DE1033455B - Method of wrapping seeds - Google Patents

Description

GERMAN

It is already known to use seeds from various crops, for example seeds from sugar beet, Onions, carrots, cabbage, grass, etc., to be provided with a coating. Main purpose of this Measure is a uniform calibration and, if necessary, an enlargement of the seeds or To achieve fruits, thereby a better sowing ability of the seeds and thus savings Achieve seeds and labor.

It is also already known that such coatings contain nutrients and active ingredients as well as pesticides to add. However, it has been shown that such wrappings in many cases prolonged storage reduce the ability to germinate in an undesirable and impermissible manner.

The invention has set itself the task of avoiding this disadvantage in particular. You achieved this goal in that the coating substance with the help of λΌη hydrogen peroxide on the germination of the different cultures adapted redox potential is brought.

Here, the coating substance can be preferably set to an optimum for the different crops p _H value. In beet seed can this _pH value above 7, preferably from 7.5 to 8.5, and are to be adjusted by means of potassium silicate solution and / or alkali solution. Such a potassium silicate solution can also be used as a binder for the coating substance in addition to a cellulose derivative in a suitable proportion. Wood flour and / or peat can also be added to this, which have particularly good water-storing properties and also shield the seeds in the field from high fertilizer salt concentrations. It is also possible to use other such substances, in particular organic substances, which have the same properties. It is essential that the properties of these substances correspond to those of the natural coating substance of a seed with regard to the ability to absorb and store water in the soil. As a result, the emergence of the field is more secure, even in unfavorable weather conditions, which is one of the essential prerequisites for the coating of seeds. These water-storing materials form the main percentage of the coating substance, which can also contain any additives, in particular nutrients and active ingredients, e.g. B. to promote youth growth, suitable trace elements and pesticides.

In the following are some exemplary embodiments for the composition of such coating substances given according to the invention:

Method of coating seeds

Applicant:

Seed and Harvest Technology GmbH,
It ch ways

example 1

1000 g beta monogerms

1100 to 1200 g wood flour, loess clay, peat powder

Mixture (10: 4: 3 parts by weight)
1400 to 1500 cm ^{3 of} a 0.6% strength aqueous solution

a cellulose derivative
85 cm ³ potassium silicate solution, 34 ° Be
10 cm ^{3 of} hydrogen peroxide solution
70 g CaCo ₃

260 cm ³ Fournier cold glue, 20% aqueous solution, trace elements, active ingredients and nutrients.

Example 2

1000 g beta monogerms
500 g peat powder
1400 to 1500 cm ^{3 of} a 0.6% strength aqueous solution

a cellulose derivative
2 to 10 cm ^{3 of} hydrogen peroxide solution
150 g CaCo ₃

80 cm ³ potassium silicate solution, 34 ° Be
150 to 200 cm ³ Fournierkaltleim, 2O ° / o aqueous solution of alkali solution to adjust a p _H of the water-saturated case of 8 to 8.5.
The application of the coating substance to the seed takes place according to methods such as are known, among other things, in the coating technique. For example, you can proceed according to the above examples for piling in such a way that the specified amount of seeds is placed in a coating pan of the appropriate size. The specified amounts of wood flour, peat powder or mixtures of these substances with one another or with loess loam are added in small portions in the course of the following paving process. A viscous solution or mixture is produced from the other specified binders and other additives. This is blown into the coating pan with the help of a spray gun and the process continues in this way until the consumption of the

809 559/416

specified amounts carried out in such a way that the individual particles of the seed are evenly round in Pearl shape are surrounded by the shell substance.

The applied layers can have compositions which differ from one another by For example, the inner layers are made exclusively or to a greater extent from pesticides, There are active ingredients, etc. and the outer layers are mainly water-storing Contain material and binding agent as well as nutrients and trace elements. The substances used allow a quick coating process, which in connection with the easy drying of the Materials allows a high output of coated seeds per unit of time.

Before or during application, the coating substance is brought to a redox potential adapted to the germination of the various types of culture, for example with the aid of an appropriate addition of hydrogen peroxide. In most cases, it is essential to pay attention to the coating substance during the approach of the serving for covering the seed mixtures also on the _pH value, which should for example be above 7 beet seed, in particular between 7.5 and 8.5.

The advantages of the content of water-storing materials in the coating substance are particular it can be seen that the germinability of the seeds through the coating according to the invention also is not significantly reduced in the case of longer storage, since the seeds have sufficient respiration is made possible. Enveloping substances according to the invention are significantly lighter in weight than known ones Coating substances. For example, the weight of beet seed is determined by a casing according to the invention only about doubled, while the known coating substances tripled to quadrupled the weight of the seed.

The coating substance according to the invention also has high elasticity and strength, see above that the piled seeds have a low tendency to break having.

Claims (6)

Patent claims: 1. A method for coating seeds, since ^j is characterized in that the coating substance used is brought to a redox potential adapted to the germination of the various types of crops with the aid of hydrogen peroxide. 2. The method according to claim 1, characterized in that the enveloping substance used is adjusted to an optimum for the different crops p _H value. 3. The method of claim 2, particularly for wrapping beet seeds, characterized in that the coating substance used at a p _H ~ value of greater than 7, is preferably set to 7.5, to 8.5. 4. The method according to claim 2 or 3, characterized in that the alkalization by Potassium silicate solution and / or alkali solution is effected. 5. The method according to any one of the preceding claims, characterized in that a'ls Binder a cellulose derivative and potassium silicate solution side by side in a suitable proportion Find use. 6. The method according to claims 3 and 4, characterized in that wood flour and / or peat is added to the coating substance. Considered publications:
German Patent Nos. 695 908, 648357;
German patent application 0 1684 IVa / 451 (published on July 16, 1952);
U.S. Patent No. 2270 518. © 809 559/416 6.58