Growth Biostimulants as Synthetic Hormone Replacements for Rooting, Vegetative Growth and Chemical Constituents Promotion in Rose Cuttings Under Different Growing Media (original) (raw)
https://www.ijrrjournal.com/IJRR\_Vol.7\_Issue.9\_Sep2020/Abstract\_IJRR009.html, 2020
This study aims to determine the effect of concentration and soaking duration of Plant Growth Regulator (PGR) Growntone on rose (Rosa damascena Mill.) cutting growth. This research was conducted at the Experimental Garden of the Faculty of Agriculture, University of Amir Hamzah, Medan, Medan Estate Village, Percut Sei Tuan District with an altitude of ±25 meters above sea level, which was conducted from March to May 2020. This study used a factorial randomized block design (RBD) with two factors studied, namely the first factor was the PGR Growtone concentration, which consisted of 4 levels, namely K 0 (0 mg/10 ml water), K 1 (3 mg/10 ml water), K 2 (6 mg/10 ml water), K 3 (9 mg/10 ml water),and the second factor is the soaking duration for PGR Growtone (L) which consists of 4 levels, namely L 0 (0 minute), L 1 (30 minutes), L 2 (45 minutes), and L 3 (60 minutes). Parameters observed included shoot emergence time (days), shoot length (cm), number of shoots, and root length (cm). The results showed that the PGR Growtone concentration had a very significant effect on shoot emergence time, shoot length, and root length, but did not significantly affect the number of shoots. The best concentration is obtained in the treatment K 3 (9 mg/10 ml water). The soaking duration for PGR Growtone had a very significant effect on shoot emergence time, shoot length at 60 days after planting, and root length. The best soaking duration was obtained in the treatment L 1 (soaking duration 30 minutes). The interaction between the concentration and soaking duration of PGR Growtone only had a significant effect on shoot emergence time, where the best treatment combination was obtained in the treatment K 3 L 1 (concentration 9 mg/10 ml water and soaking duration 30 minutes).