Treatmentz | Application rate (product/L of water) | Mean % leaf damagey | |||
---|---|---|---|---|---|
Field | Shadehouse | ||||
28 July | 8 August | 29 July | 8 August | ||
Sevin® | 0.3 g/L (0.04 oz/gal) | 1.25 c | 0.70 c | 6.63 cd | 4.50 c |
Surround® | 30 g/L (0.25 lb/gal) | 0.83 c | 1.13 bc | 7.63 cd | 7.50 c |
UltraFine® Oil | 14.0 mL/L (1.4% v/v) | 1.50 bc | 1.42 bc | 10.13 bcd | 10.50 abc |
Triact 70® | 8.3 mL/L (0.83% v/v) | 5.83 ab | 2.60 bc | 12.63 abcd | 10.50 abc |
Ajax® | 18.3 mL/L (1.8% v/v) | 3.67 abc | 5.60 ab | 23.75 abcd | 24.50 abc |
Armicarb® | 6.6 g/L (0.05 lb/gal) | 2.67 bc | 4.40 abc | 20.00 abcd | 17.50 abc |
Neem Gold® | 8.3 mL/L (0.83% v/v) | 3.25 abc | 3.60 bc | 30.00 abc | 23.75 abc |
Equate® | 18.3 mL/L (1.8% v/v) | 1.60 bc | 2.90 bc | 32.50 ab | 23.50 abc |
M-Pede® | 8.3 mL/L (0.83% v/v) | 2.00 bc | 4.40 abc | 35.00 a | 27.75 ab |
Bayleton | 0.9 g/L (0.12 oz/gal) | 5.33 abc | 5.33 abc | 20.25 abcd | 30.00 a |
Control | — | 5.17 abc | 9.00 a | 17.00 abcd | 27.50 ab |
LSD(0.05) | 5.38 | 4.67 | 22.64 | 20.25 |
↵zInsecticide Sevin® (carbaryl) was added in a tank mix fungicides Compass® (trifloxystrobin) starting in mid-June when Japanese beetles were detected in insect traps. All other treatments were initiated early May for disease control.
↵yMean values followed by common letter within a column are not significantly different according to analysis of variance (Proc GLM) least significant differences on square root transformed data (X + 0.5). Dates in which statistical differences were not detected are not shown.
LSD = least significant difference.