. Injurious insects : how to recognize and control them . Insect pests; Insect pests. Fig. 172. âThi' Sweet Potato Flea-beetle. Enlarged and nat- ural size. Original. insects, one sixteenth of an inch long. In tlu'ee or fom' weeks the beetles practically all disap- pear, ha\"ing migrated to wild plants of related species. The only injury is at the beginning of the season. Dip the plants in arsenate of lead when setting them out, immersing the tops but not the roots. I'-se 1 pound of lead arsenate to S or 10 gallons of water. In addition, spray the plants \\-ith arsenate of lead about ten
. Injurious insects : how to recognize and control them . Insect pests; Insect pests. Fig. 172. âThi' Sweet Potato Flea-beetle. Enlarged and nat- ural size. Original. insects, one sixteenth of an inch long. In tlu'ee or fom' weeks the beetles practically all disap- pear, ha\"ing migrated to wild plants of related species. The only injury is at the beginning of the season. Dip the plants in arsenate of lead when setting them out, immersing the tops but not the roots. I'-se 1 pound of lead arsenate to S or 10 gallons of water. In addition, spray the plants \\-ith arsenate of lead about ten days later, to protect new foliage. Plants that are set out late will escape serious injmy. Fig. 171. -\Vork^ beetle. â the .-^weet rotato Flea- 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 O'Kane, Walter Collins, b. 1877. New York : The Macmillan Company
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsectp, bookyear1912
