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The Effect Of Increased Pork Hot Carcass Weights And Chop Thickness On Consumer Visual Appearance And Purchase Intent Ratings Of Top Loin Chops, E. A. Rice, A. B. Lerner, H. E. Price, J. C. Woodworth, M. D. Tokach, S. S. Dritz, R. D. Goodband, J. M. Derouchey, M. W. Allerson, J. M. Gonzales, T. G. O'Quinn

Kansas Agricultural Experiment Station Research Reports

The objective of this study was to evaluate the effect of increased pork hot carcass weights on consumer visual acceptability and purchase intent of top loin chops cut to various thicknesses in a price labeled versus unlabeled retail display scenario. Pork loins (n = 200) were collected from 4 different hot carcass weight groups: a light weight group (less than 246.5 lb; LT), medium light weight group (246.5 to 262.5 lb; MLT), medium heavy weight group (262.5 lb to 276.5 lb; MHVY), and heavy weight group (276.5 lb and greater; HVY). Loins were fabricated into 4 pairs of chops of …

Evaluation Of Tall Fescue Cultivars, J. L. Moyer

Kansas Agricultural Experiment Station Research Reports

Tall fescue (Lolium arundinaceumSchreb.) is the most widely grown forage grass in southeastern Kansas. Its tolerance to extremes in climate and soils of the region is partly attributable to its association with a fungal endophyte,Neotyphodium coenophialum; however, most ubiquitous endophytes are also responsible for production of substances toxic to some herbivores, including cattle, sheep, and horses. Endophytes that purportedly lack toxins, but augment plant vigor have been identified and inserted into tall fescue cultivars adapted to the United States. These cultivars, and others that are fungus-free or contain a ubiquitous endophyte (i.e. Ky 31 EF and …

Tank Mixtures Of Vida For Late Summer Weed Control In Fallow, R. S. Currie, P. W. Geier

Kansas Agricultural Experiment Station Research Reports

Kochia control at soon after application was best when Vida (pyraflufen) was tank mixed with glyphosate, 2,4-D amine, and/or dicamba. However, no Vida treatment controlled kochia more than 60% one month after treatment. Treatments containing glyphosate, 2,4-D, and/or dicamba without Vida did not control kochia more than 33% during the first month. Similarly, Russian thistle control was best regardless of evaluation date when Vida was applied alone or tank mixed with another herbicide. Vida treatments provided 90 to 94% Russian thistle control one month after treatment. Treatments without Vida controlled Russian thistle no more than 63%.

Evaluation Of Salt, Trace Mineral Sources, And Growth Implants On Performance Of Stocker Cattle Grazing Native Flint Hills Pasture, C. S. Weibert, T. J. Spore, M. A. Johnson, F. K. Brazle, G. L. Kuhl, W. R. Hollenbeck, R. N. Wahl, Dale Blasi

Kansas Agricultural Experiment Station Research Reports

Objective:Determine the efficacy of providing salt alone or with injectable trace minerals compared to a complete mineral supplement and growth implants for improving the growth of stocker calves grazing native grass pastures in the Flint Hills region of Kansas.

Study Description:A total of 248 steers originating from Texas and New Mexico were used to determine the effects on performance when provided with salt blocks with or without an injectable trace mineral, compared to performance when provided with a complete mineral supplement. Moreover, the response of two commonly-used growth implants were evaluated.

The Bottom Line:While there was no …

Wet Distiller’S Grains And Wet Corn Gluten With Dry-Rolled Or Whole-Shelled Corn In High-Energy Limit-Fed Diets Do Not Affect Growing Cattle Performance, T. J. Spore, S. P. Montgomery, E. C. Titgemeyer, G. A. Hanzlicek, Christopher Vahl, T. G. Nagaraja, W. R. Hollenbeck, R. N. Wahl, Dale Blasi

Kansas Agricultural Experiment Station Research Reports

Objective:Compare wet distiller’s grains plus solubles and wet corn gluten feed with dry-rolled or whole-shelled corn in a novel programmed-feeding strategy being developed at the Kansas State University Beef Stocker Unit.

Description:A total of 320 crossbred steers were used to determine the effects of two corn by-products and methods of corn processing, utilizing a high-energy limit-fed feeding strategy.

The Bottom Line:Kansas producers have the option of feeding corn by-product and whether or not to process corn in a high-energy limit-fed feeding strategy without the risk of negatively affecting performance.

Late Summer Prescribed Fire And Fall Herbicide Application Show Strong Suppressive Effects On Sericea Lespedeza Frequency And Vigor, G. A. Gatson, W. H. Fick, W. W. Hsu, K C. Olson

Kansas Agricultural Experiment Station Research Reports

Objective:The objective of this study was to evaluate the efficacy of a one-time application of late summer prescribed fire followed by fall herbicide application for substantially reducing sericea lespedeza frequency and vigor.

Study Description:A single 80-acre native tallgrass pasture was divided into 16 units. Each of these units was either burned in early September (burn only), sprayed with Escort XP (DuPont, Wilmington, DE) in late September (spray only), burned in early September and subsequently sprayed in late September (burn + spray), or neither burned nor sprayed (control). Sericea lespedeza frequency and vigor was measured shortly before …

Large-Scale Dryland Cropping Systems, A. Schlegel, L. Haag

Kansas Agricultural Experiment Station Research Reports

The change from conventional tillage to no-till cropping systems has allowed for greater intensification of cropping in semi-arid regions. In the central High Plains, wheat-fallow (1 crop in 2 years) has been a popular cropping system for many decades. This system is being replaced by more intensive wheat-summer crop-fallow rotations (2 crops in 3 years). There has also been increased interest in further intensifying the cropping systems by growing 3 crops in 4 years or continuous cropping. The objective of the study was to identify whether more intensive cropping systems can enhance and stabilize production in rainfed cropping systems to …

Annual Summary Of Weather Data For Parsons – 2017, M. Knapp, L. W. Lomas

Kansas Agricultural Experiment Station Research Reports

Weather Data for Parsons – 2017

Use Of A Fungicide To Reduce Stomatal Conductance For Production Of Sweet Corn Planted At Different Populations With Limited Irrigation, D. W. Sweeney, M. B. Kirkham

Kansas Agricultural Experiment Station Research Reports

Sweet corn is a potential value-added, alternative crop for producers in southeastern Kansas. Corn responds to irrigation, and timing of water deficits can affect yield components. Even though large irrigation sources, such as aquifers, are lacking in southeastern Kansas, supplemental irrigation could be supplied from the substantial number of small lakes and ponds in the area. However, this may not be enough to improve the water use of the plant. Reducing stomatal conductance and adjusting seeding rate may also help reduce water stress and/or improve water use efficiency. The objective of this study was to determine the effect of limited …

Research Center Personnel, Acknowledgments, L. W. Lomas

Kansas Agricultural Experiment Station Research Reports

We thank the following individuals, organizations, and firms that contributed to this year’s research programs through financial support, product donations, or services.

Long-Term Nitrogen And Phosphorus Fertilization Of Irrigated Grain Sorghum, A. Schlegel, H. D. Bond

Kansas Agricultural Experiment Station Research Reports

This study was initiated in 1961 to determine responses of continuous grain sorghum grown under flood irrigation to N, P, and K fertilization. The study is conducted on a Ulysses silt loam soil with an inherently high K content. The irrigation system was changed from flood to sprinkler in 2001.

Effect Of Drilled Seeding And Nitrogen Rate On Grain Sorghum Yield In Southwest Kansas, A. J. Foster, A. Schlegel, I. B. Cuvaca, J. D. Holman, I. A. Ciampitti, C. Thompson, D. Ruiz Diaz, R. Currie

Kansas Agricultural Experiment Station Research Reports

Drilled sorghum is normally done at the super-high population at row spacing between 7.5 and 10 inches, compared to rows planted at the spacing between 15 and 30 inches. Thompson (1983) growing super-thick sorghum at the Hays Research Station from 1974-1977, found that sorghum planted in narrow rows (12-18 in.) often produced higher yields than when planted in wide rows (24-40 in.). Norwood (1982) in Garden City repeated Thompson’s work and also came to the conclusion that yield of high population narrow row sorghum could exceed that of the low population-wide row when subsoil moisture and precipitation were adequate. The …

Extent Of Larval Populations Of Turfgrass Insect Pests At Rocky Ford Turfgrass Research Center At Manhattan, Ks, Raymond A. Cloyd

Kansas Agricultural Experiment Station Research Reports

Many insect pests have a larval or grub stage that resides belowground and feeds on turfgrass roots (Potter, 1998; Vittum et al., 1999; Held and Potter, 2012). The major belowground insect pests (white grubs) associated with turfgrass throughout Midwestern states that are present in Kansas include: May/June beetles (Phyllophagaspp), masked chafers (Cyclocephalaspp), and bluegrass billbug (Sphenophorus parvulus) (Miller et al., 2013). However, there is limited information on the annual occurrence of these insect pests affiliated with the common turfgrass species planted in Kansas, including zoysiagrass (Zoysia japonica) and Kentucky bluegrass (Poa …

Evaluating Zoysiagrass-Tall Fescue Mixtures In Kansas, Mingying Xiang, Jack D. Fry, Megan M. Kennelly

Kansas Agricultural Experiment Station Research Reports

Water conservation is increasingly important when selecting turfgrasses. Zoysiagrass (Zoysia japonica), a C4 grass, is more drought resistant than C3 grasses. However, there is some resistance to the use of zoysiagrass in lawns and golf courses due to its extended dormant period when turf is brown. The objective of this study was to evaluate mowing height, and tall fescue seeding rate and time for establishment of a mixed stand with seeded zoysiagrass. Seeding zoysiagrass and tall fescue together in June generally resulted in a less uniform mixture than seeding zoysiagrass in June and then seeding tall fescue in …

2012 National Turfgrass Evaluation Program Tall Fescue Test: 2017 Data, Linda R. Parsons, Michael J. Shelton, Megan M. Kennelly, Jason J. Griffin, Jared A. Hoyle

Kansas Agricultural Experiment Station Research Reports

Research efforts to improve cultivar quality include selecting for disease resistance and stress tolerance as well as finer leaf texture, a rich green color, and better sward density. Several cultivars included in the 2012 National Turfgrass Evaluation Program Tall Fescue Test performed well and showed good brown patch resistance in south central Kansas during the 2017 growing season.

Field Station Weather Reports, E. A. Adee, M. C. Knapp

Kansas Agricultural Experiment Station Research Reports

Summary of weather for research locations for the 2018 Field report.

The research program at the Kansas State University 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. …

Effect Of Management Practices On Double-Crop Soybean Yields, D. S. S. Hansel, J. Kimball, D. E. Shoup, I. A. Ciampitti

Kansas Agricultural Experiment Station Research Reports

Double-crop soybean has great potential to increase profits and the use of agricultural land. However, there is a gap between double-crop versus full-season soybean yields. To address this yield difference, a study evaluating different management practices on double-crop soybean was conducted. A four-site-year experiment was conducted at Ottawa, KS, during the 2016 and 2017 growing season. In both years, the soybean variety planted was Asgrow 4232 (MG 4.2). The soybean was planted right after two different wheat harvest timings (Study 1, early-wheat harvest 18–20%; and Study 2, conventional-harvest 13–14%). Seven treatments were evaluated in each of the soybean planting dates: …

Soybean Evaluation Of Inoculation: A Three-Year Summary, M. A. Secchi, T. M. Albuquerque, O. A. Ortez, G. I. Carmona, J. Kimball, E. A. Adee, I. A. Ciampitti

Kansas Agricultural Experiment Station Research Reports

The relationships between soybean (Glycine max) seed yield and response to nitrogen (N) fertilization have received considerable coverage in scientific literature. This project aims to quantify the response to inoculation for soybean in a field without previous history of this crop (20 years). To address this objective, field studies were conducted during the 2015, 2016, and 2017 growing seasons at the East Central Experiment Field, Ottawa, KS. The treatments consisted of five different N-management approaches: non-inoculated (NI), inoculation at the recommended commercial rate (I1), a double rate of inoculation (I2), a triple rate of inoculation (I3), and non-inoculated …

Weather Information For Tribune, H. D. Bond, J. Slattery

Kansas Agricultural Experiment Station Research Reports

Summary of weather for research conducted at the Tribune field location.

Weather Information For Garden City, 2017, J. Elliott

Kansas Agricultural Experiment Station Research Reports

Summary of weather for research conducted at the Garden City field location.

Long-Term Nitrogen And Phosphorus Fertilization Of Irrigated Grain Sorghum, A. Schlegel, H. D. Bond

Kansas Agricultural Experiment Station Research Reports

This study was initiated in 1961 to determine responses of continuous grain sorghum grown under flood irrigation to N, P, and K fertilization. The study is conducted on a Ulysses silt loam soil with an inherently high K content. The irrigation system was changed from flood to sprinkler in 2001.

Wheat Stubble Height On Subsequent Corn And Grain Sorghum Crops, A. Schlegel, L. Haag

Kansas Agricultural Experiment Station Research Reports

A field study initiated in 2006 at the Southwest Research-Extension Center near Tribune, KS, was designed to evaluate the effects of three wheat stubble heights on subsequent grain yields of corn and grain sorghum. Corn and sorghum yields in 2017 were greater than the long-term average. When averaged from 2007 through 2017, corn grain yields were 9 bu/a greater when planted into either high or strip-cut stubble than into low-cut stubble. Average grain sorghum yields were 5 bu/a (but not significantly) greater in high-cut stubble than low-cut stubble. Similarly, water use efficiency was greater for high or strip-cut stubble for …

Forage Type And Maturity Effects On Yield And Nutritive Value, J. D. Holman, A. Obour, T. Roberts, S. Maxwell

Kansas Agricultural Experiment Station Research Reports

Forage sorghum (Sorghum bicolorL.) and sorghum × sudan (Sorghum bicolor sssp. Drummondii) are important annual forages in the High Plains. Advancements in brown mid-rib (BMR) cultivars will likely affect forage yield and nutritive values. A study was initiated in 2017 at the Southwest Research-Extension Center near Garden City, KS, comparing one variety each of BMR and non-BMR forage sorghum and sorghum × sudan cultivars. Forage type and growth stage affected yield and nutritive value, and occasionally there was an interaction between forage type and maturity.

Diflexx Duo Compared To Capreno, Halex Gt, Armezon, Outlook, Status, Degree Xtra, And Bicep Ii Magnum For Weed Control In Irrigated Corn, R. S. Currie, P. W. Geier

Kansas Agricultural Experiment Station Research Reports

Control of kochia, quinoa, and green foxtail was complete with all herbicides at 78 days after treatment (DAT). Palmer amaranth, common sunflower, and crabgrass was 97% at 8 DAT. By 78 DAT, common sunflower control was complete with all herbicides. Crabgrass control at 78 DAT was excellent except when Diflexx Duo (dicamba + tembotrione) at 24 oz/a + atrazine was mixed with glyphosate or Liberty. All herbicide-treated corn yielded 111 to 126 bu/a more grain than the untreated controls. The various additions to the premixes improved weed control to the point that no difference occurred among them for yield.

Southwest Research-Extension Center Field Day 2018, R. Gillen

Kansas Agricultural Experiment Station Research Reports

Kansas agricultural research from the Southwest Research-Extension Center.

The Effects Of Maternal Dietary Supplementation Of Cholecalciferol (Vitamin D3) And 25(Oh)D3 On Sow And Progeny Performance, M. T. Thayer, J. L. Nelssen, A. J. Langemeier, J. Morton, J. M. Gonzales, S. R. Kruger, Z. Ou, A. J. Makowski, J. R. Bergstrom

Kansas Agricultural Experiment Station Research Reports

A total of 69 sows (DNA Line 200 × 400) and their progeny were used to determine if feeding a combination of vitamin D₃(Rovimix D₃, 500,000 IU/g; DSM Nutritional Products, Parsippany, NJ) and 25(OH)D₃(Hy-D, DSM Nutritional Products, Parsippany, NJ) influences neonatal and sow vitamin D3 status, muscle fiber morphometrics and development of the piglets, and subsequent growth performance to market. Within 3 days of breeding, sows were allotted to 1 of 3 dietary treatments fortified with 680 IU/lb vitamin D₃(CON), 227 IU/lb vitamin D₃+ 11.3 μg/lb 25(OH)D₃(DL), or …

Evaluating Medium Chain Fatty Acids As An Alternative To Chlortetracycline In Nursery Pig Diets, R. A. Cochrane, J. R. Pluske, J. P. Mansfield, S. S. Dritz, J. C. Woodworth, M. D. Tokach, M. C. Niederwerder, C. B. Paulk, C. K. Jones

Kansas Agricultural Experiment Station Research Reports

An experiment was conducted to evaluate medium chain fatty acids (MCFA) as a potential alternative to chlortetracycline (CTC) in nursery pigs. One hundred entire male pigs (initially 14.1 ± 1.6 lb body weight (BW) and weaned at 22 d of age) were used in a 29-d disease challenge study. Pigs were allowed 5 acclimation days after weaning, followed by 2 d of disease challenge with Enterotoxigenic β-hemolyticEscherichia coli(ETEC), serotype O149:K91: K88. After the challenge, pigs were allotted to a diet with 1 of 5 treatments: 1) control with no additives; 2) 400 g/ton CTC (Chlortet 200G, Eco Animal …

Evaluation Of Different Combinations Of Medium Chain Fatty Acids And Monolaurin As A Dietary Additive For Nursery Pigs, L. L. Thomas, A. R. Hartman, J. C. Woodworth, M. D. Tokach, R. D. Goodband, S. S. Dritz, J. M. Derouchey, D. M. Mckilligan, A. M. Jones

Kansas Agricultural Experiment Station Research Reports

A total of 360 pigs (DNA 400 × 200, initial body weight (BW) = 15.0 lb) were used in a 35-d growth trial to evaluate the effects of adding medium chain fatty acids (MCFA) and monolaurin blends to the diet on growth performance of nursery pigs. Monolaurin is a monoglyceride of C12 and is thought to have antibacterial and antiviral properties. Following arrival to the nursery research facility, pigs were randomized to pens (5 pigs per pen) and allowed a 4-d acclimation period. Thereafter, pens of pigs were blocked by BW and randomized to 1 of 6 dietary treatments (12 …

Standardized Total Tract Digestible Phosphorus Requirement Of 13- To 28-Lb Pigs Fed Diets With Or Without Phytase, F. Wu, J. C. Woodworth, M. D. Tokach, J. M. Derouchey, S. S. Dritz, R. D. Goodband

Kansas Agricultural Experiment Station Research Reports

A total of 1,080 nursery pigs (PIC 280 ×1050, initially 13.0 ± 2.38 lb BW) were housed in 3 commercial research rooms and used in a 46-d study to determine the effects of increasing standardized total tract digestible (STTD) phosphorus (P) concentrations in diets with and without phytase on growth performance and percentage bone ash. Pens of pigs (10 pigs per pen, 9 pens per treatment) were balanced for equal pen weights and allotted randomly to 1 of 12 treatments. Dietary treatments were arranged in 2 sets of dose titration with 6 levels of STTD P with and without 2,000 …

Effects Of Analyzed Calcium To Phosphorus Ratio On Growth Performance, Carcass Characteristics, Bone Mineralization, And Economics Of 56- To 279-Lb Pigs Fed Diets Containing Phytase, C. M. Vier, S. S. Dritz, M. D. Tokach, M. A. Gonçalves, U. A. Orlando, W. Cast, J. R. Bergstrom, J. C. Woodworth, R. D. Goodband, J. M. Derouchey

Kansas Agricultural Experiment Station Research Reports

A total of 1,215 barrows and gilts (PIC; 359 × Camborough) with an initial pen average body weight (BW) of 55.7 ± 2.06 lb were used in a 114-d growth trial to determine the effects of different analyzed calcium to analyzed phosphorus ratios on performance of growing-finishing pigs from 57- to 279-lb fed diets containing 1,000 phytase units. Pens of pigs were randomly assigned to 1 of 5 dietary treatments in a randomized complete block design with BW as a blocking factor. There were 9 replicate pens per treatment and 27 pigs per pen. The experimental diets were corn-soybean meal-based …