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 (Unpublished)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