GA'A PE VINES INSECTS. 



33' 



hibernated, provided this is done u hilst the leaves are green, and they are then easily 

 assailable with a petroleum mixture (Vol. I., page 261), or the following: water, 4 

 gallons; petroleum, \ gill. This should be used by alternate squirts into the vessel and 

 over the vines. The work must be done so as to wet the vines thoroughly in every part, 

 also the woodwork and walls. Eepeat in the course of three or four days, but before 

 doing so cover the border with any available material to keep the petroleum from the 



Fig. 105. DISEASE OF VINES CAUSED BY THE VINE MITE, PHYTOFTU^ vms. 



roots. Follow in a week with another syringing, and a third at a similar interval. 

 This treatment is usually sufficient to extirpate mealy bug, together with cleansing and 

 painting the house, limewashing the walls, dressing the vines with an insecticide, 

 removing the loose surface soil, and applying a top-dressing of fresh soil. If the leaves 

 just before falling are infested with mealy bug, gather them from the vines, and burn 

 them instead of allowing them to shrivel and fall in the house. 



Mite (Phytoptus vitis). This arachnoid exists under four fonns : first, as a very 



u u 2 



