The book Special Pest Control Issue was written by author California Dept of Agriculture Monthly Bulletin Here you can read free online of Special Pest Control Issue book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Special Pest Control Issue a good or bad book?
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The first operation was to place a few strands of excelsior in a cup, the top was then folded over longitudinally, a nail put through it near the top, the cup tacked to the trunk of a tree, and then filled with the syrup up to the nail. In this manner each operator after a day's practice was able to place from 40 to 50 cups an hour, or 350 to 400 a day. Labor cost $3 per day, resulting in less than . 01 per tree. The cost of the cups, nails and excelsior was about . 0065 per tree. As made up th...e poisoned syrup cost approximately 80^ per gallon, or . 008 per tree. The complete cost of treating 53, 000 trees and refilling cups on 13, 000 of them was $1, 428, or about . 024 each. The syrup was made up in 20-gallon quantities according to the fol- lowing formula: 12J gallons water, in which was dissolved 2 ounces of tartaric acid. This was heated to almost the boiling point and then 100 pounds of sugar was added slowly and well stirred until dissolved, and then allowed to boil for one hour.
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