84 WILSON & TOOMKK FERTILIZER COMPANY 



How Much Spray The answer to this question de- 

 pends upon the spraying* machine and the operator, also 

 upon the size of the plants or trees. Fifty gallons per 

 acre is considered an ayerage amount of wet spray to be 

 used where the crop is set in rows, like Irish potatoes; 

 or one hundred gallons where the vines coyer the ground, 

 like watermelons. In the Maine Experiment Station they 

 used from six to ten pounds per acre of dry spray with 

 far better results from the latter, though from the plot re- 

 ceiving the ten-pound application the yield of potatoes 

 was only about three-fourths that of the plot receiving 

 the fift3 T -gallon wet spray. It is estimated by one grower 

 that a citrus tree seven feet high by seven feet wide will 

 need two gallons of spray, one 10 x 12, four gallons, and 

 one 14 x 18, ten gallons, while another valued friend al- 

 lows 750 gallons of spray per acre of large bearing trees, 



As to dust spray -A prominent grower says that he 

 used in two applications 1500 pounds of sulphur and 

 lime dust on twenty acres of young grapefruit trees, and 

 that out of 2000 boxes of fruit did not have over one box 

 of russets. He used a dust blower run by an engine, and 

 estimated the labor cost him about flO. He says the 

 extra value of his bright fruit (40 cents per box) more 

 than paid for the spraying outfit, spray and cost of appli- 

 cation. 



