PESTICIDE RESIDUES IN FOOD - 1984
Sponsored jointly by FAO and WHO
EVALUATIONS 1984
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
Rome, 24 September - 3 October 1984
Food and Agriculture Organization of the United Nations
Rome 1985
BENDIOCARB
Explanation
Bendiocarb was evaluated in 1982, at which time a temporary ADI
was estimated and a number of temporary MRLs proposed.1/ In the
absence of information on the use of bendiocarb on a number of
commodities in good agricultural practice, it was recommended that the
status of all MRLS (except maize, maize fodder and forage, sugarbeet
and sugarbeet tops) should remain temporary, regardless of the status
of the ADI, until information on good agricultural practice was
available.
Information has been provided on nationally approved uses of
bendiocarb on potatoes and rice, together with supporting residues
data.
RESIDUES IN FOOD AND THEIR EVALUATION
USE PATTERN
In Canada, bendiocarb is currently registered for use in
dwellings, food processing plants, food service establishments and
food transport vehicles; limitations include the absence or adequate
protection of food when treatment is undertaken.
Potatoes
In West Germany the use of bendiocarb as a 20 percent W.P.
formulation (20W) was registered in 1981. The dose rate is 0.12 kg
a.i./ha (0.6 kg/ha of product) with a recommended withholding period
of 14 days.
Rice
The use of a 40 percent powder formulation (40W) in Taiwan
province of China was registered in 1982, with a dose rate of
0.4 - 0.48 kg/ha and a withholding period of 15 days.
In Japan, the use of a 5 percent granular formulation in rice
seedling boxes was approved at dose rates of 3-5 g a.i./box (5 1 of
soil) applied at the transplanting stage.
Use patterns of bendiocarb in the Republic of Korea are
summarized in Table 1.
1/ See Annex 2 for FAO and WHO documentation
TABLE 1. Bendiocarb Use on Rice and Barley, Republic of Korea
Crop Application Application
period rate (kg/ha)
Nursery rice 10-14 days after seeding 3
Hand-transplanting rice Less than 7 days after puddling 4
Barley After seed moulding 4
The application method in rice consists in maintaining the level
of paddy water at about 3-4 cm deep for 3-4 days after the pesticide
application, both in the nursery and the growing field.
For barley, the recommended portions of the pesticide are
uniformly applied on upland or drained paddy field, followed by
sufficient seed moulding of more than 2-cm soil depth.
RESIDUES RESULTING FROM SUPERVISED TRIALS
Data on bendiocarb residues resulting from supervised trials on
grain, rice straw and other crops in the Republic of Korea are
reported in Table 2.
APPRAISAL
The meeting reviewed the residues data on rice from the 1982
evaluations in the light of new information on good agricultural
practice. The proposed temporary MRL of 2 mg/kg for rice in husk was
based on trial conditions which are not reflected in any current
nationally approved agricultural practices. Accordingly, the meeting
agreed to withdraw this estimate and replace it with an estimated
maximum residue level of 0.02 mg/kg for de-husked rice.
The meeting also received information on the use of bendiocarb on
potatoes in the Federal Republic of Germany and agreed that it
satisfied the requirement of the 1982 meeting for that crop.
RECOMMENDATIONS
The following maximum residue level was estimated and recommended
as suitable for use as temporary MRL. It remains temporary until the
information on GAP required by the 1982 JMPR is provided.
TABLE 2. Bendiocarb Residues in Various Crops from Supervised Trials, Republic of Korea
Crop Dosage (a.i.) Residue (mg/kg)
Unpolished Straw
Rice
Untreated <0.005 <0.01
Transplanted rice Bendiocarb+Simetryne granules 2.8 kg/ha <0.005 <0.01
Bendiocarb+Simetryne granules 2.8 kg/ha
and Bendiocarb single granules 4.0 kg/ha <0.005 <0.01
Direct-seeded rice Untreated <0.01 <0.02
under non-flooded
conditions Bendiocarb E.C. 7.5 kg/ha <0.01 <0.02
Upland rice-
unpolished rice Bendiocarb E.C. 5.0 kg/ha <0.05
Wheat Bendiocarb E.C. 3.75 kg/ha <0.009
Kidney bean Bendiocarb E.C. 5.0 kg/ha <0.02
Soy bean Bendiocarb E.C. 4.0 kg/ha <0.06
Strawberry Bendiocarb E.C. 5.0 kg/ha <0.01
Lettuce Bendiocarb E.C. 5.0 kg/ha <0.01
Source: The Government of the Republic of Korea
See Also:
Toxicological Abbreviations
Bendiocarb (Pesticide residues in food: 1982 evaluations)
Bendiocarb (Pesticide residues in food: 1984 evaluations)