. Introduction to botany. Botany. 316 INTRODUCTIOlSr TO BOTANY all temperate regions, have been and are still extensively used. But selection and improvement from these wild ances- tors have given us varieties greatly superior to the wild types. Even to-day, however, there are many people who plant fruit trees and act as if they believed that the tree should live and pro- duce as an essentially wild plant. The plants which are the basis of horticulture have many things in common with all other plant life. They must have suit- able soil and moisture, proper exposure to the light, freedom from d
. Introduction to botany. Botany. 316 INTRODUCTIOlSr TO BOTANY all temperate regions, have been and are still extensively used. But selection and improvement from these wild ances- tors have given us varieties greatly superior to the wild types. Even to-day, however, there are many people who plant fruit trees and act as if they believed that the tree should live and pro- duce as an essentially wild plant. The plants which are the basis of horticulture have many things in common with all other plant life. They must have suit- able soil and moisture, proper exposure to the light, freedom from de- structive enemies, and proper cultivation, else they cannot manufac- ture their own food material and the fruit which men want to produce. Most of the soil of the United States is good for hor- ticulture if men will do the things necessary for proper production of fruit. Distant re- gions may for a time seem attractive to fruit growers, on account of their freedom from diseases, but diseases eventually enter even these distant regions and affect the crop. Migration to new territory is not nearly so important in fruit growing as a thorough study and application of the science of Fig. 235. An old grafted apple tree This illustrates an old and -well-nigh discarded method of stem grafting. The stocl!; is much larger than the scion, owing possibly to imper- fect union of tissues and possibly to difference in normal rate of stem thickening. The absence of proper care in pruning this tree is a feature too often seen. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bergen, Joseph Y. (Joseph Young), 1851-1917; Caldwell, Otis William, 1869- joint author. Boston, New York, [etc. ] Ginn and company
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