Masters Theses

Date of Award


Degree Type


Degree Name

Master of Science


Agricultural Biology

Major Professor

Paris L. Lambdin

Committee Members

Lyle E. Klostermeyer, M.L. Pan, Charles D. Pless


Of the nine insecticides evaluated Ambush®, Cygon® and Pounce® most effectively suppressed aphid populations on tomatoes. Significantly lower fruitworm damage occurred on the carbamate and synthetic pyrethroid treatments than on the Cygon treatment or the untreated check.

The tomato fruitworm migrated an average of 10 cm a day on tomato plants while 69% of observed feeding occurred on the fruit and 31% on the foliage. Larvae were unable to survive on a diet solely of tomato fruit, while larvae reared on tomato foliage were significantly smaller than larvae reared on artificial diet. Adult females preferred to deposit eggs on the underside of leaves and on fruit.

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