TY - JOUR AU - Pritchard, A. Earl AU - Beer, Robert E. TI - Oak pit scales: Control possible with emulsion-type foliage oil and toxaphene spray JF - California Agriculture JO - Calif Agr Y1 - 1950/04/01 VL - 4 IS - 4 SP - 9 EP - 14 PB - University of California Agriculture and Nature Resources SN - 0008-0845 UR - http://www.ucanr.edu/sites/calagjournal/archive/?article=ca.v004n04p9 AB - Oak pit scales are serious pests of oak trees in California. Terminal growth, branches, and smaller trees are often killed as a result of the feeding scales, and large trees may be weakened seriously. Experimental work indicates that oak pit scales may be controlled.