BACILLUS SEBAGAI AGENTS PEMACU PERTUMBUHAN DAN MENGHAMBAT INFEKSI FUSARIUM PADA PERKECAMBAHAN BENIH BAWANG PUTIH

BACILLUS SEBAGAI AGENTS PEMACU PERTUMBUHAN DAN MENGHAMBAT INFEKSI FUSARIUM PADA PERKECAMBAHAN BENIH BAWANG PUTIH

Oleh: Hani Kharismantari, Zainal Djauhari Fatawi, Hadiwiyono

Universitas Sebelas Maret

Contact Author: haniaja@aol.com.

ABSTRACT

Fusariumbasal rot of garlic is important constrain for farmers in Tawangmangu, Karanganyar, Central Java. Bacillus is known as antagonists pathogens and can increase plant productivity. The study aims to determine the ability of Bacillus as growth promoter agents and to inhibit Fusarium infection on garlic seed germination. A mount of 20 isolates of Bacillus from garlic were used as treatment in the suspension test of Bacillus, indole acetic acid production test (IAA) and the culture filtrate test of Bacillus on garlic seed. Results showed that all of the isolates were able to produce IAA. Cel suspensionor culture filtrate of Bacillus could inhibit Fusarium infection, Bacillus filtrate were not been able to promote the growth on the seed germination of garlic compared to these Bacillus suspension. Bacillus isolates B17 and B16 in the test suspension were more potential in inhibiting Fusarium infection and stimulate seed germination of garlic, while in the filtrate test, isolate B10 was more potential in inhibiting Fusarium infection on the seed germination of garlic. Keywords: garlic, Bacillus, Fusarium, IAA, germination.