.-DO NEW JEESEY AGRICULTURAL COLLEGE 



U'uished by their broader, more oval form; but the majority seemed to 

 be males in the pupal stage, or just about ready to emerge. Every 

 stage ill the entire life cycle was tlierefore present at the same time. 

 September 28th all the females had left the leaves and no young were 

 observed. Infested trees were easily recognizable by the sooty appear- 

 ance and the foliage was mature and ready to drop. 



Remedial Measures. 



A great deal can be done to lessen the numbers of this insect by 

 judicious trimming in the winter. The insect does not get readily 

 from tree to tree, and once clean, a plant is not quickly reinfested. 

 Very badly-affected trees should have all the worst twigs and branches 

 cut out, and on young trees it will pay to cut back vigorously, even at 

 the expense of a crop. The tendency of the scales to set toward the 

 tips of the twigs makes this trimming more practicable. 



Summer applications on scales have not proved satisfactory, and on 

 peach are likely to be less so than on other fruits, because the 

 foliage is more susceptible to injury. Besides, the long period during 

 which young develop would make it necessary to make several spray- 

 ings to reach all those that are born. 



The lime, salt and sulphur wash applied in late fall will probably 

 be as effective as anything that can be used, and will serve to clean the 

 soot fungus from the trees, enabling them to start the season following 

 with fresh energy. 



The recommendation is, therefore, to spray all infested trees late 

 in October or early in ISToyember with a lime and sulphur wash, pref- 

 erably the boiled mixture, with some salt. After midwinter go 

 through the trees carefully and cut out all badly-infested wood and all 

 such as appears to have escaped the spray. If, in spring, there is still 

 a notable remnant of apparently living scale, duplicate the application 

 just before the trees make a start. 



Instead of the lime and sulphur, the soluble peti'oleum may be 

 used and ^n^l probably be quite as effective against the scales. It will 

 not be so useful as a tree cleaner, however, and will not so completely 

 remove the remnants of the soot fungus. In those orchards where only 

 a few trees are infested or where the infestation is slight, all the scaly 

 wood should be cut out. 



