Rawat, U.S., & Pawar, A.D. 1992 Biocontrol of San Jose scale, Quadraspidiotus perniciosus (Comstock) by predatory beetle, Chilocorus bijugus Mulsant in Himachal Pradesh.. Plant Protection Bulletin (Faridabad) 44(4): 7-10.

Notes: Abstract: Pest in the five main apple growing areas in India; laboratory bred adult predatory beetles, C. bijugus were repeatedly released in these problem areas; results were viewed as promising and practical; release made in summer gave better results than those made in autumn or the rainy season. Keywords: biological control.