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153. Derived from: Legner, E. F., R. D. Sjogren, G. S. Olton
& L. Moore. 1976. Control of biting and annoying gnats with
fertilizer. Calif. Agric. 30(2): 14-17. Naturally
breeding field populations of Hippelates eye gnats and Leptoconops
biting gnats were reduced with granular and spray applications of urea to the
soil. Control ranged from 10-96
percent depending on the dosage and application method (disked or
surface-applied). Possible modes of
action are mechanical abrasion of gnat larvae, and the favoring of fungal
infections. The use of urea as a
substance harmless to natural enemies may be beneficial in the integrated
control of pestiferous soil arthropods. Page 14 Page 15 Page 16 Page 17 |
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