scholarly journals Chlorothalonil, Trifloxystrobin, and Mancozeb Decrease Anthracnose Symptoms on Three Cultivars of Wintercreeper Euonymus

2006 ◽  
Vol 16 (2) ◽  
pp. 211-215 ◽  
Author(s):  
Stephanie L. Schupbach-Ningen ◽  
Janet C. Cole ◽  
James T. Cole ◽  
Kenneth E. Conway
Keyword(s):  
Colletotrichum Gloeosporioides ◽  
Research Station ◽  
State University ◽  
University Of Arkansas ◽  
Oklahoma State University ◽  
Rooted Cuttings ◽  
Disease Symptoms ◽  
Euonymus Fortunei ◽  
The University ◽  
Plastic Containers

The effectiveness of chlorothalonil, mancozeb, and trifloxystrobin applied alone or in rotations of two or three fungicides to control anthracnose symptoms caused by Colletotrichum gloeosporioides was evaluated on three cultivars of field- and container-grown wintercreeper euonymus (Euonymus fortunei) during the 2001 growing season. Studies were conducted at Stillwater, Okla.; Fayetteville, Ark.; and Park Hill, Okla. Rooted cuttings of wintercreeper euonymus `Emerald Gaiety', `Emerald 'n Gold', and `Emerald Surprise' were transplanted from 1-gal plastic containers into field soil at the Oklahoma State University Nursery Research Station and at the University of Arkansas Horticulture Farm on 10 May 2001. In a parallel study, recently transplanted rooted cuttings of the same cultivars in 1-gal pots containing substrate consisting of pine bark and sand were placed in a shadehouse under 30% shade at Stillwater and Fayetteville and 73% shade at Park Hill on 11 May 2001. `Emerald Gaiety' had fewer disease symptoms than `Emerald 'n Gold' or `Emerald Surprise' in the field and in containers at Stillwater and Fayetteville. At Fayetteville, mancozeb applied alone or in rotation with chlorothalonil or trifloxystrobin provided better anthracnose control than treatments without mancozeb, but no fungicide eliminated anthracnose symptoms. Application of fungicides in rotations that include mancozeb and use of resistant cultivars can help decrease anthracnose symptoms.

scholarly journals 67 Effects of Maternal Disposition and Calf Chute Behavior at Weaning on Calf Finishing Performance

2020 ◽  
Vol 98 (Supplement_2) ◽  
pp. 64-65
Author(s):  
Michael Sims ◽  
Paul A Beck ◽  
Cyril B Stewart ◽  
Cody Shelton ◽  
Reagan N Cauble ◽  
...  
Keyword(s):  
Life Time ◽  
Research Center ◽  
State University ◽  
University Of Arkansas ◽  
Oklahoma State University ◽  
Point Scale ◽  
Calf Performance ◽  
The University ◽  
The Relationship

Abstract Temperament has been reported to impact calf performance. The purpose of this study was to investigate the relationship between maternity disposition and calf temperament at weaning to finishing performance. Maternal disposition at calving and calf chute behavior at weaning data were collected from the University of Arkansas between August 2017 and May 2018. Calves were finished at Oklahoma State University Willard Sparks Research Center between October 2018 and August 2019. Cow behavior was observed at calving and received a disposition score (CDS) that used a 5-point scale where a score of 1 was highly aggressive, and a 5 was apathetic. At weaning, calf weight (WW) and chute behavior (CS) was recorded. Chute behavior at weaning used a 5-point scale; a score of 1 was indicative of a calm exit, and a 5 was aggressive when exiting the chute. Data were analyzed using the GLIMMIX procedure of SAS. Significance was declared at P ≤ 0.05. Calves with CS of 2 at weaning had greater BW both on arrival to feed yard (P < 0.01) and at harvest (P = 0.01) than calves with a CS of 3. Calves from cows with CDS of 3 had greater feedlot arrival weights (P = 0.01) and ADG (P = 0.01) than calves from cows with CDS of 4. This study indicates that cattle with nervous chute behavior (CS = 3) had potentially detrimental effects on performance and can impact overall life-time productivity.

Enantioselective Synthesis of Alcohols and Amines: The Fujii/Ohno Synthesis of (+)-Lysergic Acid

2015 ◽  
Author(s):  
Douglass F. Taber
Keyword(s):  
Kinetic Resolution ◽  
Lysergic Acid ◽  
Enantioselective Synthesis ◽  
Amino Acid Derivative ◽  
State University ◽  
University Of Arkansas ◽  
Keto Ester ◽  
Colorado State University ◽  
Quaternary Center ◽  
The University

Ramón Gómez Arrayás and Juan C. Carretero of the Universidad Autónoma de Madrid effected (Chem. Commun. 2011, 47, 6701) enantioselective conjugate borylation of an unsaturated sulfone 1, leading to the alcohol 2. Robert E. Gawley of the University of Arkansas found (J. Am. Chem. Soc. 2011, 133, 19680) conditions for enantioselective ketone reduction that were selective enough to distinguish between the ethyl and propyl groups of 3 to give 4. Vicente Gotor of the Universidad de Oviedo used (Angew. Chem. Int. Ed. 2011, 50, 8387) an overexpressed Baeyer-Villiger monoxygenase to prepare 6 by dynamic kinetic resolution of 5. Li Deng of Brandeis University prepared (J. Am. Chem. Soc. 2011, 133, 12458) 8 in high ee by kinetic enantioselective migration of the alkene of racemic 7. Bernhard Breit of the Freiburg Institute for Advanced Studies established (J. Am. Chem. Soc. 2011, 133, 20746) the oxygenated quaternary center of 10 by the addition of benzoic acid to the allene 9. Keith R. Fandrick of Boehringer Ingelheim constructed (J. Am. Chem. Soc. 2011, 133, 10332) the oxygenated quaternary center of 13 by enantioselective addition of the propargylic nucleophile 12 to 11. Yian Shi of Colorado State University devised (J. Am. Chem. Soc. 2011, 133, 12914) conditions for the enantioselective transamination of the α-keto ester 14 to the amine 15. Professor Deng added (Adv. Synth. Catal. 2011, 353, 3123) 18 to an enone 17 to give the protected amine 19. Song Ye of the Institute of Chemistry, Beijing effected (J. Am. Chem. Soc. 2011, 133, 15894) elimination/addition of an unsaturated acid chloride 20 to give the γ-amino acid derivative 22. Frank Glorius of the Universität Münster added (Angew. Chem. Int. Ed. 2011, 50, 1410) an aldehyde 23 to 24 to give the amide 25. Sentaro Okamoto of Kanagawa University designed (J. Org. Chem. 2011, 76, 6678) an organocatalyst for the enantioselective Steglich rearrangement of 26, creating the aminated quaternary center of 27. Most impressive of all was the report (Org. Lett. 2011, 13, 5460) by Hélène Lebel of the Université de Montréal of the direct enantioselective C–H amination of 28 to give 29.

scholarly journals Increased Shade Intensity and Afternoon Irrigation Decrease Anthracnose Severity on Three Euonymus fortunei Cultivars

HortScience ◽  
2005 ◽  
Vol 40 (1) ◽  
pp. 111-113 ◽  
Author(s):  
Stephanie S. Ningen ◽  
Janet C. Cole ◽  
Michael W. Smith ◽  
Diane E. Dunn ◽  
Kenneth E. Conway
Keyword(s):  
Colletotrichum Gloeosporioides ◽  
Disease Incidence ◽  
Growing Season ◽  
Time Of Day ◽  
Rooted Cuttings ◽  
Growing Seasons ◽  
Overhead Irrigation ◽  
Irrigation Time ◽  
Euonymus Fortunei ◽  
Disease Damage

The effectiveness of shade intensity and time of day in which irrigation was applied were tested for control of anthracnose symptoms caused by Colletotrichum gloeosporioides (Penz.) Penz. & Sacc. on container-grown Euonymus fortunei (Turcz.) Hand.-Mazz. `Canadale Gold', `Emerald 'n Gold', and `Emerald Gaiety' during the 2002 and 2003 growing seasons. Rooted cuttings in 3.8 L containers were placed in 0% (full sun), 63%, 73%, or 80% shade at Park Hill, Okla., in 2002 and 2003 and at Stillwater, Okla., in 2002. Overhead irrigation was used to irrigate one-half of the plants in each cultivar and shade treatment in the morning and the other one-half during the afternoon. At both sites, disease damage ratings were inversely related to shade intensity throughout each growing season. Disease incidence was usually lower on afternoon irrigated plants than on morning irrigated plants. `Canadale Gold' typically had the most anthracnose symptoms followed by `Emerald 'n Gold'. `Emerald Gaiety' had the least symptoms regardless of shade intensity or irrigation time.

scholarly journals Physiochemical Changes in Floricane and Primocane Blackberries Harvested from Primocane Genotypes

HortScience ◽  
2018 ◽  
Vol 53 (1) ◽  
pp. 9-15 ◽  
Author(s):  
Daniela M. Segantini ◽  
Renee T. Threlfall ◽  
John R. Clark ◽  
Luke R. Howard ◽  
Cindi R. Brownmiller
Keyword(s):  
Titratable Acidity ◽  
Global Market ◽  
Soluble Solids ◽  
Research Station ◽  
University Of Arkansas ◽  
Fresh Market ◽  
Quality Properties ◽  
Several Variables ◽  
Total Anthocyanins ◽  
The University

Fresh-market blackberries (Rubus subgenus Rubus Watson) have a growing global market, with continued release of cultivars to meet demand for consumer-quality fruit. The release of primocane-fruiting blackberry plants that produce crops on both floricanes and primocanes has expanded blackberry production. This study investigated the physiochemical attributes of fresh-market blackberries harvested from two cane types (floricane and primocane) from four primocane genotypes (APF-238, APF-268, ‘Prime-Ark® 45’, and ‘Prime-Ark® Traveler’) grown at the University of Arkansas Fruit Research Station, Clarksville in 2015 and 2016. Year-to-year differences were evident as blackberries harvested in 2016 were smaller (6 g) and less acidic (0.7% titratable acidity) than berries harvested in 2015 (8 g berries with 0.9% titratable acidity); however, soluble solids in each year were similar (≈10.2%). Differences in genotypes were also a factor. ‘Prime-Ark® Traveler’ (2015) and APF-268 (2016) had the highest berry firmness (7.8–8.3 N). In both years, APF-238 had the lowest firmness (5.7–6.0 N), highest isocitric acid (0.8–1.1 g/100 g), and highest total anthocyanins (239–353 mg/100 g). Floricane fruit harvested from ‘Prime-Ark® Traveler’ had the highest berry weights (8.3–10.4 g) in both years. Blackberries harvested from primocanes were wider (21.3–22.9 mm), had higher soluble solids (11.6% to 12.6%), and had lower titratable acidity (0.6%) when compared with floricane fruit in both years. Major year-to-year differences were found for several variables in this study, indicating that environmental effects can be substantial and growers should be aware of this influence on berries harvested from the different cane types. Evaluation of quality properties of floricane and primocane fruit of primocane plants in other locations would be valuable, particularly from areas where commercial blackberry production is established.

Extension Contribution to Anaplasmosis Surveillance in Arkansas: A Story of Collaboration

2021 ◽  
Vol 99 (Supplement_2) ◽  
pp. 8-8
Author(s):  
Heidi M Ward ◽  
Gabriel L Apple ◽  
Lauren R Thomas ◽  
Kathryn E Reif
Keyword(s):  
Veterinary Medicine ◽  
Beef Cattle ◽  
Resistant Bacteria ◽  
Extension Agents ◽  
State University ◽  
University Of Arkansas ◽  
Geographical Regions ◽  
Cattle Herds ◽  
Kansas State University ◽  
The University

Abstract The emergence of resistant bacteria forced the medical and animal agriculture communities to rethink how antibiotics are used. In Arkansas, medicated feed is mostly used to treat or control Anaplasmosis in beef cattle herds. Bovine Anaplasmosis is a tick-borne disease caused by the rickettsial bacteria, Anaplasma marginale. This disease causes over $300 million in losses annually for the U.S. cattle industry. With beef cattle being the fifth largest agricultural commodity in Arkansas, it is important to know the prevalence of Anaplasmosis infection in the state. The project described is a collaborative effort between the University of Arkansas-Fayetteville campus, the University of Arkansas Extension, and the Kansas State University (KSU) College of Veterinary Medicine. Extension agents from 33 Arkansas counties were trained to recruit producers for the study and to coordinate sample collection. On the day of blood collection, Extension agents discussed the purpose of the project and appropriate disclosures with the producers. A total of 578 mature beef cattle were randomly selected from six geographical regions for sampling between the months of November 2019 and February 2020. Both whole blood and serum samples were collected from each animal. PCR testing was completed at the KSU College of Veterinary Medicine andcELISA testing was completed at the University of Arkansas Veterinary Diagnostic Laboratory. Blood samples from 335 cattle (58.7%) were positive for Anaplasmosis on at least one test with the majority of animals testing positive (229; 68.4%) on both the cELISA and PCR tests. Rates of regional prevalence ranged from 36.7% to 93.8%. The overall results were discussed with Extension agents via Zoom prior to discussing results with individual producers. Data from this study were added to previous surveillance data collected by Kansas State University and will direct Extension education efforts pertaining to Anaplasmosis management in regional beef cattle herds.

scholarly journals The Value of Routine Site Visits in Managing and Maintaining Quality Data from the Oklahoma Mesonet

2006 ◽  
Vol 23 (3) ◽  
pp. 406-416 ◽  
Author(s):  
Christopher A. Fiebrich ◽  
David L. Grimsley ◽  
Renee A. McPherson ◽  
Kris A. Kesler ◽  
Gavin R. Essenberg
Keyword(s):  
Environmental Monitoring ◽  
The State ◽  
Quality Data ◽  
Large Network ◽  
State University ◽  
Oklahoma State University ◽  
University Of Oklahoma ◽  
Site Characteristics ◽  
Oklahoma Mesonet ◽  
The University

Abstract The Oklahoma Mesonet, jointly operated by the University of Oklahoma and Oklahoma State University, is a network of 116 environmental monitoring stations across Oklahoma. Technicians at the Oklahoma Mesonet perform three seasonal (i.e., spring, summer, and fall) maintenance passes annually. During each 3-month-long pass, a technician visits every Mesonet site. The Mesonet employs four technicians who each maintain the stations in a given quadrant of the state. The purpose of a maintenance pass is to 1) provide proactive vegetation maintenance, 2) perform sensor rotations, 3) clean and inspect sensors, 4) test the performance of sensors in the field, 5) standardize maintenance procedures at each site, 6) document the site characteristics with digital photographs, and 7) inspect the station’s hardware. The Oklahoma Mesonet has learned that routine and standardized station maintenance has two unique benefits: 1) it allows personnel the ability to manage a large network efficiently, and 2) it provides users access to a multitude of station metadata.

scholarly journals × Polifreda ‘Lindstrom’, a Cross Between False Aloe and Mexican Tuberose

2014 ◽  
Vol 32 (1) ◽  
pp. 51-53
Author(s):  
Will Ritchie ◽  
Jon T. Lindstrom
Keyword(s):  
American South ◽  
Agricultural Research ◽  
Intergeneric Hybrid ◽  
Associate Professor ◽  
Research Station ◽  
University Of Arkansas ◽  
Winter Temperatures ◽  
Partial Shade ◽  
The American South ◽  
The University

× Polifreda ‘Lindstrom’ was developed at the University of Arkansas to increase the range of perennials available to horticulture in the American South. The cultivar was selected from 14 viable seedlings produced by crossing Manfreda virginica (L.) Salisb. ex Rose (male) and Polianthes tuberosa L. (female) via controlled pollination. Specimens have been grown at the University of Arkansas Agricultural Research Station in Fayetteville, Arkansas (USDA Zone 6b) since 2005 and propagated by either division or micropropagation. Desirable characters inherited from P. tuberosa include two flowers per node, a pleasant fragrance, and heat and drought tolerance. Characteristics resembling M. virginica include finely-denticulate leaf margins, a scapose raceme inflorescence type, and tolerance of winter temperatures as low as −25C (−11F). The intergeneric hybrid represents the first cultivar of the nothogenus × Polifreda. The cultivar epithet ‘Lindstrom’ was chosen to honor the contribution to horticulture of the late Jon T. Lindstrom, who was the instigator of the breeding program and a former associate professor at the University of Arkansas. It is proposed that × Polifreda ‘Lindstrom’ would be suited to either perennial borders or rock gardens, situated in full sun or partial shade.

scholarly journals Greenhouse and Landscape Performance of Bedding Plants in Biocontainers

2011 ◽  
Vol 21 (2) ◽  
pp. 155-161 ◽  
Author(s):  
Jeff S. Kuehny ◽  
Matt Taylor ◽  
Michael R. Evans
Keyword(s):  
Root Growth ◽  
Shoot Growth ◽  
State University ◽  
University Of Arkansas ◽  
Bedding Plants ◽  
Louisiana State University ◽  
Landscape Performance ◽  
Production Practices ◽  
Growth Differences ◽  
Plastic Containers

Biodegradable and plastic containers were evaluated for greenhouse and landscape production of ‘Score Red’ geranium (Pelargonium ×hortorum), ‘Grape Cooler’ vinca (Catharanthus roseus), or ‘Dazzler Lilac Splash’ impatiens (Impatiens wallerana) at Louisiana State University (LSU), Baton Rouge, LA; Longwood Gardens (LWG), Kennett Square, PA; and University of Arkansas (UA), Fayetteville, AR. Of the 5-inch containers, the highest geranium and vinca shoot growth occurred in plastic containers compared with bioplastic and rice straw containers. Of the 4-inch containers, paper containers produced the greatest geranium shoot growth compared with the peat containers at LSU and LWG. Shoot growth in impatiens was similar for all container types at all three locations. When all container types were considered, there was no difference in the root growth of geranium or impatiens at all three locations. However, vinca had the highest root growth in paper containers compared with that in peat and coconut fiber. The root:shoot (R:S) ratio of geranium were mixed for all pot sizes, types, and locations. Vinca R:S ratio was highest in both the 4- and 5-inch plastic control containers at LSU and lowest in both plastic containers at LWG. Direct plant containers generally performed well in the landscape as the plants grown in plastic containers at LWG. Plants grown in all tested containers produced marketable plants for both the retail and landscape markets. However, growers and landscapers should be aware of growth differences that may occur when using biodegradable containers and align production practices accordingly.

scholarly journals Intensity of Anthracnose on Three Wintercreeper Euonymus Cultivars as Influenced by Fungicide Program

2009 ◽  
Vol 27 (3) ◽  
pp. 171-175
Author(s):  
Janet C. Cole ◽  
Stephanie L. Schupbach ◽  
Kenneth E. Conway
Keyword(s):  
Disease Severity ◽  
Colletotrichum Gloeosporioides ◽  
Disease Symptoms ◽  
Thiophanate Methyl ◽  
Euonymus Fortunei

Abstract Plants of three cultivars of wintercreeper euonymus (Euonymus fortunei (Turcz.) Hand.-Mazz. ‘Emerald Gaiety’, ‘Emerald ‘n Gold’ and ‘Canadale Gold’) in containers were sprayed at 7-or 14-day intervals depending on label directions with mancozeb, propiconazole, or thiophanate methyl alone or in tank mixes of two fungicides to determine efficacy in controlling anthracnose symptoms caused by Colletotrichum gloeosporioides (Penz.) Penz. & Sacc. Each fungicide was applied at the maximum label rate and half the maximum label rate when applied alone or at the maximum label rate when applied in combination. Plants were rated for disease symptoms monthly at two sites in 2002 and at one site in 2006. At Stillwater, disease ratings were typically lowest on ‘Emerald Gaiety’ and highest on ‘Emerald ‘n Gold’ on all rating dates in both years. Plants of all three cultivars and in all fungicide treatments at Stillwater had sufficient disease symptoms in July, August and September of both years to be considered nonsalable. When applied alone, mancozeb typically provided better anthracnose control than propiconazole or thiophanate methyl. Disease ratings from plants receiving any fungicide mixture were generally similar to those of plants receiving mancozeb alone. At Park Hill, disease ratings differed among cultivars only in August and September, and ratings did not differ among fungicide treatments on any rating date. Disease severity was substantially less at Park Hill than Stillwater in 2002, presumably the result of greater shade intensity and lower temperatures.

Sign in / Sign up

Export Citation Format

Share Document