Abstract
THE use of a highly refined petroleum oil for application to orchard trees as an insecticide and acaricide is firmly established as a valuable pest-control treatment with citrus, but its use on deciduous trees in summer is limited by the fact that, under certain ill-defined conditions, severe leaf and fruit-drop has been known to occur following the use of a'summer' petroleum spray.
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COLE, L., HEELEY, W. Prevention of Oil Shock in the Orchard. Nature 159, 32 (1947). https://doi.org/10.1038/159032a0
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DOI: https://doi.org/10.1038/159032a0
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