The Black-rot of the Grape, and its Control. 



225 



not numerous. The disease was first seen on the berries about July loth. 

 On July 13th, all the berries were picked from a sprayed and unsprayed 

 vine and counted. Seventeen per cent had rotted on the sprayed vines, 

 and twenty-seven per cent on the unsprayed. A slight epidemic ap- 

 peared to have swept over the vineyard about this time. Following this, 

 there was a period of dry weather and very little rot appeared. No other 

 epidemic appeared during the season. 



Fig. 1S7 — The bagging of grapes.' 



The grapes were picked October 21st and 2 2d. A heav}^ frost 

 occurred on the morning of October 21st. This did not interfere with 

 picking or grading of the grapes. Records were made of the net yield as 

 picked. The fruit was then taken to the packing house and graded. The 

 weights of the commercial grade and the culls were then computed. 

 The green grapes were placed in a grade by themselves. The results 

 obtained were as follows: 



Total weight Weight com- 

 grapes mercial grade 



lbs. lbs. 



Sprayed rows 1322 1291I 



Unsprayed rows 606 5642 



8 



Weight 

 culls 

 Ibs.^ 



3oi 

 412 



Per cent 

 commercial 



97 

 93 



