100 



PEACH LEAF CURL: ITS NATURE AND TREATMENT. 



Table 17. — Excess of imperfectly developed fruit bads on unsprayed trees. 



Records. 



Length of old •wood, measured in inches, on sprayed and unsprayed trees. . 



Number of imperfectly developed fruit buds 



Average number of imperfectly developed fruit buds to inch of wood 



In favor of unsprayed trees -- percent 



7,363 



9,200 



1.249 



32 



In comparing the number of well-developed fruit buds which were 

 produced in 1893 by the sprayed and unsprayed trees, independent of 

 the number of spur buds, it was learned that the number upon the 

 sprayed trees was 20 per cent greater, as shown in the following table, 

 than the number produced by the unsprayed trees. 



Table 18. — Gain in well-developed fruit buds, exclusive of spurs, on sprayed over 



unsjirayed trees: 



Taking the aggregate of all well-developed fruit buds, including the 

 spurs, at an average of 3 buds each, the sprayed trees make a still better 

 showing when contrasted with the unsprayed. The average number of 

 all well-developed buds on the spraj^ed trees was 1.919 per linear inch 

 of old wood, and on the unsprayed trees 1.137 per inch of old wood. 

 This shows a gain of 35 per cent in well-developed fruit buds in favor 

 of the sprayed trees. These facts are shown in tabular form as follows: 



Table 19. — Gain in spur buds and other well-developed fndt buds on sprayed over 



unsprayed trees. 



One of the most striking contrasts shown bj^ the data obtained in 

 these field studies is that existing between the number of fruit spurs 

 and spur buds produced by the sprayed and unspraj^ed trees in 1893. 

 There was a net gain in the number of 'fruit spurs and spur buds on 

 the sprayed trees of 118 per cent above the number produced b}'- the 

 unspra3'ed trees, a fact that should certainly appeal directh^ to the 

 business faculties of every grower of peaches. It should also be 

 remembered that these sprayed trees had carried a crop while pro- 



