CS267550B1 - Repellent product for protection of crop plants from game animals - Google Patents

Abstract

The solution concerns the composition of a repellent thixotropic preparation for protecting cultivated plants from the bite of animals. The preparation is made of a thixotropic mixture of kaolin clay, ethanol, water, a repellent substance of zinc diethyldithiocarbamate or zinc phenyldiethyldithiocarbamate and a dispersion from the group of acrylate dispersions, copolymers of vinyl acetate-acrylate, styrene-acrylate, polyvinyl acetate. The preparation can be applied by spraying and coating, especially seedlings, not only in the winter period, but also during vegetation and at temperatures below freezing. After drying, the preparation is insoluble in water.

Description

The invention relates to a preparation for protecting plants against the taste of game. Said preparation contains an active repellent component, attached to a carrier medium consisting of a dispersion, an inorganic filler, a coalescent substance and water.

The plants must be protected from damage by the taste of game throughout the year. Repellents have been developed and are used for this purpose, both in the Czechoslovak Socialist Republic and abroad.

For most preparations, the main repellent components are tars, asphalts, raw materials for petroleum or coal processing, vegetable or animal oils, natural or synthetic resins, residues of distillation of higher fatty acids. In addition, certain types of repellents 1 based on dispersions, e.g. butadiene styrene, are mentioned in technical publications and prospectus materials, and tetramethylthiuram disulfide is most often mentioned as a repellent component. Physico-chemical properties allow their use only during dormancy. In addition, water-soluble products degrade with frost.

These shortcomings are overcome by the compositions according to the invention. The subject of the invention is a preparation for the protection of vegetation against the taste of game, which forms a thixotropic mixture, comprising:

- 20% by weight of dispersion based on acrylate, vinyl acetate-acrylate copolymer, styrene-acrylate, polyvinyl acetate

- 35 Of kaolinic type filler

- 15 7. ethanol

- 45 7. water.

- 10 7. Repellents based on:

a / N, N-diethyldithiocarbamate zinc, b / Ν, Ν-phenylethyldithiocarbamate zinc ad a / N, N-diethyldithiocarbamate zinc

ad b / N, N-phenylethyldithiocarbonate zinc

In essence, these are substances with the following properties:

property a /

state spec, mass g / cm 3 m.p. solubility solid white powder 1.50 175 chloroform acetone, benzene firmly white powder 1.46 203 chloroform

The proposed repellent preparation can be advantageously applied by spraying and painting, especially seedlings, not only in winter, but also during vegetation.

The dispersion-suspension colloidal system is dilutable with water and, after drying, is insoluble in water. Therefore, application at temperatures around freezing is not excluded. Storage temperature can be up to -10 ° C. The thixotropic properties of the repellent limit its flowability and ensure that a larger volume of the preparation is captured on the plant. The use of protective hydrophilic colloids

CS 267550 01 forms an adhesive film on the surface of the polymer parts, preventing the repellent layer from breaking. The admixture of coalescent substance improves its adhesion to the substrate, increases drying and abrasion resistance and frost resistance. It is possible to protect 1 wet seedling.

The presented recipes were designed and tested on the basis of preliminary orientation tests and their evaluation in VŮLHM J1 fishing ground-Strnady.

Example 1.

acrylate copolymer dispersions 15.0 wt. AND kaolin KD. 35.0 AND Zinc, β-diethyldithiocarbamate . 5.0 % denatured ethanol 5.0 of water 40.0 of Example 2. dispersion based on vinyl acetate-acrylate copolymer 15.0 wt. AND kaolin KD 23.0 OF Zinc, β-diethyldithiocarbamate 7.0 of denatured ethanol 10.0 of water 45.0 of Exit 3. dispersion based on styrene-acrylate copolymer 15.0 wt. of Wi earthenware 23.0 of Ν, Ν-phenylethyldithiocarbaman zinc 7.0 of ethanol denatured 10.0 F· water 45.0 of Example 4. polyvinyl acetate dispersion 15.0 wt. of kaolin KD 23.0 ” of Zinc N, N-phenylethyld1thiocarbaman 10.0 of denatured ethanol 15.0 of water 37.0 of Example 5 dispersion based on styrene-acrylate copolymer 15.0 wt. of Wi earthenware clay 35.0 of Zinc, β-diethyldithiocarbamate 7.0 " of denatured ethanol 10.0 of water 33.0 of Example 6 acrylate copolymer dispersions 20.0 wt. of kaolin KD 20.0 of Ν, Ν-diethyldithioca zinc rbaman 7.0 of denatured ethanol 10.0 of water 43.0 of Repellent preparation technology:

All mentioned types of repellents were prepared as follows. The stirred vessel was first soaked and weighed with water, then ethanol and, with constant stirring, kaolin (.mu.l), the repellent component and finally the dispersion were added in succession. After the addition of the dispersing component, the repetent is mixed again and a sample is taken for evaluation.

Evaluation of properties of testing regelents:

Table - see page 4

The evaluation of the properties of the tested repellents was performed in the δ tests. 1, 3, 4, 6, 7 and 8 in the laboratory, while evaluation of tests δ. 2, 5, 9 and 10 were verified in practice, δ. 10 practically and in the laboratory.

Due to the fact that these are essential tests, we specify their evaluation:

Efficacy was evaluated in VÚMLH Prague by measuring the repellency test on hares reared in corks, measuring the average consumed repellent food in relation to the average of maximum consumed non-repellent food in% by weight and on the other hand in experimental forest facilities in VÚMLH against the taste of deer, hares and rabbits.

The application by spraying was evaluated practically in VÚMLH Prague during spraying of the forest stand in such a way that the samples of the tested repetent were diluted in the ratios 3: 1 with water and 5: 1 with water and the stand was sprayed. For spraying flats, busy knapsack sprayers with a diaphragm pump and a nozzle with a diameter of 1.2 mm and sieves with a mesh size of 0.8 mm are used.

Phytoxicity assays were performed in two ways. .

a / Laboratory evaluation on experimental animals / rabbits, mice / in CGPNP HE Prague; b / practical tests on three - year - old and four - year - old conifers / spruce, fir, pine, bruise / also on other forest stands / oak, linden, lilac /.

Thixotropy was evaluated by practical tests of individual repellent application technologies, ie by dipping, brushing, wiping with gloves and after dilution with water (3: 1 and 5: 1) by spraying. With all the applied technologies mentioned, the repellent must not run down the tree trunk.

As can be seen from the above overview, said formulations appear to be very good repellent preparations because: a / they show very good repellent properties;

b / their phytoxicity is negative;

c / due to suitable thixotropic properties they show good application properties;

At the same time, the use of the KD kaolin filler, in contrast to the use of the Wi earthenware filler, allows the application of all technologies.

These facts were confirmed when testing the samples δ. 2 and 4 and its comparison with other types of repellents. For comparison, three domestic and one foreign product / TIRAM from the GDR / were tested. The evaluation was carried out in VÚLHM Jí lovíště-Strnady and the Ministry of Forestry and Water Management of the Czechoslovak Republic.

As the results of practical and applied tests have shown, the advantages of the new repellents are: · a / possibility of use not only in winter, but 1 during vegetation; b / phytoxic safety; c / / net repellent efficiency, up to 100%, while in other compared repellents it ranged from 83.7 to 95.0%.

The repellent preparation according to the invention can be used for plant protection in forestry, fruit growing and viticulture. It is completely harmless to wildlife and the possibilities of application already in the period of vegetation have achieved plant protection even in the winter for up to 7 months.

Table for evaluating the properties of tested repellents

55 s • Properties Individually recipes 1 2 3 4 I = 6 * 3a rva gray-white gray-white beige gray-white ¹ beige gray-white 2 Efficiency '/ repulsion / effective very effective very effective very effective very effective very effective 3 For the owl ha vo s t / dries / slowly fast fast and fast fast fast 4 Rozti ra vos t very good very good good i and very good . Good very j good < 5 Spray application suitable ' suitable clogs suitable nozzles i clogging the nozzles suitable 6 Frost resistance -10 ° C -5 ° C satisfies and meets i meet e meet e suits '7 Adhesion to the substrate very good very good and very ( good j very good very good 1 very good 8 Abrasion very good very good good ί i very good very good very good 9 Phytoxicity negative negative negative] negative nega tivni negative! 10 T i xotropi e satisfies satisfies AND complies satisfies satisfies meet e

OBJECT OF THE INVENTION

Claims (1)

A repellent thixotropic preparation for protecting cultivated plants against the taste of game, comprising an active repellent component bound to a carrier medium, characterized in that it consists of 15 - 20 wt. % of a substance from the group comprising acrylate dispersions, vinyl acetate-acrylate copolymer, styrene-acrylate and polyvinyl acetate, 20-35 wt. % clay of kaolin type, 5 - 15 wt. X ethanol, 33-45 wt. X of water and 5 - 10 wt. % of a repellent component based on zinc N, N-diethyldithiocarbamate or zinc N, N-phenylethyldithiocarbamate.