Vegetable Research Reports

Listed below are results of IPM research projects in vegetables and agriculture that have been presented at professional meetings.

2012 Reports

Effects of Insecticide Mode-of-Action on Onion Thrips, Diane Alston, Entomologist

To gain a better understanding of how insecticide modes of action affect different life stages of onion thrips, and their fecundity and egg viability, this study treated caged and open onion plants and assessed life stage survival, egg densities in leaves, egg hatch, and thrips feeding injury to plants.  Movento, Benevia, and Radiant were all highly effective in reducing numbers of thrips larvae on plants and egg viability.  Benevia was the most effective in reducing fecundity and thrips feeding injury. 

2011 Reports

Utah Vegetable Integrated Pest Management Survey, by Marion Murray, IPM Project Leader, Diane Alston, Entomologist, and Dan Drost, Vegetable Specialist, USU

In 2011, the Utah State University Extension IPM Program surveyed the vegetable industry in the state to determine pest management practices, in particular, IPM implementation (integrated pest management). The survey was delivered and administered by the Utah office of the National Agriculture Statistics Service to 252 growers. We received a 40% response rate, representing 3,132 vegetable acres. The survey results will serve as a guide for improving the Extension vegetable IPM program through research and outreach activities, and as a resource for leveraging funds to execute this work.

2006 Reports

Utah Onion Thrips Efficacy Insecticide Trial:  Influence of Egg Hatch, Survival, and Immigration on Insecticide Importance in Dry Bulb Onion, by Diane Alston, Extension Entomologist, USU

The efficacy of six insecticides (including two new compounds) of varying rates were compared for suppression of three thrips life stages.  No differences among insecticides were detected for adults, while Lannate (methomyl) and Radiant (spinetoram) were most effective against larvae, and Lannate and Movento (spirotetramat) were most effective against eggs.

2005 Reports

Onion Thrips Control Trial, by Diane Alston, Extension Entomologist, USU

The efficacy of new and alternative insecticides for suppression of onion thrips in dry bulb onions were studied in 2005, and results showed that Success, Mustang, and BYI 8330 at 8 oz/acre had the lowest cumulative numbers of eggs and immatures as compared to the other insecticides and the untreated control.