The Enid News and Eagle, Enid, OK

Ag

September 22, 2012

Volunteer wheat must be eradicated

ENID, Okla. — With recent rains over much of northwest Oklahoma, we will have a flush of volunteer wheat.

This volunteer needs to be killed as soon as possible this fall so it will be completely dead at least two weeks before any wheat is planted.

The main reason for wanting the volunteer wheat dead is volunteer is a host for the wheat curl mite. This mite is the most important vector of several wheat viral diseases. The major viral diseases of note would be wheat streak mosaic virus, high plains virus and triticum mosaic virus. With volunteer wheat still alive in the field, the wheat curl mite moves from the volunteer to the newly emerged wheat crop.

Once wheat curl mites leave the volunteer, they can spread to other areas of the field in the wind. The mites can only survive for about a week unless they find another green living host plant like emerged wheat.

Another insect, Hessian fly, also emerges with the recent rains. Hessian flies emerge from over-summering pupae found in old wheat crowns and residue from last year’s wheat crop. Emerged volunteer wheat has the chance to become infested with Hessian flies. If infested, the lifecycle of the Hessian fly population will continue and could re-infest the emerged wheat crop.

Newly emerged volunteer wheat also will be an ideal landing site for an early wave of greenbugs and bird cherry oat aphids. Greenbugs and bird cherry oat aphids can vector barley yellow dwarf to the new wheat crop.

By controlling any new germinated volunteer wheat now, producers can help prevent these insect pests from becoming established in the new wheat crop. This will not guarantee planted wheat will not become infested with barley yellow dwarf from aphids coming in from other locations, or at other times of the year, but it will help.

At this time, most producers will utilize the full labeled rate of a Glyphosate product with the proper rate of ammonium sulfate additives. Some producers may choose to utilize 2,4-D or dicamba where other plant material will not be damaged. These tank mixes will help control weeds that are difficult to control with glyphosate alone and will help reduce the chances that glyphosate tolerant weed populations to develop. If 2,4-D or dicamba is used, plan on a waiting period of three days per ounce of product used in the tank mix. Both products run some risk of injuring emerging wheat.

Your Oklahoma Cooperative Extension Service ag educator will help you with insect control in winter wheat and weed control options that producers can use. Educators are usually located in the county courthouse, or utilize the phone book to give them a call for help.

Gribble is Oklahoma Cooperative Extension Service northwest area agronomist.

1
Text Only
Ag
  • farm - Rick Nelson web.jpg Wheat tour to provide crop information

    Damage to wheat from the recent freeze will depend on growth stages and temperatures. It will take approximately seven to 10 days following a freeze to determine damage.

    April 19, 2014 1 Photo

  • FFA logo.jpg Drummond students receive honors

    Several members traveled to Alva for the Northwestern Oklahoma State University Interscholastic Contest.

    April 19, 2014 1 Photo

  • farm - garber ffa web.jpg Garber FFA members place in speech contests

    The Ag 1 quiz bowl team placed fourth and qualified for state. On the second day of the event, the animal science quiz bowl team placed second and qualified for state.

    April 19, 2014 1 Photo

  • Danna Zook cutout web.jpg Producers need to consider cow supplements

    Springtime for many Oklahoma producers often means calving time.

    April 12, 2014 1 Photo

  • Master Gardener logocmyk.jpg It’s time to dirty hands

    Bees are venturing out to visit the new flowers. Keep a close watch on your garden. Often, helpful pest-destroying insects are out, getting ready to work for you, also. These, and the bees helpfully pollinating flowers, shouldn’t be discouraged by the undiscriminating spraying of insecticides.

    April 12, 2014 1 Photo

  • farm - 4H web.jpg 4-H’ers meet with state lawmakers

    Sen. Eddie Fields spoke to the group upon their arrival at the Capitol.

    April 12, 2014 1 Photo

  • Canola tour to have stops in area

    The tour will be held at the canola field of Flying G Farms located 91⁄2 miles west of Orienta on U.S. 412 and then north into the field.

    April 12, 2014

  • farm - Rick Nelson web.jpg Money up front can mean bigger returns later

    Implants are a safe, effective technology that typically offer a 10-to-1 return on investment.

    April 5, 2014 1 Photo

  • FFA logo.jpg 9 area students to receive WLC program scholarships

    FFA members will tour our nation’s capital, visit with members of Congress and perform a service learning project within the Washington area, while building friendships with fellow FFA members from across the nation.

    April 5, 2014 1 Photo

  • FFA logo.jpg NW Oklahoma FFA members named proficiency finalists

    Three finalists are selected in each of 49 agricultural proficiency award categories. The state winner in each area will be announced April 30 during the 88th State FFA Convention held at the Cox Convention Center in Oklahoma City.

    April 5, 2014 1 Photo

Featured Ads
Facebook