494 IOWA DEPARTMENT OF AGRICULTURE 



LIME SULPHUR OR BORDEAUX 



8 to 10 qts. lime sulphur 4 lbs. quick lime (not slacked) 



3 lbs. lead arsenate paste or 4 lbs. copper sulphate 



IVz lbs. dry lead arsenate 50 gals, water 



50 gals, water (above formula written 4-4-50) 



3 lbs. lead arsenate paste or 

 lYz lbs. dry lead arsenate 

 If aphis (green plant lice) are present add nicotine sulphate (40% 

 nicotine at rate of 14 pint to 50 gallons of spray solution. 



Second. — Petal-Drop or Calax Spray. Spray when 95% of blossoms 

 have fallen, for first brood codling moth, green fruit worm, apple scab, 

 etc. Use lime, sulphur (5 qts. to 50 gallons water with 2 lbs. lead arsenate 

 paste or 1 lb. dry lead arsenate). 



Third. — First Side Worm Spray. Spray two or three weeks after second 

 spray. This is for "side" worms of the first brood codling moth and 

 further control of apple scab. Codling moth eggs appear about this time. 

 Use 41/^ qts. lime sulphur, or 3-3-50 bordeaux, with 2 lbs. lead arsenate 

 paste or 1 lb. dry lead arsenate. 



Fourth. — Last Spray. Apply the latter part of July or the fore part of 

 August (7 to 9 weeks after the eggs of the first brood codling moth ap- 

 pear) for the second brood codling moth, sooty blotch, apple blotch, black 

 rot and other fungi. Use bordeaux 4-4-50 as stated above and add 2 lbs. 

 lead arsenate paste or 1 lb. dry lead arsenate to the 50 gals, of solution. It 

 may be necessary to apply a fifth spray 2 to 3 weeks after the fourth for 

 the further control of the second brood codling moth worms. 



For more detailed information in regard to spraying the orchard and 

 garden, write to the Agricultural Extension Department, Ames, Iowa. 



TO ESTIMATE THE AMOUNT OF SPRAY MATERIAL NEEDED. 



The following estimates are made upon the basis of the average 16 to 

 20 year old apple tree to be sprayed four times: 



1. Get the exact number of trees to be sprayed. 



2. As many pounds of lead arsenate paste will be required as there 

 are trees to be sprayed or one-half as much dry lead arsenate. 



3. One-half as many gallons of lime sulphur will be required as there 

 are trees to be sprayed unless d6rmant strength is used and then 



it would require more. 



4. Where aphis, or green tree lice, are present at the cluster-bud 

 spray, about 1 pint nicotine sulphate (40% nicotine should be used) 

 to each 15 trees in the orchard. 



5. When bordeaux is to be used for the 1st, 3d and 4th sprays, it will 

 require about 1 lb. of copper sulphate and 1 lb. quick lime for each 

 tree. In case bordeaux is used for three sprays, the lime sulphur 

 order will be only one-fourth of above estimate, the lead arsenate 

 remaining the same with whichever fungicid is used. 



Order the nicotine sulphate if the aphis (plant lice) were troublesome 

 the year before. 



Spray material, spray machinery, apple barrels, boxes and other orchard 

 equipment may be bought more cheaply by joining the Iowa Fruit Growers' 



