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withdrawn.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.