LAND JUDGING AND PLANT NUTRITION, A PROGRAMMED INSTRUCTION UNIT, REPORT NUMBER 13.

A UNIT OF PROGRAMED LEARNING MATERIALS WAS PRESENTED ON THE PRINCIPLES AND PROCEDURES OF LAND JUDGING AND PLANT NUTRITION. IN HIS PREPARATION, THE AUTHOR FIRST IDENTIFIED PRINCIPLES AND FACTS NECESSARY FOR EFFECTIVE LAND CLASSIFICATION AND PLANT NUTRITION BY EXAMINING RELEVANT SCIENTIFIC REPORTS. USING THIS INFORMATION, HE THEN FORMED A TEAM OF 16 VOCATIONAL AGRICULTURE TEACHERS TO DEVELOP AND TENTATIVELY EVALUATE THE PROGRAMED MATERIALS. THESE TEACHERS WERE ENGAGED IN EXPERIMENTAL USE OF THE MATERIALS AT THE TIME OF REPORTING, AND EVIDENCE OF INSTRUCTIONAL RESULTS WAS NOT THEN AVAILABLE. THIS VOLUME REPRESENTS PART 13 OF A 13-PART FINAL REPORT ON THE VOCATIONAL-TECHNICAL EDUCATION RESEARCH AND DEVELOPMENT PROJECT OF WASHINGTON STATE UNIVERSITY. RELATED VOLUMES ARE ED 010 652 THROUGH ED 010 664. (JH)