Characterization of Blendok Disease (Botryodiplodia theobromae Pat.) on Pummelo (Citrus grandis L. Osbeck) in Bali
Ida Bagus Komang Mahardika1, Anak Agung Sagung Putri Risa Andriani 2, Luh Komang Sulasmini Mudra3

1, 2, 3, Faculty of Agriculture, Warmadewa University

Abstract

Pummelo in Balinese speaking is called Jerungga, Jeruti, Muntis, Juuk Saba, Juuk Bona or Juuk Gede. Morphologically and genetically, pummelo in Bali is known to be 5 (five) types of cultivars. The main cause of the decline in the population of pummelo plants in Bali is due to infection with blendok disease caused by the fungus Botryodiplodia theobromae Path. Characterization of the pathogen causing blendok disease is needed to determine the characteristics and pathogenicity of the fungus in pummelo plants. This is useful for determining how to control it effectively. The results showed that the B. therobromae fungus had a gray color in its early growth phase. This fungus has a shape like cotton and has abundant air between the micelles. Colony area of B. theobromae on the first day was 1.13 cm2 and then on the second to fifth day experienced a rapid growth rate, which was 75.46 cm2. For the area of B. theobromae colonies experienced a very fast growth rate on the third and fourth days. colony area of B. theobromae did not significantly affect the two treatments, namely 18.34 cm2 and 22.2 cm2, respectively.

Keywords: Citrus grandis L. Osbeck - Blendok Disease- Botryodiplodia theobromae Pat.

Topic: Integritas Sektoral Dalam Pengentasan Kemiskinan di Bali