Quesada, C.R., & Sadof, C.S. 2017 Efficacy of Horticultural Oil and Insecticidal Soap against Selected Armored and Soft Scales. HortTechnology 27(5): 618-624
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Notes: We examined the efficacy of horticultural oil and insecticidal soap against armored and soft scales at different developmental life stages. Studies were conducted in the laboratory and field with two species of armored scale [pine needle scale (Chionaspis pinifoliae) and oleander scale (Aspidiotus nerii)] and two species of soft scale [calico scale (Eulecanium cerasorium) and striped pine scale (Toumeylla pini)]. Neither horticultural oil nor insecticidal soap significantly reduced populations of adult armored or soft scales compared with a control. Timing application to crawler stage is important for effective anagement
