Snitko, N.F. 1938 [The growth of shoots of fruit trees infested by San José scale.]. [Works of Quarantine Laboratories]. Sel'khozgiz Leningrad 272 pp.

Notes: This paper describes the damage caused to apples and plums in the Azov-Black Sea Province. The feeding of the scale produces a disturbance in the normal function of the conducting system of the tree, which results in a marked decrease in the growth of the crown branches and sometimes in the size of the leaves.