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



2i; 



grades, usable and nonusable. These grades were arbitrarily chosen. 

 Under the head of usable, were classed those bunches of which the 

 majority of berries were sound. Some bunches were nearly perfect; 

 others contained a few rotted berries. One could scarcely call the fruit 

 of this grade marketable. 



As non-usable, were classed the remaining clusters of which the 

 majority of berries had rotted. The number of usable and non-usable 

 clusters was counted in every case. Each grade was also weighed. 



Fig. 184 — Fruit from sprayed and check rows. 



From left to right: 



1. Non-marketable fruit from check row . 



2. Marketable fruit from check row. 



3. Non-marketable fruit from sprayed row. 



4. Marketable fruit from sprayed row. 



In the case of the Niagara Grape Company, the fruit that remained 

 on the vines after the Experiment Station men had computed their 

 results was picked by Mr. Lansing hiinself. This was taken to the pack- 

 ing house and graded by the packers. A record was made of the number 

 of pounds picked from each row. 



The results in tabular form are given below: 



1. Check 



2. Bor.— sulphur 6 lbs 



3. " " 4 " 



4. " " 2 " 



5. Check 



6. Bor. 2 ap. A. C. C. 3 ap. 



7. " s applications 



8. " 4 " 



9. "3 " 



10. Check 



1 1 . Bor. 6-4-40 



12. " 4-4-40 



13. Check 



No. lbs. 

 of fruit 

 packed 



for 

 market 



6i 



8ii 



103J 



ii8i 



i 

 99 

 61 

 84 



6s 



46 

 36 



Niagara Grape Co. 



Clusters 



Usa- 

 ble 

 % 



27 

 59 

 68 

 78 

 18 



79 

 70 

 62 

 6S 

 3 

 62 



34 

 20 



Non- 

 Usa- 

 ble 

 % 



73 

 41 

 32 

 22 



83 



21 

 30 

 38 



35 

 97 

 38 

 66 

 80 



Weight 



Usa- 

 ble 

 % 



55 

 81 

 88 

 92 

 40 



87 

 84 

 84 

 79 



12 



86 

 60 

 31 



Non- 

 Usa- 

 ble 

 % 



45 

 19 

 12 

 8 

 60 



13 

 16 

 16 

 21 

 88 

 14 

 40 



69 



H. H. Bradley's. 



Clusters 



Usa- 

 ble 

 % 



24 

 73 

 82 

 84 

 40 

 70 

 86 

 81 

 77 

 43 

 81 



87 



SO 



Non- 

 Usa- 

 ble 

 % 



76 

 27 

 18 

 16 

 60 

 30 

 14 

 19 

 23 

 57 

 19 

 13 

 SO 



Weight 



Usa- 

 ble 

 % 



47 

 87 

 90 

 92 

 66 

 84 

 93 

 93 

 87 

 67 

 92 

 94 

 64 



Non- 

 Usa- 

 ble 

 % 



53 

 '3 

 10 

 8 

 34 

 16 



7 



7 



13 



33 



8 



6 



36 



