Biological control of weeds using AAL-toxin
US5256628A · kind A · utility
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3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 31, 1992 |
| Grant date | Oct 26, 1993 |
| Priority date | — |
| Expiry date | Aug 31, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01N63/50
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
It has been discovered that AAL-toxin, a known host-specific phytotoxin produced by Alternaria alternate f. Sp. lycopersici, has a broad range as a pre-emergent or post-emergent bioherbicide. A method using AAL-toxin has been developed for controlling certain weeds, including duckweeds, jimsonweed, black nightshade, prickly sida, redroot pigweed and northern jointvetch. This phytotoxin can be used pure, as a cell-free filtrate, a crude filtrate, or a crude suspension of the culture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.