This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1920 Excerpt: ...of emergence in the spring is hastened by high temperature in March, April, and May. In the state of Washington it is known that the codlin-moth does not become active unless the temperature is 60 or higher. In other words, no breeding takes place when the temperature drops below 60. Apricots 288. Apricots thrive best ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1920 Excerpt: ...of emergence in the spring is hastened by high temperature in March, April, and May. In the state of Washington it is known that the codlin-moth does not become active unless the temperature is 60 or higher. In other words, no breeding takes place when the temperature drops below 60. Apricots 288. Apricots thrive best in the hot valleys of the Southwest. The fruit ripens at a time of the year when the relative humidity is at its lowest point and the danger of showers least, consequently the conditions are the most favorable for drying the fruit. They receive little injury from either the frosts of spring or the heat of summer, compared with apples or plums. Avocado or alligator-pears 289. This is a tropical or semi-tropical fruit. The fruit of the hard-shelled type requires over a year to mature. Some varieties will stand from 5 to 10 below freezing. Strong winds are often damaging. Cherries Cherry trees do not thrive as a rule in the southern states where the summers are long and hot. The southern limit is not quite so far south as that of apples. The northern limit of sour cherries approaches that of apples while sweet cherries are slightly less hardy, corresponding more nearly to the peach. The fruit-bud formation in some cherries begins about July 1, of the previous year, in central latitudes. 290. Weather and cherries.--Some preliminary studies in Ohio indicate that if February is wet it should be cool and if warm it should be dry for best results. April should be cool and wet. In May cool weather is more favorable than warm, and in June moderately dry weather is more favorable than wet. Currants and gooseberries 291. Both currants and gooseberries are natives of cool, moist northern climates and succeed best in the United States in the northern half o...
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