Volume 2, Issue 9 (October 2005)

    Nozzle Formulation Interactions: Consequences for Spray Droplet Adhesion to Plant Surfaces

    (Received 5 November 2004; accepted 7 March 2005)

    CODEN: JAIOAD

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    Abstract

    Tests were conducted with a widely used herbicide (glyphosate) that is available in a range of formulations and a selection of commonly used nozzle types [XR TeeJet, extended range flat spray tip (XR), Turbo TeeJet, wide angle flat spray tip (TT), AI TeeJet, Air Induction spray tip (AI)] and determined the rebound characteristics of each combination using a difficult-to-wet foliar crop target (cabbage), an easy-to-wet hairy weed (velvetleaf), and a difficult-to-wet weed (lambsquarters). The rebound was determined under standard spraying conditions in a track room using a “bounce chamber” constructed at The Laboratory for Pest Control Application Technology (LPCAT). The amount of spray liquid retained and reflected from the leaf surfaces was determined by weight. The data showed that there were no significant differences between the nozzles, but that formulation differences did occur and were a reflection of surfactant level in the spray mixture. There was a significant formulation X leaf interaction and leaf X nozzle interaction, but not a formulation X nozzle interaction.


    Author Information:

    Downer, RA
    Research Scientist, Research Associate, and Research Assistant, Laboratory for Pest Control Application Technology, The Ohio State University, Wooster, OH

    Hacker, JK
    Research Scientist, Research Associate, and Research Assistant, Laboratory for Pest Control Application Technology, The Ohio State University, Wooster, OH

    Ebert, RS
    Research Scientist, Research Associate, and Research Assistant, Laboratory for Pest Control Application Technology, The Ohio State University, Wooster, OH


    Stock #: JAI12924

    ISSN: 1546-962X

    DOI: 10.1520/JAI12924

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    Author
    Title Nozzle Formulation Interactions: Consequences for Spray Droplet Adhesion to Plant Surfaces
    Symposium Pesticide Formulations and Delivery Systems: Advances in Crop Protection Technologies: 25th Volume, 2004-10-07
    Committee E35