Phytotoxicity Tests for Oils, 1983

The test was conducted to evaluate Ortho Volck Oil Spray and Volck Oil Spray + Advantage 4EC at 3 different rates for phytotoxicity on euonymus. The euonymus plants were field grown nursery stock located on a horticulture research farm outside of Stillwater. Treatments were made with a 2-gal B & G compressed air sprayer at approximately 20 lb/in2. All plants were treated to runoff. The check plants were treated with water to runoff. Applications were made on 26 Jul, when the temperature was 104°F and the wind velocity ranged 5-10 mph. Each treatment was replicated 3 times. Plants were examined for phytotoxicity 1, 7, 14 and 28 days after treatment. No phytotoxicity was detected.