Pesticide usage in Scotland: Outdoor Vegetable Crops 2021

This publication presents information from a survey of pesticide use on outdoor vegetable crops in Scotland during 2021.


Table 16 Mode of action/chemical group of herbicide active substances - 2021

Area (ha) and weight (kg) of active substances for all crops

Mode of action Active substance Chemical group HRAC group Total vegetables Total vegetables
ha kg
Inhibition of acetyl CoA carboxylase Fluazifop-P-butyl Aryloxyphenoxy-propionates (FOPs) 1 301 38
  Propaquizafop Aryloxyphenoxy-propionates (FOPs) 1 442 60
  Clethodim Cyclohexanediones (DIMs) 1 1,376 228
  Cycloxydim Cyclohexanediones (DIMs) 1 247 81
All inhibition of acetyl CoA carboxylase       2,365 406
Inhibition of acetolactate synthase ALS Imazamox Imidazolinone 2 11,186 654
All inhibition of acetolactate synthase ALS       11,186 654
Inhibition of microtubule assembly Pendimethalin Dinitroanilines 3 16,101 15,788
  Propyzamide Benzamides 3 84 118
All inhibition of microtubule assembly       16,185 15,906
Auxin mimics Clopyralid Pyridine-carboxylates 4 1,122 251
  Fluroxypyr Pyridyloxy-carboxylates 4 109 7
  MCPB Phenoxy-carboxylates 4 1,311 1,244
All auxin mimics       2,542 1,503
ha kg
Inhibition of photosynthesis at photosystem II (-serine 264 binders) Metribuzin Triazinones 5 3,767 512
All inhibition of photosynthesis at photosystem II (-serine 264 binders)       3,767 512
Inhibition of photosynthesis at photosystem II (-histidine 215 binders) Bentazone Benzothiadiazinone 6 1,935 1,776
  Bromoxynil Nitriles 6 218 6
All inhibition of photosynthesis at photosystem II (-histidine 215 binders)       2,152 1,782
Inhibition of EPSP synthase Glyphosate Glycine 9 2,677 2,870
All inhibition of EPSP synthase       2,677 2,870
Inhibition of phytoene desaturase Diflufenican Phenyl ethers 12 534 29
All inhibition of phytoene desaturase       534 29
Inhibition of deoxy-D-xyulose phosphate synthase Clomazone Isoxazolidinone 13 4,894 296
All inhibition of deoxy-D-xyulose phosphate synthase       4,894 296
Inhibition of VLCFAs Dimethenamid-P α-chloroacetamides 15 446 322
  Metazachlor α-chloroacetamides 15 4,380 2,880
  S-metolachlor α-chloroacetamides 15 183 107
  Prosulfocarb Thiocarbamates 15 264 409
All inhibition of VLCFAs       5,272 3,718
ha kg
Inhibition of cell wall synthesis Isoxaben Benzamides 29 30 4
All inhibition of cell wall synthesis       30 4
Inhibition of solanesyl diphosphate synthase Aclonifen Diphenyl ether 32 1,934 1,230
All inhibition of solanesyl diphosphate synthase       1,934 1,230
All herbicides       53,539 28,910
Area grown 22,066

Note: Active substances have been grouped by their mode of action. Full details on mode of action classification can be found on the Herbicide Resistance Action Committee (HRAC) webpage(10).

Contact

Email: psu@sasa.gov.scot

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