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Articles 31 - 60 of 65
Full-Text Articles in Life Sciences
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) …
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 …
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.
2022 Western Kansas Agricultural Research Report
2022 Western Kansas Agricultural Research Report
Kansas Agricultural Experiment Station Research Reports
Summary of research conducted at western Kansas research stations, including Hays, Garden City, Tribune, and Colby. Topics include corn, cropping and tillage systems, insect control, irrigation, management practices, weather, weed science, and wheat.
Evaluation Of Soil Test Phosphorus Extractants And Tissue Analysis For Corn, G. A. Roa-Acosta, D. A. Ruiz Diaz
Evaluation Of Soil Test Phosphorus Extractants And Tissue Analysis For Corn, G. A. Roa-Acosta, D. A. Ruiz Diaz
Kansas Agricultural Experiment Station Research Reports
The objective of this study was to evaluate the relationship of four different soil test phosphorus methods (Mehlich 3, Bray 1, Bray 2, and Haney H3A) for corn production, and determine critical P tissue concentration at different growing stages. The experiment was conducted at 12 locations, and the fertilizer treatments consisted of five phosphorus fertilizer rates applied by broadcast pre-plant. Soil samples were collected at 0- to 6-in. depth, then samples were collected before treatment application by block. Tissue samples were collected at the V6 and R1 growth stages. The relationship between the different soil test phosphorus methods and the …
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 …
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 …
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.
Effect Of Late Planting Dates On Corn Yield, E. Adee
Effect Of Late Planting Dates On Corn Yield, E. Adee
Kansas Agricultural Experiment Station Research Reports
Planting date studies have been conducted for corn over many years. Often the focus has been to determine optimum planting date for maximizing yield. In some areas, planting early-maturing corn hybrids as early as possible has been a successful strategy for avoiding hot, dry conditions at the critical pollination and early grain fill stages. Planting later can be an alternative strategy that attempts to avoid the most intense heat by moving the critical growth stages for corn centered around pollination to later in the growing season. This strategy has been adopted by some growers in areas that often encounter heat …
Effects Of Late Summer Prescribed Fire On Botanical Composition, Soil Cover, And Forage Production In Caucasian Bluestem-Infested Rangeland In The Kansas Smoky Hills: Year 3 Of 4, M. P. Ramirez, A. J. Tajchman, Z. M. Duncan, J. Lemmon, K C. Olson
Effects Of Late Summer Prescribed Fire On Botanical Composition, Soil Cover, And Forage Production In Caucasian Bluestem-Infested Rangeland In The Kansas Smoky Hills: Year 3 Of 4, M. P. Ramirez, A. J. Tajchman, Z. M. Duncan, J. Lemmon, K C. Olson
Kansas Agricultural Experiment Station Research Reports
Objective:The objective was to document the effects of late-summer prescribed fire on soil cover, botanical composition, and forage production in the Kansas Smoky Hills and associated effects on dense Caucasian bluestem (Bothriochloa bladhii) stands therein.
Study Description:The study took place on a private ranch in Ellsworth County, in the Kansas Smoky Hills. Eighteen one-acre plots were assigned randomly to one of two prescribed-fire treatments: no burn (control) and burn (burned August 14, 2019). Soil cover, plant composition, and forage production were evaluated annually. These data represent plant community effects prior to treatment and one and two …
Effects Of Prescribed Fire Timing On Stocker Cattle Performance And Native Plant Composition: Year 3 Of 6, Z. M. Duncan, A. J. Tajchman, M. P. Ramirez, J. Lemmon, K. J. Suhr, W. R. Hollenbeck, D. A. Blasi, K C. Olson
Effects Of Prescribed Fire Timing On Stocker Cattle Performance And Native Plant Composition: Year 3 Of 6, Z. M. Duncan, A. J. Tajchman, M. P. Ramirez, J. Lemmon, K. J. Suhr, W. R. Hollenbeck, D. A. Blasi, K C. Olson
Kansas Agricultural Experiment Station Research Reports
Objective:The objective of this experiment was to document the effects of prescribed-fire timing on stocker cattle performance, soil cover, and plant species composition over a six-year period.
Study Description:Yearling stocker cattle were assigned to one of three prescribed-burn treatments: spring (April 9 ± 5.1 days), summer (August 23 ± 4.9 days), or fall (September 29 ± 8.7 days). Calves were grazed from May to August for 90 days. Individual body weights (BW) were recorded at the beginning and end of the grazing season to determine total BW gains and average daily gains. Native plant composition and soil cover …
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.
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.
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.
Cover Crop Grazing Effects On Soil Compaction Indicators In Western And Central Kansas, L. M. Simon, A. K. Obour, J. D. Holman, S. K. Johnson, K. L. Roozeboom
Cover Crop Grazing Effects On Soil Compaction Indicators In Western And Central Kansas, L. M. Simon, A. K. Obour, J. D. Holman, S. K. Johnson, K. L. Roozeboom
Kansas Agricultural Experiment Station Research Reports
Grazing cover crops (CCs) on no-till (NT) croplands in western and central Kansas could increase the profitability of crop production in these water-limited environments. However, little information exists about potential soil compaction associated with grazing CCs in these cropping systems. From 2019 to 2021, two studies investigated the effects of grazing CCs on soil bulk density and penetration resistance in NT cropping systems. At the Kansas State University HB Ranch near Brownell, KS, CCs grazed with yearling heifers were compared to ungrazed CCs and fallow under NT or occasional tillage (OT). In another study, CCs grazed with yearlings or cow-calf …
Yield Response To Nitrogen Management In A Corn-Soybean Sequence In North Central Kansas – 2021 Season, A. A. Correndo, O. Lanza Lopez, L. F. A. Almeida, I. A. Ciampitti
Yield Response To Nitrogen Management In A Corn-Soybean Sequence In North Central Kansas – 2021 Season, A. A. Correndo, O. Lanza Lopez, L. F. A. Almeida, I. A. Ciampitti
Kansas Agricultural Experiment Station Research Reports
The aim of this study was to evaluate the response of corn (Zea maysL.) grain yield to nitrogen (N) fertilizer application and its residual effect on soybean [Glycine max(L.) Merr.] seed yield. During the 2021 growing season, a corn-soybean rotation study was continued at Scandia, KS (USA), evaluating the effect of five N fertilizer rates (0, 53, 107, 161, and 214 lb N/a) applied in corn under both dryland and irrigated conditions. Average corn grain yields ranged from 124 to 147 bu/a for dryland, and from 159 to 203 bu/a for irrigated conditions. However, no significant …
Kansas Field Research 2022
Kansas Agricultural Experiment Station Research Reports
A summary of research conducted in 2020-2022 on field production 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/
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 …
Spring And Summer Cover Crop Effects On Dryland Wheat And Grain Sorghum Yields In Western Kansas, L. M. Simon, A. K. Obour, J. D. Holman, S. K. Johnson, K. L. Roozeboom
Spring And Summer Cover Crop Effects On Dryland Wheat And Grain Sorghum Yields In Western Kansas, L. M. Simon, A. K. Obour, J. D. Holman, S. K. Johnson, K. L. Roozeboom
Kansas Agricultural Experiment Station Research Reports
Incorporating cover crops (CC) to replace fallow in traditional dryland cropping systems in the semi-arid conditions of western Kansas has the potential to enhance soil health, suppress weeds, and increase precipitation use efficiency. The returns from haying or grazing can help cover costs of CC establishment and any reduction in yield from the subsequent grain crop. Two studies were initiated in 2015 and 2016 near Brownell, KS, to investigate dual-purpose spring and summer CC management effects on subsequent grain yields in a three-year no-till (NT) dryland winter wheat-grain sorghum-fallow cropping system. Cover crops were planted in early spring between grain …
Herbicide Activity On Old World Bluestems, Keith Harmoney
Herbicide Activity On Old World Bluestems, Keith Harmoney
Kansas Agricultural Experiment Station Research Reports
Two main species of old world bluestems (OWB), yellow bluestem (Bothriochloa ischaemum) and Caucasian bluestem (Bothriochloa bladhii), have encroached on rangelands, pastures, and road right-of-ways in Kansas. Patches of these OWB have been shown to reduce species diversity and abundance at multiple trophic levels, and pose a long-term threat to native plant, insect, rodent, and grassland bird populations. These OWB species are utilized by cattle early in the growing season, directly following prescribed burns, and during droughts when other forages lack water uptake and may go dormant. However, these OWB species mature more quickly than native …
Roundup 2022: Agricultural Research Center-Hays
Roundup 2022: Agricultural Research Center-Hays
Kansas Agricultural Experiment Station Research Reports
Roundup is the major beef cattle education and outreach event sponsored by the Kansas State University Agricultural Research Center - Hays. This report communicates timely, applicable research information on beef production and rangeland topics.
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.
How Relevant Is High-Cadence Earth Observation For Maize Crop Phenology Classification?, L. Nieto, R. Houborg, A. Zajdband, A. Jumpasut, P. V. Vara Prasad, B. J. S. C. Olson, I. A. Ciampitti
How Relevant Is High-Cadence Earth Observation For Maize Crop Phenology Classification?, L. Nieto, R. Houborg, A. Zajdband, A. Jumpasut, P. V. Vara Prasad, B. J. S. C. Olson, I. A. Ciampitti
Kansas Agricultural Experiment Station Research Reports
Crop phenology can be defined as the study of biological processes such as emergence, flowering, and senescence that are associated with and affected by environmental growing conditions. The ability to reliably detect crop phenology and its spatial-temporal variability is critical for farmers, policymakers, and government agencies, since it has implications for the entire food chain. Currently, two methods are the most used to report crop phenology. Land surface phenology provides insight into the overall trend, whereas USDA-NASS weekly reports provide insight into the development of specific crops at the regional level. High-cadence earth observations may be able to improve the …
Effect Of Early Planting On Soybean Yield, E. Adee, S. Dooley
Effect Of Early Planting On Soybean Yield, E. Adee, S. Dooley
Kansas Agricultural Experiment Station Research Reports
In an effort to increase soybean yield potential, early planting dates have been promoted as a management practice that can increase soybean yields. Early planting of soybeans can be a relative term, meaning late April/early May for some soybean producers in Kansas. For the purpose of this study, the definition of early planted soybeans is late March/early April. Theoretically, the earlier planting date could allow for more vegetative growth and absorption of more light before blooming, increasing the yield potential. With the improvement of soybean seed treatments to protect seed when emergence is slowed due to cool and wet conditions, …
Soybean Seed Yield Productivity And Biological Nitrogen Fixation In Kansas, L. F. A. Almeida, A. A. Correndo, E. Adee, S. Dooley, I. A. Ciampitti
Soybean Seed Yield Productivity And Biological Nitrogen Fixation In Kansas, L. F. A. Almeida, A. A. Correndo, E. Adee, S. Dooley, I. A. Ciampitti
Kansas Agricultural Experiment Station Research Reports
Soybean [Glycine max(L.) Merr.] productivity (seed yield) and biological nitrogen fixation (BNF) were evaluated in response to different fertilization strategies. The study comprised four different locations in Kansas during the 2021 growing season, two irrigated (Topeka and Scandia) and two dryland (Kiro and Ashland Bottoms) sites. Greater seed yields were recorded in Topeka and Kiro (80 bu/a) relative to Scandia (55 bu/a) and Ashland Bottoms (51 bu/a), without observing fertilizer effects on yields. Overall, the relative abundance of ureides (% RAU), an indicator of the level of BNF, increased as the crop matured and showed a negative association …