V2 



CIRCULAR 2 



S. DEPARTMENT OF AGRICULTURE 



the fungicides used a: that time for the control of brown rot. A third 

 application, when the husks hare fallen, may be necessary if the 

 infestation is severe. 



Caterpillars 



The caterpillars oi various moths often become injurious to prune 



:: es 

 most 

 of fcu 

 pages 



in western Oregon and Washington. These caterpillars are 

 ikely to be the tent t rpillars, fall webworms, or caterpillars 



A liscussion of th< se insects wil 



Peach Twig Borer 



Prime trees are attacked by the p fcwigboj a much the same 



manner as are peach trees. The brow:: worms bore into the bender 

 new gi> >wth 3 causing the leaves to wilt, and later they feed in the fruit. 

 The life history and rati >] d this p si " given on page 64. 



PEACH INSECTS 

 Green Peach Aphid 



A serious reduction of the peach crop is sometimes caused by k _ 



numbers of greenpeach 

 phids Mysuspers ' : u 

 Sulzer)) (fig. 7 

 the opening blossoms. 

 Th-se sucking ins- s 

 by removing the 

 - from the newly 

 formed fruit, may 

 Lse it to drop. 

 They also curl the 

 ves badly and pre- 

 vent them from 

 developing normally. 

 It :s important, there- 

 fore, that control 

 measures be taken 

 early, as little or no 

 injury occurs later on. 



F:-.;v?.e 70 — G :-:-.-.. :.ric:: a:,ii:i= ..:. :v^: :.!. :.*:-.■ . T:.-- LV- -v. ]] ■ ':. a:uu ". 



came from Europe and 

 is common in all of the pc a h-growing iistricts of the West. 



LIEE HISTORY 



The glossy black wintering eggs may b< found on the twigs, in the 



axils of the buds, and in the i vie -s of the bark. They hatch early 

 in the spring, and the pinkish young commence feeding at once on 

 the opening buds, pushing their way into the unfolding blossoms and 

 between the developing leaves. The second and third generations 

 are green, and the latter acquire wings and migrate to summer food 

 plan":-, which include many of the common vegetables and ornamental 

 plants, such as cabbage, cucumber, lettuce, potato, tomato, turnip. 



