INSECTS AND DISK ASKS <K TIM-: PKACII 1097 



Control. When much injury continually occurs to the fruit, the 

 environment of the pcnch should he changed hv eradicating the 

 sumach and wild grapevines along the border of the orchard. It 

 docs not appeal- necessary or practical to take further precau- 

 tions for the trouble. 



San Jow' 



A knowledge of the importance of San Jose Scale (Aspidiotus 

 pemwiosus ('omst.j is necessary, because the peach is one of the 

 favorite hosts of the insect. When scale first appeared in the 

 orchards of western Xe\v York, growers thought their orchards 

 were; doomed. .Many growers have found the pest difficult to 

 control, but it can be rightly said that its inroads have been a 

 blessing in disguise to the fruit grower because they have taught 

 him the value of sprays and forced thoroughness into his work. 

 A description of the insect will be found on page 1022. 



Control. Even if a tree has become injured, it is possible to 

 kill the scale by a thorough application of spray. Lime-sulphur 

 has long been a standard spray for the purpose, not only because 

 it will kill scale but because it will also check leaf curl and is 

 not dangerous. If trees are thoroughly infested or are subject to 

 infestation, the lime-sulphur should be used as follows: lime- 

 sulphur, 32 degrees Eaume, 1 gallon; water, 8 gallons. 



On peaches it is not advisable to use other sprays for scale. The 

 application of the formula recommended should be made late in 

 fall after the leaves have fallen or early in spring before the 

 tip, or terminal, buds burst. As a majority of the scale living 

 over winter are on the under side of the limbs and branches, 

 it is imperative that a thorough application should be given to the 

 under surface, and that all branches, both the top and the bottom 

 thereof, must be covered. 



Borers 



There are several kinds of borers that infest and seri- 

 ously injure peach trees under conditions favorable to the pest, 

 but only two of these are generally recognized by growers as 

 being distinct species. The two commonly known species are shot- 

 hole and peach-tree borers. Two other species are also common 

 in New York, the peach-twig borer and the lesser peach-tree borer. 



