Studies on the Improvements of Potato Culture with Suitable Age by Using Seed Tubers : III. Factors concerned with the Suitable Age of Seed Tubers

Abstract

With the advancement of the age potato seed tubers, the sprouting and growing processes hastens with decreasing productivity. Therefore, it is of vital importance to get high and profitable yield to plant seed tubers with suitable age. Off aged seed tubers result in the so-called runing-out which lowers the yields extraordinally. Suitable age of seed tubers is assumed to be 2∼5 months depending upon the varietal characteristics and cultural purposes. The earlier in maturity and shorter in rest the varieties were the lower in age and reverse for late varieties. For early crops high age is preferable, while for the main crops the lower age is better. Contributions from the Laboratory of Plant Breeding, Hyogo Agr. College. No. 35