DE1273249B - Encrustant for seeds - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. Cl .:

Number:
File number:
Registration date:
Display day:

AOIc

German KL: 45 b -1/06

P 12 73 249.9-23 (T 25369)

2nd January 1964

July 18, 1968

The invention relates to a means for encrusting, i. H. for wrapping seeds.

It is known to use multicutial seeds, e.g. B. sugar beet or fodder beet seeds, mechanically split or grind down to produce single-seeded seeds that are used when the plants are raised saved a lot of work. The single-germ seeds, however, often have such a small grain size that their isolation Difficulties when sowing and because of this that caused by splitting or grinding The benefit sought by multicutial seeds is canceled out.

In order to facilitate the singulation of fine-grained seeds, it is also known to incrust the seeds, in order to produce larger single-seeded seeds of roughly the same shape from the seeds, which are unequal in size and shape, and which also grow individually sow with seed drills. The encrustation takes place mainly with small seeds of flowers, vegetables or the like. However, since the wrapping material is moist, it can happen that through the Encapsulation process destroys or severely impaired the germination capacity of the seed by penetrating water will. In particular, the shelf life suffers considerably due to the swelling of the semen.

In order to remedy this situation, according to known proposals, the Add substances to the liquid used to stir the coating agent to prevent penetration to prevent water from entering the cell tissue of the seed, e.g. B. alkali or alkaline earth compounds, Alginic acid or alginates. Such substances must have the same or higher osmotic fluidity Give pressure than corresponds to the mutual suction force of the seed coat and the germinal tissue. However, certain conditions must be taken into account for their selection.

The substance to be used must be physiologically inactive, so it may germinate the enveloped Do not affect the seed. This requirement is important because the one used to regulate the osmosis Substance must be contained in the envelope in a high dose. She is also not allowed to go with the other substances react chemically unfavorable, those of the coating compound to promote the growth of germs or can be added to protect against pests. Due to the chemical inactivity of the osmosis control the substance used, the selection of these other additives is made easier. Also for the seed coat there must be no impairment due to chemical influences. Finally, it is desirable that the substance used to regulate the osmosis of the liquid encrustation agent for seeds

Applicant:

Hildegard Traumann, née Schmidt,

8700 Würzburg, Wölffelstr. 2

Named as inventor:

Dr. E. Reinhard, 8700 Wuerzburg

The viscosity of the coating agent gives it an increased viscosity, making additional binders superfluous power. As a result, the execution of the wrapping process can be significantly simplified and shortened, moreover also the germination of the enveloped

so the seeds are relieved as additional binders usually the desired penetration of water into the casing after sowing Delay the germination process.

The invention is now directed, as a means

as for regulating osmosis when coating seeds to use an additive that best meets these requirements. In well-known The incrustation agent consists of a shell material that has been mixed with liquid, the To prevent the penetration into the cell tissue of the seed, an additive is added which reduces the osmotic Pressure increases, and the invention is characterized in that the addition of sugar alcohol in the form of mannitol or sorbitol. By appropriate dosing of this additive, which depends on the type depends on the seed to be coated, it is possible to obtain the full germination power of the seed, accordingly also to ensure a long-term germination capacity and durability during storage and the wrapping to give favorable mechanical strength. The wrapping process itself is through use significantly simplified by mannitol or sorbitol.

As neutral fillers, for. B. Aerosil, clay, loam, peat, wood flour, sand or the like. Used will. It is particularly advantageous to use mannitol or sorbitol as an osmosis regulator and binding substance here leaves complete freedom.

In a known manner, substances can also be added to the casing which, after sowing Promote the germination of the seed, serve the nutrition of the young seedling, prevent fungal infestation or Against pests, bird damage or the like. Are effective.

■ ■ ■■ 809 570/40

example 1

180 g of mannitol or sorbitol are dissolved in 1000 l of water. In this solution, 200 g of wood flour, 200 g of clay, 20 g of starch and 50 g of sand and 4 g of TMTD stain suspended.

With this suspension, 500 g of beet seeds are gradually added to a rotating coating pan moistened until the resulting shell grains have the desired size. The grains will then dried.

Example 2

250 g of mannitol or sorbitol are dissolved in 10001 of water.

With this solution, 500 g of lettuce seeds are alternately moistened in a rotating coating pan and sprinkled with wood flour until the grains are the desired size.

Example 3 _ao

Be in 10001 nutrient solution to Oagland 180 g of mannitol or sorbitol dissolved.

100 g of petunia seeds are moistened with this solution in a rotating coating pan and Sprinkled with a mixture of wood flour, clay, sand and starch until the grains are the desired Have size. -,.

Claims (1)

Claim: Encrustation agent for seeds, consisting of a coating material that has been mixed with liquid which is mixed with an additive to prevent penetration into the cell tissue of the seed is, which increases the osmotic pressure, characterized in that the additive consists of sugar alcohol in the form of mannitol or sorbitol. Considered publications:
German Patent Nos. 960 241, 919 328, 869, 943 858;
U.S. Patent No. 2,986,840.