SPRAYING DEMONSTRATIONS. 265 



for men and teams. An exact record was also made of the yield of tlie 

 merchantable apples, culls, and windfalls of a part of the sprayed and 

 unsprayed trees in each orchard. The market value of the fruit was 

 ascertained as nearly as possible, and the total value of the fruit from 

 sprayed and unsprayed trees calculated. Finally, records were made of 

 the percentages of wormy and scabby fruits on three sprayed and three 

 unsprayed trees of practically every variety of apple in the spraying 

 block of each orchard. 



COST OF SPRAYING. 



The cost of spraying in the different orchards is given below. The 

 time charged to the spraying includes the time spent in preparing the 

 spray mixture and hauling it to the orchard as well as the time spent 

 in applying it to the trees. The prices of materials charged are those 

 actually paid by the orchard owners, and the cost for labor is figured at 

 the prices prevailing in the neighborhoods where the work was done. 

 The cost of the spraying outfits has not been included. Allowing one 

 barrel outfit costing between $15 and $25 for each 1,000 trees, and 

 estimating the annual interest on the investment and the deterioration 

 of the machine at one-fourth the original cost of the outfit, would add 

 less than one cent per tree to the cost of spraying. One gasoline power 

 sprayer costing between $200 and $300 will take care of from 4,000 to 

 6,000 trees, depending upon the age of the trees, provided there are 

 proper conveniences for mixing the materials and for getting them to 

 the spray outfit in the orchard. This would not add more than a cent 

 or two per tree to the cost of the year's spraying. In large orchards the 

 saving in labor by using a power sprayer would more than make up for 

 the increased cost of the outfit. 



Statements and a tabular summary of the cost of spraying in the 

 various orchards are given below: 



Falls City, Richardson County. Orchard of John Gilligan; G. R. 

 Grinstead, manager. Trees 13 years old. Average number sprayed, 295. 

 Sprayed five times, using 2,550 gallons of Bordeaux mixture and arsenate 

 of lead. Used team and three men. Outfit consisted of Meyer's barrel 

 pump, one lead of hose, extension rod, double Vermorel nozzle. 



Bluestone, 217 lbs. at 8ic $18.45 



Lime, 293 lbs. at f c 1 . 83 



Arsenate of lead, 102 lbs. at 15ic 15 . 81 



Cost of material $36.09 



3 men, 6^ days at $1.50 $29 . 25 



1 team, 6^ days at $1 . 50 9.75 



Cost of labor 39.00 



Total cost $75 . 09 



