ISOLASI JAMUR RHIZOSFER TANAMAN PISANG SEBAGAI AGENS HAYATI TERHADAP FUSARIUM OXYSPORUM F.SP. CUBENCE PENYEBAB PENYAKIT LAYU FUSARIUM TANAMAN PISANG

Abstract

Rhizosphere fungi is one group of microbes that can induce plant resistance against various diseases. Exploration rhizosphere fungi on plants can be used as an important alternative biological control (as biological agents). The research aims to determine the types of soil fungi in the rhizosphere of plants as biological agents buai banana against Fusarium oxysporum f.sp. cubence (Foc) causes Fusarium wilt disease in vitro banana plants. The study was conducted from February to May 2011 in the Laboratory of Microbiology Faculty UNP. Type of research is a descriptive study. The data obtained in the form of qualitative data, presented descriptively and images of species of fungi were identified and antagonistic fungi against Foc. The results obtained 17 isolates of soil fungi that can be isolated and identified, which consists of 6 genera: Aspergillus, Penicillium, Trichoderma, Beauveria, Madurella, and Calcarisporium. In vitro testing showed the mechanism of soil fungal isolates of Beauveria sp., Aspergillus sp.1, Aspergillus sp.3, Aspergillus sp.4, Penicillium sp.1, and Penicillium sp.2 in controlling Foc is antibiosis. Madurella sp., Trichoderma sp., Calcarisporium sp., Aspergillus sp.1, Aspergillus sp.2, Aspergillus sp.3, Aspergillus sp.4, Penicillium sp.3, and Penicillium sp.4 in controlling Foc is competition.

Keyword : Rhizosfer ,  Agens Hayati, Fusarium Oxysporum