OKLAHOMA STATE UNIVERSITY Effective Period: 01/02/2024 - 12/31/2024 Contact: KENDAL HENDERSON ~ KENDALT@OKSTATE.EDU SOIL WATER & FORAGE ANALYTICAL LABO, 045 AG HALL, STILLWATER, OK 74078 Phone: (405) 744-7771 ~ Fax: (405) 744-9575 Endorsements: CERTIFIED FOR MANURE CERTIFIED FOR MANURE CERTIFIED FOR MANURE CERTIFIED FOR MANURE