Uji Efektifitas Jamur Antagonis Trichoderma sp. dan Gliocladium sp. dalam Mengendalikan Penyakit Rebah Semai (Phytium spp.) pada Tanaman Tembakau deli (Nicotiana tabaccum L.) di Pembibitan

Abstract

Wendy Noftriyani Siregar, “Test Efectivity Antagonist Fungi Trichoderma sp. and Gliocladium sp. In Controlling Damping-off Disease on The Plant of Deli Tobacco (Nicotiana tabaccum L.) in Nursery”. under supervised by Dr. Lisnawita SP, MSi dan Ir. Lahmuddin Lubis, MP. This research aim to determine the effectiviness of the antagonistic fungus Trichoderma sp. and Gliocladium sp. in varying doses to control damping-off disease on tobacco plant. This research was done in BPTD Sampali Medan, North Sumatera in March-june 2011. The research used randomized blok design non-factorial with 10 treatment and 3 replication. The result the highest percentage attack at treatment F1(control) of 8.53 % and lowest in treatment F4 (Trichoderma sp. 18 gr), F5 (Trichoderma sp. 24 gr), F7 (Gliocladium sp. 12 gr), F8 (Gliocladium sp. 18 gr), F9 (Gliocladium sp. 24 gr) of 0.71 %. The highest intensity of attack at treatment F1 (control) of 6.45 %, and the lowest in treatment of F0 (without treatment), F4, F5, F8, F9 of 0.71 %. The number of leaves of tobacco plant as much as on the treatment F5 of 9.73 and the lowest of 4,20. While the highest plant height of treatmen F5 of 29.27 cm and the lowest of 8.25 cm. The test antagonism fungus Trichoderma sp. and Gliocladium sp. against the fungus Pythium spp. The result show the growth of Pythium spp. steer clear the fungus antagonism ploriferate in the media on Laboratory.