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Description: |
3 pages : illustrations, table ; 26 cm. |
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With Note: |
With: Residues of malachite green in muscle, eggs, and fry of treated Atlantic salmon and chinook salmon / by J.L. Allen.(No. 101) : Effects of water temperature, hardness, and pH on the toxicity of benzocaine to eleven freshwater fishes / by Terry D. Bills, George E. Howe, and Leif L. Marking. (No. 102). |
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Bibliography Note: |
Includes bibliographical reference (page 3). |
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Summary, Etc. Note: |
Abstract: Because concerns have been expressed about the effects of irrigating truck-garden crops with water from a stream treated with the lampricide 3-trifluoromethyl-4-nitrophenol (TFM), studies were conducted on the effects of TFM on young plants of common vegetables and fruits. Plants established in horticultural flats were irrigated for 12 hours with water containing 10 mg/L of TFM and later compared with plants irrigated for a similar period with untreated water. Lettuce, radish, sweet corn, and potato plants were virtually unaffected. Green bean and tomato plants developed brown or dead spots on many leaves but growth rates and survival were not affected. Cucumber and cantaloupe plants were severely damaged; some were killed and about 40% of the leaves on surviving oplants were dead or dying. Two weeks after treatment, the mean weight of surviving treated cantaloupe plants was significantly less than that of control plants. |