Abstract
PRELIMINARY trials during the past two years, which aimed at replacing costly cultivations in root crops by chemical methods of weed control, have now been completed at Jealott's Hill. iso-Propylphenylcarbamate, ‘Methoxone’ (2,methyl-4,chlorophenoxyacetic acid) and 2,4-dichlorophenoxyacetic acid were known to prevent the germination of certain plant species when applied as pre-emergence dressings1,2, and the species response to iso-propylphenylcarbamate was different from that of the other two compounds. Therefore, mixtures of iso-propylphenylcarbamate with ‘Methoxone’ and with 2,4-dichlorophenoxyacetic acid were examined alongside pre-emergence dressings of the individual components.
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