. Cirtus fruits under irragation. Citrus fruits; Fruit-culture. Qn r^TTUTTC UT>TTr''I>o r XT /"> T T r T:^ r â ^/'A A f-^rw i\r\-\ « rÂ¥-\T-»/~« >^^wj liN ^J U 1^1 -V^ 1 Dl/ililC!) §28 some insects, in all stages of development, may be found at almost any season. The insect enemies of the Florida wax scale are about the same as those of the other scales, but only the turbinate fungus attacks them to any extent. The adult females often fall off of the orange leaves due to their own weight and perish on the ground, as at this stage they are unable to cra
. Cirtus fruits under irragation. Citrus fruits; Fruit-culture. Qn r^TTUTTC UT>TTr''I>o r XT /"> T T r T:^ r â ^/'A A f-^rw i\r\-\ « rÂ¥-\T-»/~« >^^wj liN ^J U 1^1 -V^ 1 Dl/ililC!) §28 some insects, in all stages of development, may be found at almost any season. The insect enemies of the Florida wax scale are about the same as those of the other scales, but only the turbinate fungus attacks them to any extent. The adult females often fall off of the orange leaves due to their own weight and perish on the ground, as at this stage they are unable to crawl. This shows that the orange tree is not their native home. They seldom become sufficiently abundant to make spraying necessary, but sometimes they do damage to young trees. They can be con- trolled by the same miscible oils that are used for the other scales. These sprays will kill the young Fig. 22 31. Barnacle Scale.âThe barnacle scale is very similar to the Florida wax scale except in its height, which is equal to its width. The sides rise abruptly from the margin, so that it resembles a barnacle in shape. 32. Mealy Bugs.âIn Fig. 23 are shown, in half their natural size^ colonies of mealy bugs on grapefruit. The injury they do is very apparent from the illustration. Mealy bugs are dry-weather insects, and consequently they are not the serious pests in the Florida citrus region that they are in the California groves. Usually mealy bugs are most troublesome in the spring, from March to June, which is apt to be a dry § 28 CITRUS FRUITS IN GULF-COAST STATES 31 period in Florida. These insects approach the extent of a pest more or less periodically and in many cases will disappear and reappear very suddenly, depending on whether the climatic conditions are favorable or unfavorable for their growth Ramy seasons have a tendency to hold the mealy bugs in check, and dry seasons are particulariy favorable for their increase. All parts of the tree, including
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