1. K-State home
  2. »Research and Extension
  3. »WKARC

Western Kansas Agricultural Research Centers




The Western Kansas Agricultural Research Centers (WKARC), one of several administrative units accountable to the KAES director, is composed of four sub-units including the Agricultural Research Center - Hays (ARCH), the Southwest Research-Extension Center - Garden City (SWREC) and Southwest Research-Extension Center - Tribune (SWREC-T), and the Northwest Research-Extension Center - Colby (NWREC). 

News and Information


American Society of Agricultural and Biological Engineers Names Freddie Lamm as Fellows of the Society

Date: Friday, August 07, 2015

Freddie LammThe American Society of Agricultural and Biological Engineers (ASABE) has named twelve individuals as ASABE Fellows. They were inducted at a ceremony on July 27 at the 2015 ASABE Annual International Meeting, held in New Orleans.  One of the twelve named to the class of 2015 ASABE Fellows were:

FREDDIE RAY LAMM, P.E., professor and research irrigation engineer, Kansas State University, Northwest Research-Extension Center, Colby, Kansas, for his extensive record of influential and creative research, education, and service to the community of irrigation engineers and scientists.

To be considered for the grade of ASABE Fellow, an individual must demonstrate unusual professional distinction, with outstanding qualifications and experience in the field of agricultural engineering. Twenty years' membership in ASABE is also required. Only about two percent of the active members of ASABE have achieved the grade of Fellow.

The American Society of Agricultural and Biological Engineers is an international scientific and educational organization dedicated to the advancement of engineering applicable to agricultural, food, and biological systems. Its members, from more than 100 countries, are consultants, managers, researchers, and others who have the training and experience to understand the interrelationships between technology and living systems. Further information on the Society can be obtained by contacting ASABE at www.asabe.org.



Biological Control of Insect Pests
Agricultural Research Center–Hays


Biological Control of Insect PestsKansas grew more than 199 million bushels of sorghum for grain in 2014, enough to make it the highest-producing sorghum state in the nation. The invasive sugarcane aphid, Melanaphis sacchari, swept across much of the southern Great Plains in 2013 and caused serious yield losses in grain sorghum. Researchers at the Kansas State University Agricultural Research Center–Hays are working to decode nature and build and protect global food systems by identifying the natural enemies of sugarcane aphid and their roles in suppressing populations of this pest. Entomologists are assessing biological pre-adaptations of key native natural enemy species and determining the toxicity to beneficial species of novel insecticides relied upon to control sugarcane aphid. They are also evaluating possible sources of sorghum plants’ resistance to the aphids that can assist biological control and provide cross-resistance to greenbug, another economically important sorghum pest.


Biological Control of Insect PestsWorld demand for sorghum is rising. In fighting sugarcane aphids, K-State researchers are both protecting the economic interests of Kansas farmers and building and protecting global food systems as we work to feed a world population projected to reach more than 9 billion people in 2050. Biological control working in concert with host plant resistance traits in crops is the most permanent, cost-effective and environmentally friendly of all pest control solutions. This approach is known as Integrated Pest Management, or IPM. IPM aims to combine cultural, chemical and biological control tactics to protect crops and save producers money. Adopting IPM requires exploring how to accelerate the evolution of natural biological controls in managed agroecosystems such as sorghum monocultures, how to conserve beneficial species, and how to minimize the impacts of pesticide applications on nontarget species. This approach helps prevent serious economic losses and protects the environment.

About Kansas State University

Kansas State University was established in 1863 as the nation’s first operational land-grant university. We’ve held firmly to the landgrant philosophy of serving our world through discovery and innovation. Today, the university is on its way to becoming a Top 50 public research university by 2025 through supporting, encouraging, and growing our research efforts.


Office of the Vice President for Research



Manage Honey Locust


Dying Locust TreeHoney locust (Gleditisia triacanthos L.) is a deciduous tree that produces large brown seed pods and thorny appendages, and is present throughout most of the US. The pods are highly nutritious for livestock and wildlife, and are easily spread by animals in dung pats. Honey locust is typically found in greatest concentrations in the central US in the same general range as historical tallgrass prairie.  Fire suppression and introduction of honey locust into shelter belts has allowed honey locust to increase into more arid regions associated with mixed grass prairie.  The increase in population has especially occurred along drainages and low lying areas in pasture, but has also spread into upland areas.  Dense stands of honey locust limit grass production, and if damaged or cut, honey locust is capable of producing large quantities of new sprouts from buds around the base of the trunk and along the lengths of the root system.  Because of the propensity to produce sprouts, mechanical control measures also require herbicides to effectively result in tree death.  Several herbicides have been labeled for honey locust control through various application techniques, including basal bark, thin line basal bark, cut stump, frill or girdle, and foliar applications. 

We recently performed a test of different techniques and herbicides to control honey locust on grazed pasture.   We targeted trees 3-8” in diameter, and each year for two years we treated trees with one of five combinations of herbicides and application methods.  Treatment combinations included 1) triclopyr 25% + diesel 75% and 2) aminopyralid 5% + bark oil 95%, both applied to the lower 15” of basal bark including the root collar area before reaching the point of runoff, as well as 3) triclopyr 25% + diesel 75%, 4) aminopyralid 10% + water 90%, and 5) dicamba 33% + 2,4-D 2% + water 65%, all applied to wet the outer cambium layer of cut stump surfaces before reaching the point of runoff.  Additionally, the triclopyr + diesel cut stump treatment wetted the entire remaining trunk and root collar area before reaching the point of runoff, as per label instructions.  Basal bark treatments were applied to standing live trees, while cut stump treatments were applied immediately to the surfaces of freshly cut stumps. Trees treated with basal bark application were evaluated for signs of green leaves the following year, and trees treated with basal bark application and trees treated with cut stump application were evaluated the following year for the presence of new sprouts within 6 feet of the tree. 

One year after treatment, aminopyralid applied as a basal bark or as a cut stump treatment had the best control and averaged over 97% dead trees with no green leaves or new sprouts.  The dicamba + 2,4-D cut stump treatment also had near 85% control.  The triclopyr + diesel applied on the basal bark controlled nearly 80% of the trees.  The triclopyr + diesel cut stump treatment had fewer dead trees (just over 50%) than any other treatment and produced the most new sprouts.  If cutting down honey locust trees on grazed pasture, treating cut tree surfaces with aminopyralid mixed with water is an excellent option, while treating live standing trees with a basal bark application of aminopyralid and oil is another excellent option.  If using triclopyr and diesel, it is best to use that mixture on live standing trees with a basal bark treatment.  Aminopyralid is a water based herbicide, so oil carriers should have emulsifiers to keep the herbicide in solution for basal bark application, and both should be mixed and tested for compatibility before use. 

For more information, contact Keith Harmoney at the KSU Agricultural Research Center - Hays.  You can also view an online presentation, presented at Roundup, online.



To learn more about activities at the Western Kansas Agricultural Research Centers, please visit our news page and/or visit our twitter or facebook feeds.