RU1792257C - Composition for fruit trees white washing - Google Patents

Abstract

SUMMARY OF THE INVENTION: water, butadiene-styrene or butadiene nitrile latex of 7-25 wt.%, A thickener of 0.5-3 wt.% Are loaded into the apparatus with a stirrer and mixing is carried out for 0.5-1 hours. If the thickener requires prior swelling, then stand before stirring .1.5-2 hours at 20 ± 5 ° C, and then stirring for 30 minutes. Then, with the stirrer running, 2-10% by weight of urea-formaldehyde resin are charged and mixed for 20 minutes. Then 20-60 wt.% Carbide sludge is charged and mixed for 20-30 minutes until a homogeneous mass is obtained. As a thickener, a carboxymethyl cellulose sodium salt or a 7% polyacrylamide solution is used. The composition has improved protective properties by increasing the biological resistance to sunburn and frost by creating conditions for the formation of anthocyanins in the tissues of the cortex. 1 s, p. f-ly, 2 tablets,

Description

The present invention relates to agriculture, to the field of whitewash compositions for protecting fruit trees from sunlight and the harmful effects of low temperatures. It can be used in industrial collective and home gardening.

; To whitewash fruit trees in order to protect them from sunburn, chalk compositions are widely used with the addition of clay, cow, skim milk, soy milk, casein and wood glues as binders. However, the above whitewash compositions are unstable and are quickly washed away from the trees with rainfall and wet snow.

The whitened composition was fundamentally improved by introducing an aqueous dispersion of polyvinyl acetate as a binder into the chalk suspension.

When dried, a coating of this composition polymerizes and whitewash is insoluble in water, which is difficult to wash off with precipitation.

However, this composition is not hardy and coagulates and loses its consumer properties at temperatures below 0 ° С.

Known whitewash composition for protecting fruit trees from latex-based sunburns, containing white pigments (titanium dioxide, a mixture of barium sulfate with zinc sulfide, known as lithopone), fillers (chalk, silicates) and repellent (tetramethylthiuram acid sulfate) - TMTD).

This composition immediately after application forms on the surface of the cortex a fruit

Xi

Out trees uniform coverage with high reflectivity.

Sunburns form on fruit trees in clear frosty weather in the middle and end of winter. And aqueous whitewash compositions can be applied only at positive air temperature. Therefore, the tree is whitewashed in autumn, beginning from leaf fall to the onset of steady frosts. Plants in autumn develop biological self-protection from sunburn, which is expressed in the acquisition of a violet-reddish color by the bark due to the formation of anthocyanins. The formation of anthocyanins is actively taking place in the bark of trees with good access of light to skeletal organs, starting from leaf fall and before the onset of stable frost. Since the biological self-protection of trees from sunburn is insufficient, an additional protection is applied - whitewashing. The greatest effect in protecting fruit trees from sunburn can be obtained when whitewashing does not prevent the formation of anthocyanins in the autumn.

The analogs of poblarch compositions considered above have the disadvantage that immediately after application they form a coating with a high reflectivity of 80% on the surface of the bark of fruit trees. Such reflectivity of whitewashing is required in the middle and end of winter, and in autumn, high reflectivity inhibits the formation of anthocins, which are formed immediately after application of coatings with high reflectivity and low light penetration, which is a big disadvantage of the side formulations .; ,

The closest in technical essence to the claimed composition is a whitewash composition containing, wt.%:

Water dispersion

binder (copolymer dispersion of vinyl acetate with dibutyl maleate) 45-50

N YG Shniteli; - chalk 20-25

talcum powder .... „...... ..5-7, -...., ......... ,,.,

Pigment (titanium dioxide) 7-10 Cohesive additive (mixture of pentadiols - and triol) 2-2.5 Repellent and fungicide (TMTD) 2.5-4

Thickener (sodium salt of carboxymethyl cellulose) 0.6-0.8 Stabilizer (sodium hexametaphosphate) 0.6-0.8 Water 20-30 This composition forms a hard-to-wash coating with high reflectivity immediately after coating, which is a drawback noted above.

The aim of the invention is to improve its protective properties by increasing the biological resistance to sunburn and frost by creating conditions for the formation of anthocyanins in the tissues of the cortex. The goal is achieved by the fact that carbide sludge and urea-formaldehyde resin are introduced into the composition containing latex in the following ratio of components per dry matter wt.%: Latex 7-25 Urea-mormaldehyde resin 2-10 Carbide sludge 20-60 Thickener 0.5-3.0 Water Rest The composition based on latex, carbide sludge and urea-formaldehyde resin creates a coating with high light transmission after application - 60%, which corresponds to a reflectivity of 40%. Such a coating gradually decreases light transmission due to the influence of rains, while the reflectivity increases accordingly, which creates favorable conditions for the development of biological self-protection and protects the tissue of solar radiation crusts in the middle and end of winter.

The proposed composition for protecting trees is more technologically advanced in manufacture, since it contains a small amount of components, the most mass-intensive of which is carbide sludge, a multi-ton waste product.

The composition is prepared as follows. Latex, thickener are loaded into the apparatus with a stirrer and stirring is carried out for 0.5-1 hours. If the thickener requires preliminary swelling, then, before stirring, hold for 1.5-2 hours at a temperature of 20 ± 5 ° С . Then the stirrer is turned on and stirring is carried out for 30 minutes. Then, with the stirrer operating, urea-formaldehyde resin is charged and stirring is continued for 20 minutes. f 1 after which carbide sludge is loaded, taking into account the contents of D

moisture, and stirred for 20-30 minutes until a homogeneous mass is obtained.

The finished composition is poured into cans.

Examples of the formulation of the composition of the application, control examples, prototype and test results are presented in Tables 1 and 2.

The table shows that the proposed composition for the protection of fruit trees in terms of physical and mechanical characteristics is at the prototype level, and significantly exceeds its content of anthocyanins in the tree bark, which provides higher resistance to sunburn and frost resistance of trees covered with a full composition.

FORMULA AND ZOBRETIN

Claims (2)

1. The composition for whitewashing fruit trees, containing as a binder latex, thickener, filler and water, characterized in that, in order to improve its protective properties due to increasing biological resistance to sunburn and frost by creating conditions for the formation of anthocyanins in the tissues of the cortex; as a binder, latex 5, it contains butadiene styrene or butadiene nitrile latex, carbide sludge, and also urea-formaldehyde, as a filler resin, in the following ratio of 10 components, May. %: Styrene butadiene or buta diene nitrile latex Thickener 15 Carbide sludge Urea formaldehyde resin Water 2. A composition according to claim 1, characterized in that it contains a sodium salt of carboxymethyl cellulose or a 7% solution of full acrylamide as a thickener.  7-25 6.5-3.0 20-60 Rest Latex EN-26 NN (dry - in) Latex SKS-65GP6 (for dry air) Noceaino-Iurie dehydrated resin Carbide silt Sodium sala herbooxymethylcell loei Polyahrilam d-ge (7 solution) Water Vinyl acetate acetate dispersion copolymer with dibutyl maleate. "Ate. Talc Titanium Dioxide Kaalesciruhts additive Relative and fungicide TSHD HexamethasosFat sodium 26 25 26 7 25  "1 210.5 J.5 10 2 60 $ 0 1) 5 60 20 15 65 3.0 0.5 0, 5 0.7 0.5 1.5 - 3.1 W 4.5 Z2.5 2nd, 0 22.0 9. 65.07.5 10.6 -: - - -..- V. - - -. . . . 22 - -, - - ... - - 6 2 3, 0.7 Faty-mmntmIPm and Bulogiches and smyetm Taflitz 2