Control of Two-Spotted Spider Mites on Strawberries, 1971

Plictran was compared with a mixture of Kelthane + Tedion. The variety ‘Midway’ was selected because of its susceptibility to attack by mites. Both treatments were applied with a Kinkelder (Model - Marvel) low volume row crop sprayer with a 3-sided row %fop head. Sprays were applied at the rate of 10 gal/acre at 15 psi. The air velocity produced by the sprayer was 160-180 mph. The experimental design was a randomized complete block design with 5 replications. The plots were 30 ft long and 3 rows wide, the center row being used as the record row. All rows were planted on a 42-inch row spacing. Check plots were obtained by covering certain rows with clear 4 mil polyethylene plastic film. Check plots remained covered for 12 hr. All samples for mite counts consisted of 5 trifoliate leaves per plot. The record row was located 12.25 ft from the center of the sprayer.