Secondary metabolites of the granular form of Pseudomonas fluorescens P60 and its applications to control tomato bacterial wilt

Abstract. Soesanto L, Saputra DA, Sastyawan MWR, Mugiastuti E, Suprapto A, Rahayuniati RF. 2023. Secondary metabolites of the granular form Pseudomonas fluorescens P60 and its applications to control tomato bacterial wilt. Biodiversitas 24: 2475-2482. Bacterial wilt is one important diseases tomatoes caused by Ralstonia solanacearum (Smith 1896) Yabuuchi et al. 1996. Its can be achieved applying secondary Migula 1895 in form. The study aimed determine shelf life P. P60' application manage performance tomatoes. was conducted for five months at Plant Protection Laboratory Experimental Farm, Faculty Agriculture, Universitas Jenderal Soedirman. A randomized block design used with four replicates six treatments, consisting R. (control), + 1, 5, 10, or 15 g, bactericide (a.i. agrimycin sulphate 20%). Variables observed were inhibition zone, incubation period, disease intensity, area under progress curve (AUDPC), crop height, fresh dry weight, root phenolic compounds qualitatively. Results research showed that formula until 4th week still had an zone between 21.67-23.34%. However, granules stored as much g weeks effectively reduced intensity 75.00%, decreased AUDPC value 74.72%, increased plant weight well 44, 62.5, 65.65 %, respectively. In addition, content