Insect and Fungous Enemies of the Grape. 75 
of lead), 40 per cent nicotine sulphate }$ pint, and 1 pound rosin fish- 
oil soap to 50 gallons of spray mixture for fungous diseases, the berry 
moth, eight-spotted forester, grape leaf-folder, grapevine aphis, grape 
rootworm, and grape leafhopper. To destroy the leafhopper direct 
the spray against the lower surface of the leaves.° To control the 
berry moth thoroughly coat the grape bunches with the spray, direct- 
ing the spray nozzle by hand. 
FOURTH APPLICATION. 
About 10 days later, or when the fruit is nearly grown, if black- 
rot, mildew, or ripe-rot are still appearing, spray with 4-38-50 Bor- 
deaux mixture, or if there is danger of the Bordeaux mixture adher- 
ing to the fruit when picked use neutral copper acetate or verdigris at 
the rate of 1 pound to 50 gallons of water, adding 1 pound of com- | 
mercial rosin fish-oil soap. In severe cases of black-rot and ripe-rot 
a fifth application may be necessary, in which case the period between 
the earlier applications should be somewhat shortened and neutral 
copper acetate solution used. To secure satisfactory results the 
spraying must be timely and thorough so as to cover as nearly as 
possible the entire surface of the foliage and fruit with a fine spray. 
WASHINGTON : GOVERNMENT PRINTING OFFICH : 1921 
