TY - THES N1 - Lela Susilawati S.Pd., M.Si., Ph.D. ID - digilib79627 UR - https://digilib.uin-suka.ac.id/id/eprint/79627/ A1 - Devi Puspitasari, NIM.: 22106040060 Y1 - 2026/08/28/ N2 - Cacao pod rot caused by Phytopthora sp. infection has resulted in significant losses across various cocoa-producing countries, including Indonesia. Excessive use of synthetic fungicides to manage this disease has led to fungal resistance. One alternative control strategy is the use of biocontrol agents, such as lactic acid bacteria (LAB). This study aimed to analyze the ability of LAB isolates derived from pede (fermented fish) to inhibit the growth of Phytopthora sp. through in vitro and in vivo assays. Two test isolates, BALP2 and BALP5, demonstrated high antagonistic activity against the fungus Phytopthora sp. (PhK) in dual-culture assays compared to the control (39.65 mm), with mean fungal radial growth of 19.61 mm and 20.88 mm, respectively. Isolate BALP2 exhibited the highest inhibition of PhK mycelial growth (19.25 mm) compared to BALP5 (26.25 mm) and the control (39.87 mm). The combination of PhK and BALP2 was significantly effective in inhibiting PhK fungal infection in vivo, resulting in the lowest disease severity (20%) compared to BALP5 (40%) and the control (35%). These findings indicate that LAB isolates from fermented pede fish have the potential to be further utilized as biocontrol agents against the PhK fungus responsible for cacao pod rot. PB - UIN SUNAN KALIJAGA YOGYAKARTA KW - BAL KW - Biokontrol KW - Busuk Buah Kakao KW - Phytopthora SP. M1 - skripsi TI - AKTIVITAS BIOKONTROL BAKTERI ASAM LAKTAT ASAL MAKANAN FERMENTASI IKAN PEDE TERHADAP Phytopthora sp. PENYEBAB BUSUK BUAH PADA TANAMAN KAKAO (Theobroma cacao L.) AV - restricted EP - 57 ER -