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For red spider and plant mites use flowers of sulphur as a dry powder dusted overthe trees when covered with dew or immediately after a rain. For hibernating insects use a miscible or soluble oil at the rate of 1 part of oil to 12 or 15 parts of water.Fungicides: Bordeaux mixture; 5 lbs. copper sulphate and 5 lbs. lime in 50 gal. water. Ammoniacal copper carbonate; 6 oz. copper carbonate and 3 pts. ammonia in50 gal. of water. Copper sulphate is used, with lime to colour it. For killing fungi on dormant plants. Lime sulphur mixture also acts as a fungicide. Symptoms and Treatments. The following list shows in parallelcolumns (1) the symptoms which appear upon diseased plants or thosewith insect pests, (2) the cause and lastly (3) the indicated treatment. |
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