Penyakit antraknosa disebabkan oleh cendawan Colletotrichum sp, lebih dari 90% antraknosa yang menginfeksi cabai diakibatkan cendawan Colletotrichum capsici. Bacillus sp. dikenal sebagai bakteri kelompok PGPR yang mampu menginduksi pertumbuhan dan ketahanan tanaman terhadap penyakit melalui berbagai mekanisme. Bakteri Bacillus sp. merupakan bakteri antagonis yang memiliki kemampuan dalam menghasilkan siderofor, penghasil antibakteri, dan antipatogen tanaman. Tujuan dari penelitian ini adalah untuk memperoleh isolat bakteri Bacillus sp. asal Sumenep yang berpotensi menghambat perkembangan Collectotrichum capsici penyebab penyakit antraknosa. Uji antagonis bakteri Bacillus sp. terhadap cendawan Collectotrichum capsici dilakukan dengan metode double layer secara in vitro. Dari penelitian ini diperoleh lima isolat Bacillus sp. yang berpotensi sebagai agen pengendali hayati. Uji antagonis bakteri Bacillus sp. terhadap cendawan Collectotrichum capsici didapatkan daya hambat tertinggi yaitu perlakuan BP1 sebesar 86,94%.

Anthracnose is caused by the fungi Colletotrichum sp, more than 90% of anthracnose that infects chili due to the fungus Colletotrichum capsici. Bacillus sp. is known as a group of PGPR bacteria that can induce plant growth and resistance to disease through various mechanisms. Bacillus sp. is an antagonistic bacterium that has the ability to produce ciderophore, an antibacterial producer, and plant antipathogen. Purpose the study was to obtain Bacillus sp. isolates from Sumenep which could potentially inhibit the development of Collectotrichum capsici which causes anthracnose. The antagonistic test of Bacillus sp. against fungi Collectotrichum capsici was carried out by double layer method in vitro. From this study five isolates of Bacillus sp. which is potentially a biological controlling agent. Antagonist test for Bacillus sp. the highest inhibition of Collectotrichum capsici fungi was BP1 treatment of 86.94%.

Baca Jurnal Baca Jurnal Baca Jurnal Baca Jurnal