Pengaruh Intensitas dan Konsentrasi GA3 untuk Peningkatan Kualitas Buah Jeruk Siam (Citrus nobilis) Jember

Abstract

This study aims to determine the best intensity and concentration of ZPT GA₃ to improve the quality of Siamese oranges. This research was conducted from November 2022 to April 2023, in Pancakarya Village, Ajung District, Jember Regency, East Java Province. This study used a randomized block design (RBD) with a factorial pattern, the first factor was 3 concentration treatments (K) and the second factor 3 intensity treatments (I), repeated 3 times. So that the total experiment is 27 plants. The treatment used was I1 = 1 spraying; I2 = 2 times spraying; I3 = 3 sprays and K1 = 20 ppm concentration; K2 = Concentration 40 ppm; K3 = Concentration 60 ppm. The test was carried out with the F-test with analysis of variance (ANOVA), if there is a significant difference (F-count value > F-table) then proceed with the 5% DMRT test. The results showed that the combination of using intensity 1 time per 2 weeks (I1) with a concentration of 40 ppm GA3 (K2) showed a significant interaction on fruit volume parameters. However, the difference was not significant in fruit weight.