(19)

(11)

EP 0 608 407 A1

(12)

(43) Date of publication: 03.08.1994 Bulletin 1994/31 (21) Application number: 93918493.0 (22) Date of filing: 29.07.1993

(51) International Patent Classification (IPC):  A01N 63/ 00( . ) A01N 63/ 04( . ) (86) International application number: PCT/US1993/007143 (87) International publication number: WO 1994/004034 (03.03.1994 Gazette 1994/06)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 19.08.1992 US 19920932261 (71) Applicant: EcoScience Corporation Worcester, MA 01605 (US)	(72) Inventors: GUNNER, Haim Amherst, MA 01002 (US) KANE, Jeffrey Belchertown, MA 01007 (US) DUAN, Hongyu Amherst, MA 01002 (US) (74) Representative: Bassett, Richard Simon  ERIC POTTER & CLARKSON St. Mary's Court St. Mary's Gate Nottingham NG1 1LE Nottingham NG1 1LE (GB)