Evizal, Rusdi and Novpriansyah, Hery and Karyanto, Agus (2025) The Effect of Salicylic Acid and Naphthalene Acetic Acid on Reducing Button Shedding in Dwarf Coconut (Cocos nucifera L.). IOP Conference Series: Earth and Environmental Science, 1572 (012027). pp. 1-13. ISSN 1755-1315

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Abstract

Button shedding in coconut (Cocos nucifera L.) is a major factor reducing yield, particularly during the dry season, when shedding levels can reach 70–80%. This research aimed to determine the effect of applying plant growth regulators, i.e. SA (salicylic acid) and NAA (naphthalene acetic acid), as well as their combination, in reducing button shedding in dwarf coconut cv Pandan Wangi. The research was conducted from December 2024 to April 2025 at PT. Great Giant Pineapple, Lampung Tengah, Indonesia. The research employed a non-factorial Randomized Complete Block Design (RCBD) consisting of a control and nine treatments: SA 2 mM with interval 1-weeks; SA 2 mM with interval 2-weeks; SA 2 mM with interval 1-months; NAA 0,5 ml/L with interval 1-weeks; NAA 0,5 ml/L with interval 2-weeks; NAA 0,5 ml/L with interval 1-months; SA and NAA with interval 1-weeks; SA and NAA with interval 2-weeks; and SA and NAA with interval 1-months. The treatments were applied on female flower cluster over a period of two months according to their respective intervals, starting from anthesis. Each treatment was replicated three times, resulting in a total of 30 experimental units. The data obtained were analyzed using homogeneity and additivity tests. Further analysis was conducted using Analysis of Variance (ANOVA), and significant differences among means were tested using the Honestly Significant Difference (HSD) test at the 5% significance level. The results indicated that the application of SA and NAA had a significant effect in reducing button shedding, although it inhibited fruit growth. However, an optimum concentration was found in the combination of SA 2 mM + NAA 0,5 ml/L, which reduced button shedding without inhibiting fruit development. Keywords: Coconut, Button shedding, Naphthalene Acetic Acid, PGR, Salicylic Acid

Item Type:	Article
Subjects:	S Agriculture > SB Plant culture
Divisions:	Fakultas Pertanian (FP) > Prodi Agroteknolgi
Depositing User:	RUSDI EVIZ
Date Deposited:	03 Jun 2026 03:02
Last Modified:	03 Jun 2026 03:02
URI:	http://repository.lppm.unila.ac.id/id/eprint/54858

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