DESIGN AND PLANNING OF LONG-TERM EXPERIMENTS

Long-term experiments (LTE) are extremely varied in form, and scientis ts who undertake this type of experiment face many challenges. Aspects of management, design layout, the role of the coordinator and statist ician, and computer use are discussed. The important statistical ideas for LTE are reviewed and related to single perennial crops such as wi ld blueberries, fruit trees and permanent pastures.