AgAlerts 2002 From Griggs County
By John Swenson, Griggs County Extension Agent

Issue # 10, July 8, 2002

• Wheat Leaf Rust

• Green Ash Rust

• Project Safe Send

• Sunflower Beetles are Plentiful

• Leafy Spurge Flea Beetle Collections Beginning

Wheat  Leaf Rust

    Reports of wheat leaf rust in Griggs and surrounding counties.  The level of infection has varied from field to field depending on variety and growth stage.  Fields should be monitored since recent rains have created a favorable environment for rust development and spread.   The following table was prepared by the NDSU Extension Plant Pathology Department that lists the reaction of commonly grown varieties for rust.  Either Tilt or Folicur fungicides are registered for control.  The following link will provide more infomation, NDSU publication PP589, Wheat Leaf Rust.

(reprinted from NDSU Pest Report Issue # 9, June 27th 2002)

Green Ash Rust

    Several samples of rust on green ash have been brought into the office this past week.  This is disease can cause leaves to drop and cause deformities of branches and new growth.  Normally this disease is not a problem and controls measures are not necessary.  The following photo's show what this disease looks like.  Notice the orange appearance of this disease.

Project Safe Send

    Project safe send is sponsored by the ND Department of Agriculture to help North Dakota citizens dispose of old pesticides and other hazardous materials.  A collection site at Finley has been scheduled for Thursday, July 18th at the Department of Transportation located on ND Hwy 32 on the north edge of Finley.  Collections begin at 9:00 am to 3:00 pm.  For more information, contact the Griggs County Extension office or the ND DOT @ 1-800-242-7535 and ask for Project Safe Send.

Sunflower Beetles Are Plentiful

    I have been seeing high populations of sunflower beetles and eggs on sunflower plants.  Be sure to monitor sunflowers the next week to check for numbers of larvae and how much defoliation has occurred.  Threshold for larvae are 10 to 15 larvae per plant and defoliation levels of 25 to 30%.  Insecticides Registered for Use.

Leafy Spurge Flea Beetle Collections Beginning

    The Griggs County Weed board will begin collecting leafy spurge flea beetles the week of July 8th.  Contact the Extension office at 797-3312 for locations.  Collections will be from 10:00 am to 1:00 pm each day of collection.

Please Contact Our Office For Additional Information
E-mail: griggs@ndsuext.nodak.edu
Go to the 2002 AgAlert Index Page