. Agriculture for the Kansas common schools. Agriculture. 364 AGRICULTURE groove. It lies flat upon the bark, and ranges from a tiny- point to the size of an ordinary pinhead, depending on the degree of development. Beneath the protective scale- like covering is a lemon-yellow, soft-bodied object—the real insect. It passes the winter in a dormant state as a three-fourths grown insect lying fiat on the bark. With the flow of sap in the spring, it begins to suck the sap from the tree or shrub and continues to grow. About the first of June it is fully grown, and then it begins to give birth to li
. Agriculture for the Kansas common schools. Agriculture. 364 AGRICULTURE groove. It lies flat upon the bark, and ranges from a tiny- point to the size of an ordinary pinhead, depending on the degree of development. Beneath the protective scale- like covering is a lemon-yellow, soft-bodied object—the real insect. It passes the winter in a dormant state as a three-fourths grown insect lying fiat on the bark. With the flow of sap in the spring, it begins to suck the sap from the tree or shrub and continues to grow. About the first of June it is fully grown, and then it begins to give birth to living young, and continues this at the rate of nine or ten a day for a period of six weeks. The young scales reach maturity and begin to bear living young in about one month from the date of their birth. There are four genera- tions of the San Jose scale in one season, and it has been estimated that the progeny of a single female, if none were destroyed, would amount to about 3,216,000,000 indi- viduals in a single year. San Jose scale may attack many kinds of trees, shrubs, and vines, but is primarily a pest of fruit trees, peach trees being most liable to serious infestation. Fruit trees and many shrubs can not be grown successfully where the scale has secured a foothold if no effective efforts are made to control it. That San Jose scale can be controlled has been thor- oughly demonstrated by thousands of fruit growers. Some of the general steps in this process are, first, to cut. Apple infested with San Jose scale. Natural 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 Call, Leland Everett, 1881- [from old catalog] comp; Kent, Harry Llewellyn, [from old catalog] joint comp. Topeka, The State of Kansas state printing plant
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectagriculture, bookyear
