Archive image from page 64 of Cyclopedia of farm crops . Cyclopedia of farm crops : a popular survey of crops and crop-making methods in the United States and Canada cyclopediaoffarm00bailuoft Year: 1922, c1907 INSECTS AND DISEASES 39 Anriiracnose Caaker sPod (6) Boil 1 pound of white arsenic in 2 gallons of water for one-half hour and use the solution while hot to slake 2 pounds of good, fresh quicklime. Add water to make 2 gallons of stock solution, and use 1 or 2 quarts of this to 50 gallons of water or Bordeaux mixture. (c) Slake 2 pounds of good, fresh quicklime and add water to make
Archive image from page 64 of Cyclopedia of farm crops . Cyclopedia of farm crops : a popular survey of crops and crop-making methods in the United States and Canada cyclopediaoffarm00bailuoft Year: 1922, c1907 INSECTS AND DISEASES 39 Anriiracnose Caaker sPod (6) Boil 1 pound of white arsenic in 2 gallons of water for one-half hour and use the solution while hot to slake 2 pounds of good, fresh quicklime. Add water to make 2 gallons of stock solution, and use 1 or 2 quarts of this to 50 gallons of water or Bordeaux mixture. (c) Slake 2 pounds of good, fresh quicklime and add water to make 2 gallons of milk of lime. Add 1 pound of white arsenic and boil hard for forty min- utes. Add water to bring the resulting compound up to 2 gallons. Use 1 or 2 quarts of this stock solu- tion to .50 gal- Ions of water or Bordeaux. London Pur- ple. — This is used in the same propor- tion as Paris green, but as it is more caustic it should be ap- plied with two or three times its weight of lime, or with the Bordeaux mixture. The composition of London purple is variable, and unless good reasons exist for supposing that it contains as much arse- nic as Paris green, use the latter poison. Do not use London purple on peach or plum trees unless considerable lime is added. Once much used. Hellebore. — Fresh white hellebore, 1 ounce ; water, 3 gallons. Apply when thoroughly mixed. This poison is not so energetic as the arsenites, and may be used a short time before the sprayed parts mature. For insects which chew. Much used for currant-worms. Fungicides. The Bordeaux mixture, with variations in the propor- tion of water to suit the particular kind of plant and grade of development of the crop and of the disease, has become practically the universally used medium for spraying purposes. The standard formula is as follows : Copper sulfate, 3 to 6 pounds; quicklime, 4 pounds; water to make 50 gallons. This solution is often used successfully at half strength on delicate foliage. The so
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