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Kansas Agricultural Experiment Station Research Reports

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Relationships Among Terminal Traits And Sale Prices Of Red Angus Bulls Sold At Auction From 2017 Through 2019, M. J. Smith, K. E. Fike, M. E. King, E. D. Mccabe, G. M. Rogers, K. G. Odde Jan 2021

Relationships Among Terminal Traits And Sale Prices Of Red Angus Bulls Sold At Auction From 2017 Through 2019, M. J. Smith, K. E. Fike, M. E. King, E. D. Mccabe, G. M. Rogers, K. G. Odde

Kansas Agricultural Experiment Station Research Reports

Objective: The objective of this study was to evaluate the influence of terminal traits in the form of selection indices and expected progeny differences on the sale price of Red Angus Bulls sold at auction from 2017 through 2019 across the United States.

Study Description: Information describing factors about Red Angus bulls marketed through auctions were obtained from the Red Angus Association of America (Commerce City, CO) in an electronic format. Data were collected for 21,362 Red Angus bulls offered for sale from 2017 through 2019. Multiple regression models were developed using backward selection procedures to examine the effect ...


Differences In Rumination And Animal Activity Can Be Quantified By Utilizing New Technologies, M. A. Scilacci, A. J. Tarpoff, E. C. Titgemeyer, T. G. O'Quinn, T. Jennings, C. I. Vahl, D. U. Thomson, W. R. Hollenbeck, D. A. Blasi Jan 2021

Differences In Rumination And Animal Activity Can Be Quantified By Utilizing New Technologies, M. A. Scilacci, A. J. Tarpoff, E. C. Titgemeyer, T. G. O'Quinn, T. Jennings, C. I. Vahl, D. U. Thomson, W. R. Hollenbeck, D. A. Blasi

Kansas Agricultural Experiment Station Research Reports

Objective: Utilizing new technologies such as Allflex eSense Ear Tags to (Allflex Livestock Intelligence, Madison, WI) evaluate the impacts of limit feeding a high-energy diet in the backgrounding phase on daily rumination and activity in growing cattle.

Study Description: This project was conducted in conjunction with the performance backgrounding study at the Kansas State University Beef Stocker Unit in 2019. Crossbred heifers (n = 418) were outfitted with an ear tag that measured rumination and activity throughout the day and the 84-day backgrounding study. This data was continuously collected via an onsite antenna, downloaded to a computer, and analyzed in a ...


Effects Of Choline On Neutrophil Function And Inflammation In Growing Cattle With Modulated Methyl Group Status, M. S. Grant, H. D. Aufdemberge, B. J. Bradford, L. K. Mamedova, E. C. Titgemeyer Jan 2021

Effects Of Choline On Neutrophil Function And Inflammation In Growing Cattle With Modulated Methyl Group Status, M. S. Grant, H. D. Aufdemberge, B. J. Bradford, L. K. Mamedova, E. C. Titgemeyer

Kansas Agricultural Experiment Station Research Reports

Objective: This study was conducted to evaluate the effects of supplemental choline in combination with guanidinoacetic acid or creatine on immune cell function and inflammation in growing cattle.

Study Description: Six ruminally-cannulated Holstein steers (321 lb) were utilized in an experiment where each steer received each of six treatments. Treatments were given via abomasal infusion of a 0 or 5 g/day of supplemental choline, and either a saline solution (control); 15 g/day guanidinoacetic acid; or 16.8 g/day of creatine, with all treatment combinations represented. Steers were fed a corn-based diet. Blood was collected during each period ...


Investigating The Contribution Of Mature Collagen Crosslinks To Cooked Meat Toughness Using A Stewed Beef Shank Model, W. Wu, A. A. Welter, C. K. Chun, T. G. O'Quinn, G. Magnin-Bissel, M. D. Chao Jan 2021

Investigating The Contribution Of Mature Collagen Crosslinks To Cooked Meat Toughness Using A Stewed Beef Shank Model, W. Wu, A. A. Welter, C. K. Chun, T. G. O'Quinn, G. Magnin-Bissel, M. D. Chao

Kansas Agricultural Experiment Station Research Reports

Objective: The objective of this study was to investigate mature collagen crosslink densities and their relationship to connective tissue texture using a stewed beef shank model.

Study Description: Connective tissue texture, Warner-Bratzler shear force, and collagen content and characteristics were measured for six different beef shank cuts from eight U.S. Department of Agriculture Low Choice beef carcasses (n = 48).

Results: Deep digital flexor from the foreshank had the toughest connective tissue texture, greatest Warner-Bratzler shear force value, most cooked collagen content, one of the greatest insoluble collagen percentages, as well as greatest raw and cooked pyridinoline densities among all ...


Consumer Sensory Evaluation Of Plant-Based Ground Beef Alternatives In Comparison To Ground Beef Of Various Fat Percentages, S. G. Davis, K. M. Harr, S. B. Bigger, D. U. Thomson, M. D. Chao, J. L. Vipham, M. D. Apley, D. A. Blasi, S. M. Ensley, M. D. Haub, M. D. Miesner, A. J. Tarpoff, K C. Olson, T. G. O'Quinn Jan 2021

Consumer Sensory Evaluation Of Plant-Based Ground Beef Alternatives In Comparison To Ground Beef Of Various Fat Percentages, S. G. Davis, K. M. Harr, S. B. Bigger, D. U. Thomson, M. D. Chao, J. L. Vipham, M. D. Apley, D. A. Blasi, S. M. Ensley, M. D. Haub, M. D. Miesner, A. J. Tarpoff, K C. Olson, T. G. O'Quinn

Kansas Agricultural Experiment Station Research Reports

Objective: The objective of this study was to determine if current plant-based protein ground beef alternatives offer similar palatability characteristics to ground beef patties of varying fat percentages.

Study Description: Fifteen different production lots (n = 15/fat level) of 3 lb ground beef chubs of three different fat levels (10%, 20%, and 30%) were collected from retail markets in the Manhattan, KS, area. Additionally, alternative products including a soy and potato protein-based foodservice ground beef alternative, a pea protein-based retail ground beef alternative, and a traditional soy protein-based ground beef alternative, (n = 15 production lots/product) currently available through commercial ...


Comparison Of The Physical Attributes Of Plant-Based Ground Beef Alternatives To Ground Beef, K. M. Harr, S. G. Davis, S. B. Bigger, D. U. Thomson, M. D. Chao, J. L. Vipham, M. D. Apley, S. M. Ensley, M. D. Haub, M. D. Miesner, A. J. Tarpoff, K C. Olson, T. G. O'Quinn Jan 2021

Comparison Of The Physical Attributes Of Plant-Based Ground Beef Alternatives To Ground Beef, K. M. Harr, S. G. Davis, S. B. Bigger, D. U. Thomson, M. D. Chao, J. L. Vipham, M. D. Apley, S. M. Ensley, M. D. Haub, M. D. Miesner, A. J. Tarpoff, K C. Olson, T. G. O'Quinn

Kansas Agricultural Experiment Station Research Reports

Objective: The objective of this study was to evaluate the physical attributes of three different plant-based, ground beef alternatives in comparison to ground beef of three different fat percentages.

Study Description: Ground beef of three different fat percentages, a retail pea protein-based ground beef alternative, and a traditional soy-based ground beef alternative were obtained from retail stores (n = 15 lots/treatment). Samples from 15 lots of a foodservice soy protein-based ground beef alternative were obtained from a foodservice chain. All samples were fabricated into 0.25 lb patties assigned to one of four assays: color analysis, texture profile analysis, shear ...


Evaluation Of Implants, Clover, And Fescue Variety On Stocker Steers, Z. T. Buessing, J. K. Farney Jan 2021

Evaluation Of Implants, Clover, And Fescue Variety On Stocker Steers, Z. T. Buessing, J. K. Farney

Kansas Agricultural Experiment Station Research Reports

Sixty-four growing steers were used in a split-plot experiment, where the whole plot was pasture, and the split-plot was implants. Whole plot treatment was a 4 × 2 facto­rial with four levels of fescue (High Endophyte, Low Endophyte, Novel, or Endophyte Free) and two levels of legume (Legumes or No Legumes). The split-plot included four implant levels (No Implant, Synovex One Grass, Revalor-G, Ralgro). Data collected were weights, hair coat scores, hair length, rectal temperature (every 28 days), and ultrasound carcass characteristics coming off grass. Steers on High Endophyte had the lowest average daily gain (ADG), longest hair, and highest ...


Form Of Supplement And Addition Of Ionophore Effects On Steer Performance While Grazing Bromegrass And Subsequent Effects In Feedlot And Carcass Measures, J. K. Farney, K. Malone Jan 2021

Form Of Supplement And Addition Of Ionophore Effects On Steer Performance While Grazing Bromegrass And Subsequent Effects In Feedlot And Carcass Measures, J. K. Farney, K. Malone

Kansas Agricultural Experiment Station Research Reports

Stocker steers were grazed on bromegrass from April to the end of August and were supplemented with several different forms of products. Treatment structure was a 2 × 2 + 2 factorial (six total treatments). Treatments evaluated included mineral only; free-choice supplementation in the form of liquid feed (MIX30) or block format (Mintrate); hand-fed supplement of corn:dried distillers grains at 0.25% of body weight on a dry matter basis offered three times per week; and ionophore (Rumensin) was included in one block and hand-fed supplement. Steers were weighed every 28 days while on grass and in the feedlot. Steers were ...


Evaluation Of Grazing Options During Summer For Growing Heifers, J. K. Farney Jan 2021

Evaluation Of Grazing Options During Summer For Growing Heifers, J. K. Farney

Kansas Agricultural Experiment Station Research Reports

Developing methods to provide high quality forage through a majority of the year is important for cattle operations. The purpose of this study was to determine forage management options to offset the summer “slump” with fescue. Four grass pasture treatments (10 pastures total; 4 acres) were used in a completely randomized design and stocked with growing heifers (n = 47; initial wt 419 ± 20 lb). Pasture treatments consisted of novel fescue (FES), crabgrass (CRAB), bermudagrass (BERM), and sor­ghum-sudan interseeded into novel fescue (SS-FES). Heifers were weighed and grazed FES/SS-FES pastures April to November (213 d) or CRAB and BERM ...


Evaluation Of Warm Season Annual Forages For Livestock: Biomass And Cost Of Production, J. K. Farney, M. E. Reeb, Z. T. Buessing, K. Malone, G. F. Sassenrath Jan 2021

Evaluation Of Warm Season Annual Forages For Livestock: Biomass And Cost Of Production, J. K. Farney, M. E. Reeb, Z. T. Buessing, K. Malone, G. F. Sassenrath

Kansas Agricultural Experiment Station Research Reports

Seventeen warm season annual forage options were evaluated as livestock feed to be grazed, hayed, ensiled, or left as a cover crop. Treatments were planted in mid-May and terminated in late September with one harvest for silage, two hay cuttings, and three grazing rotations. One additional treatment was unharvested to serve as a cover crop. Biomass production and cost to produce final outputs were determined. Even with restricted rainfall during the summer months in 2020, the growth for the chosen forage options was at least 1,500 lb of dry matter (DM) per acre, with the exception of sun­flowers ...


Nitrogen Fertilizer Timing And Phosphorus And Potassium Fertilization Rates For Established Endophyte-Free Tall Fescue, D. W. Sweeney, J. K. Farney, J. L. Moyer, D. A. Ruiz Diaz Jan 2021

Nitrogen Fertilizer Timing And Phosphorus And Potassium Fertilization Rates For Established Endophyte-Free Tall Fescue, D. W. Sweeney, J. K. Farney, J. L. Moyer, D. A. Ruiz Diaz

Kansas Agricultural Experiment Station Research Reports

Tall fescue production was measured during the third production year of a study with locations started in fall of 2016 and fall of 2017. Phosphorus (P) fertilization rate af­fected spring harvest yield at Site 1, but not at Site 2. Applying nitrogen (N) in late fall or late winter resulted in greater spring yields than applying N in spring or not applying N. However, fall harvest yields at Site 1 were greater with spring N application, but not at Site 2. The third-year tall fescue total yield rank as affected by N fertilizer timing was late winter>late fall ...


Using Cover Crops To Suppress Weeds And Improve Soil Health, J. A. Dille, L. I. Chism, G. F. Sassenrath Jan 2021

Using Cover Crops To Suppress Weeds And Improve Soil Health, J. A. Dille, L. I. Chism, G. F. Sassenrath

Kansas Agricultural Experiment Station Research Reports

Herbicide-resistant weeds are creating challenges for producers to control weeds in crop fields. This study explores the potential of cover crops to reduce weed pressure and im­prove soil health. Cover crops were planted after corn harvest in tilled and no-till fields, and included Graza radish, winter wheat, annual ryegrass, spring oats, winter oats, and forage collards. The control was fallow with herbicide application but no cover crop. Soil health was determined prior to cover crop termination. Graza radish and forage collards did not grow consistently in all plots due to poor germination and winter kill. Significant weed biomass was ...


Laboratory Calibration Of The Spectrum Field Scout Tdr 300, W. Dyer, D. Bremer, P. Rossini, M. Stone, A. Patrignani Jan 2021

Laboratory Calibration Of The Spectrum Field Scout Tdr 300, W. Dyer, D. Bremer, P. Rossini, M. Stone, A. Patrignani

Kansas Agricultural Experiment Station Research Reports

Soil moisture sensors (SMSs) are a useful tool that aid in data-driven water management decisions. However, default factory calibrations can be inaccurate and soil-specific calibrations are often required to obtain higher accuracy in the determination of soil water storage and plant available water. In this study, we conducted a lab calibration for the Field Scout TDR 300, which is a popular SMS used in the turfgrass industry. Five soils of different soil textural classes were packed in containers with known soil moisture for the laboratory calibration. The logarithmic model best fit the data for the course- and fine-textured soils, with ...


Tiller Contributions To Low-Density Corn Biomass And Yield, R. Veenstra, C. Messina, L. Haag, P. V. Vara Prasad, I. A. Ciampitti Jan 2020

Tiller Contributions To Low-Density Corn Biomass And Yield, R. Veenstra, C. Messina, L. Haag, P. V. Vara Prasad, I. A. Ciampitti

Kansas Agricultural Experiment Station Research Reports

Tillers (commonly termed “suckers”) have lower overall yield contributions in corn (Zea mays L.) than in other Poaceae species. Current research evaluating the value of tillers in corn is scarce, particularly under water-limited conditions. This study aims to quantify relationships between tiller, main plant, and full (considering both tiller and main plant fractions) plant aboveground biomass and yields of corn under low plant density scenarios. Experiments were conducted in the 2019 growing season at three sites across Kansas (Garden City, Goodland, and Manhattan) evaluating two tiller-prone corn hybrids common in this region (P0805AM and P0657AM) at two plant densities (10 ...


2019 Kansas State University Industrial Hemp Cbd Variety Trial, Jason Griffin, Michael J. Shelton, Clint Wilson, Tami Myers Jan 2020

2019 Kansas State University Industrial Hemp Cbd Variety Trial, Jason Griffin, Michael J. Shelton, Clint Wilson, Tami Myers

Kansas Agricultural Experiment Station Research Reports

Hemp is a broad term used to describe the many varieties of Cannabis sativa L. that produce less than 0.3% tetrahydrocannabinol (THC). The crop is globally significant, but only recently allowed to be grown again in the United States. Varieties have been selected and are currently grown with a wide range of cannabinoid profiles. Cannabinoids are of interest for their putative medical and therapeutic role in humans and pets. Cannabidiol (CBD) and THC are the two cannabinoids of primary interest. THC is of interest because it determines whether the final product is considered hemp (0.3% THC). CBD is ...


Sale Price Of Holstein Feeder Steer Lots Relative To Other Breed Descriptions Sold Through Superior Livestock Video Sales From 2010 Through 2018, E. D. Mccabe, M. J. Smith, M. E. King, K. E. Fike, G. M. Rogers, K. G. Odde Jan 2020

Sale Price Of Holstein Feeder Steer Lots Relative To Other Breed Descriptions Sold Through Superior Livestock Video Sales From 2010 Through 2018, E. D. Mccabe, M. J. Smith, M. E. King, K. E. Fike, G. M. Rogers, K. G. Odde

Kansas Agricultural Experiment Station Research Reports

Objective: The objective of this study was to determine the relative value of Holstein feeder steer lots compared to steer lots of other breed descriptions sold through video auctions while adjusting for all other factors that significantly influenced sale price.

Study Description: Data were analyzed from 14,075 lots of feeder steers sold via 211 livestock video auctions from 2010 through 2018. All lot characteristics that could be accurately quantified or categorized were used to develop a multiple regression model with backwards selection. A lot was categorized into one of four breed descriptions: 1) English, English crossed; 2) English-Continental crossed ...


Factors Affecting The Sale Price Of Bred Heifers And Bred Cows Sold Through Superior Livestock Video Auctions, M. J. Smith, E. D. Mccabe, M. E. King, K. E. Fike, G. M. Rogers, K. G. Odde Jan 2020

Factors Affecting The Sale Price Of Bred Heifers And Bred Cows Sold Through Superior Livestock Video Auctions, M. J. Smith, E. D. Mccabe, M. E. King, K. E. Fike, G. M. Rogers, K. G. Odde

Kansas Agricultural Experiment Station Research Reports

Objective: The objective of the study was to evaluate potential factors influencing the sale price of bred heifers and bred cows sold through video auctions while adjusting for all other factors that significantly influenced prices.

Study Description: Descriptive characteristics of lots offered for sale were obtained through a livestock video auction service (Superior Livestock Auction, Fort Worth, TX). Data were available on 1,870 lots of bred heifers sold through video auctions from 2010 through 2018 and 1,237 lots of bred cows sold through video auctions from 2011 through 2018. Two separate multiple regression models were developed to determine ...


Syngenta Enogen Feed Corn Containing An Alpha Amylase Expression Trait Improves Digestibility In Growing Calf Diets, M. A. Johnson, T. J. Spore, S. P. Montgomery, C. S. Kubick, J. S. Garzón, W. R. Hollenbeck, R. N. Wahl, C. I. Vahl, E. D. Watson, D. A. Blasi Jan 2020

Syngenta Enogen Feed Corn Containing An Alpha Amylase Expression Trait Improves Digestibility In Growing Calf Diets, M. A. Johnson, T. J. Spore, S. P. Montgomery, C. S. Kubick, J. S. Garzón, W. R. Hollenbeck, R. N. Wahl, C. I. Vahl, E. D. Watson, D. A. Blasi

Kansas Agricultural Experiment Station Research Reports

Objective: To evaluate the digestibility parameters of growing cattle when fed Enogen Feed corn.

Study Description: Seven cannulated Holstein steers were used to determine the effects on digestibility when fed Enogen Feed corn (Syngenta) as whole-corn or processed as dry-rolled at ad libitum intake.

The Bottom Line: When Enogen Feed corn was fed in an ad libitum fashion to growing calves, dry matter and organic matter are digested to a greater extent relative to yellow corn.


Smartamine M Supplementation Reduces Inflammation But Does Not Affect Performance In Receiving Beef Heifers, M. S. Grant, H. F. Speer, W. R. Hollenbeck, R. N. Wahl, N. D. Luchini, D. A. Blasi, E. C. Titgemeyer Jan 2020

Smartamine M Supplementation Reduces Inflammation But Does Not Affect Performance In Receiving Beef Heifers, M. S. Grant, H. F. Speer, W. R. Hollenbeck, R. N. Wahl, N. D. Luchini, D. A. Blasi, E. C. Titgemeyer

Kansas Agricultural Experiment Station Research Reports

Objective: This study was conducted to evaluate the ability of supplemental methionine to improve health, inflammation status, and performance of receiving cattle.

Study Description: A group of 384 crossbred heifers (initial weight 489 lb) of Tennessee origin were used in a 45-day receiving trial with limit-feeding to evaluate the effects of supplemental methionine (Smartamine M; Adisseo, Alpharetta, GA) on health, inflammation, and performance. Cattle received either 0 (control) or 10 grams/day Smartamine M, a ruminally protected methionine product. Plasma haptoglobin levels measured on days 0, 14, and 45 were used as a biomarker of inflammation.

The Bottom Line: Supplemental ...


Effects Of Guanidinoacetic Acid On Lean Growth And Methionine Flux In Cattle, M. Ardalan, M. D. Miesner, C. D. Reinhardt, D. U. Thomson, C. K. Armendariz, E. C. Titgemeyer Jan 2020

Effects Of Guanidinoacetic Acid On Lean Growth And Methionine Flux In Cattle, M. Ardalan, M. D. Miesner, C. D. Reinhardt, D. U. Thomson, C. K. Armendariz, E. C. Titgemeyer

Kansas Agricultural Experiment Station Research Reports

Objective: To evaluate the effect of supplementing guanidinoacetic acid in the presence or absence of L-methionine on nitrogen retention (lean tissue growth) when cattle were purposefully maintained under conditions of a methionine deficiency.

Study Description: Seven ruminally-cannulated Holstein steers (355 lb) were used in an experiment where each steer received each of six treatments. Treatments were abomasal infusion of 0 or 6 g/day methionine, and 0, 7.5, or 15 g/day guanidinoacetic acid, with all combinations represented. Energy was supplied by ruminal infusion of volatile fatty acids and abomasal infusion of glucose. All essential amino acids except methionine ...


Sensory Evaluation From Asian Consumers Of Six Different Beef Shank Cuts, W. Wu, E. A. Rice, B. A. Olson, T. G. O'Quinn, T. A. Houser, E. A. Boyle, M. D. Chao Jan 2020

Sensory Evaluation From Asian Consumers Of Six Different Beef Shank Cuts, W. Wu, E. A. Rice, B. A. Olson, T. G. O'Quinn, T. A. Houser, E. A. Boyle, M. D. Chao

Kansas Agricultural Experiment Station Research Reports

Objective: The objective of this study was to evaluate factors affecting Asian consumers’ purchasing decisions and eating preferences of six different beef shank cuts.

Study Description: Six different beef shank cuts, three from the forequarter [biceps brachii (shank A); a combination of deep digital flexor and flexor digitorum superficialis (shank B); extensor carpi radialis (shank C)], and three from the hindquarter [flexor digitorum superficialis (shank D); deep digital flexor (shank E); and a combination of long digital extensor, medial digital extensor and peroneus tertius (shank F)] were collected from 12 U.S. Department of Agriculture Low Choice beef carcasses. Shanks ...


Acknowledgments, Livestock And Meat Industry Council, Inc., Cattlemen's Day 2020 Jan 2020

Acknowledgments, Livestock And Meat Industry Council, Inc., Cattlemen's Day 2020

Kansas Agricultural Experiment Station Research Reports

Listed below are individuals, organizations, and firms that have contributed to the beef research program through financial support, product donations, or services. We appreciate your help!

Livestock and Meat Industry Council, Inc.


Cattlemen's Day 2020 Jan 2020

Cattlemen's Day 2020

Kansas Agricultural Experiment Station Research Reports

Research on beef cattle management, nutrition, and meat science at Kansas State University.


Saline Experimental Range Dormant Season Wildfire: Short-Term Effect On Forage Production And Plant Composition, Keith R. Harmoney Jan 2020

Saline Experimental Range Dormant Season Wildfire: Short-Term Effect On Forage Production And Plant Composition, Keith R. Harmoney

Kansas Agricultural Experiment Station Research Reports

Rangeland wildfires in the southern plains may occur any time of year, but the low hu­midity, increasing temperatures, and dry and abundant fuel load of late winter and early spring can result in greater wildfire occurrence and severity. Fires that occur before the growing season remove standing residual vegetation and greatly reduce litter cover, so the soil surface may be left bare for several weeks or months before the onset of new pas­ture growth. Exposure of plant buds to cold temperatures during dormancy, soil water evaporation, and soil crusting from the force of falling precipitation and puddling may ...


Spices Fed To Growing Heifers On Bromegrass Result In Increased Gains With Some Effects On Tick Populations, J. K. Farney Jan 2020

Spices Fed To Growing Heifers On Bromegrass Result In Increased Gains With Some Effects On Tick Populations, J. K. Farney

Kansas Agricultural Experiment Station Research Reports

Alternative methods to antibiotics/chemical usage in cattle production have been of interest in recent years and essential oils/spices have been promoted to fill this niche. The purpose of this research was to evaluate effect of feeding spices on heifer gains and as a control method for ticks. Eight bromegrass pastures were stocked (March to November) with four heifers per pasture to compare control mineral (CON) to mineral containing spices (SPICE; garlic + proprietary blend of 4 spices). Mineral (4 oz/hd/d) was blended in dried distillers grains (DDGs) and total blend was supplemented daily at 0.5% of ...


Nitrogen Fertilizer Timing And Phosphorus And Potassium Fertilization Rates For Established Endophyte-Free Tall Fescue, D. W. Sweeney, J. K. Farney, J. L. Moyer Jan 2020

Nitrogen Fertilizer Timing And Phosphorus And Potassium Fertilization Rates For Established Endophyte-Free Tall Fescue, D. W. Sweeney, J. K. Farney, J. L. Moyer

Kansas Agricultural Experiment Station Research Reports

Tall fescue production was measured during the second year of a study with locations started in fall of 2016 and fall of 2017. In the second year at both sites, phosphorus (P) fertilization rate did not affect harvest yields. Applying nitrogen (N) in late fall or late winter resulted in greater spring yields than applying N in spring or not applying N. However, fall harvest yields at Site 1 in 2018 were greater without N, but were greater with spring N application at Site 2 in 2019. In both site-years, the second-year tall fescue total yield rank as affected by ...


Response Of Soybean Grown On A Claypan Soil In Southeastern Kansas To The Residual Of Different Plant Nutrient Sources And Tillage, D. W. Sweeney, P. Barnes, G. Pierzynski Jan 2020

Response Of Soybean Grown On A Claypan Soil In Southeastern Kansas To The Residual Of Different Plant Nutrient Sources And Tillage, D. W. Sweeney, P. Barnes, G. Pierzynski

Kansas Agricultural Experiment Station Research Reports

The residual from previous high-rate turkey litter applications, which were based on nitrogen (N) requirements of the previous grain sorghum crop, increased 2019 soybean yield more than that obtained from the residual of phosphorus (P)-based turkey litter applications (low rate) or the control. Even though early soybean growth was unaffected by residual treatments, the dry matter production at the R6 growth stage was greater with N-based litter application than with P-based applications or the control.


The Cost Of Tillage, G. F. Sassenrath Jan 2020

The Cost Of Tillage, G. F. Sassenrath

Kansas Agricultural Experiment Station Research Reports

Tillage has been a common event in farming for centuries. New information and management practices are demonstrating better ways of managing the soil to reduce erosion and improve productivity and profitability. Tillage destroys the soil structure, actually increasing the weeds and reducing the water holding capacity of the soil. Highly erodible areas of a field can lose more than 5 tons of soil per year with conventional tillage. Converting to no-till management can reduce production costs more than $30 per acre per year, saving topsoil and reducing management time in the field.


Corn Date Of Planting And Depth, G. F. Sassenrath, L. Mengarelli, X. Lin Jan 2020

Corn Date Of Planting And Depth, G. F. Sassenrath, L. Mengarelli, X. Lin

Kansas Agricultural Experiment Station Research Reports

The exceptionally wet weather in 2019 impacted corn yield. Excessive rainfall reduced corn emergence and plant stand. Many production fields were replanted due to poor stand from flooding. In this study, corn that was planted too shallow (1 inch) or too deep (3 inches) had less yield than that planted at 2-inch depth. The best yield was observed in the corn planted on April 16, 2019. The results from this record wet year were different from previous years, when early planted corn had higher yields.


Dynamics Of Post-Flowering Nitrogen Uptake And Nitrogen Recovery Efficiency Using 15n Isotope Labeling In Corn, J. A. Fernandez, J. B. Nippert, I. A. Ciampitti Jan 2020

Dynamics Of Post-Flowering Nitrogen Uptake And Nitrogen Recovery Efficiency Using 15n Isotope Labeling In Corn, J. A. Fernandez, J. B. Nippert, I. A. Ciampitti

Kansas Agricultural Experiment Station Research Reports

In corn (Zea mays L.), breeding and selection for grain yield over time has been accom­panied by a simultaneous increase in plant nitrogen (N) uptake. The understanding of plant N dynamics has attracted attention due to the environmental concerns related to N losses coming from fertilization. This research study was implemented to 1) describe N uptake and allocation dynamics, and 2) quantify fertilizer recovery efficiency across late-N strategies. Two field experiments (one under irrigation and one rainfed) were conducted at the Ashland Bottoms Research Farm, KS, during 2017. Three hybrids with different year of release and three N scenarios ...