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(11)    Patent No :    AP 2051   
(21)    Application No :    AP/P/2005/003203   
(22)    Filing Date :    03.07.2003   
(24)    Date of Grant &    01.10.2009   
           
(45)    Publication :

(30)  Priority Data       
(33) Country    (31) Number    (32) Date
US    60/393,481    03.07.2002

(84)    Designated State

GM    GH    KE    LS   MW  MZ   SL   SD   SZ
T Z    UG    ZM    ZW
 
(73) Applicant(s)

CENTRO INTERNACIONAL DE MEJORAMIENTO DE MAIZ Y

TRIGO,  P O Box 60362, Houston, Texas, 77205,
United States of America

BURNET Michael William, Paul-Ehrlich-Strasse 15,
Tübingen, 72076,

Germany
GRESSEL Jonathan, 15 Hayarden Street, 76604 Rehovot,
(72) Inventors
Israel

BURNET Michael William, Germany

KANAMPIU Fred, Kenya

GRESSEL Jonathan, Israel

et al

(74) Representative

FISHER CORMACK & BOTHA

(51)  International  Classification   A01N 25/10 (2006.01)    A01N 25/26 (2006.01)
A01N 43/50 (2006.01)   

(54)    Title
A slow-release agrochemicals dispenser and method of  use.

(57)    Abstract

Acetolactate synthase inhibitors, such as imazapyr and pyrithiobac and mixtures thereof, prepared as slow -release formulations are useful for the preparation of seed dressing, seed priming, seed or particle-substrate coating herbicidal compositions for control of parasitic weeds such as Orobanche spp.,

Striga spp. and Alectra spp. The use of agrochemicals can be rendered more efficient when coated or bound as a slow release formulation. Particles used as the substrate to be coated may be plant seeds or particles made of a strong or weak ionic resin or a biodegradable carbohydrate natural polymer, a modified polymer, or artificially lignified cellulose. The herbicidal formulation may be covalently linked or adsorbed to the surface of the particle. The same slow release formulations are invaluable for preventing rapid herbicide

(56)    Documents Cited :    US 6 214 769 A    US 4 814 183 A    US 3 813 236 A    US 4 729 190 A    US 5 652 196 A

US

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