Header CSU Home TRA Home

Western Colorado Entomology-Agriculture
Google
Western Colorado Entomology
Web
Colorado State University

Agriculture

Biological Control

Horticulture and Garden

Human and Animal Health

Home Use Pesticide

Links

Native Insects

Pesticide & Regulatory

Residential & Commercial

Seed Production

Trees

Photo Gallery

Link to Home page

Adobe Acrobat

This page was updated on November 5, 2009
Agricultural Updates
Agricultural Pests

Differentiating Onion Thrips and Western Flower Thrips

How to determine the difference between Onion Thrips and Western Flower Thrips.
Onion Thrips or Western Flower Thrips (html)
Onion Thrips or Western Flower Thrips (pdf)
Onion Thrips (left) Western Flower Thrips (right)
Research Project Reports
Alfalfa

Alfalfa Crown Borer

This nearly unknown insect has damaged alfalfa fields in the Tri River Area in the past few years. It was widespread in 2006, and present ina few Mesa dn Delta County fields since then. It has been identified as a form of Clover rot curculio with an abnormal feding behavior.

Alfalfa Crown Borer (html)

Roundup Ready Pollen Movement.

We conducted a study in 2006 to determine the role of alkali bees play in moving Roundup Ready pollen from alfalfa seed production fields in Mesa County. Pollen movement took place, but honey and leaf cutter bees played a greater role than alkali bees.

Movement of Roundup Ready® Alfalfa Pollen (pdf) Map of Fruita Alfalfa Fields

Spider Mite Control in Seed Alfalfa 2007

Using Acramite to control two spotted spider mites in seed alfalfa.
Spider Mite Trial, Seed Alfalfa, 2007 (pdf)
Spider Mite Trial, Seed Alfalfa, 2007 (html)
 
     
     
     
Corn

Management of High Plains Disease in Western Colorado Sweet Corn

High Plains Disease is viral disease recently found in corn, wheat and related grasses. Wheat curl mite is responsible for the transmission of this virus.
TRA Article on High Plains Disease in Sweet Corn (html)
TRA Article on High Plains Disease in Sweet Corn (pdf)
Sweet Corn with High Plians Disease

Nuclear Polyhedrosis Virus for Corn Earworm Control in Sweet Corn

We conducted an aerial trial using Gemstar, and nuclear polyhedrosis virus to control corn earworm in sweet corn. Results were promising, with some control equal to commonly used pyrethroid insecticides.
Gemstar for Corn Earworm Control (pdf) Aerial Application

Sap Beetle Biology and Control in Sweet Corn

Research was conducted in 2004 to investigate the biology and control of sap beetles in western Colorado sweet corn. The report outlines the findings of this research.

Sap Beetle in Sweet Corn (pdf) Adult Sap Beetle on Kernal of Corn

Spider Mite Trial, 2007

A comparison among Oberon, Onager, and Comite for control of spider mites in field corn.
Gowan Report, Spider Mites, 2007 (pdf)
Gowan Report, Spider Mites, 2007 (html)
 
     
     
     
Onions
Foliar Onion Thrips Insecticide Trial, 2004 Onion Trial 2004 Harvesting Onions
IR-4 Foliar Insecticide Trial, Onion Thrips, 2005 IR-4 Onion Trial 2005
Regent Seed Treatment Trial, Onion Thrips, 2006 Regent Onion Trial 2006
Foliar Onion Thrips Insecticide Trial, 2006 Foliar Onion Trial 2006
IR-4 Seed Treatment Trial, Onion Thrips, 2007 IR-4 Onion Trial 2007 (pdf)