Abstracts of a report by M .: MAHA, 1997. - C.49-51) / 1 /, the use of DFM on spring barley (SU 1834638) is known and the combined use of DFM and krezacin is unknown.

In pre-sowing seed preparation, the DFM consumption is 0.025 g / ton with a liquid flow rate of 25 l / ton of seeds, and for spraying crops the DFM is used in a concentration of 0.1 mg / l or with a liquid flow of 300 l / ha, the DFM flow rate is 0.0030 g / hectare.

The invention is disclosed by the following examples:

Example 1. To stimulate the growth of spring wheat plants, biostimulants are used in pre-sowing seed preparation using the original inlay method - aquahydrophobization based on a 2% PVA emulsion - polyvinyl acetate.

A 2% PVA emulsion is prepared by diluting with water a factory product (50% emulsion) 25 times. Biostimulants are dissolved in a 2% aqueous PVA emulsion and treated with wheat seeds on a PS-10 machine or manually based on a flow rate of 25 l / ton of seeds 1-7 days before sowing. Sowing is done after drying the seeds to flowability.

With early spring sowing - April 26 (at the norm of I and II decades of May), hydrohydrophobization of seeds contributes to the development of more powerful plants (by accumulation of dry biomass), the prototype method with krezacin further enhances plant growth, but the addition of DPM to krezacin increases the effectiveness of krezacin (table one).

Table 1 The effect of presowing seed preparation by the method of hydrohydrophobization using crezacin and DFM on the growth of spring wheat plants Tulunskaya 12, 2007 Option Dry biomass of 60 plants in the earing phase, g Control (no processing) 32.03 2% PVA - background 34.54 Background + crezacin 3 g / t - prototype 36.56 Background + crezacin 3 g / t + DFM 0.025 g / t 38.93 NDS ₀₅ = 3.50 kg / ha

Example 2. Adding to the composition for encrustation of seeds before sowing (2% PVA + Crezacin 3 g / t) and DPM 0.025 g / t significantly increases the yield (table 2), when sowing April 26.

table 2 The effect of the inclusion of DFM in the composition for inlaid (2% PVA + crezacin 3 g / t) on the yield of spring wheat Tulunskaya 12 Option Harvest grain after part-time work on sieves and reduced to 14% moisture, kg / ha Control (no processing) 25.56 2% PVA - background 26.36 Background + crezacin 3 g / t - prototype 27.06 Background + crezacin 3 g / t + DFM 0.025 g / t 27.82 NDS ₀₅ = 0.46 kg / ha

Example 3. The effect of the inclusion of DFM (0.0030 g / ha) in a solution of crezacin for spraying spring wheat Tulunskaya 12 in the tillering phase on yield at the usual May sowing date - May 19, t / ha, is shown in Table 3.

Table 3 Option Grain harvest after cleaning at 14% humidity, kg / ha The control 18.0 Krezacin 10 g / ha - prototype 18.3 Krezacin 10 g / ha + DFM 0.0030 g / ha 18.9 NDS ₀₅ = 0.4 c / ha

Thus, the inclusion of diphenylurea (DFM) in solutions of crezacin additionally stimulates growth and increases the yield of spring wheat both during pre-sowing preparation of seeds and spraying of crops.

Information sources

1. Dorokhov V.N., Fedyshin B.N., Pavlyuk G.V. Synthesis of new derivatives of urea as exogenous potato growth stimulants. // 4th international conference. "Regulators of plant growth and development." Abstracts M .: MAAA, 1997, - S.49-50.

2. Kazakova V.N., Shevelukha B.C., Dyakov V.M., Korzinnikov Yu.S. and others. A method of regulating the growth and development of crops. A.S. USSR No. 1427624, Prior. 06/19/1986 - a prototype.

3. Korzinnikov Yu.S., Dyakov V.M., Kazakova V.N. Plant growth regulators are derivatives of triethanolamine. // Plant growth regulators. L .: VIR, 1989, - C.118-121.

4. Directory of pesticides and agrochemicals approved for use on the territory of the Russian Federation. M .: Agrorus, 2004.

Claims (1)

A method of stimulating the growth and development of spring wheat, including the treatment of seeds and vegetative plants with crezacin, characterized in that diphenylurea is added to the solution of crezacin during pre-sowing preparation of seeds in the amount of 0.025 g / ton of seeds, and when spraying crops in the tillering phase - in the amount of 0.0030 g / ha