Show CONTROL OF SCALE INSECTS spraying may be done at two dif ferent periods of year and for different purposes tin till control of scale insects ani ecta of all kindt is chiefly by spraying and this operation way may be carried ou on at two entire diff elLitt periods of 0 the year and tol fol two entirely different purposes jn in oni ong ase the spraying la Is done when lite tr arr c tire are not lu in foliage that is in tile the late autumn or early curly spring and these sprays prays tire are known us as dormant burnys bebau lief auise e at 0 the lle dormant condl con ot of the treesa |