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Articles 91 - 120 of 945
Full-Text Articles in Life Sciences
High Yielding Corn Production With Subsurface Drip Irrigation, F. R. Lamm
High Yielding Corn Production With Subsurface Drip Irrigation, F. R. Lamm
Kansas Agricultural Experiment Station Research Reports
This corn intensification study was conducted under subsurface drip irrigation (SDI) from 2017 to 2021 at the Kansas State University Northwest Research-Extension Center near Colby, KS. Two corn hybrids (Pioneer 1151 and Pioneer 11197) were grown with advanced fertilization at three plant densities (42,000, 38,000, and 34,000 plants/a) using three irrigation levels (115, 100, or 85% of calculated well-watered ET minus rain). Average yields were 259, 257, and 254 bu/a for the 115, 100, and 85% ET - Rain irrigation levels respectively, indicating that irrigation does not have to increase with crop intensification when using SDI. Both corn hybrids yielded …
Assure Ii Alone And With Tacoma And Classic For Efficacy In Fallow, R. S. Currie, P. W. Geier
Assure Ii Alone And With Tacoma And Classic For Efficacy In Fallow, R. S. Currie, P. W. Geier
Kansas Agricultural Experiment Station Research Reports
The objective of this trial was to compare Assure II (quizalofop) at two rates with or without tank mix partners for grass control in fallow. Assure II at either rate alone provided similar control of volunteer corn and barley. Corn control was 90% or more regardless of rating date with all herbicides except Assure II at 8.0 oz/a plus Classic (chlorimuron) at 42 days after treatment (DAT). Tacoma (fenoxaprop) at 3.5 or 5.4 oz/a added to Assure II at 8.0 oz/a improved barley control later in the season.
Katagon At Two Timings Compared To Standards In Corn, R. S. Currie, P. W. Geier
Katagon At Two Timings Compared To Standards In Corn, R. S. Currie, P. W. Geier
Kansas Agricultural Experiment Station Research Reports
The objective of this trial was to compare Katagon (tolpyralate/nicosulfuron) to standard treatments for weed control in corn. Katagon plus atrazine applied early postemergence was as effective as any herbicide tested on the weeds present. When application timing was delayed to late postemergence, most herbicides were less effective. Early season corn injury was minor and did not persist. Although most herbicide treatments increased yields relative to the non-treated control, yields were generally best when any treatment was applied early postemergence.
Nitrogen Fertilization And Wheat Variety Interact With Environment Independently To Determine Wheat Yield In Kansas, N. Giordano, R. P. Lollato
Nitrogen Fertilization And Wheat Variety Interact With Environment Independently To Determine Wheat Yield In Kansas, N. Giordano, R. P. Lollato
Kansas Agricultural Experiment Station Research Reports
Both nitrogen (N) management and variety selection are crucial elements that influence wheat yield; however, there is limited research exploring whether wheat varieties differ in their response to N rate. Thus, our objectives were to determine potential variety by N rate interactions among modern winter wheat varieties. Factorial field experiments were established in four Kansas locations during the 2020–2021 growing season, including two fields near Ashland Bottoms, one field near Hutchinson, and one near Manhattan. Whole plot treatments were four N rates (0, 40, 80, and 120 lb N/a) applied in the spring and subplots were 14 commercially available winter …
Environment And Nitrogen Rate Play Significant Roles In Winter Wheat Response To Nitrogen Management Intensification, L. M. Simão, D. A. Ruiz Diaz, R. P. Lollato
Environment And Nitrogen Rate Play Significant Roles In Winter Wheat Response To Nitrogen Management Intensification, L. M. Simão, D. A. Ruiz Diaz, R. P. Lollato
Kansas Agricultural Experiment Station Research Reports
Poor nitrogen (N) management is among the leading causes of winter wheat (Triticum aestivumL.) yield gaps in Kansas, and sowing date—which is impacted by crop rotation—is among the most important variables determining winter wheat’s attainable yields in the U.S. central Great Plains. This research aimed to investigate the relationship between N management strategies and various cropping systems in Kansas. The treatments consisted of nine combinations of three N management practices (standard, progressive, and green N) and five crop sequences (WtWt = continuous winter wheat; SyWt = winter wheat after soybean; TrSyWt = triticale (hay) – soybean – winter …
Interseeding Sorghum-Sudangrass Into Perennial Cool-Season Western Wheatgrass Pasture, Keith Harmoney, John Guretzky
Interseeding Sorghum-Sudangrass Into Perennial Cool-Season Western Wheatgrass Pasture, Keith Harmoney, John Guretzky
Kansas Agricultural Experiment Station Research Reports
Conversion of pastureland into cropland has occurred at a rapid rate on the Great Plains. A reduction in total acreage of pastureland from this conversion has resulted in a decline of total numbers of beef cows in the same region. One method to mitigate the decline in cow numbers is to increase the carrying capacity of the remaining pastureland acres. To achieve this goal, a study was conducted to introduce warm-season annual grass species into perennial cool-season grass pastures to increase dry matter production during the mid-summer time period that perennial cool-season grasses would be most dormant. An increase in …
Fertilization Management To Improve Stockpiled Tall Fescue In The Fall, B. C. Pedreira, D. Helwig, M. Haywood, J. K. Farney, G. Sassenrath
Fertilization Management To Improve Stockpiled Tall Fescue In The Fall, B. C. Pedreira, D. Helwig, M. Haywood, J. K. Farney, G. Sassenrath
Kansas Agricultural Experiment Station Research Reports
In 2019 and 2021, a tall fescue fertility study was conducted at the K-State Experiment Station near Columbus, KS. The purpose of the study was to determine the effect of summer fertilization on forage quality and quantity in stockpiled fescue. If a producer can stockpile high-quality forage for late fall and early winter grazing, protein supplementation may not be necessary for fall calving cows.
Field Station Weather Reports, E. Adee, M. Sittel
Field Station Weather Reports, E. Adee, M. Sittel
Kansas Agricultural Experiment Station Research Reports
This report includes the annual summary of precipitation from 2021 at the research locations represented in the 2022 field report and further details about the Kansas River Valley locations and the east central Kansas locations.
Wheat Yield Response To Nitrogen Rate Depends On Foliar Fungicide Application, R. P. Lollato, L. O. Pradella, N. Giordano, L. Ryan, L. M. Simão, J. R. Soler
Wheat Yield Response To Nitrogen Rate Depends On Foliar Fungicide Application, R. P. Lollato, L. O. Pradella, N. Giordano, L. Ryan, L. M. Simão, J. R. Soler
Kansas Agricultural Experiment Station Research Reports
Nitrogen (N) and fungicide are among the most important factors impacting wheat yields in Kansas. However, there is limited information on whether foliar fungicides interact with N rates in wheat yield determination. Thus, our objectives were to evaluate wheat yield as impacted by different N rates with or without the use of foliar fungicide. One field experiment was established using a factorial structure of five N rates (0, 30, 60, 90, and 120 pounds of N per acre) by two fungicide management practices (either absent or 13 fluid ounces per acre of Nexicor) in a split-plot design near Hutchinson, KS, …
Tillage Study For Corn And Soybeans: Comparing Vertical, Deep, And No-Tillage, E. Adee
Tillage Study For Corn And Soybeans: Comparing Vertical, Deep, And No-Tillage, E. Adee
Kansas Agricultural Experiment Station Research Reports
Trends from a tillage study conducted since 2011 have shown no clear differences between tillage systems for either corn or soybeans in lighter soils under irrigation. One year out of eight years has shown a yield advantage for either corn or soybeans for any tillage system, which appears to be related to environmental conditions experienced during the season. Averaged across all years of the study, the treatments with deep tillage either every or every-other year had about 4.5% higher corn yields, and soybeans had up to a 3.2% yield increase with some form of tillage.
Comparing Zoysia Experimental Genotypes Developed By Kansas State University, Texas A&M, And Purdue To Meyer In The National Turfgrass Evaluation Program Test, Jack D. Fry, Dani Mcfadden
Comparing Zoysia Experimental Genotypes Developed By Kansas State University, Texas A&M, And Purdue To Meyer In The National Turfgrass Evaluation Program Test, Jack D. Fry, Dani Mcfadden
Kansas Agricultural Experiment Station Research Reports
The National Turfgrass Evaluation Program (NTEP) Zoysia Test was planted in 2019 at the Kansas State University Olathe Horticulture Center, Olathe, KS. Since planting, three experimental genotypes developed at Kansas State University (with cooperators noted below) have outperformed ‘Meyer’ in establishment rate, turf quality, drought tolerance, and fall color. Earlier research has demonstrated large patch tolerance in all three experimental genotypes.
Using Cover Crops To Control Weeds And Improve Soil Health, J. Dille, A. Hewitt, G. Sassenrath
Using Cover Crops To Control Weeds And Improve Soil Health, J. Dille, A. Hewitt, G. Sassenrath
Kansas Agricultural Experiment Station Research Reports
Herbicide-resistant weeds are challenging for producers to control in crop fields. This study explores the potential of cover crops to reduce weed pressure and improve soil health. Cover crops that had good canopy development, including grasses such as ryegrass and wheat, had the best weed control. Soybean yields were similar for all cover crops, though there was a trend towards lower yields for the brassica cover crops, Graza radish and forage collards. Soybeans grown after ryegrass had the highest yields.
Weather Information For Garden City, 2021, E. Russell
Weather Information For Garden City, 2021, E. Russell
Kansas Agricultural Experiment Station Research Reports
Summary of 2021 weather for research conducted at the Garden City Kansas Agricultural Experiment Station field location.
Industrial Weed Control With Plainview, Esplanade, And Method Application Timings, R. S. Currie, P. W. Geier
Industrial Weed Control With Plainview, Esplanade, And Method Application Timings, R. S. Currie, P. W. Geier
Kansas Agricultural Experiment Station Research Reports
The objective of this trial was to compare Plainview, Esplanade, and Method at three applications for season-long weed control in noncropland. Glyphosate alone provided no residual weed control. Plainview (indaziflam/aminocyclopyrachlor/imazapyr) at 64 oz/a applied in the early or late fall controlled kochia similarly to Krovar (bromacil/ diuron) late in the season. Either rate of Plainview, as well as the tank mixture of Esplanade (aminocyclopyrachlor) plus Method (indaziflam), provided complete woollyleaf bursage control regardless of application timing. No treatment of Krovar controlled woollyleaf bursage more than 60%.
2022 Kansas Fertilizer Research Report
2022 Kansas Fertilizer Research Report
Kansas Agricultural Experiment Station Research Reports
A summary of research conducted in 2018-2021 on fertilizer use and management practices for crops in Kansas. Published in 2022 from the Kansas State University Agricultural Experiment Station and Cooperative Extension Service
https://www.ag.k-state.edu/.
Comparison Of Sensitivity To Fusarium Head Blight In Soft Red And Hard Red Winter Wheat Varieties, G. Sassenrath, K. Andersen Onofre, J. Lingenfelser, X. Lin
Comparison Of Sensitivity To Fusarium Head Blight In Soft Red And Hard Red Winter Wheat Varieties, G. Sassenrath, K. Andersen Onofre, J. Lingenfelser, X. Lin
Kansas Agricultural Experiment Station Research Reports
Fusarium head blight (scab) is a problem for wheat production in high rainfall areas. This is a report of research examining the response of wheat varieties on disease susceptibility and wheat yield and quality. Hard red wheat varieties had more disease than the soft red wheat varieties in 2021. Wheat yield was correlated with disease severity.
2021 Creeping Bentgrass Putting Green National Turfgrass Evaluation Program Trial, Dani Mcfadden, Jack D. Fry
2021 Creeping Bentgrass Putting Green National Turfgrass Evaluation Program Trial, Dani Mcfadden, Jack D. Fry
Kansas Agricultural Experiment Station Research Reports
Creeping bentgrass (Agrostis stoloniferaL.) is the most common cool-season grass used for putting surfaces in Kansas and other temperate regions of the world. Fine-textured and high-density cultivars (‘Penn A-1’, ‘Penn A-2’, and ‘Penn A-4’) released in the late 1990s are widely accepted throughout the transition zone. However, new cultivars with attractive characteristics continue to be selected, evaluated, and introduced to determine their long-term suitability for Kansas.
Simulation Of Nitrous Oxide Emissions In Zoysia Turfgrass Using Daycent And Dndc Ecosystem Models, Mu Hong, Yao Zhang, Ross Braun, Dale J. Bremer
Simulation Of Nitrous Oxide Emissions In Zoysia Turfgrass Using Daycent And Dndc Ecosystem Models, Mu Hong, Yao Zhang, Ross Braun, Dale J. Bremer
Kansas Agricultural Experiment Station Research Reports
Nitrous oxide (N2O) is an important greenhouse gas (GHG) implicated in global climate change. Process-based ecosystem models, such as DAYCENT and DNDC, have been widely used to predict GHG fluxes in agricultural systems. However, neither model has yet been applied to warm-season turfgrasses such as zoysiagrass. This study parameterized, calibrated, and validated the DAYCENT and DNDC models for N2O emissions from Meyer zoysiagrass (Zoysia japonicaSteud.) using Bayes’ theorem and field data from Braun and Bremer (2018a, 2019) and Lewis and Bremer (2013). Results indicated DAYCENT, but not DNDC, reasonably simulated the impacts of irrigation …
Understanding The Perceptions Of Producers Regarding The Ogallala Aquifer Use: A Survey Report (2022), Jonathan Aguilar, Amariah Fischer, Matthew R. Sanderson
Understanding The Perceptions Of Producers Regarding The Ogallala Aquifer Use: A Survey Report (2022), Jonathan Aguilar, Amariah Fischer, Matthew R. Sanderson
Kansas Agricultural Experiment Station Research Reports
This survey asked producers in the Ogallala aquifer how they view their role in groundwater use, what they see as the consequences of groundwater depletion, and why they believe groundwater should be conserved. Producers were also asked about their worldviews and values. Together, these questions help provide an understanding of the cultural state of the Ogallala aquifer, especially as it pertains to groundwater use.
Efficient Irrigation Technologies For Corn—A Comparison, F. R. Lamm, D. M. O'Brien
Efficient Irrigation Technologies For Corn—A Comparison, F. R. Lamm, D. M. O'Brien
Kansas Agricultural Experiment Station Research Reports
This study was conducted from 2016–2021 at the Kansas State University Northwest Research-Extension Center near Colby, KS. Two irrigation systems, subsurface drip irrigation (SDI) and mobile drip irrigation (MDI) were compared for two irrigation capacities equivalent to 0.25 in./day and 0.167 in./day. Irrigation amounts were similar for the two systems when comparing the equivalent capacities, averaging 13.3 and 11.4 inches per acre. When averaged over the six-year period, SDI and MDI corn grain yields were 242.5 and 239.2 bu/a, respectively. Although irrigation amounts for the two systems at an equivalent irrigation capacity were similar, total crop water use was less …
Crop Assurance Strategies For Irrigated Grain Sorghum Production, F. R. Lamm
Crop Assurance Strategies For Irrigated Grain Sorghum Production, F. R. Lamm
Kansas Agricultural Experiment Station Research Reports
This sprinkler-irrigated study was conducted from 2018 to 2021 at the Kansas State University Northwest Research-Extension Center near Colby, KS, to evaluate four different water management strategies that could provide assurance of adequateyielding grain sorghum. The grain sorghum was grown on sites with good initial soil water at planting (>70% of field capacity within the 8-ft deep silt loam profile). Strategies were 1) No seasonal irrigation; 2) Irrigation of 100% of ET minus Rain after the boot stage through remainder of season; 3) Irrigation of 100% of ET minus Rain up to a limit of 6 inches; and 4) …
Single And Split Herbicide Applications For Efficacy In Corn, R. S. Currie, P. W. Geier
Single And Split Herbicide Applications For Efficacy In Corn, R. S. Currie, P. W. Geier
Kansas Agricultural Experiment Station Research Reports
The objective of this study was to compare season-long weed control from single and sequential herbicide applications in corn. Control of all weed species was generally good (90% or more) early in the season regardless of preemergence (PRE) herbicide. However, Russian thistle and Palmer amaranth control was best later in the season when a PRE herbicide was followed by a postemergence (POST) treatment. While all herbicide treatments increased yields compared to the untreated control, yields were greatest when Lumax EZ PRE (atrazine/mesotrione/metolachlor) was followed by Acuron (atrazine/bicyclopyrone/mesotrione/metolachlor) and glyphosate POST.
Pyraflufen Tank Mixtures For Efficacy In Fallow, R. S. Currie, P. W. Geier
Pyraflufen Tank Mixtures For Efficacy In Fallow, R. S. Currie, P. W. Geier
Kansas Agricultural Experiment Station Research Reports
The objective of this study was to compare Vida (pyraflufen) tank mixtures for glyphosate- resistant kochia control in fallow. Early-season kochia control was best with tank mixtures that included Sharpen (saflufenacil), but tank mixtures including dicamba provided the best control later in the season. No herbicide controlled kochia more than 80% late in the season. All herbicides controlled downy brome more than 90% within 14 days after treatment, and 100% by 21 days after application.
Comparison Of Mehlich-3 And Dtpa Soil Tests For Analysis Of Micronutrients In Kansas Soils, B. Rutter, D. A. Ruiz Diaz, L. Hargrave
Comparison Of Mehlich-3 And Dtpa Soil Tests For Analysis Of Micronutrients In Kansas Soils, B. Rutter, D. A. Ruiz Diaz, L. Hargrave
Kansas Agricultural Experiment Station Research Reports
Mehlich-3 (M3) was designed as a multi-nutrient soil test procedure and has become common at soil testing labs across the U.S. In Kansas, Mehlich-3 is predominately used as a soil test for phosphorus (P) and potassium (K), but recent studies have also investigated the use of M3 for the extraction of base cations and cation exchange capacity estimation. However, data relating M3 to traditional methods for soil micronutrient extraction remain scarce. The objective of this study was to investigate the relationship between M3 and diethylenetriamine pentaacetate (DTPA) extractable copper (Cu), iron (Fe), manganese (Mn), and zinc (Zn) across a wide …
2021 Fertilizer Weather Station Report, M. Sittel
2021 Fertilizer Weather Station Report, M. Sittel
Kansas Agricultural Experiment Station Research Reports
This report includes the annual summary of precipitation and temperatures from 2021 at the research locations represented in the 2022 fertilizer report.
Stocker Steer Gains And Fly Numbers As Impacted By Burn Date And Type Of Mineral On Tallgrass Native Range – Year 3, J. K. Farney, M. Frahm
Stocker Steer Gains And Fly Numbers As Impacted By Burn Date And Type Of Mineral On Tallgrass Native Range – Year 3, J. K. Farney, M. Frahm
Kansas Agricultural Experiment Station Research Reports
This study aims to evaluate effectiveness of two operational management systems for steer gains and fly control. The first strategy evaluated was pasture burn date of March (MAR) or April (APR). The second management strategy was free-choice mineral with spices (SPICE) or without spices (CON). Eight pastures (n = 281 steers; initial weight 572 ± 75 lb) were used in a 2 × 2 factorial treatment structure. Steers were weighed individually, randomly assigned to treatment, and grazed for 87 days. Weekly, 33% of steers were photographed to count flies and evaluated for hair coat score. Neither the date of pasture …
Evaluation Of Implants, Clover, And Fescue Variety On Stocker Steers – Year 2, J. K. Farney, M. Frahm, S. Strnad, T. Bottorff
Evaluation Of Implants, Clover, And Fescue Variety On Stocker Steers – Year 2, J. K. Farney, M. Frahm, S. Strnad, T. Bottorff
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 the implant level. 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, or Ralgro). Data collected were weights, hair coat scores, hair length, rectal temperature (every 28 days), and ultrasound carcass characteristics when steers were coming off grass. Steers on High Endophyte had the lowest average daily …
Impact Of Fertility And Mowing On Crabgrass Quantity And Quality For Hay Production In Southeast Kansas, B. C. Pedreira, D. Helwig, M. Haywood, J. K. Farney, G. Sassenrath
Impact Of Fertility And Mowing On Crabgrass Quantity And Quality For Hay Production In Southeast Kansas, B. C. Pedreira, D. Helwig, M. Haywood, J. K. Farney, G. Sassenrath
Kansas Agricultural Experiment Station Research Reports
A crabgrass variety trial comparing Quick-N-Big and Mojo crabgrasses was conducted in 2021 at the K-State Experiment Station outside of Columbus, KS. The trial evaluated forage quantity and quality under different fertilization and harvest management practices.
Crop Production Summary - 2021, G. Sassenrath, L. Mengarelli, J. Lingenfelser, M. Knapp, X. Lin
Crop Production Summary - 2021, G. Sassenrath, L. Mengarelli, J. Lingenfelser, M. Knapp, X. Lin
Kansas Agricultural Experiment Station Research Reports
Soybean and corn varieties were tested in replicated field trials at the Southeast Research and Extension Center in Parsons through the Kansas State University variety testing program. In total, 26 corn varieties and 28 soybean varieties were tested. Weather during 2021 was near average for both rainfall and temperature, though there were periods of high rainfall and high temperatures. Corn and soybean production was also near average, both across the state and in the cultivar trials at Parsons.
Wheat Variety Test Results For South Central Kansas - 2021, J. Seiler, R. Hein, R. Flaming, J. Carr, K. Nordyke, R. Lollato, B. C. Pedreira
Wheat Variety Test Results For South Central Kansas - 2021, J. Seiler, R. Hein, R. Flaming, J. Carr, K. Nordyke, R. Lollato, B. C. Pedreira
Kansas Agricultural Experiment Station Research Reports
South central Kansas is an important winter wheat production area in the state. This report summarizes the results of winter wheat variety tests for 2020-2021 in five locations.