4SG Important Orchard Pests and Spray Formulae. 



sulphur may be pasted with a small amount of water. Sulphur 

 mav be readily pasted by being placed in a coarse sack, im- 

 mersed in water and shaken. Stir well and boil one hour, 

 adding water as needed to keep the liquid at 50 gallons through- 

 out the boiling. The clear solution on cooling shows a density 

 of 24° to 25° Beaume and should be diluted with 4Mj to 5 parts 

 of water for scale spraying. 



The Beaume Test. — A convenient test of the weight or strength 

 of lime-sulphur solutions is the Beaume hydrometer. As the 

 weight is approximately proportional to the amount of lime- 

 sulphur in solution, any lime-sulphur solution may thus be 

 compared and the amount of dilution required to reach any neces- 

 sary strength found by reference to a " dilution table." Care 

 must be used in the test that only the clear solution is tested. 



DILUTIONS FOR SAN JOSfi DILUTIONS FOR BLIS- DILUTIONS FOR SUM- 

 DENSITY OF CLEAB SCALE, FOR 1 GAL. OF TER MITE, FOR 1 CSE ON APPLB 

 SOLUTION IN DEGREES LIME-SULPHUR SOLU- GAL. OF LIME-SUL- OR PEAR ' FOR 1 

 BEAUMfi TION PHUR SOLUTION GAL - OF LIME - 8 ™'- 



PHUR SOLUTION 



Gallons Gallons Gallons 



of water of water of water 



33 8 11 40 



32 7V 3 10y 2 38 



31 7^4 10 36 



30 6% 9y 3 34 



29 6i/2 9 33 



28 6 Sy a 31 



27 5% 8 29 



26 5V4 7% 28 



25 5 7 26 



24 4% 6y 2 24 



23 414 6 23 



22 ::■•, 5^ 21 



21 3% 5 20 



20 3% 4% 18 



These tables are arranged to secure in diluted solution: 



4. 75 ounces of sulphur per gallon for San Jose scale. 



3.56 " " " blister mite. 



1.04 " " " summer spraying of 



apples and pears as a 

 fungicide. 



Commercial Concentrated Lime-Sulphur Solutions. — When 

 composed of lime and sulphur only, the dilutions advisable may 

 be ascertained by reference to the table and by the use of hydro- 

 meter. 



Scott Formula. — Peach foliage is subject to injury by bor- 

 deaux mixture or the boiled lime and sulphur mixtures, even 

 when much diluted. II. M. Scott, of the United States Depart- 



