Too often producers do not notice mustard weeds in their wheat fields until the mustards start to bloom in the spring. As a result, producers often do not think about control until that time. Minimize yield loss by getting control of these weeds by late winter or very early spring.
The new 2020 K-State Weed Control Guide is now available online! Don't miss this valuable resource brought to you by K-State Research and Extension. Hard copies will be available soon.
Controlling marestail in soybeans continues to be a big challenge for Kansas no-till producers. Application timing and weed size are critical factors for successful control of this weed that germinates in the fall or early spring.
Producers should pay close attention to the growth stage of their wheat before making spring herbicide applications. Some herbicides must be applied after tillering, several must be applied before jointing, and others can be applied through boot stage.
Applications of pre-emergence herbicides at or before corn planting are important to minimize yield losses to early-emerging weeds. Learn more about this weed management practice in this article.
Many fields across Kansas and neighboring states were covered by flood waters during portions of 2019. These fields may need special considerations when it comes to weed management.
Pre-emergence, soil-active herbicides applied around the time of planting are an important part of a good weed management program. However, variability in spring weather leads to concerns about both weed control and crop injury.
Drought and late freezes have impacted wheat stands in many areas across Kansas this year. As a results, weeds are showing up and taking advantage of thin wheat stands. What are the best options for weed control at this point in the season?
A field study was recently conducted that evaluated the performance of various herbicide programs for Palmer amaranth control in post-harvest wheat stubble. Learn more about the results of this research in this article from Weed Scientist, Dr. Vipan Kumar.
Post-harvest weed control in wheat stubble is very important to conserve soil moisture and prevent weeds from going to seed and adding to the weed seedbank. Weeds are likely to be growing quickly, especially where there are thin stands.
Controlling weeds is key in order to maximize the benefits of stubble and no-till dryland cropping systems in western Kansas. Read more about the effects of weed control timing after wheat harvest in this article.
With adequate moisture and high temperatures, Palmer amaranth populations are rapidly growing and causing concern for some sorghum producers in western Kansas. What options to growers have at this point in the growing season? Read more in the article from weed scientist Dr. Vipan Kumar.
With row crop harvest well underway, it is time to start planning fall herbicide applications. Herbicide applications in late October through November can improve control of difficult winter annual weeds.
Be mindful of the many ways that weeds can spread from field to field, including hitching a ride on harvest equipment. Learn what steps can be taken to minimize spreading weed seeds during harvest activities.
There is still time to participate in a short survey concerning your soybean planting intentions for the 2021 season. This survey will help guide winter extension programming and is completely anonymous.
As of late December, grain sorghum farmers have access to IMIFLEX™ herbicide to use in igrowth® grain sorghum for the 2021 growing season. Read more about the target weeds, use rates, and rotation intervals in this article.
Weed Science Extension specialists have teamed up to launch a new podcast about the ongoing fight to control weeds. The first episode of "War Against Weeds" is available online with more episodes to follow. Check it out!
Now is the time to finalize plans for kochia control. Recent research suggests that kochia can begin emerging in early February with most kochia emerging by early April. This article will be the first in a series discussing specific options for various cropping systems.
Last week, we shared some general information about applying pre-emergence herbicides for kochia control. In this article, the focus is on specific recommendations for fields going to corn or grain sorghum this growing season.
This is the third and final article in a series discussing pre-emergence herbicides for kochia control. For this article, we cover recommendations specific to fields that will be planted to soybean or sunflower this spring and wheat in the fall.
Controlling marestail in soybeans continues to be a big challenge for Kansas no-till producers. Learn about early spring, pre-plant, and post-emergence options for treatment in this article from Extension Weed Science Specialist, Dr. Sarah Lancaster.
Residual herbicides that kill weed seeds/seedlings as they germinate or emerge are an important component of herbicide applications at or before the time of corn planting. Learn about the different options in this article from Weeds Specialist Sarah Lancaster.
With few post-emergence herbicide options for control of grass species and Palmer amaranthl in grain sorghum, having an effective pre-emergence herbicide program is very important. Learn more about the different soil-applied residual herbicides in this article.
If you did not get a chance to participate in a short survey about your herbicide application practices back in February, you have another chance! Help out the Extension Weed Science Team and fill out this short survey! Thank you!
Early season weed control is particularly important in cotton as it can be slow to develop a crop canopy. Learn the best strategies for keeping weeds at bay in your cotton fields this spring and summer.
Herbicide applications that will not directly influence crop yield can be a tough choice to make. There are some indirect benefits to pre-harvest herbicide applications in wheat, especially in fields with a high weed density. Learn more about this management practice in this article.
Post-harvest weed control in wheat stubble is very important to conserve soil moisture and prevent weeds from going to seed and adding to the weed seedbank. Weeds can grow quickly once the wheat canopy is removed.
As September begins, some producers are thinking about seeding winter cover crops in fields currently planted to corn. The successful establishment of winter cover crops is influenced by several factors. This article provides some additional details about cover crop responses to various herbicides.
A collaborative research project is underway with weed scientists from Kansas State, University of Nebraska, and University of Wisconsin. As part of this effort, they have created a survey for growers, consultants, and extension personnel.
Marestail or "horseweed" is a challenging weed to manage in no-till or minimum till systems. Fall-emerged marestail can be difficult to control if allowed to grow until planting in the following spring. Different control options are available for use in the fall while plants are still small.
A collaborative research project is underway with weed scientists from Kansas State, University of Nebraska, and University of Wisconsin. As part of this effort, they have created a survey for growers, consultants, and extension personnel. Learn how to participate in this effort in this article.
Musk thistle (is one of 12 noxious weeds in Kansas infesting nearly 500,000 acres. Control efforts should be aimed at reducing or eliminating new populations and established stands should be managed with any accepted control method. Fall is an excellent time to spray musk thistle.
Too often producers do not notice mustard weeds in their wheat fields until the mustards start to bloom in the spring. To minimize yield losses, mustards should be controlled by late winter or very early spring, before the stems begin to elongate, or bolt.
Harvest is always a great time to start planning weed management strategies for the next spring. Forming a plan now to address needs for next spring is especially important this fall due to the anticipated shortages of key herbicides. Learn what you can do to minimize the impact of a possible chemical shortage.