526 



STATE BOARD OF AGRICULTURE. 



Cherry Fruit-fly. Two sorts of small white maggots are often foiiiul 

 in ripening cherries. These footless maggots are the larvae of cherry 

 frnit-flies. The oiily way to snccessfnlly comhat these frnil flies is to 



Sour cherry tree not spraj-ed for 

 leaf spot. 



Fig. 6. 



Sour cherry tree sprayed for 

 leaf spot. 



lightly spray or sprinkle the trees with arsenate of lead when the flies 

 are preparing to lay their eggs in the immature fruit. Use about a pint 

 to a tree of a mixture containing 4 pounds of arsenate of lead paste or 2 

 pounds of powder to 100 gallons of water. 



GENERAL TREATMENT FOR GRAPE VINEYARDS. 



Grape vines are not often subject to attack by scale insects, so there is 

 seldom need for spraying with strong lime-sulphur before growth starts. 



Do not use dilute lime-sulphur at any time for spraying grapes. It 

 stunts or checks the growth of the berries. Use Bordeaux-mixture instead. 



Black Rot is a serious disease. Growers cannot afl'ord to risk the loss 

 it may cause by neglecting to spray. 



Downey Mildew^ commonly called "Red Grape," is sometimes a destruc- 

 tive disease. 



These diseases and others will be prevented very largely by spraying 

 as follows : 



Whex the Shoots are About 8 to 10 Inches Long^ spray with Bor- 

 deaux mixture for black-rot and downy-mildew. 



Just Before Blooming^ spray again Avith Bordeaux-mixture for black- 

 rot and downy mildew, and to every 50 gallons of Bordeaux, add 2 or 3 

 l)ounds of arsenate of lead paste, or half as much of the powder, or 3^^ 

 l)ound of arsenate of calcium, to poison the grape-berry moth and the 

 rose-chafer. If this latter is serious, use stronger poison, even up to 5 

 pounds of arsenate of lead paste or half as much powder, to 50 gallons. 

 A pint of the cheapest molasses added may help. 



