Microenvironment for efficient uptake of fertilizers and other agrochemicals in soil
US9730393B2 · kind B2 · utility
0Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2014 |
| Grant date | Aug 15, 2017 |
| Priority date | — |
| Expiry date | Mar 14, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC05G5/37
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention provides a bead comprising: i) an external zone comprising a super absorbent polymer (SAP) that is capable of absorbing at least about 5 times its weight in water, surrounding ii) at least one internal zone comprising a core that contains at least one agrochemical, wherein the external zone is permeable to oxygen when hydrated, or the internal zone is formulated to release the at least one agrochemical into the external zone over a period of at least about one week when the hydrogel of the external zone is hydrated. The present invention also provides methods of using beads of the invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.