New York Agricultural Experiment Station. 363 



The exper-imental field, being near a public highway, attracted 

 a great deal of attention. Some who knew nothing of its history, 

 were much puzzled by its appearance and stopped to inquire why 

 it was so " streaked." Such was the interest in it that farmers 

 who had heard of the experiment came from several miles around 

 to see what had been accomplished by spraying. The contrast 

 between the sprayed and unsprayed portions of the field was 

 very striking. See Plate XIII. 



Expense of the Treatment. 

 The items of expense are as follows: 



Seven hundred and six* gallons of Bordeaux mixture at 



an average cost of two-thirds of a cent per gallon. ... $4 71 



Forty-nine hours labor applying the Bordeaux mixture 

 at 15 cents per hour 7 35 



Expense of carting 706 gallons of water, about 2 25 



Total |14 31 



The thirty-two rows sprayed contained 3.296 hills and covered 

 an area of a trifle more than one and one-half acres. The ex- 

 pense per acre was, therefore, |9.50. Spraying increased the 

 crop on this one and one-half acres by the amount of |260, which 

 is at the rate of |173 per acre. Deducting from the latter 

 amount the expense of spraying one acre, |9.50, we have left 

 $163.50 net profit per acre. 



Strength and Quantity of Bordeaux Mixture Used in the 

 j - Experiment. 



It will be observed that in the course of the experiment three 

 different strengths of Bordeaux mixture were used. The experi- 

 ment would have been more satisfactory if a single strength 

 could have been used throughout the season. But the second 

 spraying injured the plants and it was suspected that the Bord- 

 eaux mixture used (l-to-7 formula) had been too strong. Ac- 

 cordingly, the next two sprayings were made with weaker mix- 

 ture (1-to-ll formula). At the time of the fifth spraying it was 



*This includes the 674 gallons used on Plats I, III and V, and 32 gallons used on the 

 two test rows in Plat IV. 



