202 Repoet of the Botanical Department of the 

 OUTLINE OF EXPERIMENT. 



PLAN. 



The experiment field consisted of an area 212x51 feet which 

 allowed 17 rows, each 212 feet long and 3 feet wide, each row 

 thus containing approximately one sixty-ninth of an acre. 

 After excluding a row on each side of the field as an outside row, 

 there remained 5 series of rows with 3 rows in each series. 

 Row No. 1 of each series was sprayed with bordeaux mixture. 

 Row No. 2 with lime-sulphur and Row No. 3 was retained as a 

 check. By this arrangement Rows 1, 4, 7, 10 and 13 were 

 sprayed with bordeaux mixture, Rows 2, 5, 8, 11 and 14, with 

 lime-sulphur, and Rows 3, 6, 9, 12 and 15 were not sprayed. 



CULTURE OF CROP. 



The slope of the field was sufficient to afford good surface 

 drainage. The soil was a heavy clay loam. The field produced 

 a crop of wheat the previous year and was plowed in the spring. 

 Before planting, the area was harrowed twice. Seed of the 

 variety Sir Walter Raleigh was planted by hand on May 24. 

 Furrows were opened with a plow and the seed pieces placed 

 15 inches apart by the use of a gauge- rod. No' fertilizer of any 

 kind was applied at the time of planting. A horse cultivator 

 was used during the season to keep the soil in good tilth. In 

 addition to this, one light hoeing was given during the early 

 summer. The cultivation, as a whole, was such as would be 

 given a potato field on any well regulated farm. 



preparation of the spray MIXTURES. 



The concentrated lime-sulphur solution used was taken from a 



stock prepared for use in the station orchards, according to the 



Geneva Station Formula: 



Lime (95 per ct. pure) 38 lbs. 



Sulphur (high grade, finely divided) 80 lbs. 



Water 50 gal. 



This concentrate tested 24° Beaume, and in order to reduce this 

 mixture to the strength recommended for orchard spraying (1 



