Table 4.

Mean percentage of total leaf area damaged by Japanese beetle (Popillia japonica) in roses (Rosa spp.) treated with different biopesticides during 2003 field and shadehouse trials.

Treatment^{^z}	Application rate (product/L of water)	Mean % leaf damage^{^y}
		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.