100 



Report of State Board of Horticulture. 



made between showers or even when the rain was falling. 

 Near the middle of this block of trees, eleven trees w^ere left 

 unsprayed, and at picking time four trees were selected, two 

 sprayed and two unsprayed, which stood near together and 

 were as nearly alike as it was possible to select. The fruit 

 from each tree was carefully gathered and divided into three 

 grades. The first consisted of fruit entirely free from scab; 

 the second, of that which was slightly scabby — ^that is, fruit 

 that had only one or two slight specks of scab; and third, of 

 fruit that was very scabby. There was also such a notice- 

 able difference in the size of the fruit from the sprayed and 

 the unsprayed trees that the fruit was then regarded upon 

 the basis of size, in an attempt to determine the amount of 

 this increase. This was done, first by measuring the fruit 

 with calipers, and second, by weighing it. In measuring the 

 fruit the points of the calipers were set two and one-half 

 inches apart and everj^ apple that could be passed between 

 the points was placed in the culls. 



The following table shows the results of spraying with 

 bordeaux, both on the amount of scab and upon the size of 

 the fruit: 



TABLE SHOWING EFFECT OF SPRAYING UPON THE AMOUNT OF 



SCAB AND SIZE OF FRUIT. 



Treatment. 



Sprayed 



Sprayed 



Not sprayed 

 Not sprayed 



Weight, 

 pounds. 



71 



5t> 



99 



14S 



To summarize the results: The two trees that were not 

 sprayed bore 215 apples more than the others, but the trees 

 that were sprayed bore approximately ten times as much 

 fruit free from scab as the trees that were not sprayed, 'or 

 to state it in percentages, on the trees that were not sprayed 

 only 7 per cent of the fruit was free from scab, while on those 

 that were sprayed 70 per cent of the fruit was free from 

 scab. On the two trees that were sprayed, of the 1,902 apples 

 borne, 1,147 measured over two and one-half inches in dia- 



