ETHION JMPR 1975
Explanation
Ethion was evaluated by the Joint Meeting in 1972 (FAO/WHO, 1973)
and a residue limit of 2 mg/kg was recommended for melons. At the 8th
Session of the Codex Committee on Pesticide Residues it was pointed
out that in the monograph, no residue data were presented for melons
(Alinorm 76/24, para. 121).
Some data on ethion residues on melons were made available to the
Meeting.
RESIDUES RESULTING FROM SUPERVISED TRIALS
The data available to the Meeting are summarized below:
Rate of
application No. of Pre-harvest Residue1
(kg/ha) treatments interval (days) (Mg/kg)
1 1 0 0.09 - 0.21 (3)
1 1 3 <0.05 - 0.09 (4)
1 1 7 <0.05 - 0.07 (3)
0.2 1 10 <0.05 (1)
1 - 1.2 1 15 <0.05 - 0.05 (4)
1 1 21 <0.02 (2)
1 Figures in parenthesis are the number of samples
The 1968 report of the Joint Meeting (FAO/WHO, 1969) showed
residue data for one sample of melons harvested 11 days after one
treatment with ethion at the rate of 1.25 kg/ha. The residue level was
0.07 mg/kg. No further information was available to the Meeting.
APPRAISAL
The CCPR referred to the Joint Meeting a request that the 2 mg/kg
practical residue limit for ethion residues in melons be re-evaluated
in the light of available data. Some data on ethion residues in melons
was submitted to the meeting. On the basis of this new information,
the Joint Meeting concluded that a maximum residue limit for ethion of
0.2 mg/kg on melons could be recommended.
Apparently an error occurred in the preparation of the 1972
Monograph because the recommendations for residue limits reads
practical residue limits. This should read tolerances since an ADI was
allotted.
RECOMMENDATIONS
The following revised maximum residue limit is recommended for
ethion and its oxygenanalogue expressed as ethion.
Commodity Maximum residue
limit
mg/kg
Melons 0.2