(19)

(11)

EP 0 452 367 A1

(12)

(43) Date of publication: 23.10.1991 Bulletin 1991/43 (21) Application number: 90901471.0 (22) Date of filing: 21.12.1989

(51) International Patent Classification (IPC):  A01N 25/ 02( . ) A01N 43/ 40( . ) A01N 25/ 04( . ) A01N 47/ 18( . ) (86) International application number: PCT/US1989/005794 (87) International publication number: WO 1990/007272 (12.07.1990 Gazette 1990/16)

(84) Designated Contracting States: AT BE CH DE ES FR GB IT LI LU NL SE (30) Priority: 27.12.1988 US 19880290134 21.11.1989 US 19890437057 (71) Applicant: MONSANTO COMPANY St. Louis Missouri 63167 (US)

(72) Inventors: EBE, Conrad, Walter Saint Louis, MO 63146 (US) LEBEAU, Lawrence, Richard New Haven, MO 63068 (US) MARSHALL, Lucia, Garcia-Iniguez Saint Charles, MO 63303 (US) WARNER, James, Michael Webster Groves, MO 63119 (US) (74) Representative: Bosch, Henry, et al  Monsanto Services International S.A. Patent Department Avenue de Tervuren 270/272 Letter Box No. 21 B-1150 Brussels B-1150 Brussels (BE)