Abstract
MORGAN1 was the first to report that few eelworm cysts are found on the roots of potato plants grown together with white mustard in pots of soil infested with the potato-root eelworm. Afterwards2 it was shown that root excretions from potato plants mixed with those from white mustard seedlings will no longer stimulate the emergence of eelworm larvæ from the cysts; this effect is also produced by black mustard, perhaps by cress, and, by certain solutions of allyl isothiocyanate, the mustard oil of black mustard seed3. Field trials with white mustard as green manure were a failure4, 5, due, it has been suggested6, to the difficulty of applying the excretions in sufficient quantity in the field; the results with allyl isothiocyanate suggested that these difficulties might be overcome, and a small-scale field trial during 1944 gave promising results.
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References
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ELLENBY, C. Control of the Potato-Root Eelworm Heterodera rostochiensis Wollenweber, by Allyl Isothiocyanate. Nature 155, 544 (1945). https://doi.org/10.1038/155544b0
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DOI: https://doi.org/10.1038/155544b0
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