Navrozidis, E.I., Zartaloudis, Z.D., Papadopoulou, S., & Karayiannis, I. 1999 Biology and control of San Jose scale, Quadraspidiotus perniciosus (Comstock) (Hemiptera, Diaspididae) on apricot trees in northern Greece.. Acta Horticulturae (No. 488): 695-698.

Notes: [Proceedings of the XIth International Symposium on Apricot Culture, Veria, Makedonia, Greece, 25-30 May, 1997, Volume 2.] The results indicated that Q. perniciosus [Diaspidiotus perniciosus] completed three generations per year and its parasitoid Encarsia perniciosi, four generations per year. The two-year (1994-1995) field experiments also revealed that spring and summer applications of fenoxycarb, buprofezin and diofenolan gave successful control of the pest and reduced only slightly the parasitization by E. perniciosi. The use of methidathion had a detrimental effect on the parasitoid.