%A WURYANDARI, Yenny %A PURNAWATI, Arika %A ARWIYANTO, Triwidodo %A HADISUTRISNO, Bambang %D 2008 %T Kemampuan Antagonistik Beberapa Isolat Pseudomonad Fluoresen Terhadap Bakteri Ralstonia Solanacearum Penyebab Penyakit Layu Pada Tanaman Tomat %K Key word: Pseudomonad fluorescent, Ralstonia solanacearum %X Bacterial Wilt disease (Ralstonia solanacearum) is a main problem in tomato plant. Controls of it have been optimum success yet. Control of it using certainly pseudomonad fluorescent strain can pressure plant disease developments which cause soil pathogen.The aim of the research, get pseudomonad fluorescent from tomato rizosfer which can inhibit of wilt bacteria disease Ralstonia solanacearum. Research methods are isolation and identification of pathogen bacteria and antagonistic bacteria. Biological control agents candidate selection was done with antagonistic in vitro and inhibit mechanism test. The Research show; there is wilt symptom in tomato areal at Wajak Malang. From isolation get Ralstonia solanacearum bacteria with identity white coloni, fluidal, irregular shape in YPGA media and high virulensi. From tomato rizosfer soil isolation in the same areal get 130 isolate of pseudomonad fluorescent in King’s B media. Antagonistec test in vitro to it isn’t of all bacteria can inhibit Ralstonia solanacearum growing. From them which was tested, get variation of inhibit zona from 4 mm until more than 30 mm. More of inhibit mechanism is bacteriostatic and only many is bacterisida. %U https://jurnal.unej.ac.id/index.php/JPH/article/view/3 %J Jurnal Pengendalian Hayati %0 Journal Article %P 1-5%V 1 %N 1 %@ 2721-7701 %8 2008-03-04