PEMANFAATAN BAKTERI KITINOLITIK DALAM MENGHAMBAT PERTUMBUHAN Curvularia sp. PENYEBAB PENYAKIT BERCAK DAUN PADA TANAMAN MENTIMUN
Abstract: A study on about the
utilization of chitinolytic
bacterial isolates to
inhibit growth of
Curvularia sp. causal agent of leaf spot disease of cucumber
was done in Laboratory of Pest and Disease, Medan Johor, UPT-Balai Protection Plant
and Horticulture I and Laboratory
Microbiology Departement of
Biology, Faculty of Mathematics and
Natural Sciences, University
of Sumatera Utara,
Medan. Six chitinolytic
isolates were tested in vitro to
inhibit growth of Curvularia sp.. The result showed that Bacillus sp. BK13
inhibited more with inhibition zone
of 2,75 cm
and Enterobacter sp.
BK15 with inhibition
zone of 2,55
cm, whereas Enterobacter sp. PB17
showed the lowest inhibition zone of 1,3 cm. Soaking seed treatment in
chitinolytic bacterial suspension reduced the percentage of leaf spot.
Enterobacter sp. BK15 showed more ability (50%) to inhibit leaf spot attack.
Keywords: Bacillus sp. BK13,
cucumber, Curvularia sp., Enterobacter sp. BK15, leaf spot
Penulis: Andini Hanif, Dwi
Suryanto, Isnaini Nurwahyuni
Kode Jurnal: jpbiologidd120012
