Iren, Z., & Okul, A. 1972a [Investigations on the occurrence and spread of San Jose scale (Quadraspidiotus perniciosus Comst.) on fruit-trees in central Anatolia.]. Zirai Mucadele Arastirma Yilligi [Plant Protection Research Annual] 30-31; 156-158.
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Notes: [Original title: Orta Anadolu bolgesi meyva agaclarinda sanjose kabuklu biti (Quadraspidiotus perniciosus Comst.)' nin bulundugu yerler ve yayilis alani.] The distribution in central Anatolia of Quadraspidiotus perniciosus (Comst.) is discussed in relation to fruit-growing localities. Measures suggested for preventing the spread of this scale include the following: planting material from uninfested nurseries should be used, unthrifty plants should regularly be removed from the orchard, and if the insect makes its appearance, spraying should be carried out over a wide area.
