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Articles 1 - 30 of 94
Full-Text Articles in Plant Sciences
A Perplexing Process: Understanding How Agricultural Producers Process Best Management Practice Information, Audrey E. H. King, Lauri M. Baker
A Perplexing Process: Understanding How Agricultural Producers Process Best Management Practice Information, Audrey E. H. King, Lauri M. Baker
Journal of Applied Communications
Best management practices (BMPs) are suggested practices that help agricultural producers optimize production while reducing pollution, soil erosion, and other environmental impacts. Many audiences, including scientists and policy makers, have expressed disappointment at the current level of BMP use. Elaboration likelihood model (ELM) is used to understand how people process messages. ELM states that people can process messages either centrally or peripherally. This study sought to understand how producers processed information related to BMP adoption in grazing systems. Researchers conducted qualitative, in-depth interviews with 42 beef-cattle producers in Kansas and Oklahoma. It was found producers process information both centrally and …
Getting What You Want: A Compelling, Reusable, One-Page Message., Martin A. Draper, Betsy B. Draper
Getting What You Want: A Compelling, Reusable, One-Page Message., Martin A. Draper, Betsy B. Draper
Academic Chairpersons Conference Proceedings
Using examples from planning and evaluation, government and business models, presenters will share tactics and strategies for simple, concise communications on important issues. Participants will practice by developing a one-page position paper, briefing paper or decision memo.
Media Portrayal Of Gm Science And Citrus Greening In State And National Newspapers, Jeremy D'Angelo, Jason D. Ellis Ph.D., Katherine Burke Ph.D., Taylor Ruth
Media Portrayal Of Gm Science And Citrus Greening In State And National Newspapers, Jeremy D'Angelo, Jason D. Ellis Ph.D., Katherine Burke Ph.D., Taylor Ruth
Journal of Applied Communications
Huanglongbing (HLB), commonly known as citrus greening, is a bacterial disease severely affecting the profitability and continuation of the citrus industry in Florida and is threatening the citrus industry in other states as well. Currently, the disease only can be managed, not cured. Gene-based therapies, such as GM science, have been identified as a viable long-term solution. However, consumer acceptance of genetically modified food is low and their understanding and acceptance of new technologies is largely dependent on what they receive through mass media. Therefore, the purpose of this research is to understand news coverage of both citrus greening and …
Tillage Study For Corn And Soybeans: Comparing Vertical, Deep, And No-Tillage, E. A. Adee
Tillage Study For Corn And Soybeans: Comparing Vertical, Deep, And No-Tillage, E. A. Adee
Kansas Agricultural Experiment Station Research Reports
Trends from a tillage study conducted since 2011 are beginning to show that corn yields are greater when there is an occasional deep tillage. The yield of soybeans have not been affected significantly by tillage systems ranging from no-till to conventional tillage every year.
Evaluating Large Patch-Tolerant And Cold Hardy Zoysiagrass Germplasm In The Transition Zone, Mingying Xiang, Jack D. Fry, Megan M. Kennelly
Evaluating Large Patch-Tolerant And Cold Hardy Zoysiagrass Germplasm In The Transition Zone, Mingying Xiang, Jack D. Fry, Megan M. Kennelly
Kansas Agricultural Experiment Station Research Reports
AZoysia japonicagenotype, TAES 5645, that exhibited partial resistance to large patch in preliminary studies conducted by our collaborators at Texas A&M University, was used as a breeding parent at Texas A&M and crossed with 22 cold hardy zoysiagrasses, resulting in 2,858 progeny. These progeny were evaluated for cold hardiness and agronomic traits (establishment rate, overall quality, spring green up, leaf texture, and genetic color) in Manhattan, KS; West Lafayette, IN; and Dallas, TX; from 2012 to 2014. This report focuses on the Manhattan, KS, results. From this work, 60 progeny were identified for further evaluation in larger plots. …
Long-Term Nitrogen And Phosphorus Fertilization Of Irrigated Corn, A. Schlegel, H. D. Bond
Long-Term Nitrogen And Phosphorus Fertilization Of Irrigated Corn, A. Schlegel, H. D. Bond
Kansas Agricultural Experiment Station Research Reports
This study was initiated in 1961 to determine responses of continuous corn and grain sorghum grown under flood irrigation to N, P, and potassium (K) fertilization. The study is conducted on a Ulysses silt loam soil with an inherently high K content. No yield benefit to corn from K fertilization was observed in 30 years, and soil K levels remained high, so the K treatment was discontinued in 1992 and replaced with a higher P rate.
Effects Of Supplementation With Corn Or Dried Distillers Grains On Gains Of Heifer Calves Grazing Smooth Bromegrass Pastures, L. W. Lomas, J. L. Moyer
Effects Of Supplementation With Corn Or Dried Distillers Grains On Gains Of Heifer Calves Grazing Smooth Bromegrass Pastures, L. W. Lomas, J. L. Moyer
Kansas Agricultural Experiment Station Research Reports
Distillers grains, a by-product of the ethanol industry, have tremendous potential as an economical and nutritious supplement for grazing cattle. Distillers grains contain a high concentration of protein (25 to 30%), with more than two-thirds escaping degradation in the rumen, which makes it an excellent supplement for younger cattle. Recent advancements in the ethanol manufacturing process have resulted in extraction of a greater amount of fat; therefore, creating distillers grains that may contain less energy than corn. This research was conducted to compare performance of stocker cattle supplemented with corn or DDG at 0.5% body weight per head daily while …
Response Of Soybean Grown On A Claypan Soil In Southeastern Kansas To The Residual Of Different Plant Nutrient Sources And Tillage, D. W. Sweeney, Philip Barnes, Gary Pierzynski
Response Of Soybean Grown On A Claypan Soil In Southeastern Kansas To The Residual Of Different Plant Nutrient Sources And Tillage, D. W. Sweeney, Philip Barnes, Gary Pierzynski
Kansas Agricultural Experiment Station Research Reports
Increased fertilizer prices in recent years, especially noticeable when the cost of phosphorus spiked in 2008, have led U.S. producers to consider other alternatives, including manure sources. The use of poultry litter as an alternative to fertilizer is of particular interest in southeastern Kansas because large amounts of poultry litter are imported from nearby confined animal feeding operations in Arkansas, Oklahoma, and Missouri. Annual application of turkey litter can affect the current crop, but information is lacking concerning any residual effects from several continuous years of poultry litter applications on a following crop. This is especially true for tilled soil …
Soil Health Profile In Claypan Soils, C. J. Hsiao, G. F. Sassenrath, C. Rice, G. Hettiarachchi, L. Zeglin
Soil Health Profile In Claypan Soils, C. J. Hsiao, G. F. Sassenrath, C. Rice, G. Hettiarachchi, L. Zeglin
Kansas Agricultural Experiment Station Research Reports
Healthy soil is the foundation of a sustainable agronomic production system. Microorganisms include bacteria (such as actinomycetes), fungi, and protozoa. Soil microorganisms, or microbes, exist in large numbers in soils and are critical for decomposition of organic residues and nutrient recycling. Soils with ample and diverse microbial populations can provide more essential nutrients for crop growth and development. Soil microbial properties are considered one of the major indicators of soil health.
Soil microbial properties can be measured by the activity and the composition of micro-organism populations. Phospholipid fatty acids (PLFA) are the primary components of cell membranes, they can be …
Growth, Forage Quality, And Economics Of Cover Crop Mixes For Grazing, J. K. Farney, G. F. Sassenrath, C. Davis, Deann Presley
Growth, Forage Quality, And Economics Of Cover Crop Mixes For Grazing, J. K. Farney, G. F. Sassenrath, C. Davis, Deann Presley
Kansas Agricultural Experiment Station Research Reports
Cover crops offer many potential benefits to crop production. They diversify the plant system, increase soil organic matter, and reduce erosion. However, they can be expensive to plant. By grazing the cover crops, farmers can recover some of the expenses associated with growing cover crops. Grazing also increases the nutrients to the field, further enhancing the productive capacity of the soil.
Many cover crop mixtures are currently available on the market. However, it is not clear how useful the multi-species cover crops mixtures are, or their potential impact on economics of production. Moreover, many of the cover crop mixes being …
Research Center Personnel, Acknowledgments, L. W. Lomas
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.
Precipitation Data, M. Knapp
Precipitation Data, M. Knapp
Kansas Agricultural Experiment Station Research Reports
Precipitation for the 2016-2017 growing seasons for experiment stations in Kansas.
Herbicide And Application Timing Effects On Windmillgrass Control, Nicholas Mitchell, Jared Hoyle
Herbicide And Application Timing Effects On Windmillgrass Control, Nicholas Mitchell, Jared Hoyle
Kansas Agricultural Experiment Station Research Reports
Windmillgrass (Chloris verticillataNutt.) populations commonly infest turfgrass systems in the midwest, which result in aesthetically unacceptable turfgrass stands. Research trials were initiated in 2017 in Onaga and Junction City, KS, to determine windmillgrass control with various single herbicide applications at multiple application timings (spring, summer, and fall). Data collection for research trials consisted of visual percent windmillgrass cover (0–100%), line intersect analysis on four-inch spacing, normalized difference vegetation index (NDVI) (0 to 1 scale), and windmillgrass seedhead counts. Initial observations resulted in greater windmillgrass control with summer applications compared to fall applications. Pylex (topramezome) resulted in 80% windmillgrass …
Urban Lawn Microclimates Affect Reference Evapotranspiration, Kenton W. Peterson, Dale J. Bremer, Jack D. Fry
Urban Lawn Microclimates Affect Reference Evapotranspiration, Kenton W. Peterson, Dale J. Bremer, Jack D. Fry
Kansas Agricultural Experiment Station Research Reports
Grass reference evapotranspiration (ETo) obtained from weather stations in open locations is often used to estimate irrigation requirements of turfgrass in local or regional urban lawns. However, the environments of urban lawns are often altered by surrounding buildings, trees, etc., to form various microclimates that may alter evapotranspiration (ET). Our research, which placed weather stations in urban lawns and nearby open swards of turfgrass, revealed ETowas 41% lower in residential lawn microclimates than in nearby open turfgrass swards. Less ET within urban lawns than in nearby open swards suggests using standard historical weather data to estimate …
2012 National Turfgrass Evaluation Program Tall Fescue Test: 2012–2017 Summary Report, Linda R. Parsons, Michael J. Shelton, Megan M. Kennelly, Jason J. Griffin, Jared A. Hoyle
2012 National Turfgrass Evaluation Program Tall Fescue Test: 2012–2017 Summary Report, 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 throughout the course of the study.
2013 National Turfgrass Evaluation Program Bermudagrass Test: 2017 Data, Linda R. Parsons, Michael J. Shelton, Jason J. Griffin, Jared A. Hoyle
2013 National Turfgrass Evaluation Program Bermudagrass Test: 2017 Data, Linda R. Parsons, Michael J. Shelton, Jason J. Griffin, Jared A. Hoyle
Kansas Agricultural Experiment Station Research Reports
Kansas represents the northernmost region in the central United States where bermudagrass can be successfully grown as a perennial turfgrass. Historically, few cultivars that have both acceptable quality and adequate cold tolerance have been available to local growers. Because new introductions are continually being selected for improved hardiness and quality, both seeded and vegetative types need regular evaluation to determine their long-range suitability for use in Kansas.
Effect Of Late Nitrogen Applications On Grain Filling In Corn, J. A. Fernandez, I. A. Ciampitti
Effect Of Late Nitrogen Applications On Grain Filling In Corn, J. A. Fernandez, I. A. Ciampitti
Kansas Agricultural Experiment Station Research Reports
In order to evaluate the effect of nitrogen (N) with late-season fertilizer applications in corn, grain yield and grain filling parameters were evaluated for three genotypes under three N levels. Hybrids with different release years (3394, 1990s; P1151, 2000s; and P1197, 2016) and contrasting N application scenarios (zero-N, N at flowering, and N two weeks after flowering) were evaluated in two studies (dryland and irrigated) at the Ashland Bottoms Research Farm, Manhattan, KS, 2017 season. Results showed that under N stress conditions, the absence of N fertilization in corn significantly reduced yields, by affecting both grain number (GN) and grain …
Effect Of Management Practices On Double-Crop Soybean Yields, D. S. S. Hansel, J. Kimball, D. E. Shoup, I. A. Ciampitti
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
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 …
Palmer Amaranth Populations From Kansas With Multiple Resistance To Glyphosate, Chlorsulfuron, Mesotrione, And Atrazine, V. Kumar, P. W. Stahlman, G. Boyer
Palmer Amaranth Populations From Kansas With Multiple Resistance To Glyphosate, Chlorsulfuron, Mesotrione, And Atrazine, V. Kumar, P. W. Stahlman, G. Boyer
Kansas Agricultural Experiment Station Research Reports
Multiple herbicide-resistant (MHR) Palmer amaranth poses a serious management concern for growers across the United States. Since 2014, several Palmer amaranth populations with suspected resistance to most commonly used herbicides were collected in random field surveys across Kansas. This study aimed to characterize the resistance levels to glyphosate (EPSPS inhibitor), mesotrione (HPPD inhibitor), chlorsulfuron (ALS inhibitor), and atrazine (PS II inhibitor) in three suspected MHR Palmer amaranth populations (KW2, PR8, and BT12) compared to a known herbicide-susceptible (SUS) population. Dose-response studies revealed that PR8 and BT12 populations had 7- to 14-fold level resistance to glyphosate, and up to 12-fold level …
Wheat Development And Yield As Affected By Era Of Variety Release And In-Furrow Fertilizer, R. E. Maeoka, R. P. Lollato
Wheat Development And Yield As Affected By Era Of Variety Release And In-Furrow Fertilizer, R. E. Maeoka, R. P. Lollato
Kansas Agricultural Experiment Station Research Reports
Nutrients play a major role in wheat yield determination; however, limited information exists on the differential responses of historical and modern varieties to in-furrow fertilizer. Our objectives were to estimate grain yield and differences in agronomic traits of historical and modern winter wheat varieties as affected by different fertilization programs. Two field trials were established during the growing season 2016–2017 (i.e., Ashland Bottoms and Belleville, KS). Seven winter wheat varieties released between 1920 and 2016–Kharkof (1920), Scout 66 (1966), Karl 92 (1988), Jagalene (2001), Fuller (2006), KanMark (2014), and Larry (2016)–were sown using one of two different fertilizer practices: either …
Wheat Variety Response To Seeding Rate In Kansas During The 2015–2016 And 2016– 2017 Growing Seasons, R. P. Lollato, G. Zhang, B. R. Jaenisch, R. Maeoka, L. Bonassi, A. K. Fritz
Wheat Variety Response To Seeding Rate In Kansas During The 2015–2016 And 2016– 2017 Growing Seasons, R. P. Lollato, G. Zhang, B. R. Jaenisch, R. Maeoka, L. Bonassi, A. K. Fritz
Kansas Agricultural Experiment Station Research Reports
Plant density is among the major factors determining a crop’s ability to capture resources such as water, nutrients, and solar radiation; therefore, different wheat varieties might require different seeding densities to maximize yield. The objective of this project was to better understand the response of different wheat varieties to seeding rate. Two field experiments were conducted during 2015–2016 and repeated during 2016–2017, evaluating seven wheat varieties subjected to five different seeding rates (0.6, 0.95, 1.3, 1.65, and 2.0 million seeds/a). Crop was managed for a 70 bu/a yield goal and pests were controlled using commercially available pesticides. Final stand and …
Plant Population And Fungicide Treatment Reduce Winter Wheat Yield Gap In Kansas, B. R. Jaenisch, R. P. Lollato
Plant Population And Fungicide Treatment Reduce Winter Wheat Yield Gap In Kansas, B. R. Jaenisch, R. P. Lollato
Kansas Agricultural Experiment Station Research Reports
Despite the large winter wheat yield gap in Kansas, limited research is available on integrated agronomic practices to increase grain yield. Our objective was to quantify the contribution of individual and combined management practices to reduce wheat yield gap. An incomplete factorial treatment structure established in a randomized complete block design was conducted in three locations in Kansas during 2016–2017 to evaluate the impacts of 14 treatments on yield and grain protein concentration of the modern wheat variety ‘Everest.’ We individually added six treatments to a low-input standard control or removed from a high-input intensive control, which received all treatments. …
Weather Information For Garden City, 2017, J. Elliott
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.
Determining Profitable Forage Rotations, J. D. Holman, A. Obour, A. Schlegel, T. Roberts, S. Maxwell
Determining Profitable Forage Rotations, J. D. Holman, A. Obour, A. Schlegel, T. Roberts, S. Maxwell
Kansas Agricultural Experiment Station Research Reports
Annual forages are an important crop in the High Plains, yet the region lacks recommended annual forage rotations compared to those developed for grain crops. Forages are important for the region’s livestock and dairy industries and are becoming increasingly important as irrigation capacity and grain prices decrease. Forages require less water than grain crops and may allow for increased cropping system intensity and opportunistic cropping. A study was initiated in 2012 at the Southwest Research-Extension Center near Garden City, KS, comparing several 1-, 3-, and 4-year forage rotations with no-tillage and minimum-tillage. Data presented are from 2013 through 2017. Tillage …
Alternative Cropping Systems With Limited Irrigation, A. Schlegel
Alternative Cropping Systems With Limited Irrigation, A. Schlegel
Kansas Agricultural Experiment Station Research Reports
A limited irrigation study involving four cropping systems and evaluating four crop rotations was initiated at the Southwest Research-Extension Center near Tribune, KS, in 2012. The cropping systems were two annual systems (continuous corn [C-C] and continuous grain sorghum [GS-GS]) and two 2-year systems (corn- grain sorghum [C-GS]) and corn-winter wheat [C-W]). In 2017, corn yields were greatest in the corn-wheat rotation and least with continuous corn. Grain sorghum yields were greater following sorghum than following corn. The wheat was destroyed by a severe infestation of wheat streak mosaic virus and not harvested.
Value Of Fungicide Application In Wheat Production In Southwest Kansas, 2017 Report, A. J. Foster, R. Lollato, M. Vandeveer, E. D. De Wolf, R. Currie
Value Of Fungicide Application In Wheat Production In Southwest Kansas, 2017 Report, A. J. Foster, R. Lollato, M. Vandeveer, E. D. De Wolf, R. Currie
Kansas Agricultural Experiment Station Research Reports
During the past several years, applying fungicide to wheat has become a more common practice. The availability of cost-effective generic fungicides, as well as the positive yield responses often reported, seem to be the potential drivers for the adoption of such practices by producers. A wheat fungicide trial was conducted in Garden City, KS, to answer the following questions: 1) Are fungicide applications profitable? and 2) Can remote sensing technology be used to quantify the efficacy of different fungicide products? The study consisted of two wheat varieties sown on September 30, 2016 (Oakley CL, highly resistant to stripe rust; and …
Tillage Intensity In A Long-Term Wheat-Sorghum-Fallow Rotation, A. Schlegel
Tillage Intensity In A Long-Term Wheat-Sorghum-Fallow Rotation, A. Schlegel
Kansas Agricultural Experiment Station Research Reports
Grain yields of wheat and grain sorghum increased with decreased tillage intensity in a wheat-sorghum-fallow (WSF) rotation. In 2016, available soil water at wheat and sorghum planting was greater for reduced till (RT) than no-till (NT) and least for conventional till (CT). Averaged across the 16-yr study, available soil water at wheat and sorghum planting was similar for RT and NT and about 1 inch greater than CT. Averaged across the past 16 years, NT wheat yields were 4 bu/a greater than RT and 7 bu/a greater than CT. Grain sorghum yields in 2016 were 15 bu/a greater with long-term …
Seeding Rate For Dryland Wheat, A. Schlegel, J. D. Holman, L. Haag
Seeding Rate For Dryland Wheat, A. Schlegel, J. D. Holman, L. Haag
Kansas Agricultural Experiment Station Research Reports
Four winter wheat varieties (PlainsGold Byrd, Limagrain T158, Syngenta TAM 111, and WestBred Winterhawk) were planted at five seeding rates (30, 45, 60, 75, and 90 lb/a) in the fall of 2014, 2015, and 2016 at Colby, Garden City, and Tribune, KS. The objective of the study is to identify appropriate seeding rates for dryland winter wheat in western Kansas. Averaged across varieties, a seeding rate of 60 lb/a seemed to be adequate at all locations in 2015. However, with higher yields in 2016, a higher seeding rate (75 lb/a) was beneficial. Although yields were less in 2017 than 2016, …
Forage Type And Maturity Effects On Yield And Nutritive Value, J. D. Holman, A. Obour, T. Roberts, S. Maxwell
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.