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. 2019 Jan 31;17(1):e05570. doi: 10.2903/j.efsa.2019.5570
Primary crops (available studies) Crop groups Crop(s) Application(s) Sampling (DAT)
Fruit crops Apples Foliar, 375 g a.s./ha 0, 14
Tomatoes Foliar, 0.25 kg/ha 4, 7, 14, 21
Eggplants Soil granules, 400 g/ha 14, 35, 49, 67, 69
Root crops Potatoes Soil granules, 1250 g/ha 129
Foliar, 134 g/ha 7, 28, 64
Leafy crops Tobacco 1 Soil and 3 foliar, 740 g/ha (total rate) 14
Cereals/grass crops Rice Soil granules, 500 g/ha 79
Seed (nursery box), 320 and 1260 g/ha with 200 box/ha 65, 124
Maize Seed, 721 g/100 kg seeds 33, 61, 134
Pulses/oilseeds Cotton Seed, 460 g/100 kg seeds 211

Metabolism studies with [Pyridinyl‐14C‐methylene]‐imidacloprid only, considered acceptable

Source: Germany (2005)

Rotational crops (available studies) Crop groups Crop(s) Application(s) PBI (DAT)
Root/tuber crops Red beet Bare soil, 454 g a.s./ha 30, 120, 271
Leafy crops Swiss chards Bare soil, 454 g a.s./ha 30, 120, 271
Cereal (small grain) Wheat Bare soil, 454 g a.s./ha 30, 120, 271
Source: Germany (2005)
Processed commodities (hydrolysis study) Conditions Investigated?
Pasteurisation (20 min, 90°C, pH 4) Yes
Baking, brewing and boiling (60 min, 100°C, pH 5) Yes
Sterilisation (20 min, 120°C, pH 6) Yes
Source: Germany (2005)
Can a general residue definition be proposed for primary crops? Yes
Rotational crop and primary crop metabolism similar? Yes
Residue pattern in processed commodities similar to residue pattern in raw commodities? Yes
Plant residue definition for monitoring (RD‐Mo)

All plant commodities with exception of pulses and oilseeds: Imidacloprid

Pulses and oilseeds: Imidacloprid (tentative, pending submission of trials supporting the import tolerances on dry beans, peanuts, beans and peas without pods)

Plant residue definition for risk assessment (RD‐RA) Sum of imidacloprid and its metabolites containing the 6‐chloropyridinyl moiety, expressed as imidacloprid
Conversion factor (monitoring to risk assessment) See Appendix B.1.2.1
Methods of analysis for monitoring of residues (analytical technique, crop groups, LOQs)
High water content, high acid content, dry commodities:
  • QuEChERS (HPLC–MS/MS)
  • LOQ: 0.01 mg/kg
  • Source: Germany (2015)
High oil content commodities:
  • HPLC–MS/MS
  • LOQ: 0.02 mg/kg
  • Source: Germany (2008)
Hops:
  • HPLC–MS/MS
  • LOQ: 0.2 mg/kg
  • Source: Germany (2008)
Coffee beans (validated in cocoa beans):
  • HPLC–MS/MS
  • LOQ: 0.01 mg/kg
  • ILV and confirmatory method not available
  • Source: Germany (2015)

According to the EURLs, during routine analyses an LOQ of 0.01 mg/kg is achievable in the four main matrices (EURLs, 2016)

a.s.: active substance; DAT: days after treatment; PBI: plant‐back interval; QuEChERS: Quick, Easy, Cheap, Effective, Rugged, and Safe; HPLC–MS/MS: high‐performance liquid chromatography with tandem mass spectrometry; LOQ: limit of quantification; ILV: independent laboratory validation.