Potato seed production of G2 from plantlet cutting by setting of population, spacing, and mulch

Abstract

Quick multiplication of potato seeds using plantlet cuttings outside of screen house can accelerate the availability of high quality seeds, especially G2 seeds. However, some obstacles are faced, especially the low adaptation rate of plantlet cuttings. This study aimed to increase the production of potato seed G2 from plantlet cutting by using various population number per hole, spacing, and plastic mulch. The study used a randomized completed block design with three treatment factors and six replications. The first factor was the population number (1, 2, 3, and 4 cuttings per hole). The second was spacing in row (20 and 30 cm). The third was the usage of mulch (yes and no). The results showed that the technology combination of four cuttings per hole, spacing in rows of 30 cm, and mulch had the largest number of total and medium tubers per plant. The population at a planting distance of 30 cm which was reduced in this treatment could be increased by increasing the number of cuttings per hole, so that the total number of tubers remained high, especially when using mulch. Single cutting in no mulch and wider spacing would promote much number of large tubers.