809,613 research outputs found

    Response of Corn and Palmer amaranth to Mesotrione

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    Mesotrione is a herbicide used for the selective pre- and post-emergence control of a wide range of broadleaf and grass weeds in corn (Zea mays). It inhibits the enzyme 4-hydroxyphenylpyruvate dioxygenase (HPPD) which leads to stop biosynthesis of plastoquinone, a key factor in the synthesis of carotenoid pigment. The depletion of carotenoids leading to bleaching symptoms followed by necrosis in sensitive plants. Palmer amaranth (Amaranth Palmeri) is one of the major weeds in corn production system. This study was conducted to test the hypothesis that mesotrione may be effective to control Palmer amaranth and safe for use in corn. Therefore, the objective of this research was to evaluate response of corn and Palmer amaranth to mesotrione. Corn and Palmer amaranth plants were treated with mesotrione at 105 g ai ha-1,and plant survival data was collected at 3 week after application. There was no injury reported to any of the corn plant, and plant survival rate was reported 100%. However, Palmer amaranth plants showed bleaching symptoms followed by necrosis and plant death. Only 12.5% Palmer amaranth plants survived after mesotrione application. These results demonstrated the tolerance of corn and sensitivity of Palmer amaranth to mesotrione

    Eva Palmer-Sikelianos Dances Aeschylus: The Politics of Historical Reenactment when Staging the Rites of the Past

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    Eva Palmer-Sikelianos (1874–1952), along with her husband, the poet Angehlos Sikelianos, founded the first modern Delphic Festival in 1927 in an effort to revive the Ancient Greek rites that took place on that spot over 2,500 years before. She invited “overseers of culture” from around the globe to convene in the holy city of Delphi for a reenactment of the performance of Prometheus Bound by Aeschylus in the ancient amphitheater, an Olympic-styled athletic contest, and an exhibition of Greek crafts. This paper explores Palmer-Sikelianos’s choreography, music and dramaturgy for her reconstructed Prometheus Bound in light of her own research on ancient Greek culture and our modern theories of historical reenactment. Based on silent film records of Palmer-Sikelianos’s 1930 festival, her own autobiography, her collaborations with Natalie Barney on Greek-themed theatricals in the early 1900s, and comparisons to the movement vocabulary and other contemporary stagings of ancient Greek festivals and sport, I demonstrate how Palmer- Sikelianos blended the oldest sources on ancient Greek ritual music and dance that she could find with what she saw as an authentic “spirit” of Greek culture as observed in modern Greek society. Compared to the Ballets Russes’s reenactment of ancient Greece, Palmer-Sikelianos’s project to reenact “authentic” Greek theater and choreography illustrates that theories of theatrical historical reconstruction in the early twentieth century were heavily influenced by contemporary theatrical, political, and social events. And like the Fokine and Nijinsky models, Palmer-Sikelianos’s staging redefines ancient dance through the prisms of ancient sources and modern aesthetics

    Circular 71

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    A comparative yield trial with 24 named varieties and numbered selections of potatoes was conducted at the University of Alaska Fairbanks, Agricultural and Forestry Experiment Station’s Palmer Research Center during the 1988 growing season. The trial was conducted at the Matanuska Research Farm, located six miles west of Palmer on Trunk Road. Nonirrigated trials have been conducted annually since 1982, and irrigated trials started in 1985. Results of previous trials have been recorded in AFES Circulars 49, 54, 58 and 65. These circulars are available at the Agricultural and Forestry Experiment Station offices in Fairbanks and Palmer.Introduction -- Matanuska Farm Yield Trials: Cultural Practices - Environmental Conditions, Results and Discussion; Trials at Other Locations in Alaska: General Procedures; Specific Site Information: Ambler, Delta Junction, Kake, Kenai - Soldotna, Kodiak, Kotzebue, Palmer, Pt. MacKenzie -- LIST OF TABLE

    Circular 118

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    A yield trial comparing 30 cultivars of potatoes (Solatium tuberosum L.) was conducted during the 1999 growing season at the University of Alaska Fairbanks, Agricultural and Forestry Experiment Station’s (AFES) Palmer Research Center, Matanuska Farm, located six miles west of Palmer, Alaska. Similar to 1998, this trial included irrigated but not irrigated treatments. Data from previous studies has documented the consistent need for irrigation as well as the magnitude of increases in yield that can be realized through irrigation

    Circular 97

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    A yield trial in which 43 named varieties and one numbered selection of potatoes were compared was conducted during the 1993 growing season at the University of Alaska Fairbanks, Agricultural and Forestry Experiment Station’s Palmer Research Center, Matanuska Farm, located six miles west of Palmer, Alaska.Potato Variety Performance -- Introduction -- Matanuska Farm Yield Trials: Cultural Practices and Environmental Conditions; Results and Discussion -- Trials at Other Locations in Alaska: General Procedures; Site-Specific Information; Delta Junction; Fairbanks; Homer; Kenai-Soldotna; Nom

    Managing Alaska Soils

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    This publication is for the gardener who wants to gain a more thorough understanding of soil basics, including soil components, texture, structure, water permeability and chemistry. There is also information on soil fertility and plant nutrients.This publication replaces the following Extension publications: Soil Fundamentals by C.L. Johnson, former Extension Assistant, Palmer Research Station, University of Alaska Fairbanks and Soil Fertility Basics and Soil Sampling and Analysis by J.L. Walworth, former Soil Scientist, Agricultural and Forestry Experiment Station, Palmer Research Center, University of Alaska Fairbanks

    Circular 65

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    A comparative yield trial with thirty-six named varieties and numbered selections of potatoes was conducted at the University of Alaska Fairbanks, Agricultural and Forestry Experiment Station’s (AFES) Palmer Research Center during the 1987 growing season. The trial was conducted at the Matanuska Research Farm, located 6 miles west o f Palmer on Trunk Road. Nonirrigated trials have been conducted each year beginning in 1982, and irrigated trials were begun in 1985. Results of previous trials have been recorded in Circulars 49, 54, and 58, available at the Agricultural and Forestry Experiment Station offices in Fairbanks and Palmer. Varieties with a history of commercial production in the Matanuska Valley (including 'Alaska 114', 'Bakeking', 'Green Mountain', 'Kennebec', and 'Superior') are included and serve as a comparative base for newly developed varieties, numbered selections, or older varieties that heretofore have not been tested at this location. Varieties that com pare favorably with the above-listed standards may warrant some consideration by commercial growers. Also included in this report are the results of abbreviated versions of the AFES potato yield trial that were conducted by cooperating individuals and agencies at nine locations throughout the state.Introduction -- Matanuska Farm Yield Trials: Cultural Practices and Environmental Conditions, Results and Discussion -- Trials at Other Locations in Alaska: General Procedures, Specific Site Information: Ambler, Copper Center, Delta Junction, Fairbanks, Kake, Kenai and Soldotna, Kodiak, Kotzebue, Palmer, Trapper Cree

    Circular 103

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    A yield trial in which 44 named varieties and one numbered selection of potatoes were compared, was conducted during the 1994 growing season at the University of Alaska Fairbanks, Agricultural and Forestry Experiment Station’s (AFES) Palmer Research Center, Matanuska Farm, located six miles west of Palmer, Alaska.Potato Variety Performance -- Introduction -- Matanuska Farm Yield Trials: Cultural Practices and Environmental Conditions; Results and Discussion -- Trials at Other Locations in Alaska: General Procedures; Site-Specific Information: Delta Junction, Fairbanks, Juneau, Kenai-Soldotna, Nome, Pt. MacKenzi

    Chaos and Shadowing Lemma for Autonomous Systems of Infinite Dimensions

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    For finite-dimensional maps and periodic systems, Palmer rigorously proved Smale horseshoe theorem using shadowing lemma in 1988. For infinite-dimensional maps and periodic systems, such a proof was completed by Steinlein and Walther in 1990, and Henry in 1994. For finite-dimensional autonomous systems, such a proof was accomplished by Palmer in 1996. For infinite-dimensional autonomous systems, the current article offers such a proof. First we prove an Inclination Lemma to set up a coordinate system around a pseudo-orbit. Then we utilize graph transform and the concept of persistence of invariant manifold, to prove the existence of a shadowing orbit
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