| dc.description.abstract | Phytophthora nicotianae is one of primary disease at tobacco areas. It
influences the capital income because tobacco is one of the important export
commodities. P. nicotianae \s a soil born pathogen that can stay life long in the
soil. So it is diffrcult to control. The objective of this research was to know the
resistance level of some Deli tobacco variety to P. nicotiareae. Secondlyto know
the potential of L fuiningii and the secondary metabolite in conholling P.
nicotianae on some tobacco variety. This research was done at Balai Penelitian
Tembakau Deli (BPTD) PTPN II, from December 2008 to May 2009. It consisted
of five activities, i.e. (l) pathogentest on P. nicotianae in some tobacco variety,
(2) T. koningii antifungal suspension test towards P. nicotianae in some tobacco
variety, (3) T. koningii conidial antagonistic activity test towards P. nicotianae in
some tobacco variety, g) f. koningii antifungal suspension resistant induction
towards P. nicotianae in some tobacco variety, (5) T. koningii conidial resistant
induction towards P. nicotianae in some tobacco variety. Furthermore, Deli-4, Fl
45, NC 95 and FIN were varieties used in this research.
The results of the analysis showed that NC 95 was the most resistence
variety of the four, but Deli-4 was the most susceptible. The conidia and
secondary metabolite of T. kaningii were able to control of P. nicotianae. lts
secondary metabolite more effective rather than its conidia both in treatment and
pre inoculation | en_US |
