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    PESTICIDE RESIDUES IN FOOD - 1981


    Sponsored jointly by FAO and WHO






    EVALUATIONS 1981







    Food and Agriculture Organization of the United Nations
    Rome

    FAO PLANT PRODUCTION AND PROTECTION PAPER 42

    pesticide residues in food:
    1981 evaluations

     the monographs

    data and recommendations
    of the joint meeting
    of the
    FAO panel of experts on pesticide residues
    in food and the environment
    and the
    WHO expert group on pesticide residues

    Geneva, 23 November-2 December 1981

    FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS
    Rome 1982


    ETHIOFENCARB

    Explanation

         Ethiofencarb was evaluated by the JMPR in 1977 and 1978*; a
    number of temporary maximum residue levels (MRLs) were proposed,
    including figures for beans and sugarbeet. Further data on these crops
    have become available and are summarized below.

    RESIDUES IN FOOD

    RESIDUES RESULTING FROM SUPERVISED TRIALS

    Sugarbeet

         Table 1 summarizes and combines residues data from two extensive
    trials in the Netherlands in 1979. Application was at 0.5 kg a.i./ha.

    TABLE 1.  Residues of ethiofencarb in sugarbeet
                                                                    

    Days after                Residues in mg/kg1
    application      Roots                       Leaves
                                                                    

        0            0.03, 0.03, 0.02, 0.02      11, 19, 19, 22
       14            0.05, 0.06                  4.7, 7.4
       21            0.07, 0.02                  2.4, 4.6
       28            0.09, 0.12, 0.01, 0.01      1.1, 2.1, 1.5, 2.0
       35            0.08, 0.14, 0.02, 0.01      3.7, 5.1, 1.0, 1.2
       42            0.10, 0.13                  3.6, 5.9
       46           <0.01, <0.01                 0.8, 2.0
       49            0.06, 0.08                  1.0, 1.1
       84            0.01, <0.01                 0.31, 0.35
      112           <0.05                       <0.05
                                                                    

    1  including sulphoxide and sulphone.

         Table 2 summarizes and combines results from six trials on beans
    with pod, all at rate of 0.45 kg a.i./ha, but using several formulated
    products. The mean results in Table 2 are the means of six samples
    analysed in duplicate.

              

    *  See Annex II for FAO and WHO documentation.

    TABLE 2.  Residues of ethiofencarb in beans with pod
                                                                   

                                  Residues in mg/kg1
    Days after                                                     
    application         Range                    Mean of 12 results
                                                                   

      0                 0.1 - 2.06               0.75
      1                 0.07 - 1.38              0.56
      4                 0.04 - 1.10              0.45
      7                 0.04 - 0.43              0.28
     10                 0.03 - 0.51              0.24
    106
    (dry bean)         < 0.05                   < 0.05
                                                                   

    EVALUATION

    APPRAISAL

         The data support the existing proposals for MRLs namely:

         Sugarbeet                0.1       14 days post-treatment
         Sugarbeet leaves         10        14 days post-treatment
         Bean with pod            10        4 to 7 days post-treatment

    REFERENCES

    Bayer, A.G. Results of pesticide residue trials. (Unpublished)
    1981





    See Also:
       Toxicological Abbreviations
       Ethiofencarb (ICSC)
       Ethiofencarb (Pesticide residues in food: 1977 evaluations)
       Ethiofencarb (Pesticide residues in food: 1978 evaluations)
       Ethiofencarb (Pesticide residues in food: 1980 evaluations)
       Ethiofencarb (Pesticide residues in food: 1982 evaluations)
       Ethiofencarb (Pesticide residues in food: 1983 evaluations)