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2020 Director's Report Of Research In Kansas, J. E. Minton
2020 Director's Report Of Research In Kansas, J. E. Minton
Kansas Agricultural Experiment Station Research Reports
The Director’s Report of Research in Kansas includes a list of journal articles, station publications, and other published manuscripts from scientists in our departments, research-extension centers, and associated programs.
Assessment Of Soy-Based Imports Into The Us And Associated Foreign Animal Disease Status, Allison K. Blomme, Cassandra K. Jones, Jordan T. Gebhardt, Jason C. Woodworth, Chad B. Paulk
Assessment Of Soy-Based Imports Into The Us And Associated Foreign Animal Disease Status, Allison K. Blomme, Cassandra K. Jones, Jordan T. Gebhardt, Jason C. Woodworth, Chad B. Paulk
Kansas Agricultural Experiment Station Research Reports
Soy-based products are known to pose a viable risk to US swine herds because of their ability to harbor and transmit virus. This study evaluated soy imports into the US as a whole and from foreign animal disease positive (FAD+) countries to determine which products are being imported in the highest quantities and observe potential trends in imports from FAD+ countries. Import data were accessed through the United States International Trade Commission website (USITC DataWeb) and summarized using R (version 4.0.2, R core team, Vienna, Austria). Twenty-one different Harmonized Tariff Schedule (HTS) codes were queried to determine quantities (US tons, …
Director's Report Of Research In Kansas, 2018 And 2019, J. E. Minton
Director's Report Of Research In Kansas, 2018 And 2019, J. E. Minton
Kansas Agricultural Experiment Station Research Reports
The Director’s Report of Research in Kansas includes a list of journal articles, station publications, and other published manuscripts from scientists in our departments, research-extension centers, and associated programs.
Director's Report Of Research In Kansas 2017, J. E. Minton
Director's Report Of Research In Kansas 2017, J. E. Minton
Kansas Agricultural Experiment Station Research Reports
The 2017 Director’s Report of Research in Kansas includes a list of journal articles, station publications, and other published manuscripts from scientists in our departments, research-extension centers, and associated programs.
Director's Report Of Research In Kansas, 2016, J. E. Minton
Director's Report Of Research In Kansas, 2016, J. E. Minton
Kansas Agricultural Experiment Station Research Reports
The 2016 Director’s Report of Research in Kansas includes a list of journal articles, station publications, and other published manuscripts from scientists in our departments, research-extension centers, and associated programs.
Assessing Training Methods To Educate Dairy Workers, L. Mendonca, B. E. Voelz, A. Scanavez
Assessing Training Methods To Educate Dairy Workers, L. Mendonca, B. E. Voelz, A. Scanavez
Kansas Agricultural Experiment Station Research Reports
Training employees is fundamental for dairy producers to achieve efficiency in order to increase profitability. Training videos offered online are becoming more common and recommended to train employees. The goals of this survey were to evaluate the comfort level of dairy employees in using computers and tablets, and preferred training delivery methods. A total of 71 employees from 6 dairies were interviewed. Interviews were conducted in the preferred language of the interviewee – English or Spanish. Of the respondents, 52 and 65.6% of employees consider computers and tablets easy to use, respectively. More than half of the employees reported that …
Effects Of Intensive Late-Season Sheep Grazing Following Early-Season Steer Grazing On Population Dynamics Of Sericea Lespedeza In The Kansas Flint Hills, J. Lemmon, W. H. Fick, J. A. Alexander, G. W. Preedy, C. A. Gurule, K C. Olson
Effects Of Intensive Late-Season Sheep Grazing Following Early-Season Steer Grazing On Population Dynamics Of Sericea Lespedeza In The Kansas Flint Hills, J. Lemmon, W. H. Fick, J. A. Alexander, G. W. Preedy, C. A. Gurule, K C. Olson
Kansas Agricultural Experiment Station Research Reports
Sericea lespedeza (Lespedeza cuneata; SL) is a high-tannin, invasive forb in the Tallgrass Prairie ecosystem. In Kansas, sericea lespedeza infests 980 square miles of pasture, primarily in the Flint Hills region. Sericea lespedeza infestations reduce native grass production by up to 92% through a combination of aggressive growth, prolific reproduction, canopy dominance, and chemical inhibition (allelopathy). Herbicides retard the spread of sericea lespedeza, but application is laborious and expensive; moreover, herbicides are lethal to ecologically-important, non-target plant species.
Increased grazing pressure on sericea lespedeza by domestic herbivores may slow its spread and facilitate some measure of biological control. …
Director's Report Of Research In Kansas, 2015, J. E. Minton
Director's Report Of Research In Kansas, 2015, J. E. Minton
Kansas Agricultural Experiment Station Research Reports
The 2015 Director’s Report of Research in Kansas includes a list of journal articles, station publications, and other published manuscripts from scientists in our departments, research stations, and associated programs.
Effects Of Growth-Promoting Technologies On Feedlot Performance And Carcass Characteristics Of Crossbred Heifers, S. M. Ebarb, K. J. Phelps, J. E. Axman, C. L. Van Bibber, J. S. Drouillard, J. M. Gonzalez
Effects Of Growth-Promoting Technologies On Feedlot Performance And Carcass Characteristics Of Crossbred Heifers, S. M. Ebarb, K. J. Phelps, J. E. Axman, C. L. Van Bibber, J. S. Drouillard, J. M. Gonzalez
Kansas Agricultural Experiment Station Research Reports
The use of growth-promoting technologies has become a common practice in the beef cattle industry as producers strive for efficient growth and greater lean deposition. Two common technologies include exogenous hormonal implants and beta-adrenergic agonists (β-AA). Combination implants containing estrogen and testosterone increase muscle mass by elevating protein synthesis and/or reducing protein degradation. The increase in protein synthesis allows the animal to produce more lean muscle tissue. Optaflexx (Elanco Animal Health, Greenfield, IN) is a popular β-AA that works as a repartitioning agent to redirect nutrients toward muscle deposition and away from adipose tissue production. The two technologies utilize separate …
Evaluation Of The Productivity Of A Single Subcutaneous Injection Of Longrange In Stocker Calves Compared With A Positive (Dectomax) And A Negative (Saline) Control, A. C. Vesco, A. K. Sexten, C. S. Weibert, B. E. Oleen, W. R. Hollenbeck, L C. Grimes, Dale Blasi
Evaluation Of The Productivity Of A Single Subcutaneous Injection Of Longrange In Stocker Calves Compared With A Positive (Dectomax) And A Negative (Saline) Control, A. C. Vesco, A. K. Sexten, C. S. Weibert, B. E. Oleen, W. R. Hollenbeck, L C. Grimes, Dale Blasi
Kansas Agricultural Experiment Station Research Reports
Subclinical parasitism is commonly observed in stocker cattle. Treatment of internal parasites helps to improve weight gains, feed conversion, and immune status and decreases morbidity and mortality of beef cattle (Hawkins, 1993). Some of the most concerning classes of internal parasites includeCooperia,Haemonchus, andOstertagia. Commonly used anthelmintics come in the form of pour-ons, oral drenches, and subcutaneous injections. A majority of these drugs are designed to be administered in a single dose and provide defense against stomach worms for approximately 14 to 42 days, but the typical grazing season lasts for approximately 120 days. For …
Genetic Improvement Made Through Dna Testing And Artificial Insemination To High- Growth, High Carcass Value Angus Sires, L C. Grimes, L. R. Corah, T. Brink, M. R. Gardiner, A. K. Sexten
Genetic Improvement Made Through Dna Testing And Artificial Insemination To High- Growth, High Carcass Value Angus Sires, L C. Grimes, L. R. Corah, T. Brink, M. R. Gardiner, A. K. Sexten
Kansas Agricultural Experiment Station Research Reports
The beef industry has improved the recording of pedigrees and performance data through the use of breed associations and herd health databases. Constant evaluation of genetics and performance has allowed producers to make more informed breeding decisions that help improve herd productivity. As a result of recent droughts and elevated feed and grain prices, however, the American beef cowherd is at a record-low 29 million head. For the United States to continue to be the leading producer of beef in the world, the industry must adopt technologies that improve efficiency of the cowherd and the quality of beef being produced. …
Genetic Variance And Covariance Components For Feed Intake, Average Daily Gain, And Postweaning Gain In Growing Beef Cattle, K. J. Retallick, J. M. Bormann, R. L. Weaber, M. D. Macneil, H. L. Bradford, Harvey C. Freetly, W. M. Snelling, Mark Thallman, D. Moser, Larry Kuehn
Genetic Variance And Covariance Components For Feed Intake, Average Daily Gain, And Postweaning Gain In Growing Beef Cattle, K. J. Retallick, J. M. Bormann, R. L. Weaber, M. D. Macneil, H. L. Bradford, Harvey C. Freetly, W. M. Snelling, Mark Thallman, D. Moser, Larry Kuehn
Kansas Agricultural Experiment Station Research Reports
Feed is the greatest cost for a beef cattle production enterprise. Data collection to determine feed efficiency of animals is also costly, because both gain and intake records are needed to calculate feed efficiency. Electronic intake monitoring systems such as GrowSafe or Insentec to collect feed intake data are expensive and thus limit the number of animals that can be tested. Scientists have worked to pinpoint optimal test durations for collecting both weight gain and feed intake records to lessen costs.
A 70-day performance test is currently recommended for accurate calculation of efficiency, with growth data as the limiting factor. …
Using Estrus-Detection Patches To Vary Time Of Insemination Improves Pregnancy Rates Compared With One Single Timed Insemination, S. L. Hill, D. M. Grieger, K C. Olson, J. R. Jaeger, J. S. Stevenson
Using Estrus-Detection Patches To Vary Time Of Insemination Improves Pregnancy Rates Compared With One Single Timed Insemination, S. L. Hill, D. M. Grieger, K C. Olson, J. R. Jaeger, J. S. Stevenson
Kansas Agricultural Experiment Station Research Reports
Timed artificial insemination (TAI) of beef cows at a predetermined time is a management tool that reduces labor costs associated with conventional heat detection before insemination. Multiple research trials have examined timing of the individual components of the developed protocols associated with TAI. The 7-day CO-Synch + progesterone insert (controlled internal drug release; CIDR) protocol has been shown to initiate ovulation effectively in cycling and noncycling suckled beef cows, often producing pregnancy rates greater than 50% in beef cows. In the current research, we examined using two targeted insemination intervals depending on the occurrence of estrus. We hypothesized that by …
Hops Βeta-Acid Extract Yields Feedlot Performance Similar To Rumensin, J. E. Axman, C. L. Van Bibber, C. Alvarado, J. Thieszen, J. S. Drouillard
Hops Βeta-Acid Extract Yields Feedlot Performance Similar To Rumensin, J. E. Axman, C. L. Van Bibber, C. Alvarado, J. Thieszen, J. S. Drouillard
Kansas Agricultural Experiment Station Research Reports
Hops (Humulus lupulus) have played an integral role in beer manufacturing and are widely known for their antimicrobial and preservative properties. α-acids of hops are extracted and utilized to enhance beer flavor, leaving residues largely composed of β-acids. Beta-acid extracts of hops are structurally similar to ionophores and may express ionophore-like traits. Ionophores, including Rumensin (Elanco Animal Health, Greenfield, IN), are used to improve feed efficiency and to decrease the incidence of digestive disturbances in feedlot cattle. A large portion ofin vitrostudies show benefits from feeding hops or hop acids with results similar to ionophores; however, …
Lactipro (Megasphaera Elsdenii) Increases Ruminal Ph And Alters Volatile Fatty Acids And Lactate During Transition To An 80% Concentrate Diet, J. Thieszen, C. L. Van Bibber, J. E. Axman, J. S. Drouillard
Lactipro (Megasphaera Elsdenii) Increases Ruminal Ph And Alters Volatile Fatty Acids And Lactate During Transition To An 80% Concentrate Diet, J. Thieszen, C. L. Van Bibber, J. E. Axman, J. S. Drouillard
Kansas Agricultural Experiment Station Research Reports
Direct-fed microbials commonly have been used to enhance performance or to decrease shedding of foodborne pathogens in beef cattle.Megasphaera elsdeniiis a recently introduced probiotic bacteria marketed under the trade name Lactipro (MS-Biotec Inc., Wamego, KS) and is a key lactate-fermenting bacterium in the rumens of cattle fed high-concentrate diets.Megasphaera elsdeniiis responsible for metabolizing up to 95% lactic acid within the rumen, and thus is an important species for controlling occurrence of ruminal acidosis. The objective of this study was to evaluate changes in ruminal pH and volatile fatty acid concentration during the transition from a diet …
Menthol Supplementation Has Minimal Effects On Blood Components From Holstein Steers, C. L. Van Bibber, K. A. Miller, C. C. Aperce, C. Alvarado, J. J. Higgins, J. S. Drouillard
Menthol Supplementation Has Minimal Effects On Blood Components From Holstein Steers, C. L. Van Bibber, K. A. Miller, C. C. Aperce, C. Alvarado, J. J. Higgins, J. S. Drouillard
Kansas Agricultural Experiment Station Research Reports
Menthol is a naturally occurring compound classified as an essential oil that gives plants of theMenthaspecies their characteristic minty aroma and flavor. Menthol is used as a cooling compound in products ranging from common cold medications to pesticides and has been found to have a wide range of biological activities in different systems within the body. More recently, menthol and other essential oils have been identified as potential alternatives to feed antibiotics and growth promotants. Menthol has been observed to directly affect κ-opioid receptors. Kappa opioid receptors are located in the central nervous system, with a high density …
Comparing Standing Heat And Estrotect Heat Detection Patches, S. K. Johnson, J. R. Jaeger
Comparing Standing Heat And Estrotect Heat Detection Patches, S. K. Johnson, J. R. Jaeger
Kansas Agricultural Experiment Station Research Reports
A recent survey showed that 66% of producers surveyed used some amount of heat detection in their artificial insemination program, and 74% of producers that used heat detection aids had tried Estrotect (Rockway, Inc.; Spring Valley, WS) heat detection patches. The peel-and-stick application made Estrotect more popular than types that required adhesive application. The patches are designed so that when the animal is mounted the top surface layer is removed, much like scratching a lottery ticket. After several mounts the entire layer is removed, leaving a bright-colored surface behind. A new type of patch, Standing Heat (Standing Heat, LLC; Dannebrog, …
East Central Kansas Experiment Field Introduction, E. A. Adee
East Central Kansas Experiment Field Introduction, E. A. Adee
Kansas Agricultural Experiment Station Research Reports
The research program at the East Central Kansas Experiment Field is designed to keep area crop producers abreast of technological advances in agronomic agriculture. Specific objectives are to (1) identify top-performing varieties and hybrids of wheat, corn, soybean, and grain sorghum; (2) establish the amount of tillage and crop residue cover needed for optimum crop production; (3) evaluate weed and disease control practices using chemical, no chemical, and combination methods; and (4) test fertilizer rates, timing, and application methods for agronomic proficiency and environmental stewardship.
Effects Of Seed Treatment On Sudden Death Syndrome Symptoms And Soybean Yield, E. A. Adee
Effects Of Seed Treatment On Sudden Death Syndrome Symptoms And Soybean Yield, E. A. Adee
Kansas Agricultural Experiment Station Research Reports
Sudden death syndrome (SDS) is a soybean disease that perennially limits yields in the Kansas River Valley. The presence of soybean cyst nematode (SCN) and saturated soils have been implicated in contributing to the severity of the disease. Selecting varieties with some degree of tolerance to SDS is the only cultural practice that can potentially reduce the severity of SDS and improve yields. Variety selection alone, however, cannot improve the production of soybeans to make them profitable. The challenge of trying to manage irrigation scheduling to avoid saturated soils further complicates efforts to increase productivity with irrigation while still avoiding …
Effects Of An Experimental Seed Treatment From Dupont On Sudden Death Syndrome Symptoms And Soybean Yield, E. A. Adee
Effects Of An Experimental Seed Treatment From Dupont On Sudden Death Syndrome Symptoms And Soybean Yield, E. A. Adee
Kansas Agricultural Experiment Station Research Reports
Sudden death syndrome (SDS) is a soybean disease that perennially limits yields in the Kansas River Valley. Soybean cyst nematode (SCN) and saturated soils contribute to the severity of the disease. Selecting varieties with some degree of tolerance to SDS is the only cultural practice that can reduce the severity of SDS and improve yields. Variety selection alone, however, doesn’t necessarily make soybean production profitable; an added complication is managing irrigation scheduling to avoid saturated soils. A study with seed treatments applied to soybean was conducted at the Kansas River Valley Experiment Field in 2014, with treatments applied to two …
Forage Sorghum Performance Trial, J. L. Moyer, E. A. Adee
Forage Sorghum Performance Trial, J. L. Moyer, E. A. Adee
Kansas Agricultural Experiment Station Research Reports
In our sorghum trials, production of forage was greater (P<0.05) for ‘FS 4’ and ‘AF 7401’ than for ‘AF 7202,’ possibly related to differences in maturity. Estimated grain production was greater for ‘AF 7401’ than for all others, except for ‘AF 7102.’
Late-Season Nitrogen Fertilizer Application In Soybean, D. R. Hodgins, E. A. Adee, I. A. Ciampitti
Late-Season Nitrogen Fertilizer Application In Soybean, D. R. Hodgins, E. A. Adee, I. A. Ciampitti
Kansas Agricultural Experiment Station Research Reports
Field experiments were conducted at the Kansas River Valley Experiment Field, located near Rossville and Topeka, KS, in the summer of 2014 to evaluate effects of late-season nitrogen (N) fertilizer application on modern soybean genotypes. A unique fertilizer N source (urea) was applied at five N rates (0, 40, 80, 120, and 160 lb N/a) to soybean at the R3 growth stage. The main objective was to determine if late-season N application has an agronomical benefit to soybean producers. Overall soybean yields ranged from 43.7 to 57.5 bu/a considering both experimental fields. At Rossville, sudden death syndrome (SDS) affected the …
Seeding Date Effects On Camelina Seed Yield And Quality Traits, E. Obeng, A. Obour
Seeding Date Effects On Camelina Seed Yield And Quality Traits, E. Obeng, A. Obour
Kansas Agricultural Experiment Station Research Reports
Identifying crops that are adapted to dryland environments of the central and northern Great Plains (GP) has been a major challenge. An alternative crop with potential for dryland crop production in the GP is camelina (Camelina sativaL. Crantz). Time of planting is an important management consideration that can affect camelina production. Early planting allows camelina to mature before the onset of hot summer temperatures in the central GP that can affect seed yield. A study was carried out in the spring of 2013 and 2014 to evaluate planting date effects on spring camelina varieties grown under dryland conditions …
Influence Of Different Seeding Dates On Fenugreek (Trigonella Foenum-Graecum L.) Forage Yield And Nutritive Value, A. Obour, E. Obeng, J. D. Holman
Influence Of Different Seeding Dates On Fenugreek (Trigonella Foenum-Graecum L.) Forage Yield And Nutritive Value, A. Obour, E. Obeng, J. D. Holman
Kansas Agricultural Experiment Station Research Reports
Fenugreek (Trigonella foenum-graecum L.) is used as medicinal plant in many Asian countries and has been reported to have forage quality similar to alfalfa. Fenugreek is an annual crop and may have the potential to diversify forage production systems in the central High Plains. This study evaluated forage dry matter (DM) production and the nutritive value of three fenugreek cultivars as influenced by planting date at Hays and Garden City, KS, in 2014. Results at Hays showed forage DM yield of fenugreek cultivars was not affected by planting date, but fenugreek cultivars differed significantly (P<0.05) in forage DM yield. Averaged across planting date, forage DM production was 760 lb/a for ‘Amber,’ 910 lb/a for ‘F96,’ and 672 lb/a for ‘Tristar.’ Forage crude protein (CP), acid detergent fiber (ADF), neutral detergent fiber (NDF), total digestible nutrient (TDN) concentrations, and relative feed value (RFV) did not differ (P>0.05) …0.05)>
Breaking Corn Yield Barriers: A Cropping Systems Approach, G. R. Balboa, I. A. Ciampitti
Breaking Corn Yield Barriers: A Cropping Systems Approach, G. R. Balboa, I. A. Ciampitti
Kansas Agricultural Experiment Station Research Reports
A corn research trial was conducted at Scandia, KS, during the 2014 growing season. The objective was to study the contribution of different farming systems in developing efficient and high-yielding corn production systems. The experiment had five treatments: farmer practices, comprehensive fertilization, production intensity, ecological intensification, and advanced plus. Farmer practice was the lowest-yielding treatment, and ecological intensification and advanced plus treatment presented similar yields.
Balanced Nutrition And Crop Production Practices For Closing Grain Sorghum Yield Gaps, B. Mchenry, E. A. Adee, P. V. Vara Prasad, I. A. Ciampitti
Balanced Nutrition And Crop Production Practices For Closing Grain Sorghum Yield Gaps, B. Mchenry, E. A. Adee, P. V. Vara Prasad, I. A. Ciampitti
Kansas Agricultural Experiment Station Research Reports
A field experiment was conducted at the East Central Kansas Experiment Field near Ottawa, KS, and at the Kansas River Valley Experiment Field near Rossville, KS, in the summer of 2014 to evaluate diverse cropping systems approaches on closing sorghum yield gaps. Yield gaps can be understood as the difference between maximum yield and attainable on-farm yields. The factors that were tested include narrow row spacing; plant population; balanced nutrition practices, including various timings of nitrogen, phosphorus, and potassium (NPK) and micronutrient applications; crop protection with fungicide and insecticide applications; plant growth regulator effects; and the use of precision ag …
Breaking Soybean Yield Barriers: A Cropping Systems Approach, G. R. Balboa, I. A. Ciampitti
Breaking Soybean Yield Barriers: A Cropping Systems Approach, G. R. Balboa, I. A. Ciampitti
Kansas Agricultural Experiment Station Research Reports
Two soybean research trials were conducted at Scandia, KS, in dryland and irrigated environments. The objective of this trial was to study the contribution of different farming systems to developing efficient and high-yielding soybean production systems. Each experiment had five treatments: farmer practices (FP), comprehensive fertilization (CF), production intensity (PI), ecological intensification (CF + PI), and advanced plus (AD). Under dryland, FP and CF treatments yielded 34 bu/a, differing in 27 bu/a compared with PI, EI, and AD scenarios. Under irrigation, FP and CF presented comparable yield levels, differing by close to 36 bu/a compared with crop intensification treatments (CF …
Corn Yield Response To Water Availability, T. Newell, K. Roozeboom, G. J. Kluitenberg, I. A. Ciampitti
Corn Yield Response To Water Availability, T. Newell, K. Roozeboom, G. J. Kluitenberg, I. A. Ciampitti
Kansas Agricultural Experiment Station Research Reports
Drought-tolerant technologies have become popular in hybrids for low-yielding corn environments across central and western Kansas and are marketed for their ability to produce higher grain yields with less water. The objective of this study was to compare water use, yield, and water use efficiency (WUE) of two types of drought-tolerant (DT) corn hybrids and a high-yielding non-DT hybrid. Water use and yield of two DT and one non-DT, high-yielding hybrid were compared in both dryland and irrigated situations. The average yield for the irrigated corn was 217 bu/a, and the average was 127 bu/a in dryland, representing a yield …
Cover Crop Impacts On Soil Water Status, M. Kuykendall, K. Roozeboom, G. J. Kluitenberg, P. V. Vara Prasad
Cover Crop Impacts On Soil Water Status, M. Kuykendall, K. Roozeboom, G. J. Kluitenberg, P. V. Vara Prasad
Kansas Agricultural Experiment Station Research Reports
Water is a primary concern for producers in the Great Plains; as such, research is warranted to quantify how much cover crops affect the amount of soil water available to subsequent cash crops. Cover crop mixes have been marketed as a means to conserve water in no-till cropping systems following winter wheat (Triticum aestivumL.) harvest. The objectives of this study are to quantify changes in soil profile water content in the presence of different cover crops and mixtures of increasing species complexity, to quantify their biomass productivity and quality, and to quantify the impact of cover crops on …
Tillage And Nitrogen Placement Effects On Yields In A Short-Season Corn/Wheat/Double-Crop Soybean Rotation, D. W. Sweeney
Tillage And Nitrogen Placement Effects On Yields In A Short-Season Corn/Wheat/Double-Crop Soybean Rotation, D. W. Sweeney
Kansas Agricultural Experiment Station Research Reports
In 2013, late planting resulted in corn yields that were less than 100 bu/a. Nitrogen (N) placement did not affect yields in the higher-yielding conventional tillage system, but knifing tended to result in greater yield in reduced and no-till systems.