Efficacy of Summer Oil Spray on Thirteen Commonly Occurring Insect Pests    (View PDF)

R.W. Baxendale and W.T. Johnson

Abstract: The limited investigations of the past have shown that, when applied at low concentrations to woody ornamentals in verdant condition, horticultural oil provides a safe and effective means of controlling a wide variety of arthropod pests. This report provides data showing that the superior oil product Sunspray 6E Plus is highly effective against the woolly larch adelgid, cottony maple scale, calico scale, golden oak scale, boxwood psyllid, honeylocust plant bug, sycamore lace bug, European pine sawfly, and the euonymus webworm. Poor to no effect is reported here against adults of the sycamore plant bug, adults and larvae of the imported willow leaf beetle, and Japanese beetle. Phytotoxicity data are also included.

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https://doi.org/10.48044/jauf.1990.023