Formula padat Bacillus cereus STRAIN TLE1.1 untuk pengendalian penyakit busuk pangkal batang (Sclerotium rolfsii) pada tanaman tomat

Abstract

Penyakit utama tanaman tomat yaitu busuk pangkal batang yang disebabkan oleh Sclerotium rolfsii dapat menimbulkan kerugian mencapai 80-100%. Tujuan penelitian yaitu untuk mendapatkan formula padat Bacillus cereus strain TLE1.1 yang efektif untuk pengendalian penyakit busuk pangkal batang pada tanaman tomat. Penelitian bersifat eksperimen dengan mengamati kemampuan formula padat B. cereus strain TLE1.1 dalam pengendalian penyakit busuk pangkal batang dengan Rancangan Acak Lengkap yang terdiri atas 9 perlakuan dan 3 ulangan. Perlakuan terdiri atas kombinasi bahan pembawa formula padat yang terdiri atas limbah padat ampas tebu, ampas tahu dan tongkol jagung, fungisida serta kontrol. Masing-masing formula padat B. cereus strain TLE1.1 diintroduksi pada benih dan bibit tomat. Hasil penelitian menunjukkan bahwa hampir semua formula mampu menekan penyakit busuk pangkal batang tanaman tomat. Formula terbaik dalam menurunkan penyakit busuk pangkal batang pada tanaman yaitu formula ampas tahu dan ampas tahu + tongkol jagung.Main disease of tomato plant, namely stem rot caused by Sclerotium rolfsii which can cause losses up to 80-100%. The aim of the study was to obtain a solid formula of Bacillus cereus strain TLE1.1 which was effective for controlling stem rot disease in tomato plant. This research was an experimental study to know the ability of the solid formula of B. cereus strain TLE1.1 in controlling stem rot disease which was carried out in a completely randomizeddesign consisting of 9 treatments and 3 replications. The treatment consistedof a combination of solid formula carriers consisting of sugarcane solid waste,tofu dreg and corncob, fungicides and controls. Each solid formula of B. cereus strain TLE1.1 was introduced into tomato seeds and seedlings. The results showed that almost all of the formulas were able to suppress stem base disease of tomato plants. The best formula that reduced stem rot in plants were the tofu dreg and tofu dreg + corncob formula.