This section is from the book "The American Garden Vol. XI", by L. H. Bailey. Also available from Amazon: American Horticultural Society A to Z Encyclopedia of Garden Plants.
By L. H. Bailey. Pp. 16. Illustrated. Professor Bailey ascribes the general failure of the apple crop in Western New York chiefly to an unusual development of the apple scab fungus, Fusicladium dendrilicum, and recommends treating the trees with at least three applications of ammoniacal carbonate of copper, one treatment to be given before the blossoms open, one just after they fall, and another three or four weeks later. The formula recommended is to dissolve 1 ounce of (precipitated) carbonate of copper in 1 quart of aqua ammonia, and dilute when ready to apply with 25 gallons of water.
For the quince leaf-blight (Entomosporium maculatum) be recommends spraying the trees with the Bordeaux mixture, made as follows: *' Dissolve 6 lbs. sulphate of copper in 16 gals, of water. In another vessel slake 4 lbs. of fresh lime in 6 gals, of water. When the latter cools, pour it slowly into the copper solution, mixing the two thoroughly. It is best to prepare the mixture a day or two beforehand".
The chief cause of the failure of the peach crop is thought to be the "curl-leaf" (Taphrina deformans). The "yellows" of the peach is briefly described, and peach growers are warned to cut out every affected tree.
To avoid injury to the raspberry from anthracnose (Glaosporium venelum), it is recommended to keep the plants in a thrifty condition. Experiments in Wisconsin show that the foliage of the raspberries and blackberries are susceptible to injury from fungicide applications. For the strawberry blight (Sphaerella fragaria), it is suggested to spray the plants "once in a week or ten days from the beginning of the growing season until the fruit begins to ripen," with a solution of potassium sulphide (liver of sulphur), at the rate of 1 ounce to 8 gallons. After the crop is gathered the plants may be mown or burned off, or destroyed by spraying with one pint sulphuric acid in six gallons of water. New leaves soon start up and the plants are not injured.
"The mildews and rots (of the grape) can be kept in check by a timely and persistent use of Bordeaux mixture. Begin before the flowers open, and spray every week or ten days until well into August".
Fruit growers are urged to secure a state law to aid in the control of contagious plant diseases. E. S. G.
Failure of the Apple Crop.
The Books practical and poetical which relate to Flower and field, stand wedded on my shelves and wedded in my thought.
- Ik. Marvel. The American Garden.
 
Continue to: