156 STATE HORTICULTURAL SOCIETY. 



Downy Mildew commonly called "Red Grape" was very destructive 

 last season and caused large financial losses to growers who did not 

 spray. 



Black Rot has been a serious disease in recent seasons. Growers 

 cannot afford to risk the loss it may cause by neglecting to spray. 



These diseases and others will be prevented very largely by spraying 

 as follows: 



When the Shoots Are About 8 to 10 Inches Long, spray with Bord- 

 eaux mixture for black rot and downy mildew. 



Just Before Blooming spray again with Bordeaux mixture for black 

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

 3 pounds of arsenate of lead to poison the grape-berry moth, and the 

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

 5 lbs. to 50 gallons. A pint of the cheapest molasses added may help. 



Just As the Blossoms Are Falling,, make another spraying like the 

 above. 



About 10 Days or Two Weeks Later, it may be necessary to make 

 another spraying like the two previous, but this will depend upon the 

 weather conditions and the amount of rot and mildew prevalent. If 

 later sprayings are thought to be necessary, some material should be 

 used that will not stain the fruit such as weak copper sulphate solution. 



There are several grape insects that are found only in occasional vine- 

 yards and then not every year. The grower should keep a sharp watch 

 of his vines for them and* if found, take prompt measures to destroy 

 them. (If not familiar with their appearance send specimens to The 

 Entomologist, East Lansing, Michigan.) 



Those most likely to be found are the following: 



Flea-beetles may appear at any time but are most likely to come as 

 the buds open in early spring. Spray with Bordeaux mixture and a 

 strong poison, 3 or 4 pounds of arsenate of lead to every fifty gallons 

 of the Bordeaux; if early in spring. Later use less poison. 



In vineyards where the grape-berry moth is serious, spray with Bord- 

 eaux and an arsenical poison during the middle of July, before the 

 20th. 



For leaf-hoppers, sometimes incorrectly called "Thrip," spray with 

 nicotine or with kerosene-emulsion while the insects are young, and 

 before they can fly. Later in the fall, clean up all rubbish and burn 

 after cold weather sets in. 



For climbing cut-worms, use cotton bands or bands of sticky mix- 

 ture. On tender growth these can be put on strips of paper. 



GENERAL TREATMENT FOR CURRANTS AND GOOSEBERRIES. 



San Jose and European fruit scale are often found upon these bushes. 

 Inspect carefully for them. If found, spray before growth starts with 

 strong lime-sulphur. 



Just as the Leaves are Expanding, spray with dilute lime-sulphur or 

 Bordeaux and two pounds of arsenate of lead to every fifty gallons. 



Repeat this spraying when the fruit is about one-fourth grown. 



