Vol. 2 No. 5 (2026): Oktober
Articles

EFFECT OF VARIOUS CONCENTRATIONS OF GROWTH REGULATORS (ZPT) ON THE GROWTH OF MOON ORCHID PLANTS (Phalaenopsis amabilis L.)

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  • Bagas Setiawan,
  • Dewi Ratna Nurhayati,
  • Kharis Triyono
Bagas Setiawan
Universitas Slamet Riyadi Surakarta
Dewi Ratna Nurhayati
Universitas Slamet Riyadi Surakarta
Kharis Triyono
Universitas Slamet Riyadi Surakarta

Published 2026-10-01

Keywords

  • Moon Orchid,
  • Concentration,
  • PGR

Abstract

The Influence of Different Levels of Plant Growth Regulators (PGR) on the Development of Moon Orchids (Phalaenopsis amabilis L.). This research was carried out between June 2025 and August 2025. The study location was situated in Kaligandu Hamlet (RT.02/RW.02), Klepu Village, Pringsurat District, Temanggung Regency, at an altitude of roughly 550 meters above sea level. The aim of this research was to assess the efficacy of different varieties and concentrations of plant growth regulators on the growth of orchid plants. A Completely Randomized Design (CRD) utilizing a singular factor was implemented. The interventions comprised NAA (100, 150, and 200 mg/L), Gibberellin (100, 150, and 200 mg/L), and Benzyladenine (100, 150, and 200 mg/L). The metrics recorded encompassed the quantity of roots, count of new leaves, root length (cm), leaf length (cm), leaf breadth (cm), number of branched roots, and fresh plant biomass (grams). The data were examined by Analysis of Variance (ANOVA). If notable disparities were identified, the analysis proceeded with the Honestly Significant Difference (HSD) test at the 5% threshold. The findings revealed that the PGR treatments exhibited no substantial variations in the quantity of roots, leaves, root length (cm), leaf width (cm), number of branched roots, or fresh plant biomass (grams). A notable distinction was noted in the leaf length measurement.

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