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    PESTICIDE RESIDUES IN FOOD - 1980


    Sponsored jointly by FAO and WHO






    EVALUATIONS 1980





    Joint meeting of the
    FAO Panel of Experts on Pesticide Residues
    in Food and the Environment
    and the
    WHO Expert Group on Pesticide Residues
    Rome, 6-15 October 1980




    FENAMIPHOS

    Explanation

    Penamiphos was evaluated by the 1974, 1977, and 1978 Joint Meetings
    (FAO/WHO 1975a, 1978a, 1979a).  From the 1977 evaluations it was
    required (by 1980) that data be provided on residues in or on
    citrus fruits other than oranges and on tomatoes.  It was
    considered desirable to have residue data for raw agricultural
    products moving in commerce and for further data from supervised
    trials on different crops, especially beans, cucumbers, lettuce,
    peppers and strawberries.

    Use pattern and residue data were received from New Zealand
    (private communication) which updated and replaced that provided in
    1974 and 1977.

    RESIDUES IN FOOD

    USE PATTERN

    TABLE 1.  New or revised data on uses of fenamiphos as 40% EC
    in New Zealand.

                                                                  
    Crop         Pest            Application Rate
                                                                  

    Tomatoes     Root lesion     8.8-10 kg
    Carrots      nematodes       ai/200-300 l/ha.
    Tobacco                      Preplant
                                 soil-incorporated
                                 treatment
    Tobacco      Root lesion     As above or 7-6.8
                 nematodes       kg/ai/ha preplant
                                 plus 2.8 kg ai/ha
                                 as a post-planting
                                 band spray 5-6
                                 weeks after planting
    Lucerne      Root knot       8.8-10 kg ai/200-300
                 nematodes       l/ha as a foliar
                                 spot treatment
                                                                  

    RESIDUES RESULTING FROM SUPERVISED TRIALS

    TABLE 2.  New or revised data from New Zealand on residues of
    fenamiphos in various crops

                                                                           
                                             Pre-harvest      Residues at
    Crop         Application rate            interval, days   harvest, mg/kg

    Carrots      8 kg ai/ha (preplant)              76             0.03
                                                    98             n.d.1
                 12 kg ai/ha (preplant)             76             0.05
                                                    98             n.d.
    Tomatoes     8 kg ai/ha (preplant)              97             n.d.
    Kiwi-fruit   8 kg ai/ha (soil drench)          185             n.d.
                 16 kg ai/ha (soil drench)         185             n.d.
    Tobacco      12 kg ai/600 l/ha                  88             n.d.
                 preplant
                 7 kg ai/ha preplant                42             n.d.
                 plus 2.5 kg ai/ha band
                 spray after planting
                                                                           

    1 Limit of detection - 0.02 mg/kg.

    NATIONAL TOLERANCES REPORTED TO THE MEETING

    New Zealand

    Root vegetables, tomatoes  0.2 mg/kg


    EVALUATION

    APPRAISAL

    Residue data were received from New Zealand, which were consistent
    with the Codex temporary residue limit for tomatoes of 0.2 mg/kg
    and indicate that the limit of 0.2 mg/kg for carrots proposed in
    1978 is adequate.  Data were also provided for residues in kiwi
    fruit (<0.02 mg/kg, the limit of detection).

    No required data were received on residues in citrus fruits other
    than oranges and therefore the temporary MRL from 1977 should be
    withdrawn.


    RECOMMENDATIONS OF RESIDUE LIMIT

    The meeting recommended that the temporary maximum residue limit
    for citrus fruit (other than oranges) be withdrawn for lack of
    supporting data.  The temporary maximum residue limit for tomatoes
    of 0.2 mg/kg is adequate and should no longer be temporary.  On the
    basis of residue data provided by New Zealand the following maximum
    residue level for kiwi fruit is proposed as suitable for
    establishing a maximum residue limit in addition to existing
    limits.

                                                                       
    Commodity      Estimated maximum      Pre-harvest Interval on
                  residue level, mg/kg    which the EMRL is based, days
                                                                       

    Kiwi fruit           0.051                    185
                                                                       

    1 At or about the limit of determination.

    


    See Also:
       Toxicological Abbreviations
       Fenamiphos (ICSC)
       Fenamiphos (WHO Pesticide Residues Series 4)
       Fenamiphos (Pesticide residues in food: 1977 evaluations)
       Fenamiphos (Pesticide residues in food: 1978 evaluations)
       Fenamiphos (Pesticide residues in food: 1985 evaluations Part II Toxicology)
       Fenamiphos (Pesticide residues in food: 1987 evaluations Part II Toxicology)
       Fenamiphos (Pesticide residues in food: 1997 evaluations Part II Toxicological & Environmental)
       Fenamiphos (JMPR Evaluations 2002 Part II Toxicological)