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  • MACHINE ELEMENTS AND PROCESSES  (1)
  • insecticide  (1)
  • 1
    ISSN: 1573-8248
    Keywords: Onion maggot ; Delia antiqua ; Anthomyiidae ; pesticide impact ; natural enemies ; herbicide ; insecticide
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Résumé Les différences de mortalité induites par les produits phytosanitaires entreDelia antiqua et plusieurs organismes antagonistes associés à sa limitation naturelleD. platura (MEIGEN),Coenosia tigrina (F.),Entomophtora muscae (COHK) etAphaereta pallipes (SAY) ont été évaluées dans des conditions simulant celles des cultures. Les mortalités différentes dues à l'action directe ou résiduelle des produits sont décrites pour trois herbicides (Chloro-IPC, Nitrofen et CDAA), trois fongicides (Maneb, Chlorothalonil et Sulfate de Cuivre) et un insecticide (Malathion). Les taux d'application pratique recommandés de ces produits entraînent des différences hautement positives dans les niveaux de mortalité entreD. antiqua et quelques-uns de ses agents de mortalité naturelle. Le Chloro-IPC, herbicide de préplantation et de demi-saison, provoque la mortalité totale d'A. pallipes au-delà des trois jours qui constituent la période test pour les résidus. Des modifications d'orientation comportementale et des modalités de la mort des adultes deD. antiqua infestés parE. muscae ont été aussi notées chez les mouches traitées au Malathion de sorte que la dispersion des conidies était hautement réduite.
    Notes: Abstract Pesticide-induced differential mortality betweenDelia antiqua(MEIGEN)and several other organisms associated with its natural control [D. platura(MEIGEN),Coenosia tigrina (F.),Entomophtora muscae (COHN), andAphaereta pallipes (SAY)] were evaluated under simulated field conditions. Direct and residual differential mortalities were described for 3 herbicides (Chloro-IPC, nitrofen, and CDAA), 3 fungicides (maneb, chlorothalonil, and copper sulfate), and 1 insecticide (malathion). The recommended field application rates of these chemicals produced high positive differential mortality levels betweenD. antiqua and some of the natural mortality agents. Chloro-IPC, a preplant and midseason herbicide, induced 100% mortality ofA. pallipes over the 3-day residual test period. Modifications in behavioral orientation and death patterns ofD. antiqua adults infected withE. muscae were also noted in malathion-treated flies such that subsequent conidial dispersal was highly restricted.
    Type of Medium: Electronic Resource
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  • 2
    Publication Date: 2019-07-13
    Description: Determination of the nature and degree of contamination of mirrors in a vacuum environment in the presence of UV irradiation by outgases from some materials that are candidates for use inside spacecraft and simulated spacecraft environments. A vacuum apparatus was developed for testing contamination of mirrors. Offgases from heated test materials are deposited on a refrigerated mirror, half of which is UV irradiated. Reflectance is measured between 1100 and 25,000 A. Thermofit RNF-100, insulated wire TRT-24-19-V-93, and Eccofoam FS and FPH gave heavier deposits on the nonirradiated mirror. Moxness MS60 SO8, Scotch Tape Y-9050, RTV-577, RTV-41, Stycast 1090, and Epon 934 and 828 gave heavier deposits on the irradiated mirror. Raychem wire 44/0411, polyimide tape X1156, Insulgrease G-640, High Vacuum Silicone Grease, and RTV-602 gave only slight deposits on the irradiated and nonirradiated areas of the mirror.
    Keywords: MACHINE ELEMENTS AND PROCESSES
    Type: AIAA PAPER 72-267 , American Institute of Aeronautics and Astronautics, Thermophysics Conference; Apr 10, 1972 - Apr 12, 1972; San Antonio, TX
    Format: text
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