VINE PESTr* 14;^ 



of a darlv colour. In bad cases the fruit iy ako affected. 

 Thii.3 disease is of a virulent nature, and, once established 

 on a plant and not checked, will soon spread and ruin 

 the crop. It has been found by experience that a moist 

 atmosphere and insufficient ventilation, together with 

 overcrowding, encourage the development of the disease. 



Remedies. — Once the disease has obtained a firm hold 

 there is no cure. The best plan is to burn the infected 

 jdants. Preventive remedies are ars follows : Maintain a 

 dry atmosphere and ventilate the house early. Avoid late 

 waterings. If only a solitary leaf is found infected gather 

 and burn it. Spraying with Woburn Bordeaux Emulsion 

 (Formula No. 21) is an excellent preventive. The fruit 

 must be carefully wiped after spraying. One authority 

 recommends wrapping the fruit in oilskin before spraying, 

 but this is a tedious business. 



CHAPIEU XI. 



VINE PESTS. 



A INSECTS. 



Cushion Sca.!e (Pulvinaria vitis). — Vines are occa- 

 sionally attacked with this scale, which gets on to the 

 young shoots, and sometimes on the leaves and bunches, 

 making them very dirty by their excrements. They are 

 more easily seen by a white cottony substance which pro- 

 trudes from under the scale in the summer time, and in 

 which the young scales are enclosed. 



Eemedies. — Remove all loose bark from the vines, and 

 then spray the rods thoroughly in winter with Formula 

 No. 16, or well wash them with a solution of Gishur'Bt 

 Compound. 



