. Effective farming; a text-book for American schools. Agriculture. Fruit-growing 243 144. Air drainage in fruit-culture. — An important factor in fruit production is air drainage. Cold air is heavier than warm air and drains down hill and remains in low places, and these areas are more subject to frost than higher areas. Frost at blossoming time will injure the blossoms. Often when orchards are planted on hillsides, the blossoms on trees near the bottom of the hill will be injured by frost, while those higher up the slope will escape damage. Thus the se- lection of a site where late frosts se
. Effective farming; a text-book for American schools. Agriculture. Fruit-growing 243 144. Air drainage in fruit-culture. — An important factor in fruit production is air drainage. Cold air is heavier than warm air and drains down hill and remains in low places, and these areas are more subject to frost than higher areas. Frost at blossoming time will injure the blossoms. Often when orchards are planted on hillsides, the blossoms on trees near the bottom of the hill will be injured by frost, while those higher up the slope will escape damage. Thus the se- lection of a site where late frosts seldom kill the blossoms is of im- portance. 145. Pruning of fruit- trees.— A phase of work that must be given proper attention by an orchardist is the prun- ing of the trees. Prun- ing means the removal of certain branches. This is done in order to allow the remaining ones sufficient room and fight for proper develop- ment. Figs. 99 and 100 show a peach tree before and after pruning. Most trees produce too many branches. In trees that grow naturally, the surplus branches are crowded out by. Fig. Peach tree in need of 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 Sampson, Harry Oscar, 1879-. New York, Macmillan
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