Wheat was surface-treated with acetone extract of dill seed and exposed to rice weevils, Sitophilus oryzae (L.). At 2000 ppm, dill extract provided complete protection 1-day after treatment, and still provided 68.13% reduction of the F1 generation after treated wheat was stored for 52 weeks. One day after treatment, dosages of 1000 and 500 ppm reduced the F1 generation 81.86 and 21.99%, respectively, and the effect decreased rapidly.

Dill seed, Anethum graveolens, rice weevil, Sitophilus oryzae
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Author notes

1 This paper reports the results of research only. Mention of a proprietary product does not constitute a recommendation or an endorsement by the USDA.

© 1989 Georgia Entomological Society, Inc.
1989