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    ETHIOFENCARB      JMPR 1978

    Explanation

         Ethiofencarb was evaluated by the Joint Meeting in 1977
    (FAO/WHO, 1978b). Further data from supervised trials on other
    crops were considered desirable. Some additional data have been
    provided and are evaluated below.

    RESIDUES IN FOOD AND THEIR EVALUATION

    RESIDUES RESULTING FROM SUPERVISED TRIALS

         New data are summarized in Table 1. Sweden reported the
    registration of the compound in potatoes, broad beans, vegetables
    (0.5 kg a.i./ha) and in orchard crops (0.05%) with a pre-harvest
    interval of 21 days.

    APPRAISAL

         The data from additional supervised trials support the
    recommendations of the previous evaluation. Maximum residue limits
    for new commodities cannot be proposed.

    FURTHER WORK OR INFORMATION

    Desirable

    1.   Further residue data from supervised trials on crops on which
    ethiofencarb is know to be used.

    REFERENCES

    Anonymous Bayer Pflanzenschutzmittel-Rückstände 1977 (Nos. 2000a,
    (1977)              2000b, 2037, 2038, 2039, 2041, 2048, 2049,
                        2067, 2068, 2069, 2070, 2073, 2075).
                        Unpublished reports submitted to meeting.

    Anonymous Submission from the Netherlands delegation of CCPR.
    (1978)

    Anonymous Nihon Tokushu Noyaku Seizo K.K. Analytical Test Results
    (No.                473, 474). Unpublished results submitted to
                        meeting.

    FAO/WHO 1977 evaluations in some pesticide residues in food.
    (1978b)


    
    TABLE 1. Residues resulting from supervised trials with ethiofencarb (Croneton 50 EC) in 1976-77.

                                                                                                                                    

    Crop                Application          Residues (mg/kg) at intervals (days) after application
                        Rate,                                                                                                       
                        kg a.i./ha (No. of
                        applications)        0       1       4       7       10-13    16-23   33-36    42-46    52      77       91
                                                                                                                                    

    Bean (runner,             0.6
    with pod)                 (2)            1.95    1.35    1.42    1.45

    Bean (broad)              0.3            0.04    0.05    0.05    0.04    0.04
                              (2)            0.42    0.38    0.22    0.19    0.07

    Stalk & leaves                           6.9     5.7     4.9     3.8     2

    Fodder beet               0.5                                            0.13             0.11
                              (4)                                            1.9              0.95
    Cabbage (white            0.3
    head)                     (2)            0.1     0.07    0.09    0.07

    Japanese
    radish root               1                                              0.08     0.06
       leaf                   (3)                                            1.62     0.3
       root                   2                                                       2.48
       leaf                   (1)
       root                   2                                                                        0.04     0.02
       leaf                   (2)                                                                      0.11     0.07
       root                   2                                                               0.6      0.6
       leaf                   (3)                                                             0.16     0.018
       root                   2                                                       0.1     0.05
       leaf                   (4)                                                     0.22    0.19

    Kale                      0.3            20.9    9.6     8.2     6.6
                              (2)

    TABLE 1. (Cont'd)
                                                                                                                                    

    Crop                Application          Residues (mg/kg) at intervals (days) after application
                        Rate,                                                                                                       
                        kg a.i./ha (No. of
                        applications)        0       1       4       7       10-13    16-23   33-36    42-46    52      77       91
                                                                                                                                    

    Red currant               1              1.39    1.22    1.09    0.74    0.47
                              (2)            3.05    1.5     1.44    1.52    1.21
                                             7.5     5.9     4       2.6     1.7

    Sugarbeet                 0.5                                                     0.05                              0.04     0.02
                              (1)                                                     0.05                              0.06     0.02
                                                                                      0.96                              1.22     0.25

    Wheat                     0.25                                                                     0.02(1)
                              (1)
                                                                                                                                    

                                             0       7       14      91      111      124     128
                                                                                                                                    

    Brussel
    sprouts (2)         0.5                  0.45    0.5     0.6
                        (1)

    Potatoes            1.5                                          <0.02   0.15     0.03
    (in plant hole      (1)                                          <0.02   <0.02    <0.02
    at planting)(3)                                                  <0.02   <0.02    <0.02
                        1.5                                                                   0.03
                        (1)                                                                   <0.02
                                                                                                                                    

    (1) Mean of three experiments at different locations
    (2) The trial was carried out in 1972
    (3) A granulate (10% a.i.) was applied
        


    See Also:
       Toxicological Abbreviations
       Ethephon (Pesticide residues in food: 1977 evaluations)
       Ethephon (Pesticide residues in food: 1983 evaluations)
       Ethephon (Pesticide residues in food: 1993 evaluations Part II Toxicology)
       Ethephon (JMPR Evaluations 2002 Part II Toxicological)