Summary. Woollyleaf bursage, [Ambrosia grayi (A. Nels.) Shinners], also known as bur ragweed, is a perennial noxious weed native to Kansas. It is a member of the Composite family and was referred to previously as Franceria tomentosa in the false ragweed family. Taxonomists were not able to distinguish between Ambrosia grayi and Franceria tomentosa and thus the accepted current Latin name is A…
Summary. The musk thistle or nodding thistle (Carduus nutans L.) is usually a biennial or winter annual, but it occasionally occurs as a summer annual. As a biennial or winter annual, it produces a rosette the first year and develops flowers and seeds the second year. As a summer annual, this thistle completes its life cycle from germination through seed production in the same growing season. …
Summary. Herbicides are chemicals that inhibit or interrupt normal plant growth and development. They are widely used in agriculture, industry, and urban areas for weed management. Herbicides can provide cost-effective weed control while minimizing labor. However, improper herbicide use may result in crop injury, poor weed control, herbicide resistant weeds, environmental contamination, or hea…
Summary. Sprayers are important equipment for pesticide and nutrient applications. Proper maintenance and use of sprayers is essential for efficient, trouble-free operation. Sprayer cleaning is a critical component of maintenance that will prolong the life of the sprayer, prevent unnecessary repairs and downtime, reduce potential for contamination of surface and groundwater, and eliminate crop…
Plants have adapted to thrive in diverse habitats. They are most obvious in the terrestrial environment, but they also can inhabit many types of aquatic environments. Aquatic plants are more numerous in the warm, swampy areas of the southern United States, but numerous examples can be found in Kansas. Aquatic plants are a natural part of the aquatic ecosystem, used by many different animals eit…
Numerous demands are placed on the state’s aquatic resources. Water is used in various ways. Each use requires a certain quality and condition. Sometimes a particular water use alters quality and condition, so other uses are impaired. Often, water contains a problem organism that must be eliminated or controlled to make it suitable for a particular use. The desired control method must be eff…