The Horticulturist's RuleBook Author:Liberty Hyde Bailey Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: CHAPTER III. FUNGICIDES, FOR PLANT-DISEASES. The results obtained from the use of any insecticide or fungicide depend much upon the operator. Timeliness, t... more »horoughness, and persistence are the watchwords of success. It is easier to keep an enemy away than to drive him away. The worst foes are often the smallest ones, and the injury is often done before they are detected. Be ready, and begin early. Few people spray with sufficient thoroughness. The two most important fungicides are ammonia- cal carbonate of copper and Bordeaux mixture. The former is cheaper and more easily applied. The latter is more adhesive and generally the best. It may be applied even in the rain to advantage, when fair weather does not present itself. In case any disease is not mentioned, or you are in doubt and cannot secure advice, use one or the other of these preparations. Copper carbonate costs from 40 to CO cents per pound. Copper sulphate costs 4 to 6 cents per pound. Ammoniacal carbonate of copper. — 1. Carbonate copper, 1 ounce; and ammonia (J to 1 quart) enough to dissolve it. The best ammonia water to use for dissolving copper carbonate is made by using 1 volume 20 Beaumfi, with 7 or 8 volumes of water. It can be kept indefinitely in corked bottles. Dilute with !l gallons of water when wanted. This is the handiest formula. 2. Into a vessel having a capacity of 2 quarts or more, pour 1 quart of ammonia (strength 22 Beaumfi), add 3 ounces carbonate of copper. Stir rapidly for a moment and the carbonate of copper will dissolve in the ammonia, forming a clear liquid. The concentrated liquid thus prepared may be kept indefinitely. Dilute to 25 gallons. 3. Carbonate of copper, 5 ounces ; ammonia (26), 3 pints ; water, 46 gallons. It is better to wet the carbonate before dissolvi...« less