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Articles 1 - 30 of 176
Full-Text Articles in Life Sciences
Generating An Equation To Predict Post- Farrow Maternal Weight In Multiple Parity Sows, L. L. Thomas, S. S. Dritz, R. D. Goodband, M. D. Tokach, J. M. Derouchey, J. C. Woodworth
Generating An Equation To Predict Post- Farrow Maternal Weight In Multiple Parity Sows, L. L. Thomas, S. S. Dritz, R. D. Goodband, M. D. Tokach, J. M. Derouchey, J. C. Woodworth
Kansas Agricultural Experiment Station Research Reports
ost-farrow maternal weight is required when partitioning maternal and fetal weight gains throughout gestation. Equations were developed from the analysis of 150 females (Line 1050, PIC, Hendersonville, TN) to predict the weight of conceptus by difference of pre- and post-farrowing weight change in multi-parity sows. Females were individually weighed as they were moved into the farrowing house at d 110 to 112 of gestation and again at 12 to 24 h after farrowing. Data were divided into 4 groups: (1) parity 1 sows; (2) parity 2 sows; (3) parity 3 sows; and (4) parity 4+ sows. Each group tested 3 …
Determination Of The Optimum Levels Of Dietary Crude Protein For Growth Performance And Carcass Characteristics Of Finishing Pigs From 240 To 280 Lb, J. Soto, M. D. Tokach, S. S. Dritz, J. C. Woodworth, J. M. Derouchey, R. D. Goodband
Determination Of The Optimum Levels Of Dietary Crude Protein For Growth Performance And Carcass Characteristics Of Finishing Pigs From 240 To 280 Lb, J. Soto, M. D. Tokach, S. S. Dritz, J. C. Woodworth, J. M. Derouchey, R. D. Goodband
Kansas Agricultural Experiment Station Research Reports
A total of 224 pigs (PIC 327 × 1050, initially 241.1 lb) were used in a 20-d trial to determine the optimum dietary CP concentration for growth performance and carcass characteristics of finishing pigs. Pens of 7 pigs were allotted by BW and randomly assigned to 1 of 4 dietary treatments with 7 or 8 replications per treatment. Dietary treatments included 4 levels of CP (10, 11, 12, and 13%) that were formed by reducing the amount of crystalline Lys in a corn-soybean meal diet. At d 20, pigs were transported to a packing plant for processing and carcass data …
Effect Of Sample Preparation And Extended Mix Times With Different Salt Particle Sizes On The Uniformity Of Mix Of A Corn-Soybean Meal Swine Diet, M. Saensukjaroenphon, C. K. Jones, C. H. Fahrenholz, C. R. Stark
Effect Of Sample Preparation And Extended Mix Times With Different Salt Particle Sizes On The Uniformity Of Mix Of A Corn-Soybean Meal Swine Diet, M. Saensukjaroenphon, C. K. Jones, C. H. Fahrenholz, C. R. Stark
Kansas Agricultural Experiment Station Research Reports
The uniformity of a feed mixture is determined from the coefficient of variation (CV) of 10 samples in a single batch of feed. The feed industry standard is a CV of less than 10% using a single source tracer, such as salt, trace minerals, or iron filings. The objectives of these experiments were to determine the effects of 1) extended mix time, 2) particle size of the marker, and 3) sample preparation on the CV in a corn-soybean meal swine diet. In Experiment 1, treatments were arranged in a 3 × 7 factorial with main effects of 3 salt particle …
Delayed Insemination Of Non-Estrual Beef Heifers In 7-Day Co-Synch Timed Artificial Insemination, D. C. Shaw, K. E. Fike, David Grieger
Delayed Insemination Of Non-Estrual Beef Heifers In 7-Day Co-Synch Timed Artificial Insemination, D. C. Shaw, K. E. Fike, David Grieger
Kansas Agricultural Experiment Station Research Reports
Reproductive performance in cattle is considered to be the most economically important trait and is essential for the success of an operation. In the last decade, timed artificial insemination (AI) in the beef cattle industry has increased in popularity due to the decreased amount of labor required for estrous detection. To increase the use of AI; however, cost and time inputs need to be further decreased. The objective of this study was to determine if fertility could be improved in beef heifers that are not expressing estrus before timed AI by delaying insemination.
Supplemental Zinc Sulfate Affects Growth Performance Of Finishing Heifers, C. L. Van Bibber-Krueger, J. S. Drouillard
Supplemental Zinc Sulfate Affects Growth Performance Of Finishing Heifers, C. L. Van Bibber-Krueger, J. S. Drouillard
Kansas Agricultural Experiment Station Research Reports
Zinc is an essential mineral required for normal function of more than 300 enzymes in microorganisms, plants, and animals. Zinc-requiring enzymes participate in metabolism of nucleic acids, proteins, and carbohydrates, all of which are essential for growth of cattle. In addition, zinc is necessary for normal development and function of the immune system. The requirement for zinc in finishing cattle diets has been established at 30 ppm (NRC, Nutrient Requirements of Beef Cattle, 2000), though concentrations recommended by consulting nutritionists and feed manufacturers span a far broader range. The purpose of this study was to evaluate the effects of feeding …
Nitrous Oxide Emissions And Carbon Sequestration In Turfgrass: Effects Of Irrigation And Nitrogen Fertilization (Year 1), R. Braun, D. Bremer, J. Fry
Nitrous Oxide Emissions And Carbon Sequestration In Turfgrass: Effects Of Irrigation And Nitrogen Fertilization (Year 1), R. Braun, D. Bremer, J. Fry
Kansas Agricultural Experiment Station Research Reports
In this study, annual nitrous oxide (N2O) emissions were greatest in urea and least in untreated (no N) among treatments. Differences were negligible due to irrigation treatment. Irrigation levels may be decreased further in the final year to induce slight stress on the low irrigation treatment. All fertilizer treatments maintained acceptable quality, however the controlled-release fertilizer resulted in more consistent visual quality ratings compared to urea and untreated. Urea fertilizer had higher peak fluxes after fertilization and overall annual emissions than polymer-coated N-fertilizer. Thus, controlled released N fertilizers, such as polymer-coated urea, in turfgrass systems could potentially help …
Development Of Cold Hardy, Large Patch Resistant Zoysiagrass Cultivars For The Transition Zone, Mingying Xiang, J. Fry, M. Kennelly
Development Of Cold Hardy, Large Patch Resistant Zoysiagrass Cultivars For The Transition Zone, Mingying Xiang, J. Fry, M. Kennelly
Kansas Agricultural Experiment Station Research Reports
TAES 5645, aZ. japonicagenotype that exhibited resistance to large patch in preliminary studies, was used as a breeding parent and crossed with 22 cold hardy zoysiagrasses, resulting in 985 progeny. These progeny were evaluated for cold hardiness and agronomic traits (establishment rate, overall quality, spring greenup, leaf texture, and genetic color) in Manhattan, KS; West Lafayette, IN; and Dallas, TX; from 2012 to 2014. From this work, 60 progeny were identified for further evaluation in larger plots. During the 2015-2016 establishment year, experimental line 6102-47 showed good vigor and spring green up rate, which is comparable to ‘Meyer,’ …
Corn Yield Response To Plant Populations, D. E. Shoup, Eric Adee, I. A. Ciampitti
Corn Yield Response To Plant Populations, D. E. Shoup, Eric Adee, I. A. Ciampitti
Kansas Agricultural Experiment Station Research Reports
Corn hybrid development with a focus on drought tolerance has emerged in recent years, and producers have questions about their yield performance across a range of plant populations. A three-year study was conducted to determine the yield of corn hybrids across several plant populations. Corn hybrids responded differently across three different yield environments in 2013, 2014, and 2015. In 2013, a lower yield environment occurred. The hybrid with drought tolerance had the greatest yield of 95 bu/a at a plant population of 21,500 plants/a, whereas the non-drought tolerant hybrid’s greatest yield was 90 bu/a at a plant population of 13,500 …
Nitrogen And Sulfur Fertilization Effects On Camelina Sativa In West Central Kansas, E. Obeng, A. Obour, N. O. Nelson
Nitrogen And Sulfur Fertilization Effects On Camelina Sativa In West Central Kansas, E. Obeng, A. Obour, N. O. Nelson
Kansas Agricultural Experiment Station Research Reports
Camelina sativais early maturing and possesses characteristics that make it a good fit as a rotation crop in dryland wheat cropping systems. Nitrogen (N) and sulfur (S) play very important roles in oilseed production, including camelina. This study was conducted over 3 years to determine N and S rates necessary for optimum camelina production in west central Kansas. The experiment was set up as randomized complete blocks with four replications in a split-plot arrangement. Treatments were two sulfur rates (0 and 18 lb/a) as the main plots, and four N rates (0, 20, 40, and 80 lb/a) as the …
Fallow Replacement Crop (Cover Crops, Annual Forages, And Short-Season Grain Crops) Effects On Wheat And Grain Sorghum Yields, J. D. Holman, T. Roberts, S. Maxwell
Fallow Replacement Crop (Cover Crops, Annual Forages, And Short-Season Grain Crops) Effects On Wheat And Grain Sorghum Yields, J. D. Holman, T. Roberts, S. Maxwell
Kansas Agricultural Experiment Station Research Reports
Producers are interested in growing cover crops and reducing fallow. Growing a crop during the fallow period would increase profitability if crop benefits exceeded expenses. Benefits of growing a cover crop were shown in high rainfall areas, but limited information is available on growing cover crops in place of fallow in the semiarid Great Plains. A study was done from 2007–2016 that evaluated cover crops, annual forages, and short season grain crops grown in place of fallow. In the first experiment (2007-2012) the rotation was no-till wheat-fallow, and in the second experiment (2012-2016) the rotation was no-till wheat-grain sorghum-fallow. This …
Mobile Drip Irrigation Evaluation In Corn, I. Kisekka, T. Oker, G. Nguyen, J. Aguilar, D. Rogers
Mobile Drip Irrigation Evaluation In Corn, I. Kisekka, T. Oker, G. Nguyen, J. Aguilar, D. Rogers
Kansas Agricultural Experiment Station Research Reports
Mobile Drip Irrigation (MDI) involves attaching driplines to center pivot drops. MDI has potential to eliminate water losses due to spray droplet evaporation, water evaporation from the canopy, and wind drift. MDI also may reduce soil water evaporation due to limited surface wetting. A study was conducted with the following objectives: 1) compare soil water evaporation under MDI and in-canopy spray nozzles; 2) evaluate soil water redistribution under MDI at 60 inch dripline lateral spacing; 3) compare corn grain yield, water productivity, and irrigation water use efficiency; and 4) compare end-of-season profile soil water under MDI and in-canopy spray at …
Wheat Stubble Height On Subsequent Corn And Grain Sorghum Crops, A. Schlegel
Wheat Stubble Height On Subsequent Corn And Grain Sorghum Crops, A. Schlegel
Kansas Agricultural Experiment Station Research Reports
A field study initiated in 2006 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 2015 were greater than the long-term average. When averaged from 2007 through 2015, corn grain yields were 10 bu/a greater when planted into either high or strip-cut stubble than into low-cut stubble. Average grain sorghum yields were 6 bu/a greater in high-cut stubble than low-cut stubble. Similarly, water use efficiency was greater for high or strip-cut stubble for corn and high-cut stubble for grain sorghum. Harvesting wheat shorter than …
Evaluating The Inclusion Level Of Medium Chain Fatty Acids To Reduce The Risk Of Porcine Epidemic Diarrhea Virus In Complete Feed And Spray-Dried Animal Plasma, R. A. Cochrane, S. S. Dritz, J. C. Woodworth, A. R. Huss, C. R. Stark, M. Saensukjaroenphon, J. M. Derouchey, M. D. Tokach, R. D. Goodband, J. Bai, Qi Chen, Jianqiang Zhang, Phillip Charles Gauger, Rachel J. Derscheid, Drew Robert Magstadt, Paulo Elias Arruda, Alejandro Ramirez, Rodger G. Main, C. K. Jones
Evaluating The Inclusion Level Of Medium Chain Fatty Acids To Reduce The Risk Of Porcine Epidemic Diarrhea Virus In Complete Feed And Spray-Dried Animal Plasma, R. A. Cochrane, S. S. Dritz, J. C. Woodworth, A. R. Huss, C. R. Stark, M. Saensukjaroenphon, J. M. Derouchey, M. D. Tokach, R. D. Goodband, J. Bai, Qi Chen, Jianqiang Zhang, Phillip Charles Gauger, Rachel J. Derscheid, Drew Robert Magstadt, Paulo Elias Arruda, Alejandro Ramirez, Rodger G. Main, C. K. Jones
Kansas Agricultural Experiment Station Research Reports
Research has confirmed that chemical treatments, such as medium chain fatty acids (MCFA) and commercial formaldehyde, can be effective to reduce the risk of porcine epidemic diarrhea virus (PEDV) cross-contamination in feed. However, the efficacy of MCFA levels below 2% inclusion is unknown. The objective of this experiment was to evaluate if a 1% inclusion of MCFA is as effective at PEDV mitigation as a 2% inclusion or formaldehyde in swine feed and spray-dried animal plasma (SDAP). Treatments were arranged in a 4 × 2 × 7 plus 2 factorial with 4 chemical treatments: 1) PEDV positive with no chemical …
Determination Of Probiotic And/Or Chlortetracycline Inclusion Effects On Nursery Pig Growth Performance, H. Williams, M. D. Tokach, S. S. Dritz, J. C. Woodworth, J. M. Derouchey, R. G. Amachawadi, T. G. Nagaraja, R. D. Goodband
Determination Of Probiotic And/Or Chlortetracycline Inclusion Effects On Nursery Pig Growth Performance, H. Williams, M. D. Tokach, S. S. Dritz, J. C. Woodworth, J. M. Derouchey, R. G. Amachawadi, T. G. Nagaraja, R. D. Goodband
Kansas Agricultural Experiment Station Research Reports
A total of 300 nursery pigs (DNA 200 × 400, Columbus, NE; initially 13.0 lb BW) were used in a 42-d study evaluating the effects of feeding chlortetracycline (CTC) in combination with probiotics on nursery pig performance. Probiotics are a class of antimicrobial alternatives designed to enhance growth performance and digestive tract health. Pigs were weaned at approximately 21 d of age and allotted to pens based on initial BW. Pigs were fed a common pelleted starter diet for 4 d and then weighed, and pens were allotted to 1 of 6 dietary treatments based on BW in a completely …
Soil Microbial Activity With Depth In Claypan Soils Of Southeast Kansas, C. J. Hsiao, Gretchen Sassenrath, Charles Rice, L. Zeglin, G. Hettiarachchi
Soil Microbial Activity With Depth In Claypan Soils Of Southeast Kansas, C. J. Hsiao, Gretchen Sassenrath, Charles Rice, L. Zeglin, G. Hettiarachchi
Kansas Agricultural Experiment Station Research Reports
Enzyme activities in soil indicate the relative activities of microbes, which include bacteria, fungi, algae, and other organisms. Changes in soil management alter the composition and activity of soil microbes. Plants rely on soil microbes to break down soil nutrients, and make those nutrients available for plant growth. Symbiotic relationships between soil microbes and plants enhance plant growth and productivity. Alternatively, antagonistic relationships between the soil microbial community and plants limit plant production. Soil dwellers such as nematodes or disease-causing fungi such asMacrophomina phaseolina(the fungus responsible for charcoal rot) can be particularly deleterious to crop growth and yield. …
Kansas River Valley Experiment Field, Eric Adee
Kansas River Valley Experiment Field, Eric Adee
Kansas Agricultural Experiment Station Research Reports
The Kansas River Valley Experiment Field was established to study management and effective use of irrigation resources for crop production in the Kansas River Valley (KRV). The Paramore Unit consists of 80 acres located 3.5 miles east of Silver Lake on U.S. Highway 24, then 1 mile south of Kiro, and 1.5 miles east on 17th street. The Rossville Unit consists of 80 acres located 1 mile east of Rossville or 4 miles west of Silver Lake on U.S. Highway 24.
Tillage Study For Corn And Soybeans: Comparing Vertical, Deep, And No-Till, Eric Adee
Tillage Study For Corn And Soybeans: Comparing Vertical, Deep, And No-Till, Eric Adee
Kansas Agricultural Experiment Station Research Reports
The need for tillage in corn and soybean production in the Kansas River Valley continues to be debated. The soils of the Kansas River Valley are highly variable, with much of the soil sandy to silty loam in texture. These soils tend to be relatively low in organic matter (<2%) and susceptible to wind erosion. Although typically well drained, these soils can develop compaction layers under certain conditions. A tillage study was initiated in the fall of 2011 at the Kansas River Valley Experiment Field near Topeka to compare deep vs. shallow vs. no-till vs. deep tillage in alternate years. Corn and soybean crops will be rotated annually. This is intended to be a long-term study to determine if soil characteristics and yields change in response to a history of each tillage system.
2015 Kansas Winter Annual Forage Variety Trial, J. D. Holman, T. Roberts, S. Maxwell
2015 Kansas Winter Annual Forage Variety Trial, J. D. Holman, T. Roberts, S. Maxwell
Kansas Agricultural Experiment Station Research Reports
A total of 16 winter annual forage varieties were tested for performance near Garden City, KS, at the Southwest Research-Extension Center in 2014-2015. Winter crops evaluated included wheat, triticale, and cereal rye.
Effects Of Aminogut And Diet Formulation Approach On Growth Performance And Economic Return In Nursery Pigs, M. A. Gonçalves, M. D. Tokach, S. S. Dritz, K. Touchette, J. M. Derouchey, J. C. Woodworth, R. D. Goodband
Effects Of Aminogut And Diet Formulation Approach On Growth Performance And Economic Return In Nursery Pigs, M. A. Gonçalves, M. D. Tokach, S. S. Dritz, K. Touchette, J. M. Derouchey, J. C. Woodworth, R. D. Goodband
Kansas Agricultural Experiment Station Research Reports
Diets containing animal protein sources have higher levels of glutamine than diets based on plant protein sources. Therefore, the objective of this study was to determine the effects of AminoGut (Ajinomoto Heartland, Inc., Chicago, IL) and protein source (animal vs. plant proteins) on growth performance and economic return in nursery pigs from 12 to 60 lb. AminoGut is a product that contains both glutamine and glutamate. A total of 1,134 pigs (337 × 1050; PIC, Hendersonville, TN, initially 11.6 ± 0.18 lb BW) were used in a 52-d trial. At the beginning of the experiment, pigs were weighed in pens, …
Effect Of Feeding Varying Levels Of Lactobacillus Plantarum On Nursery Pig Performance, A. M. Jones, J. C. Woodworth, J. M. Derouchey, S. S. Dritz, M. D. Tokach, R. D. Goodband
Effect Of Feeding Varying Levels Of Lactobacillus Plantarum On Nursery Pig Performance, A. M. Jones, J. C. Woodworth, J. M. Derouchey, S. S. Dritz, M. D. Tokach, R. D. Goodband
Kansas Agricultural Experiment Station Research Reports
A total of 360 pigs (PIC C-29 × 359, initially 13.1 lb BW) were used in a 42-d growth performance trial evaluating the effects of feeding varying levels of Lactobacillus plantarum on nursery pig performance. Pigs were allotted by BW and sex, and randomly assigned to 1 of 4 dietary treatments in a completely randomized design. Experimental diets were fed in three phases (Phase 1, d 0 to 7; Phase 2, d 7 to 21, and Phase 3, d 21 to 42). Treatment diets were formulated to include 0, 0.05, 0.10, or 0.20%Lactobacillus plantarumproduct (LP1; Nutraferma Inc., Sioux …
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, …
Foreword, Dairy Research 2016, B. Bradford
Foreword, Dairy Research 2016, B. Bradford
Kansas Agricultural Experiment Station Research Reports
Kansas State University is pleased to present the 2016 Dairy Research Report of Progress.
Increasing Estrus Expression In Lactating Dairy Cows, J. A. Sauls, B. E. Voelz, J. Stevenson
Increasing Estrus Expression In Lactating Dairy Cows, J. A. Sauls, B. E. Voelz, J. Stevenson
Kansas Agricultural Experiment Station Research Reports
This report summarizes the use of various hormones in an attempt to induce greater estrus expression of lactating dairy cows. Average detection of estrus (<50%) in most U.S. dairy herds has been identified as a problem limiting reproductive efficiency. Detection of estrus plays an important role in reproductive management in U.S. dairy herds despite the adoption of fixed-time artificial insemination programs. When estrus was detected by an activity monitoring system or a rump-mounted device, supplementing cows with progesterone before induction of luteolysis resulted in greater intensity of estrus when compared with controls. In addition, administering estradiol cypionate at 24 h after induced luteolysis resulted in greater frequency of estrus expression compared with cows treated with testosterone propionate or controls when assessed by an activity monitor. Activity monitoring systems achieved heat-detection rates of approximately 70% (80% with estradiol) and are likely cost effective for herds achieving less than that level of heat detection.
Effects Of Dietary Zinc Source And Level On Mammary Epithelia And Dairy Food Chemistry, J. Shaffer, K. Pandalaneni, L. Mamedova, J. Defrain, J. Amamcharla, B. Bradford
Effects Of Dietary Zinc Source And Level On Mammary Epithelia And Dairy Food Chemistry, J. Shaffer, K. Pandalaneni, L. Mamedova, J. Defrain, J. Amamcharla, B. Bradford
Kansas Agricultural Experiment Station Research Reports
Twelve lactating Holstein cows (132 ± 21 days in milk) were enrolled in a Latin square experiment to explore the extent to which source and amount of supplemental dietary Zn can impact barrier function of mammary epithelial tissue. Cows received either 970 mg supplemental Zn/day as ZnSO4(LS), 1,640 mg supplemental Zn/day as ZnSO4(HS), or 1,680 mg supplemental Zn/day as a mixture of ZnSO4and Zn methionine complex (HC). Treatments lasted for 17 days followed by 4 days of sample collection. Blood and milk were collected and analyzed for markers of blood-milk leak including plasma lactose …
Effects Of Increasing Space Allowance By Removing A Pig Or Gate Adjustment On Finishing Pig Growth Performance, C. Holder, C. Carpenter, M. D. Tokach, J. M. Derouchey, J. C. Woodworth, R. D. Goodband, S. S. Dritz
Effects Of Increasing Space Allowance By Removing A Pig Or Gate Adjustment On Finishing Pig Growth Performance, C. Holder, C. Carpenter, M. D. Tokach, J. M. Derouchey, J. C. Woodworth, R. D. Goodband, S. S. Dritz
Kansas Agricultural Experiment Station Research Reports
A total of 256 pigs (PIC 327 × 1050; initially 123.1 lb) were used in a 71 d growth study to compare the effects of increasing space allowance by removing a pig or gate adjustment, on finishing pig growth performance. At the initiation of the trial, pens of pigs were blocked by BW and allotted to 1 of 4 space allowance treatments. The 4 treatments included: 1) 9.8 ft2/pig or 2) 6.8 ft2/pig for the entire study with treatments 3 and 4 initially providing 6.8 ft2, but either a gate was adjusted or the …
Effects Of Increasing Zn From Zinc Sulfate Or Zinc Hydroxychloride On Finishing Pig Growth Performance, Carcass Characteristics, And Economic Return, C. Carpenter, K. Coble, J. C. Woodworth, J. M. Derouchey, M. D. Tokach, R. D. Goodband, S. S. Dritz, J. Usry
Effects Of Increasing Zn From Zinc Sulfate Or Zinc Hydroxychloride On Finishing Pig Growth Performance, Carcass Characteristics, And Economic Return, C. Carpenter, K. Coble, J. C. Woodworth, J. M. Derouchey, M. D. Tokach, R. D. Goodband, S. S. Dritz, J. Usry
Kansas Agricultural Experiment Station Research Reports
A total of 1,008 pigs [TR4 (Fast × L02 PIC; initially 70.6 lb BW)] were used in a 103-d growth study to determine the effects of Zn source and level on finishing pig growth performance, carcass characteristics, and economic return. The 6 dietary treatments were arranged as a 2 × 3 factorial with main effects of Zn source (ZnSO4; Agrium Advance Technology, Loveland, CO, or Zn hydroxychloride; Intellibond-Z®; Micronutrients, Indianapolis, IN) and level (50, 100, or 150 ppm added Zn). The trace mineral premix was formulated to contain no added Zn. There were 21 pigs per pen and …
Influence Of Glyphosate Timings On Conversion Of Golf Course Rough From Tall Fescue To ‘Sharps Improved Ii’ Buffalograss, J. Reeves, J. Hoyle, D. Bremer, S. Keeley
Influence Of Glyphosate Timings On Conversion Of Golf Course Rough From Tall Fescue To ‘Sharps Improved Ii’ Buffalograss, J. Reeves, J. Hoyle, D. Bremer, S. Keeley
Kansas Agricultural Experiment Station Research Reports
All treatments, except the control that received no glyphosate application, resulted in acceptable buffalograss establishment (>90% buffalograss green cover) by 70 days after seeding (DAS). However, any treatment not sprayed prior to seeding date or that received a 7 DAS application lagged behind in establishment for 6 weeks after seeding.
Evaluating Zoysiagrass-Tall Fescue Mixtures In Kansas, Mingying Xiang, J. Fry, M. Kennelly
Evaluating Zoysiagrass-Tall Fescue Mixtures In Kansas, Mingying Xiang, J. Fry, M. Kennelly
Kansas Agricultural Experiment Station Research Reports
Seeding zoysiagrass at 1 lb PLS/1,000 sq ft in June with subsequent seeding of tall fescue into established zoysiagrass in September at 8 lbs PLS/1,000 sq ft resulted in the best mixture of these two species.
High-Yielding Soybean: Genetic Gain × Fertilizer Nitrogen Interaction, I. A. Ciampitti, J. Kimball, Eric Adee, O. Ortez, G. I. Carmona
High-Yielding Soybean: Genetic Gain × Fertilizer Nitrogen Interaction, I. A. Ciampitti, J. Kimball, Eric Adee, O. Ortez, G. I. Carmona
Kansas Agricultural Experiment Station Research Reports
The U.S. accounts for 35% of the global soybean production. Potential soybean yields are determined by the interaction of genotype, environment, and management practices (G × E × M). The question “Do high yielding soybean need to be fertilized with nitrogen (N)?” is still a valid one. The overall objective of this project is to study the contribution of N via utilization of varying N strategies under historical and current soybean genotypes. Two field experiments were conducted during the 2015 growing season at Ottawa (east central KS) and at Ashland Bottoms (central KS). Three soybeans varieties were used (1990s = …
Evaluating The Interaction Between Chelated Iron Source And Placement On Phosphorus Availability In Soybean, C. L. Edwards, D. Ruiz Diaz
Evaluating The Interaction Between Chelated Iron Source And Placement On Phosphorus Availability In Soybean, C. L. Edwards, D. Ruiz Diaz
Kansas Agricultural Experiment Station Research Reports
In agriculture, chelating agents are used to supplement micronutrients, such as iron (Fe). However, little research has been conducted at the field-scale level to evaluate chelating agent effects on phosphorus (P). The objectives of this study were to evaluate three commercially available chelated Fe sources on early soybean growth and nutrient uptake. The study was conducted at six locations in 2014 and 2015. The experimental design was a randomized, complete block with a factorial treatment arrangement. The two factors included fertilizer source and fertilizer placement. The fertilizer sources were P only, EDTA-Fe, HEDTA-Fe, and one glucoheptonate product, Cee*Quest N5Fe758 (CQ-758), …