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INDUKSI RESISTENSI MENGGUNAKAN BIOSTIMULAN SEBAGAI PENGENDALIAN PENYAKIT CERATOCYSTIS PADA TANAMAN DUKU (Lansium domesticum Corr.) DI SUMATERA SELATAN

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ABSTRACT Ceratocystis wilt, which attacks duku plants (Lansium domesticum), has become one of the main factors contributing to the decline in duku production in South Sumatra in recent years. The pathogen Ceratocystis fimbriata is known to be aggressive, easily spread, and difficult to control using conventional methods, thus requiring more environmentally friendly control strategies, one of which is thru resistance induction using biostimulants. This research aims to evaluate the effect of three types of biostimulants: shrimp shell extract (EKU), kencur rhizome (RKC), and turmeric rhizome (RKY) at four concentrations (P0, P1, P2, P3) in inducing plant resistance and suppressing pathogen growth in vitro and in vivo. The research was conducted using a Factorial Randomized Block Design (FRBD) with 10 treatment combinations and 5 replications. The in vitro test was conducted using the filter paper method on MEA medium, while the in vivo test was performed by applying the biostimulant to the duku seedling stems before pathogen inoculation. The research results show that the effect of the biostimulant began to take effect on the fifth day, marked by the largest colony growth reduction in RKY-P3 and RKC-P3, while the control showed the highest mycelium growth. In field trials, treatment RKC-P1 showed the lowest mortality rate (20%) and the lowest disease intensity compared to other treatments. Conversely, the control group experienced the most severe damage, including total wilting, elongated lesions, necrosis, and thick mycelial plugs. These results indicate that biostimulants are able to activate plant defense mechanisms, thereby suppressing disease development. Overall, biostimulants, particularly kencur rhizomes and turmeric rhizomes at high concentrations, have strong potential as resistance-inducing agents and could be a biological control alternative for suppressing Ceratocystis disease in duku plants. Keywords: conventional, inoculation, in vitro, in vivo, mycelium.

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Detail Information

Series Title

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Call Number

T1905902025

Publisher

Indralaya : Prodi Proteksi Tanaman, Jurusan Hama dan Penyakit Tumbuhan, Fakultas Pertanian Universitas Sriwijaya., 2025

Collation

xi, 93 hlm.; ilus.; tab.; 29 cm.

Language

Indonesia

ISBN/ISSN

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Classification

632.307

Content Type

Text

Media Type

-

Carrier Type

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Edition

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Subject(s)

Penyakit tanaman
Prodi Proteksi Tanaman

Specific Detail Info

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Statement of Responsibility

TUTI

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