. Cirtus fruits under irragation. Citrus fruits; Fruit-culture. 4U UllKUS l^KUriS UNUliK iKKlGATiON §24 in its native home led to the belief that there must be some natural parasite in its native habitat that controlled it. This was found to be the case, and accordingly, in 1889, the United States Division of Entomology of the Department of Agricul- ture, introduced the Australian ladybird beetle. In a few years it was reported that the beetle had the cottony cushion scale. Fig. 17 under control; apparently such has been the case ever since. For this reason the cottony cushion scale, although
. Cirtus fruits under irragation. Citrus fruits; Fruit-culture. 4U UllKUS l^KUriS UNUliK iKKlGATiON §24 in its native home led to the belief that there must be some natural parasite in its native habitat that controlled it. This was found to be the case, and accordingly, in 1889, the United States Division of Entomology of the Department of Agricul- ture, introduced the Australian ladybird beetle. In a few years it was reported that the beetle had the cottony cushion scale. Fig. 17 under control; apparently such has been the case ever since. For this reason the cottony cushion scale, although one of the commonest insects found where citrus fruits are grown, is at present considered as a pest of little consequence in citrus groves. The adult cottony cushion scale has the habit of hiding in crevices and in the forks of the twigs, but infests the larger § 24 CITRUS FRUITS UNDER IRRIGATION 41 branches and the trunk of the tree as well The adult , seale has a very eharaeteristic appearJe wILlreayr^t tmg^shes ^t from any other eitrus seale insect. TS'^sctle' nsect proper is reddish or yellowish brown in color Each Xtd IT'^ '™" "^ ^° "^ ''^^ -'i -^h them i sexS a hqmd that, on exposure to the air. swells greatly and fonm a soft cushion in which the eggs are found. This cushk,n X on Its head. This pure white cottony mass may reach a length the scale its other name, fluted scale. The female scale, uS the other scales mentioned, travels throughout the g^eaS part of her life, or at least until the egg sac'is secreted"^ £. 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 Scranton : International Textbook Co.
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Keywords: ., bookcentury1900, booksubjectcitrusfruits, booksubjectfruitcultur
