Abstract
Bacillus thuringiensis srv.toumanoffi is an indigenous endophytic rizobacteria from healthy soybean rizosphere capable of controlling bacterial pustule disease (Xanthomonas axonopodispvglycines). Rhizobacteria needs to be formulated to remain effective in storage and application. The aimed of this research was to obtain a stable bacterial formula in controlling bacterial pustule disease in soybeans. This research was designed in factorial in a randomized group consisting of 13 treatments with 3 replications. The Treatment was a combination of carrier material (peat, tapioca and coconut water+1% palm oil) and storage time (0, 2, 4, and 6 weeks). Soybean seeds were introduced with each Bacillus thuringiensis srv. toumanoffi formula before planting. The results showed that the formula Bacillus thuringiensissrv. toumanofi was relatively stable in suppressing the incidence and severity of bacterial pustule disease in soybean leaf. The best formula for controlling bacterial pustules was Bacillus thuringiensis srv. toumanoffi in peat, coconut water + palm oil and tapioca each 2 weeks storage.
Highlights
Pustul bakteri adalah salah satu penyakit utama yang disebabkan oleh Xanthomonas axonopodis pv. glycines (Xag) pada tanaman kedelai
The results showed that the formula Bacillus thuringiensissrv. toumanofi was relatively stable in suppressing the incidence and severity of bacterial pustule disease in soybean leaf
European Journal of Plant Pathology, 107 (1): 39-50
Summary
Penelitian ini dilakukan di Laboratorium Mikrobiologi Jurusan Hama dan Penyakit Tumbuhan (HPT) dan Korong Kampung Baru, Nagari Pungguang Kasiak, Kecamatan Lubuk Alung, Sumatera Barat, mulai oktober 2012 - Januari 2013. Percobaan ini dirancang secara faktorial dalam acak kelompok yang terdiri atas tiga faktor dan dua ulangan. Faktor pertama adalah tiga jenis bahan formula: tanah gambut (GB), tepung tapioka (TP) dan air kelapa + minyak sawit 1% (AK + MS 1%) dikombinasikan dengan lama penyimpanan: 0, 2, 4 dan 6 minggu dan kontrol. Perlakuan diaplikasikan pada benih kedelai sebelum ditanam. Data dianalisis dengan uji Turkey pada taraf nyata 5%.
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