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  • Chemistry  (1)
  • Lepidoptera  (1)
  • acid soils  (1)
  • eye-spotted bud moth  (1)
  • 1
    Digitale Medien
    Digitale Medien
    Springer
    Plant and soil 146 (1992), S. 55-59 
    ISSN: 1573-5036
    Schlagwort(e): acid soils ; low pH ; Triticum aestivum ; wheat
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Abstract Shoot length (cm), shoot fresh weight (g/pot), root length (cm), and root fresh weight (g/pot) were measured on six cultivars of wheat (Triticum aestivum L. cv Saluda, C9733, Gore, Stacy, FL301, and FL302) grown at pH 6.0, 5.5, 5.0, 4.5, or 4.0 for 14 days in ‘white quartz flintshot’ sand. Plants were watered on alternate days with pH-adjusted buffer solutions. All measured plant parameters decreased as H+ concentration increased from pH 6.0 to 4.0. Decreased lengths of shoots and roots were similar among the cultivars as the pH decreased. This indicated a uniform response of wheat cultivars to excess H+ concentration in the soil solution; however, the decrease in shoot and root length was only about 50% as large as was previously reported for sorghum [Sorghum bicolor (L.) Moench.].
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    ISSN: 1573-1561
    Schlagwort(e): Lepidoptera ; Tortricidae ; Spilonota ocellana ; eye-spotted bud moth ; sex pheromone ; (Z)-8-tetradecenyl acetate and (Z)-8-tetradecenyl alcohol
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie
    Notizen: Abstract Response of male eye-spotted bud moth,Spilonota ocellana (Denis and Schiffermüller), to different ratios of synthetic sex pheromone components, (Z)-8-tetradecenyl acetate (Z8-14:OAc) and (Z)-8-tetradecenyl alcohol (Z8-14:OH), were compared in four North American locations and in one location in The Netherlands. In British Columbia, Nova Scotia, Michigan, and The Netherlands, a 99:1 blend ofZ8-14:OAc andZ8-14:OH captured significantly more maleS. ocellana thanZ8-14:OAc alone or binary blends containing 10–50%Z8-14:OH. In Ontario, where population sizes were low compared to the other four locations, trends in trap catches were similar, and there was no indication that maleS. ocellana responded differently to the tested pheromone blends. A 99:1 blend ofZ8-14:OAc andZ8-14:OH should be most effective in pheromone-based control programs ofS. ocellana in North America and in The Netherlands. Our results confirm earlier studies that a 99:1 blend ofZ8-14:OAc andZ8-14:OH captures significantly more maleS. ocellana thanZ8-14:OAc alone. However, our finding that a 99:1 blend ofZ8-14:OAc andZ8-14:OH is significantly more attractive than binary blends containing 10–50%Z8-14:OH differs from previous findings in Germany and Switzerland.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    ISSN: 0022-3832
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Physik
    Notizen: 1- and 2-Chloroanthracenes have been copolymerized with butadiene in the Mutual recipe and in the Mutual recipe with some added benzene. Using charging ratios of 90 parts of butadiene and 10 parts of chloroanthracene in the absence of benzene, the incorporation of the 1 isomer at 62% conversion is 16.9% and the incorporation of the 2 isomer at 80% conversion is 7.3%. In the presence of added benzene (5 ml. to 84 g. charge) the incorporation of the 1 isomer is 21.2% at 39% conversion and the incorporation of the 2 isomer is 9.4% at 53% conversion. The anthracene derivative is incorporated in the polymer chain through the meso positions.
    Zusätzliches Material: 2 Ill.
    Materialart: Digitale Medien
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