Weed Control in Wheat
Effective weed management is one of many critical components of successful wheat production. Weeds compete with wheat for light, nutrients, water, and space while often harboring deleterious insects and diseases. Severe weed infestations can essentially eliminate wheat production and/or harvest efficiency while also creating weedy plant fragments, often reducing food and feed value.
Winter annual broadleaf weeds such as wild radish, chickweed, and henbit; perennials such as wild garlic and curly dock; and annual ryegrass are often the most problematic weeds in wheat. Although each of these pests can be problematic, it is ryegrass that poses the greatest threat to wheat production. Ryegrass populations have been confirmed to be resistant to all currently labeled effective postemergence herbicides and are becoming more common. Growers must implement management programs to delay the development or spread of resistant ryegrass.
Cultural Control Methods
One of the best tools for suppressing weeds in wheat is a healthy, vigorous crop. Good crop management practices that result in rapid wheat stand establishment and canopy development minimize the effects of weeds. Recommended cultural practices include the following:
1) Planting certified seed (free of weed seeds and garlic bulblets)
2) Good seedbed preparation – free of weeds, clods, and plant debris
3) Proper fertilization
4) Seeding at the proper rate, planting depth, and time of year
5) Management of diseases and insects
Site selection can determine one’s potential success. Growers are strongly encouraged to avoid fields heavily infested with herbicide-resistant ryegrass; rotate these fields into cropping systems that allow other effective herbicide chemistry’s for at least three years. Additionally, so as to prevent weed spread from field to field during harvest, equipment should be cleaned when moving from infested areas. This precaution can be of significant consequence in preventing or minimizing the introduction of new weed species into ‘clean areas’.
Planning a Herbicide Program
Before using herbicides, growers should know what weeds are present or expected to appear, soil characteristics (such as texture and organic matter content), capabilities and limitations including potential herbicide carryover, how best to apply each herbicide, and having an in-depth understanding of when to apply each herbicide relative to crop and weed stage of growth.
Weed Mapping
The first step in a weed management program is to identify the problem; this task is best accomplished by weed mapping. Surveys should be developed each spring to provide a written record of the species present and their population levels; plants surviving through the winter and producing seeds in the spring will likely be the most popular weeds the following season. Knowing which weed species will appear allows one to develop a more effective management program.
Before-season and In-season Monitoring
As with all crops, there should be no weeds present at time of wheat planting. Scout fields at least three weeks prior to planting and again a few days prior to planting implementing steps to remove all weedy plants prior to planting. Once the crop is planted, fields should be monitored periodically to identify the need for postemergence herbicides. Even after herbicides are applied, monitoring should be continued to evaluate the success of the weed management program, to determine the need for additional control tactics, and to determine if there is a potential herbicide resistance issue. Identifying resistance early can be essential to long-term use of a given field. Proper weed identification is necessary to ensure effective control since weed species respond differently to various herbicides. Contact your local Extension office for aid in weed identification if necessary
(Source: UGA)
KING’S CHARM: A Novel Solution for Wheat Weed Control
Now, King Quenson technical team has tested in markets for several years, we found KING'S CHARM, a novel safened sulfonylurea based product for post emergent application in winter wheat. The actives can move in the xylem and phloem to areas of new growth and taken up through plant foliage and roots, and inhibit the biosynthesis of essential amino acids in susceptible plants, through inhibition of acetolactate synthase (ALS).
Susceptible plants stop growth almost immediately after post-emergence application. Normally, weeds stop its growth after 2 days of application, leaves begin to appear chlorotic patches, followed by slow shoot necrosis. Finally, weeds will be completely killed in 4 to 6 weeks after application.
King Quenson technical team has carried out demonstration tests in different markets, we found KING’S CHARM has a reliable efficacy and broad spectrum control against grass weeds and main broadleaf weeds, such as ryegrass, brome grass, black grass, Medicago denticulate, Rumex., Melilotus sp., Chenopodium album and etc.
The best timing of application of KING’S CHARM can be made from the beginning of wheat tillering no more than a second rising knot, and when the weeds are 2 to 5 leaf stage.Choose a sunny day with a temperature above 8℃, and no cooling, rain, snow, or frost in the next three days. With one application in the right timing, growers can benefit from the faster crop establishment and less competition from the weeds, and eventually higher yields and margin.
KING'S CHARM has two formulas：
1. Oil Dispersion (OD)
2. Water Soluble Granules (WG),
to meet the application habits of different countries and regions.
As the efficacy of ACCase inhibitors on major grass weeds continues to decline, it is necessary to incorporate KING'S CHARM, an ALS inhibiting herbicide, into the grass weed management programs.
Choose KING’S CHARM, it has finishing power on grass weeds - it’s a fast-acting, long-lasting herbicide with best-in-class crop safety. Contact us today to learn more and place your order for your bountiful harvest.
Since 2003, King Quenson has been thriving to introduce the latest technologies to agricultural industries and farmers to achieve mutual development and prosperity. With years of dedication and rich experience, King Quenson devotes more than 21 years to crop protection and offers solutions.
If you have a need, you can contact us at any time:
Email: info@kingquenson.com
Tel: 86-755-86612760, 86-755-86612793
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