STUDY 2: The Effects of Fungicide Treatments on Dark Fired Tobacco

This experiment compared seven fungicide treatments with combinations applied at various times. The whole experiment received 0.5 lbs of mefenoxam per acre on June 5th as preplant incorporated. All plots were set on June 10th with the PD 7302LC variety. The plant population was 4900 plants per acre and was set with 40 inch row spacing and a 32 inch intrarow spacing. The 1st cultivation and four week treatments were applied on July 8th. Layby (last cultivation) and six week treatments were applied on July 22nd and July 23rd. The eighth week treatment was applied on August 12th. All mefenoxam (RidomilGold) treatments were applied to the soil at 0.5 lbs a.i. /acre. All azoxystrobin(Quadris) treatments were applied at 0.13 lbs a.i./acre as a foliar treatment. The seven treatments were: Treatment #1 was untreated; Treatment #2 was mefenoxam applied at first cultivation; Treatment #3 was mefenoxam applied at first cultivation and Layby; Treatment #4 was azoxystrobin applied at 4 weeks; Treatment #5 was azoxystrobin applied at 4 weeks and 6 weeks; Treatment #6 was azoxystrobin applied at 4, 6, and 8 weeks; Treatment #7 was a combination of two mefenoxam treatments and two azoxystrobin treatments; The first mefenoxam treatment was applied at first cultivation and Layby and then azoxystrobin treatments were applied at 4 and 6 weeks. The yields from the 2008-2009 growing season will be measured and analyzed statistically