• 50°

Scott Tilley: Fighting weeds is ongoing battle

There is no doubt that Roundup resistant weeds have become an issue for some of Rowan County farmers.
If not an issue now, it will be soon enough. Many farmers that I have met in the past months have asked me one question. ěHow can I kill it?î
First, do not be afraid to walk out in the field and spend a few hours pulling the plant up by hand. Though time consuming and labor intensive, it is a sure way to free your fields of the weed and thus reducing the amount of plants that may return next year.
If a small amount of resistant weeds have been spotted, hand pulling the weed is your best option.
However, I understand this is not the answer farmers want to hear.
Therefore, my second answer is to use a chemical with a different mode of action (MOA).
What is a MOA? MOA describes the direction or path by which the chemical will attack the plant at the cellular level. Glyphosate (a glycine herbicide) when applied inhibits the plants ability to form chemical compounds derived of amino acids which are crucial to a plantís growing ability.
Plants in North Carolina such as horseweed or Palmer amaranth have naturally evolved to resist the affect of glyphosate. It is recommended that farmers who are faced with resistant weeds use a tank mix.
It is crucial to use two different chemicals with two different MOAs, with which the plants naturally growing process can be disrupted at different cellular processes.
Consider the MOA of each herbicide used when mixing your tank and always follow label recommendations. Furthermore, take into account that pre-plant and pre-emergent herbicides are the most effective herbicides against resistance weeds.
If a weed is allowed to grow 6 inches or taller, the effectiveness of the herbicides used will decrease dramatically. Apply pre-plant and pre-emergent herbicides.
Overall, it is our ultimate goal to not have such resilient weeds in our fields. Over the past few years, researchers have developed the PAMS approach to dealing with not only resistant weeds but for any pest in general.
PAMS stands for Prevention, Avoidance, Monitoring and Suppression.
Prevention tells us to take steps such as cleaning farm equipment when traveling from field to field. Avoidance can be practiced when the pest is present but the impact is low.
Avoidance is crop rotation, choosing cultivars with genetic resistances, using trap crops or pheromone traps.
Monitoring is one of the most important steps to follow. It is vital to know what pest you are dealing with. Take the time to walk troubled fields or areas where you know pests can occur.
Keep records or create pest maps. This will help in producing a plan of action or crop selection for the future.
Finally, if the previous steps are not successful, cultural practices should be used such as no-till, stripe till or the use of narrow or wide rows. Chemical controls are important in this stage as well.
Identify the correct pest and always follow application instructions located on the label before apply a chemical suppression.
For more information on herbicide resistance or for herbicide formulations, please call Scott Tilley at 704-216-8970 or email at scott_tilley@ncsu.edu.
Scott Tilley is extension agent who specializes in field crops.

Comments

Comments closed.

Local

Dukeville lead testing results trickle in, more participation needed

Education

Faith Academy interviewing staff, preparing site for fall opening

News

Volunteers work around obstacles, alter procedures to offer free tax services to those in need

Education

Education shoutouts

Local

Retired Marine gets recognition for toy collection efforts

Local

March issue of Salisbury the Magazine is now available

Education

Five get Dunbar School Heritage Scholarships

Education

Education briefs: Salisbury Academy fourth-graders think big as inventors

Education

Bakari Sellers keynote speaker at Livingstone College Founder’s Day program

Nation/World

Biden aims to distribute masks to millions in ‘equity’ push

Nation/World

Chief: Capitol Police were warned of violence before riot

Nation/World

GOP rallies solidly against Democrats’ virus relief package

Nation/World

FDA says single-dose shot from Johnson & Johnson prevents severe COVID

High School

Coaches, lawmakers react to governor’s order expanding sporting event capacity

Coronavirus

Three new COVID-19 deaths, positives remain below triple digits

BREAKING NEWS

Gov. Cooper announces end to curfew, changes to restrictions affecting bars, high school sports

Crime

Blotter: Two charged after call about package

Crime

Salisbury Police investigating two shootings

Crime

Chase involving Kernersville man ends in woods behind Carson High School

News Main

North Rowan girls end season with playoff loss to Murphy

Education

Rowan-Salisbury EC department plunges in place after raising $1,300 for Special Olympics

Nation/World

Tiger Woods injured in car crash, has surgery on legs

Local

Local stakeholders set goals, direction to tackle city’s housing issues

Education

RSS board talks future of Henderson Independent School