THE EFFECT OF NATURAL GROWTH REGULATORS AND SOAKING TIME IN INCREASING GROWTH OF RED GINGER (ZINGIBER OFFICINALE RUBRUM R.) RHIZOME SHOOTS IN PEAT SOIL

Abstract

This study aims to determine the growth response of red ginger rhizome shoots to the administration of Natural Growth Regulatory Substances (ZPT) Moringa leaf extract and mung bean sprout extract combined with long soaking time on the growth of red ginger rhizome shoots. The research design used was a completely randomized design (CRD) factorial 2 factors with 5 replications. The first factor was the administration of a Natural Growth Regulatory Substance solution (moringa leaf extract and mung bean sprouts) with 4 levels namely: Z0 (0 g/L water), Z1 (Moringa leaves 300 g/L water), Z2 (mung bean sprouts 300 g/L L water), Z3 ( moringa leaves 150 g/L water + mung bean sprouts 150 g/L water). The second factor is the length of immersion time with 4 levels namely: L0 (0 hours), L1 (6 hours), L2 (12 hours), L3 (18 hours). The results showed that there was an interaction between the administration of Natural Growth Regulatory Substances and the length of soaking time on shoot height (17.3 cm), shoot diameter (5.07 mm). Administration of Natural Growth Regulatory Substances Moringa leaf extract (150 g/L water) and mung bean sprout extract (150 g/L water) gave the best results for all variables of observation of sprouting time, number of shoots, shoot diameter and number of taproots. Natural ZPT of mung bean sprout extract 300 g/L water gave the best results on shoot height. While the length of soaking time (6 hours) gave the best results on the observation variables of sprouting time, shoot height and bud diameter of red ginger rhizome.

Keywords

• soaking time
• red ginger rhizome shoots
• natural growth regulatory substances