Uses members of the Cruciferae family such as radishes (Sp. Raphanus), to describe a process termed allelopathy by which a plant uses a chemical compound that escapes into the environment to harm another plant. Tips are provided for easy use in the classroom. (ZWH)

This agricultural curriculum guide on horticulture for secondary students is one of six developed for inservice teachers at Marianas High School in Saipan. The guide provides the rationale, description, goals, and objectives of the program; the program of studies and performance objectives by levels; samples of lesson plans for effective delivery…

A horticultural core curriculum and draft copies of three horticultural cluster curricula are provided. Materials related to the curriculum development project appear first. The core curriculum is designed to provide broad initial instruction in horticulture for students in the first year of a secondary-level vocational horticulture program. The…

This publication is designed to provide a core of instruction for the many different fields in agricultural/horticultural education. This course contains 21 instructional units that cover the following topics: introduction to horticulture; beginning a career in horticulture; hand and power tools; introduction to safety; growing facilities;…