PERMANENT CROPPINO Crop cultivation without FALLOW years. It is compatible with SEASONAL FA.LLOWING (in the dry or cold season). PERT (PROCR~:MME EVALUATION AND REVIEW TECHNIQUE) A manzgem.e%'- tool for defining and integrating events and processes t-at must be accomplished in time to assure completion of pr-,jec t bjactives on schedule. PHASED PLAN: ING, STAGGERED PLANTING Planting :. a given crop over a period of several weeks so as to distribute labour requirements and risks. PHYSICAL FACTORS The more important attributes of the climate and land, i.e. the physical environment, which influence the operation of a FARMING SYSTEM. PILOT FARM A farm on which the COLLABORATING FARMER tries out suggested bt FARMING SYSTEMS RESEARCH, the purpose being testing an.d evaluation rather than demonstration. k changes one of PILOI PRODUCTION PROGRAMME A producti-n programme designed to test how agricultural support systems arn policies function when ne- TECHNOLOGIES or FARMING SYSTEMS are introduced into an area on a significant scale. PLANTATION AGR CULTURE Large-scalf commercial cultivation o- tree crops. PAGE 18