SOME INSECTS OF THE YEAR IN GEORGIA. 77 



SOME INSECTS 0E THE YEAR IN GEORGIA. 



By R. I. Smith and A. C. Lewis, Atlanta, Ga. 



Insects of the peach, apple, cotton, corn, grass, and grain crops are 

 the ones that command the most attention each year in Georgia. 

 During the season of 1905 several injurious forms have appeared on 

 each of these crops, while in addition many insect pests of minor crops 

 have been brought to our attention. 



The San Jose scale (Aspidiotus perniciosus Comst.) still heads the 

 list of scale insects in Georgia as being the best known and the most 

 pernicious. The winter application of lime-sulphur-salt wash has 

 proved to be an effectual remedy for this pest. One spraying in late 

 winter is usually sufficient, though badly infested orchards are some- 

 times treated twice during the winter, preferably in December and 

 February. For summer treatment of the San Jose scale we recom- 

 mend the use of 20 per cent kerosene-soap emulsion on peach trees 

 when the fruit is about 1 inch in diameter, or just after the fruit is 

 gathered. Soluble petroleum oils have not been sufficiently tested in 

 Georgia to justify our either recommending or condemning their use. 



The cherry scale (Aspidiotus forbesi Johns.) is common in many 

 orchards, but not often numerous enough to require spraying. 



The peach lecanium (Eulecanium nigrofasciatum Perg.) has been 

 found in a few peach and plum orchards this year. It is generally 

 kept in control where lime-sulphur-salt wash is used during winter. 



The West Indian peach scale (Aulacaspis pentagona Targ.) is still 

 present in a few localities in middle and southern Georgia. 



The peach borer (Sanninoidea exitiosa Say) continues to be one of 

 the most dreaded of peach insects. Repellent washes have not proved 

 to be satisfactory in preventing the depredations of this pest. Work 

 done by Prof. H. N. Starnes, of the Georgia experiment station, 

 goes to show that mounding the earth around the base of peach trees 

 about August 1 to compel the borer larvae to establish themselves well 

 up on the trunks, and the early removal of these mounds, about the 

 last of October, followed by thorough scraping and worming and 

 application of some caustic wash is the most satisfactory way of 

 fighting this insect. This work may be supplemented by spring 

 worming if necessary. 



The fruit-tree barkbeetle (Scolytus rugulosus Ratz.)has been more 

 in evidence this year than commonly ; and this we think is due largely 

 to the fact that many peach trees were injured by the cold winter of 

 1904-5, rendering them more susceptible to attacks from this insect. 

 During June and July many letters were received from all parts 

 of Georgia stating that this barkbeetle, or shot-hole borer, as it is 

 more commonly called in Georgia, was killing numbers of trees in the 



