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Full-Text Articles in Life Sciences

Evaluating Varieties Of Alfalfa And Tall Fescue For Tolerance To Over-Grazing By Cattle, Robert F. Spitaleri, Jimmy C. Henning, Charles T. Dougherty, Garry D. Lacefield, B. T. Larson Dec 2021

Evaluating Varieties Of Alfalfa And Tall Fescue For Tolerance To Over-Grazing By Cattle, Robert F. Spitaleri, Jimmy C. Henning, Charles T. Dougherty, Garry D. Lacefield, B. T. Larson

IGC Proceedings (1997-2023)

Cultivars of alfalfa (Medicago sativa L.) and tall fescue (Festuca arundinacea Schreb.) were seeded in small (1.5 m x 4.6 m) plots and harvested for estimating yield the following spring. Plots were then grazed by cattle continuously for the remainder of the season so as to keep stand heights at 7.5 cm or less. This procedure was repeated for one or two more grazing seasons, depending on stand survival. Stands were visually rated for stand in the fall and spring. Marked differences in grazing tolerance were observed among alfalfa cultivars, following closely the commercial designations as grazing-type or …


Structural Stability Of Short Latency Alfalfa-Based Pastures In The Humid Pampa, Argentina, R. O. Refi, B. Martín Dec 2021

Structural Stability Of Short Latency Alfalfa-Based Pastures In The Humid Pampa, Argentina, R. O. Refi, B. Martín

IGC Proceedings (1997-2023)

The aim of this study was to search the effects of grazing intensity and nitrogen fertilization on the structural stability of a mixed pasture composed by alfalfa (latency group 9), brome grass, tall fescue and white clover, sown in April 1997. Rotational grazing was carried out with dairy cattle with high intensity (HI: up to 3-4 cm) or moderate intensity (LI: up to 8-10 cm), whenever the alfalfa showed basal regrowth. According to a split-plot design, grazing intensities were subdivided to assign three levels of nitrogen fertilization: N0, without fertilization; N1 with 50 kg N/ha per year; and N2 with …


Seeding Rate Effects On Forage Mass And Vegetation Dynamics Of Cool-Season Grass Sod Interseeded With Sorghum-Sudangrass, John A. Guretzky, D. D. Redfearn Nov 2021

Seeding Rate Effects On Forage Mass And Vegetation Dynamics Of Cool-Season Grass Sod Interseeded With Sorghum-Sudangrass, John A. Guretzky, D. D. Redfearn

Department of Agronomy and Horticulture: Faculty Publications

Interseeding annual warm-season grasses into perennial cool-season grasses has the potential to increase summer forage mass and nutritive value. Knowledge of how seeding rate affects annual warm-season grass establishment, forage mass, and vegetation dynamics remains limited. From 2016–2017, we conducted a field experiment evaluating the effects of seeding rates on sorghum-sudangrass (Sorghum bicolor x S. bicolor var. sudanense) density and forage mass and on the frequency of occurrence of plant species in cool-season grass sod in Lincoln, NE. The experiment had a completely randomized design consisting of six replicates of four seeding rates [0, 14, 28, and 35 …


Impact Of Management On Endophyte Free And Endophyte Infected Tall Fescue Cultivars In Ohio, C. D. Penrose, Reuben M. Sulc, J. S. Mccutcheon Nov 2021

Impact Of Management On Endophyte Free And Endophyte Infected Tall Fescue Cultivars In Ohio, C. D. Penrose, Reuben M. Sulc, J. S. Mccutcheon

IGC Proceedings (1997-2023)

Ten cultivars of tall fescue (Festuca arundinacea, Schreb.) and one cultivar of orchardgrass (Dactylis glomerata L.) were part of a study to determine changes in endophyte levels of fescue under two different styles of forage management: intensive and extensive. Included in the study were two endophyte infected-cultivars of tall fescue to compare interactions with endophyte free and infected cultivars. After three years, the results demonstrate that under high levels of management and non-endophyte infected crops prior to seeding, introduction of the endophyte can be reduced or delayed. Under lower levels of management and a smother crop into …


Effect Of The Mixed Rates Of Endophyte-Free And -Infected Seed On The Dry Matter Yield And Forage Quality Of Tall Fescue, J. K. Lee, S. H. Yoon, S. Seo, D. A. Kim, Y. W. Rim, G. J. Park, S. K. Lee Nov 2021

Effect Of The Mixed Rates Of Endophyte-Free And -Infected Seed On The Dry Matter Yield And Forage Quality Of Tall Fescue, J. K. Lee, S. H. Yoon, S. Seo, D. A. Kim, Y. W. Rim, G. J. Park, S. K. Lee

IGC Proceedings (1997-2023)

This study was carried out to investigate the effect of the mixed rates of endophyte-free and infected seed on the dry matter yield and forage quality of tall fescue in Korea. In experiment, mixed ratios of endophyte-infected and -free seed were compared under the fourth cutting. Dry matter yield and forage quality of tall fescue were not influenced by mixed rates. The weed contents of botanical composition were slightly increased with high ratios of endophyte-free seed. The results demonstrated that endophyte-free tall fescue did not seem to be greatly weak under bad conditions.


Evaluation And Utilization Of A Tall Fescue Germplasm Collection At Pergamino Inta, Argentina, B. S. Rosso, E. M. Pagano, P. Rimieri Nov 2021

Evaluation And Utilization Of A Tall Fescue Germplasm Collection At Pergamino Inta, Argentina, B. S. Rosso, E. M. Pagano, P. Rimieri

IGC Proceedings (1997-2023)

One hundred and fifty four accessions of tall fescue (Festuca arundinacea Schreb.) representing different types grown around the world were evaluated at Pergamino Inta Experimental Station. A multivariate analysis was carried out to evaluate individual and group variations. Three principal components (PCs) explained 70 % of the variation. Cluster analysis (Ward method) allowed the identification of 7 groups of populations. Plants from the most promising populations were selected in order to form a new breeding gene pool. The main objective of this study is to develop a new cultivar with improved winter herbage yield. Selected genotypes were mostly of …


Maturity And Fertilization Effects On Leaf Blade Tissue Percentages Of Contrasting Fescue Cultivars, L. B. Tempone, M. S. Cid, M. A. Brizuela, M. C. Nunciari, M. G. Cendoya Oct 2021

Maturity And Fertilization Effects On Leaf Blade Tissue Percentages Of Contrasting Fescue Cultivars, L. B. Tempone, M. S. Cid, M. A. Brizuela, M. C. Nunciari, M. G. Cendoya

IGC Proceedings (1997-2023)

Palenque Plus and Ceres Torpedo are tall fescue (Festuca arundinacea Schreb.) cultivars available to the animal production systems in the humid Pampean Region of Argentina. They differ in growth cycle and morphological characteristics. At vegetative stage, Torpedo leaves are fine and tender, which suggests that their percentages of slowly digestible and indigestible tissues (SDIT) should be low. In this study we 1) explored the effects of phenological stage and nitrogen fertilization on leaf blade tissue percentages of both cultivars, using an ordination multivariate technique, and 2) evaluated the effects of these factors on the percentage of SDIT. Our results …


Nitrogen Options To Increase Yields For Stockpiling Cool Season Grass In Eastern Ohio, Usa, C. D. Penrose, J. S. Mccutcheon, D. F. Lima, T. G. Wiseman, M. A. Landefeld Oct 2021

Nitrogen Options To Increase Yields For Stockpiling Cool Season Grass In Eastern Ohio, Usa, C. D. Penrose, J. S. Mccutcheon, D. F. Lima, T. G. Wiseman, M. A. Landefeld

IGC Proceedings (1997-2023)

Stockpiling cool season grass for grazing in the fall and winter is an option to extend the grazing season. The purpose of this study was to determine the effects of yield and quality by adding urea, urea with Agrotain®, and ammonium sulfate to cool season grasses, primarily fescue and orchardgrass. This was the third year of the three location study in Southeast Ohio. Each location had a randomized complete block design with four treatments (control, 112 kg urea ha-1, 112 kg urea ha-1 plus Agrotain®, and 245.5 kg ammonium sulfate ha-1) and four replications of …


Bee-Friendly Beef: Developing Biodiverse Pastures To Increase Ecosystem Services, J. Wagner, S. Ghajar, M. O’Rourke, B. Tracy Oct 2021

Bee-Friendly Beef: Developing Biodiverse Pastures To Increase Ecosystem Services, J. Wagner, S. Ghajar, M. O’Rourke, B. Tracy

IGC Proceedings (1997-2023)

The capacity of grasslands to provide ecosystem services, such as pollinator resources, is often limited by lack of plant biodiversity. This is true of grasslands in the eastern US that are dominated by tall fescue (Festuca arundinacea) a non-native, cool-season grass that is typically toxic to cattle. This paper summarizes a research project in Virginia, USA exploring the idea that ecosystem services provided by tall fescue-dominated grasslands can be improved by increasing the plant biodiversity available to beef cattle and bees. Within three 6.5 ha tall fescue grasslands, we established 0.8 ha plots with a 17 species mix …


Perloline, The Forgotten Plant Alkaloid, L. P. Bush Oct 2021

Perloline, The Forgotten Plant Alkaloid, L. P. Bush

IGC Proceedings (1997-2023)

Perloline, a biologically active plant alkaloid, accumulated in vegetative tissue of tall fescue during the summer months. Perloline content increased with increased available nitrogen and light. Total perloline accumulation was greatest with NO3-N fertilizer, but greatest perloline content per unit of dry wt was measured with NH4-N. In mature plants greatest perloline accumulation occurred in the leaves and immature inflorescences, but was not detected in the seed. Leaves of meadow fescue contained the greatest amounts of perloline, tall fescue was intermediate and giant fescue, and ryegrasses and yellow foxtail had low amounts of the alkaloid. Tryptophan …


Forage News [2021-10], Department Of Plant And Soil Sciences, University Of Kentucky Oct 2021

Forage News [2021-10], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

No abstract provided.


Leaf Elongation Rate Of Mediterranean And Temperate Tall Fescue Cultivars Under Water Deficit, Silvia G. Assuero, C. Matthew, Mónica G. Agnusdei Sep 2021

Leaf Elongation Rate Of Mediterranean And Temperate Tall Fescue Cultivars Under Water Deficit, Silvia G. Assuero, C. Matthew, Mónica G. Agnusdei

IGC Proceedings (1997-2023)

The leaf elongation rate of a temperate (Festuca arundinacea Schreb.) and a Mediterranean (F. arundinacea var. letourneuxiana) tall fescue cultivar in response to water deficit was studied in a glasshouse experiment. Plants of both cultivars were grown in the same containers and received water daily with gradation in intensity of water deficit achieved by varying the daily water ration per container. Leaf elongation rate (LER) was calculated for eight successive subperiods during the application of the water treatments. Under the high temperatures registered in this experiment, the Mediterranean cultivar showed lower LERs and tended to be less …


Multi-Year Application Of Dairy Slurry On Grassland: Effects On Crop, Soil Biota, Soil Nutrients, And N2O Emission, Shabtai Bittman, C. G. Kowalenko, D. E. Hunt, N. Patni, J. Paul, D. Raworth, J. Hountin, T. A. Forge, C. M. Monreal, O. Schmidt Sep 2021

Multi-Year Application Of Dairy Slurry On Grassland: Effects On Crop, Soil Biota, Soil Nutrients, And N2O Emission, Shabtai Bittman, C. G. Kowalenko, D. E. Hunt, N. Patni, J. Paul, D. Raworth, J. Hountin, T. A. Forge, C. M. Monreal, O. Schmidt

IGC Proceedings (1997-2023)

The long-term effects of using manure as the principal nutrient source in intensive crop production systems are not well known. This paper reports on the effects of multi-year application of fertilizer or dairy slurry on a tall fescue (Festuca arundinacea Schreb.) sward. Slurry sustained greater grass yield than chemical fertilizer. Unlike fertilizer, slurry supplied 70 to 120 kg N/ha one year after application but little after one year; 4-years of manure applications built up the stable organic matter pool in the soil. Manure-N was less prone to leaching but more prone to N2O emissions than fertilizer-N. Manured …


Forage News [2021-09], Department Of Plant And Soil Sciences, University Of Kentucky Sep 2021

Forage News [2021-09], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

No abstract provided.


Effect Of Climatic Factors On The Plant Population Dynamics In Temperate Pasture Implantation, B. Martin, R. Refi, S. Montico, M. Costanzo Aug 2021

Effect Of Climatic Factors On The Plant Population Dynamics In Temperate Pasture Implantation, B. Martin, R. Refi, S. Montico, M. Costanzo

IGC Proceedings (1997-2023)

The objective of this experiment was to determine the environmental influence on seedling emergence of alfalfa and fescue in mixture. We hypothesized that the temperature and precipitation data could be used to estimate field emergence of alfalfa and fescue. A field trial was carried out at Zavalla, Argentina and consisted of sowing a tall fescue – alfalfa mixture at different seeding date (March, April and June). Relationships between the range of temperature, rainfalls and alfalfa and fescue seedling emergence were described by linear regression models. Patterns of emergence and death of alfalfa and fescue seedling were found in the different …


Research On The Sterilization Method For Endophytic Fungi Of Tall Fescue Seeds, Zhifei Zhang, Liqun Rao, Jing Xiao Jun 2021

Research On The Sterilization Method For Endophytic Fungi Of Tall Fescue Seeds, Zhifei Zhang, Liqun Rao, Jing Xiao

IGC Proceedings (1997-2023)

No abstract provided.


Effects Of Stage Of Harvest On Yield And Quality Traits In Tall Fescue (Festuca Arundinace), A. A. Jafari, M. Rezaifard, M. H. Assareh May 2021

Effects Of Stage Of Harvest On Yield And Quality Traits In Tall Fescue (Festuca Arundinace), A. A. Jafari, M. Rezaifard, M. H. Assareh

IGC Proceedings (1997-2023)

No abstract provided.


The Standardization Breeding Systematic Construction For Seed Production Of Qiancao No. 2 Tall Fescue, Tianqiong Luo, Bentian Mo, Zhongfu Long, Junjiang Meng, Ruixiang Chen May 2021

The Standardization Breeding Systematic Construction For Seed Production Of Qiancao No. 2 Tall Fescue, Tianqiong Luo, Bentian Mo, Zhongfu Long, Junjiang Meng, Ruixiang Chen

IGC Proceedings (1997-2023)

No abstract provided.


Estancia Vs. Kentucky 31: Examining Leaf Nutrient Content Of Established Tall Fescue, Macie W. Clark May 2021

Estancia Vs. Kentucky 31: Examining Leaf Nutrient Content Of Established Tall Fescue, Macie W. Clark

MSU Graduate Theses

In 2020 Missouri ranked third in beef cattle production and second in hay production. As part of the fescue belt of the United States, Missouri’s agricultural industries rely on tall fescue (Lolium arundinaceum Schreb.) as a main forage crop. Two major disorders in cattle grazing tall fescue are fescue toxicosis and grass tetany. Fescue toxicosis occurs when animals consume toxic ergot alkaloids produced by an endophyte within the tall fescue plants. The most commonly grown tall fescue variety, Kentucky 31, is infected with the toxic endophyte. Varieties containing a novel non-toxic endophyte, such as Estancia, have been developed to …


Milk C18 :1 And Conjugated Linoleic Acid Isomers From Cows Grazed On Perennial Ryegrass, Tall Fescue Or Timothy Grass Swards, Michael R. F. Lee, E. J. Kim, N. Ellis, J. K. S. Tweed, Nigel D. Scollan Apr 2021

Milk C18 :1 And Conjugated Linoleic Acid Isomers From Cows Grazed On Perennial Ryegrass, Tall Fescue Or Timothy Grass Swards, Michael R. F. Lee, E. J. Kim, N. Ellis, J. K. S. Tweed, Nigel D. Scollan

IGC Proceedings (1997-2023)

No abstract provided.


Milk C18 Polyunsaturated Fatty Acids From Cows Grazed On Perennial Ryegrass, Tall Fescue Or Timothy Grass Swards, Michael R. F. Lee, E. J. Kim, N. Ellis, J. K. S. Tweed, Nigel D. Scollan Apr 2021

Milk C18 Polyunsaturated Fatty Acids From Cows Grazed On Perennial Ryegrass, Tall Fescue Or Timothy Grass Swards, Michael R. F. Lee, E. J. Kim, N. Ellis, J. K. S. Tweed, Nigel D. Scollan

IGC Proceedings (1997-2023)

No abstract provided.


Field Performance Of Transgenic Tall Fescue (Festuca Arundinacea Schreb.) With Enhanced Tolerance To Environmental Stress, Ki-Yong Kim, Sang-Hoon Lee, Gi-Jun Choi, Hee-Chung Ji, Joung-Kyong Lee, Keun-Bal Lim, Byung-Ryul Seong, Sung Seo, Byung‐Hyun Lee, Sang‐Soo Kwak Feb 2021

Field Performance Of Transgenic Tall Fescue (Festuca Arundinacea Schreb.) With Enhanced Tolerance To Environmental Stress, Ki-Yong Kim, Sang-Hoon Lee, Gi-Jun Choi, Hee-Chung Ji, Joung-Kyong Lee, Keun-Bal Lim, Byung-Ryul Seong, Sung Seo, Byung‐Hyun Lee, Sang‐Soo Kwak

IGC Proceedings (1997-2023)

No abstract provided.


Development Of Transgenic Tall Fescue Plants With Enhanced Tolerance To Multiple Abiotic Stresses, K. H. Kim, Sang‐Hoon Lee, K. W. Lee, C. H. Park, I. Alam, D. G. Lee, Sang‐Soo Kwak, Byung‐Hyun Lee Feb 2021

Development Of Transgenic Tall Fescue Plants With Enhanced Tolerance To Multiple Abiotic Stresses, K. H. Kim, Sang‐Hoon Lee, K. W. Lee, C. H. Park, I. Alam, D. G. Lee, Sang‐Soo Kwak, Byung‐Hyun Lee

IGC Proceedings (1997-2023)

No abstract provided.


Forage News [2021-02], Department Of Plant And Soil Sciences, University Of Kentucky Feb 2021

Forage News [2021-02], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

No abstract provided.


Turf Performance Of 19 Tall Fescue Varieties During Summer Stress, Zhiming Yang, Zhihua Li Jan 2021

Turf Performance Of 19 Tall Fescue Varieties During Summer Stress, Zhiming Yang, Zhihua Li

IGC Proceedings (1997-2023)

No abstract provided.


Forage News [2021-01], Department Of Plant And Soil Sciences, University Of Kentucky Jan 2021

Forage News [2021-01], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

No abstract provided.


Influence Of Herbicides And Irrigation On Tall Fescue Shoot And Root Growth, Dani Mcfadden, Jack Fry, Steve Keeley, Jared Hoyle Jan 2021

Influence Of Herbicides And Irrigation On Tall Fescue Shoot And Root Growth, Dani Mcfadden, Jack Fry, Steve Keeley, Jared Hoyle

Kansas Agricultural Experiment Station Research Reports

When turfgrass stands are under renovation, a common problem is removing weeds prior to seeding because seedling turf does not emerge and compete well with weeds that are present. However, most herbicide labels recommend waiting for a defined period of time prior to seeding. If seeding is done prior to the date prescribed on the herbicide label, seed germination and seedling growth may be inhibited. A greenhouse study was conducted to determine the effects of irrigation prior to seeding on seedling growth after herbicide application. Overall, irrigation had no influence on the impact of herbicides on shoot or root growth …


Emergence And Growth Of Tall Fescue Seedlings After Postemergence Broadleaf Herbicide Application, Dani Mcfadden, Jack Fry, Steve Keeley Jan 2021

Emergence And Growth Of Tall Fescue Seedlings After Postemergence Broadleaf Herbicide Application, Dani Mcfadden, Jack Fry, Steve Keeley

Kansas Agricultural Experiment Station Research Reports

Effective weed control prior to seeding is essential for proper turfgrass establishment since competition from weeds can cause sward establishment to fail. Herbicides with multiple active ingredients from different chemical families could increase weed control efficacy, but hinder the establishment of newly seeded turf. Research trials were initiated in the fall of 2020 in Olathe and Manhattan, KS, to determine if tall fescue (Schedonorus arundinaceus) could be seeded earlier after application than stated on the herbicide labels. Overall, this study demonstrated that seeding between 0 to 14 days after an application of carfentrazone-ethyl + MCPP + 2,4-D + …


Nitrogen Fertilizer Timing And Phosphorus And Potassium Fertilization Rates For Established Endophyte-Free Tall Fescue: Year 3, D. W. Sweeney, J. K. Farney, J. L. Moyer, D. A. Ruiz Diaz Jan 2021

Nitrogen Fertilizer Timing And Phosphorus And Potassium Fertilization Rates For Established Endophyte-Free Tall Fescue: Year 3, D. W. Sweeney, J. K. Farney, J. L. Moyer, D. A. Ruiz Diaz

Kansas Agricultural Experiment Station Research Reports

Tall fescue production was measured during the third production year of a study with locations started in fall of 2016 and fall of 2017. Phosphorus (P) fertilization rate af­fected spring harvest yield at Site 1, but not at Site 2. Applying nitrogen (N) in late fall or late winter resulted in greater spring yields than applying N in spring or not applying N. However, fall harvest yields at Site 1 were greater with spring N application, but not at Site 2. The third-year tall fescue total yield rank as affected by N fertilizer timing was late winter>late fall=spring>no …