. Bulletin of the Department of Agriculture. Agriculture; Agriculture -- United States. 28 BULLETIN 643, U. S. DEPARTMENT OF AGRICULTURE. of well-tamped soil, but have been known to force their way through 2 to 3 feet of dry loose sand beneath which their pupse had been buried. Because burial and burning may be left to subordinates who may not have the interests of the owner so much at heart, boiling or sub- mergence in water is more highly recommended. The larvee will not injure cattle if the fruits are used as feed, but many larvge may escape before they are eaten; hence this method of
. Bulletin of the Department of Agriculture. Agriculture; Agriculture -- United States. 28 BULLETIN 643, U. S. DEPARTMENT OF AGRICULTURE. of well-tamped soil, but have been known to force their way through 2 to 3 feet of dry loose sand beneath which their pupse had been buried. Because burial and burning may be left to subordinates who may not have the interests of the owner so much at heart, boiling or sub- mergence in water is more highly recommended. The larvee will not injure cattle if the fruits are used as feed, but many larvge may escape before they are eaten; hence this method of destruction is not recommended unless the fruits have a real value as a food. PROTECTIVE COVERINGS. The protection of fruits and plants by covering with^oil, paper, or cloth is a great labor-consuming operation, yet this ts the only method that will protect under present Hawaiian conditions. Even. Fig. 23.—Protecting cucurbits from attack by melon flies. Each fruit (in this case of Momordica sp.) is placed, immediately after it has been fertilized, within a long envelope made of newspaper. (Authors' illustration.) as practiced to-day, less than 25 per cent of all fruits covered, except certain Chinese marrows, are actually saved from attack. In a slightly cooler climate than that of coastal Hawaii a high percentage of the fruits could be saved. As it is, the great attraction of the un- fertilized ovaries of the bloom makes it difficult to put on coverings before the flowers are infested. During the warmer portions of the year the bloom of cucurbits, with the exception of the cucumber, should be i^rotected at least three to four days before the flower unfolds. At present many fruits are covered, but rather indifferently and ineffectively. During April only 0 out of 43 fruits of the Chinese melon that had been covered were sound, while on the same date 119. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability
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