108 



Maine Agricultural Experiment Station. 1918. 



TABLE II. 



Summary of Results Obtained in ipi6 from Sorting Fruits in 



Orchard No. i* 



Treatment 



Per cent < Per cent Per cent 



of perfect of scabby of russeted 



apples. apples. apples. 



East half. 

 Sprayed like plot 1 of 1916-_- - 



West half. 

 Sprayed like plot 5 of 1916- . 



Unsprayed Check. 

 Plot 9 in orchard No. 2, 1916 — 



45.96 

 56.68 



48.12 



0.17 

 1.24 

 38.81 



53.86 



42.11 

 20.57 



*The per cents for each plot do not always total 100, since certain apples were 

 counted twice as both scabby and russeted. 



Treatment of Plots in 1917. 



Plot 1. Thomsen's "T. P." arsenate of lead paste alone, 4 



pounds in 50 gallons of water. 

 Plot 2. Corona dry, acid arsenate of lead alone, two pounds 



in 50 gallons of water. 

 Plot 3. Blossom bud application lime-sulphur 20 per cent 



stronger than standard, plus one pound of Corona dry, 



acid arsenate of lead in 50 gallons. Later applications 



two pounds of the same arsenate in 50 gallons of water. 

 Plot 4. Blossom bud application omitted, otherwise like plot 5- 

 Plot 5. Standard dilution lime-sulphur, plus one pound of 



Corona dry, acid arsenate of lead in 50 gallons. 

 Plot 6. Standard dilution lime-sulphur, plus one pound of 



Thomsen's dry arsenate of lime in 50 gallons. 

 Plot 7. Standard dilution lime-sulphur, plus two pounds of 



Thomsen's "T. P." arsenate of lead paste in 50 gallons. 

 Plot 8. Standard dilution lime-sulphur alone, no arsenical 



added. 

 Plot 9. Unsprayed check. 

 Plot 10. Sherwin-Williams Co. dry lime-sulphur 3 pounds, 11 



ounces, and 1 pound of S-W Co., dry, acid arsenate 



of lead in 50 gallons of water. 

 The spray combinations used on plots 2, 3, 4, 5, 6, 9 and 



