Carman, G.E., & Lindgren, D.L. 1956 Evaluation of parathion in California red scale and yellow scale eradication programs.. Journal of Economic Entomology 49(4): 534-539.

Notes: Field tests were conducted to determine whether or not parathion might be incorporated in the sequence of Aonidiella aurantii and A. citrina eradication treatments to increase the effectiveness, to reduce possible phytotoxic effects, and to increase the flexibility of the program. Petroleum oil spray has not been shown to be a preferred treatment.