ANTAGONIST TEST Trichoderma spp. ON THE GROWTH OF Sclerotium rolfsii

CAUSES OF ILES-ILES ROOT NECK ROT

Andini Widiastuti1, Yulmira Yanti1, Rita Harni2

1Program Studi Proteksi Tanaman, Universitas Andalas, Padang, Sumatera Barat, Indonesia

2Balai Penelitian Tanaman Industri dan Penyegar, Parungkuda-Sukabumi, Jawa Barat, Indonesia

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ABSTRACT

Trichoderma spp. have been found and have various antagonistic abilities against plant pathogens. Trichoderma is one of the biological agents that can suppress the growth of plant pathogens by various mechanisms such as antibiosis, competition and parasitism. The aim of this study was to obtain in vitro Trichoderma isolates which were antagonistic to the growth of Sclerotium rolfsii which causes of Iles-iles root neck rot. This study used a completely randomized design (CRD) with 5 treatments and 3 replications. The treatments consisted of LP1 (Trichoderma virens), LP2 (Trichoderma hamatum), LP3 (Trichoderma amazonicum), JB2 (Trichoderma atroviride), PRD (Trichoderma viride), and control treatments. The isolates of T. atroviride (79.58%) and T. hamatum (70.04%) were effective to inhibit the growth of S. rolfsii.

Key words : Antagonist, iles-iles, root neck rot, Sclerotium rolfsii, Trichoderma spp.

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