814 



STATE BOARD OF AGRICULTURE. 



The average percentage of rot for the plat was as follows : 



Soap wa.s used in 5th spraying in plats 1 and 2 and Burgundy mixture (2) for the 0th and 7th spray- 

 ings. 



Although only 89.2 per cent of the fruit on the unspraved plat was 

 found by actual count to be destroyed, yet it was not considered practi- 

 cable to tvj to harvest any of it because the expense of separating the 

 small quantity of sound fruit would have been much more than its value. 

 The crop of the unsprayed plat was, therefore, practically a total loss. 

 It will be noted that there was scarcely any difference in the amount of 

 rot on the plat sprayed with 4-1-50 and that sprayed with 5-5-50 Bor 

 deaux mixture. Part of a vine from the latter plat is shown in Plate 

 II, Fig. 1 and a typical vine from a neighboring and neglected vineyard 

 showing not only complete destruction of the fruit, but also defoliation 

 which prevented the i3roj)er maturing of the season's growth of shoots. 

 —Plate II, Fig. 2. 



The following itemized account shows the gain due to spraying on plat 

 II and the corresponding gain per acre estimated, upon the same basis: 



FIVE APPLICATIONS WITH 4-4-50 BORDEAUX AND 2 OF BURGUNDY, OR 475 GALLONS 



IN ALL ON .46 ACRE. 



Cost of Labor: 



Man and team to spray, 8f hrs. at 35 cents per hour $3 00 



Man and horse to haul liordeaux mixture, 8f hrs at 35 cents per hour 2 18 



Two men to carry trailers for last 3 sprayings, 5} hrs. at 15 cents per hr. each 1 68 



Co.ST OF Materials: 



Two-thirds tube gas at S2.35 per tube 1 55 



Copper Sulphate, 26 lbs. at 8i cents 2 28 



Resin fish-oil soap, 11 lbs. at 3* cents 39 



Sal Soda, 6 lbs. at 3 cents 18 



Total cost for .46 acre $11 32 



Return.s: 



Two thousand ten lbs. of grapes harvested on sprayed plat sold at $40 per ton S40 20 



(As no fruit was harvested on the unsprayed plat, this amount is all attributed to 

 spraying.) . , , „„ 



Cost of spraying 1132 



Gain on .46 acre 828 88 



Gain per acre at same rate 62 30 



The work in 1908 was carried on in three different vineyards; Mrs. 

 Emma Smith's as already described; Mr. J. M. Towers' near Paw Paw; 



