The Canon of Potato Science: 46. Potato Crop Modelling

摘要

Potato crop performance can be described in terms of development and growth. Developmental stages are tuber initiation, tuber growth, maturity, dormancy, sprouting, emergence (after planting), development of leaves, stems and roots. Development is mainly determined by temperature and day length and is variety dependent. These factors determine the moment of organ initiation and the subsequent relative allocation of dry matter to them. Higher temperatures reduce the time between the various stages andshorter photoperiods lead to earlier tuber initiation, more dry matter allocated to the tubers - hence less to the foliage - and earlier maturing crops. Temperatures above the optimum for growth disfavour tuber growth and thus exert an: influence on dry, matter distribution.