The Black Rot of the Grape and Its Control. 413 



Outline of Plans for 1909 



The experiments of the last three years have demonstrated without 

 a doubt that the Rot can be controlled on experimental plats. Some 

 of the growers feel, however, that its control on a commercial vine- 

 yard would be more difficult. On the experimental plat the effort is 

 directed primarily to the control of the disease. The greater thorough- 

 ness which would be possible on such a plat would not be practicable 

 in a commercial vineyard. The effort of the vineyardist is directed 

 primarily toward money returns and the spraying must be done eco- 

 nomically. 



In order to meet these arguments against purely experimental work, 

 the College of Agriculture has leased for the year 1909 seventy-five acres 

 of the vineyard known as the Cushman vineyard at Romulus. The 

 plans for the summer are to conduct a large commercial experiment. 

 The necessary expenses on the seventy-five acres will be kept as low 

 as possible, although the vineyard will be maintained in good condition. 

 An effort will be made to market the grapes to the best advantage. 

 The purpose of the entire work is to secure as large net proceeds as 

 possible and leave the vineyard in good condition for next year. 



It is also planned to continue experimental work in 1909 on the same 

 vineyard but in a different part of it. A section has been selected from 

 which no grapes have been picked in years. In addition to the Black 

 Rot disease, which is the worst here, the plat selected was prematurely 

 defoliated in 1908 by downy mildew {Plasmopara viticola). If we are 

 able to control both of these diseases the contrast between the sprayied 

 and the unsprayed plats will be even more striking than previously. 



