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Articles 91 - 120 of 959
Full-Text Articles in Plant Sciences
Forage Crop Water Use And Production Under Dryland Conditions, R. Aiken, F. Lamm
Forage Crop Water Use And Production Under Dryland Conditions, R. Aiken, F. Lamm
Kansas Agricultural Experiment Station Research Reports
Forage crops contribute diversity and buffer agronomic risk in water-limited cropping systems. Knowledge of growth responses to uncertain water supply can help guide crop selection and management—including timing of harvest. Our research objective was to determine water use and growth responses of forage winter triticale and forage sorghum under rainfed conditions.
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 …
Reclaiming Old World Bluestem Pasture With Imazapyr Application And Native Grass Overseeding, Keith Harmoney
Reclaiming Old World Bluestem Pasture With Imazapyr Application And Native Grass Overseeding, Keith Harmoney
Kansas Agricultural Experiment Station Research Reports
Old world bluestems (OWB), mainly Caucasian bluestem (Bothriochloa bladhii) and yellow bluestem(Bothriochloa ischaemum)introduced from parts of eastern Europe, Asia, Africa, and Australia, have been shown to reduce abundance and diversity of some insect and wildlife species compared to native grasses when these OWB grasses form dense stands. These OWBs have been invading native pastures in the southern Great Plains and are rapidly increasing in the amount of area occupied in Kansas. Two landowners purchased pasture property in Ellsworth County, KS, and observed that Caucasian old world bluestem had increased in the pasture significantly over the course …
Bermudagrass Under Different Fertility And Harvest Management Practices, B. C. Pedreira, D. Helwig, M. Haywood, J. K. Farney, G. Sassenrath
Bermudagrass Under Different Fertility And Harvest Management Practices, B. C. Pedreira, D. Helwig, M. Haywood, J. K. Farney, G. Sassenrath
Kansas Agricultural Experiment Station Research Reports
A second year of a bermudagrass fertility study was conducted at the K-State Research and Experiment Station outside of Columbus, KS, in 2021. The purpose of the study was to simulate forage producers’ practices of managing bermudagrass and determine how each practice affected forage production and quality.
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.
Southeast Research And Extension Center Agricultural Research 2022
Southeast Research And Extension Center Agricultural Research 2022
Kansas Agricultural Experiment Station Research Reports
Report of agricultural research from Southeast Research and Extension Center, Kansas State University.
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.
Corn Tiller Yield Contributions Are Dependent On Environment: A 17 Site-Year Kansas Study, R. L. Veenstra, D. Berning, P. Carter, S. Wallace, M. Legleiter, L. Currie, C. D. Messina, P. V. Vara Prasad, T. J. Hefley, L. A. Haag, I. A. Ciampitti
Corn Tiller Yield Contributions Are Dependent On Environment: A 17 Site-Year Kansas Study, R. L. Veenstra, D. Berning, P. Carter, S. Wallace, M. Legleiter, L. Currie, C. D. Messina, P. V. Vara Prasad, T. J. Hefley, L. A. Haag, I. A. Ciampitti
Kansas Agricultural Experiment Station Research Reports
Historic breeding efforts in corn (Zea maysL.) have resulted in uniform, single-stalked phenotypes with limited potential for environmental plasticity. Therefore, plant density is a critical yield component for corn, as corn is unable to successfully compensate for a deficit of plants. Other grass crop species can overcome plant density deficits via vegetative branching (tillering), but this trait is historically undesirable in corn. Improving corn flexibility across plant densities has potential benefits, particularly considering diverse yield environments and seasonal weather uncertainties due to climate change. The present study evaluated tiller presence with two hybrids in a range of plant …
Do Late Season Soybean Management Practices Impact Seed Yields In East Kansas?, A. A. Correndo, L. F. A. Almeida, E. Adee, I. A. Ciampitti
Do Late Season Soybean Management Practices Impact Seed Yields In East Kansas?, A. A. Correndo, L. F. A. Almeida, E. Adee, I. A. Ciampitti
Kansas Agricultural Experiment Station Research Reports
In soybean (Glycine max[L.] Merr.), maintaining favorable growth conditions (e.g., water, solar radiation, and nutrients) during the seed filling period is crucial to avoid limitations that could reduce seed weight and ultimately constrain seed yield. The objective of this study was to explore potential effects and identify if “late-season” management practices can contribute to increasing seed weight and seed yield in soybeans.
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, …
Fall-Planted Cover Crops For Weed Suppression In Western Kansas, S. Dhanda, V. Kumar, A. K. Obour, A. Dille, J. D. Holman
Fall-Planted Cover Crops For Weed Suppression In Western Kansas, S. Dhanda, V. Kumar, A. K. Obour, A. Dille, J. D. Holman
Kansas Agricultural Experiment Station Research Reports
The widespread evolution of herbicide-resistant (HR) kochia and Palmer amaranth warrants the use of alternative ecological-based strategies for weed management in no-tillage (NT) dryland cropping systems in western Kansas. A field study was established in the fall of 2020 at Kansas State University Agricultural Research Center near Hays, KS, to determine the impact of fall-planted cover crop (CC) mixture on 1) kochia and Palmer amaranth suppression (density and biomass reduction), and 2) Palmer amaranth emergence dynamics in subsequent grain sorghum. A CC mixture of winter triticale, winter pea, radish, and rapeseed was planted in wheat stubble in the fall of …
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.
Firstact For Efficacy In Accase-Tolerant Grain Sorghum, R. S. Currie, P. W. Geier
Firstact For Efficacy In Accase-Tolerant Grain Sorghum, R. S. Currie, P. W. Geier
Kansas Agricultural Experiment Station Research Reports
The objective of this study was to compare FirstAct with several tank mix partners for efficacy in herbicide-tolerant grain sorghum. FirstAct (quizalofop) alone or in tank mixtures controlled Johnsongrass 94% or more. However, tank mixing FirstAct with any broadleaf herbicide was generally antagonistic to Palmer amaranth control. Minor sorghum injury was 5% or less by four weeks after postemergence treatment. Sorghum yields increased with all postemergence treatments except with atrazine alone.
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/.
Intensification Of Sprinkler-Irrigated Corn Production, F. R. Lamm
Intensification Of Sprinkler-Irrigated Corn Production, F. R. Lamm
Kansas Agricultural Experiment Station Research Reports
This corn intensification study was conducted under sprinkler irrigation from 2020 to 2021 at the Kansas State University Northwest Research-Extension Center near Colby, KS. Two corn hybrids (Pioneer 1197 and Pioneer 1089) 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). As anticipated, there was no additional need for irrigation above normal amounts (100% of ET - Rain), giving further evidence that crop intensification is possible without negatively affecting water resource use. Yields were excellent in both years, averaging 227 bu/a …
Historical Characterization Of Sorghum Grain Filling Dynamics, J. Grünberg, A. J. P. Carcedo, P. A. Demarco, L. Mayor, I. A. Ciampitti
Historical Characterization Of Sorghum Grain Filling Dynamics, J. Grünberg, A. J. P. Carcedo, P. A. Demarco, L. Mayor, I. A. Ciampitti
Kansas Agricultural Experiment Station Research Reports
Understanding crop response to manipulations in source (number of leaves) and sink (panicle) during the growing season provides useful information to develop crop breeding strategies. In the present study, we assessed how source-sink manipulation can affect sorghum (Sorghum bicolorL.) yield and its components—grain number and grain weight (including grain filling dynamics)—for hybrids released in the past 60 years. The field experiment was conducted during the 2021 growing season in Wamego, KS (US), testing six commercially available grain sorghum hybrids released between 1963 and 2020. Grain weight significantly decreased from 28 to 21 mg in defoliation treatments among hybrids …
Aerification Effects On ‘Innovation’ Zoysiagrass In 2020-2021, Dani Mcfadden, Jack D. Fry
Aerification Effects On ‘Innovation’ Zoysiagrass In 2020-2021, Dani Mcfadden, Jack D. Fry
Kansas Agricultural Experiment Station Research Reports
When a thatch layer accumulates on turfgrass it can be detrimental to the stand. A field experiment was initiated to investigate aerification treatments and their influence on thatch (organic matter level), quality, and color of ‘Innovation’ zoysiagrass that was sodded within the past year. Turfgrass that was intensely aerified had less organic matter content in the surface inch of the profile compared to turfgrass that was not aerified. Color was also enhanced in treatments receiving aerification compared to non-aerified turf, which may have been attributed to trending of higher nitrate content in aerified plots.
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 …
Establishing Seeded Tall Fescue With Covers And Drip Irrigation Methods, Alex P. Bach, Dale J. Bremer, Cathie C. Lavis, Steven J. Keeley, Mu Hong
Establishing Seeded Tall Fescue With Covers And Drip Irrigation Methods, Alex P. Bach, Dale J. Bremer, Cathie C. Lavis, Steven J. Keeley, Mu Hong
Kansas Agricultural Experiment Station Research Reports
The use of covers may improve establishment of seeded turfgrass but their use in combination with drip irrigation techniques has not been evaluated. We investigated the effects of two cover types and three irrigation methods on establishment of seeded tall fescue turfgrass. For spring seeding of tall fescue[Schedonorus arundinaceus(Schreb.) Dumort.], turf establishment was successful with subsurface drip irrigation (SDI) and aboveground drip irrigation (AGD) in fine textured soil in the transition zone. With SDI, AGD, or sprinkler irrigation, both polyester mesh (Poly) and straw blanket (Straw) covers improved turf establishment in the order of Poly>Straw>No Cover, …