August, '21] 



LATHROP AND BLACK: WESTERN PEACH BORER 



335 



Bl. Fuller's Earth 8 lbs. 



Molasses (stock food) 4 pts. 

 Glue (granulated) I34 lbs. 



Arsenate of lead 1 lb. 



Nicotine Sulfate 40% 4 ozs. 

 Water to make thick paint. 



B5. Fuller's Earth 8 lbs. 



Molasses (stock food) 4 pts. 

 Glue (granulated) 1>^ lbs. 



Arsenate of lead 1 lb. 



Water to make thick paint. 



B2. Similar to wash Bl with the addition of 1 pound of Copper Sulfate. 



B3. 



B4. 



Water to make thick paint. 



B6. Fuller's Earth 



Molasses (stock food) 

 Glue (granulated) 

 Nicotine Sulfate 40% 

 Water to make thick paint. 



B7. Quick lime 



Molasses (stock food) 

 Glue (granulated) 

 Arsenate of lead 

 Nicotine Sulfate 40% 

 Water to make thick paint. 



Table VI 



Fuller's Earth Washes, State Hospit.\l Orchard 

 Cottage Farm, Salem, 1920 



Treatments 



Results 



Row No. of Dates of No. of Trees Date Trees Infested No. of Worms 



No. Applica- Applications Treated Wormed Trees No. per cent To- Average 

 tions Wormed tal per tree 



Table VII 



Fuller's Earth Washes, Busenbark Orchard 

 Roseburg, 1920 



Treatments 



Results 



Row No. of 

 No. Applica- 

 tions 



Dates of 

 Applications 



No. of Trees 

 Treated Wormed 



Date Trees Infested No. of Worms 

 Trees No. per cent To- Average 



Wormed tal per tree 



An examination of tables VI and VII shows that the Fuller's Earth 

 washes have some superiority over the lime washes. This superiority- 

 may be more pronotinced in sections having considerable summer pre- 



