Seed pellets and process for their manufacture
US4759151A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 11, 1986 |
| Grant date | Jul 26, 1988 |
| Priority date | — |
| Expiry date | Feb 11, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S47/09
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The seed pellets have a core which contains grains of seed, organic substrate, loess, organic fertilizer, fungicides and, possibly, pesticides, and a wetting agent which promotes surface wettability. At least one bitter substance may also be present and made to cover the core in the form of a coat, or be distributed within the core. The core is furthermore provided, with a semipermeable coat, which consists of at least one starch and/or latex. The loess acts as a binding agent which serves to intimately bind the various constituents of the core to each other, and to act as a water storing agent in addition to the organic substrate. The semipermeable coat also contributes to the improvement and control of water conservation. Thus the pellets may be made to include sensitive seeds too which require much water for germination and/or may be sown in relatively dry regions and, furthermore, are resistant to breakage and abrasion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.