Efikasi Bakteri Endofit dan PGPR dalam menekan Penyakit Layu Bakteri pada Tomat di Lapangan

Abstract

Biological control of the bacterial wilt disease of tomato has been developed on the last several years in Indonesia. Two isolates of biocontrol agents have been tested for their antagonistic activities toward R. solanacearum in vitro were Bacillus subtilis AB89 (PGPR) and endophytic bacteria, Staphylococcus epidermidis BC4. This experiment was conducted to evaluate the effectiveness of those two bacteria, singly or in combination, in the experimental plots and in the field, and also to observe their relationship. Application of S. epidermidis BC4 singly relatively caused the lowest AUDPC value of tomato bacterial wilt, while application of S. epidermidis BC4 and B. subtilis AB89 in combination caused the increasing of AUDPC values. Application of the biocontrol agents, single or in combination, were significantly increasing the total fresh weight of tomato fruits during harvest compared with those in control.