Pesticide usage - arable crops and potato stores 2018: survey results

Information from a survey of pesticide use on arable crops and potato stores in Scotland during 2018.

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Table 21: Mode of action/chemical group of herbicide/desiccant active substances on all arable crops – 2018

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

Mode of Action Active substance Chemical Group HRAC Group Total Arable 2018 Total Arable 2018
ha kg
Inhibition of acetyl CoA carboxylase Clodinafop-propargyl Aryloxyphenoxy-propionate 'FOPS' A 9,815 272
  Fenoxaprop-P-ethyl Aryloxyphenoxy-propionate 'FOPS' A 9,258 532
  Fluazifop-P-butyl Aryloxyphenoxy-propionate 'FOPS' A 2,243 211
  Propaquizafop Aryloxyphenoxy-propionate 'FOPS' A 12,403 635
  Quizalofop-P-ethyl Aryloxyphenoxy-propionate 'FOPS' A 4,690 177
  Quizalofop-P-tefuryl Aryloxyphenoxy-propionate 'FOPS' A 2,461 76
  Cycloxydim Cyclohexanedione 'DIMS' A 2,446 468
  Pinoxaden Phenylpyrazoline A 48,042 1,167
All Inhibition of acetyl CoA carboxylase 91,359 3,536
Inhibition of acetolactate synthase ALS Imazamox Imidazolinone B 1,412 93
  Amidosulfuron Sulfonylurea B 868 15

Cont…

Table 21: Mode of action/chemical group of herbicide/desiccant active substances on all arable crops – 2018 continued

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

Mode of Action Active substance Chemical Group HRAC Group Total Arable 2018 Total Arable 2018
ha kg
  Flupyrsulfuron-methyl Sulfonylurea B 22,123 145
  Imazosulfuron Sulfonylurea B 303 3
  Iodosulfuron-methyl-sodium Sulfonylurea B 11,135 24
  Mesosulfuron-methyl Sulfonylurea B 11,686 94
  Metsulfuron-methyl Sulfonylurea B 177,661 610
  Rimsulfuron Sulfonylurea B 3,866 44
  Sulfosulfuron Sulfonylurea B 559 11
  Thifensulfuron-methyl Sulfonylurea B 168,760 3,767
  Tribenuron-methyl Sulfonylurea B 121,133 973
  Propoxycarbazone-sodium Sulfonylaminocarbonyl-triazolinone B 394 9
  Florasulam Triazolopyrimidine B 86,765 236

Cont…

Table 21: Mode of action/chemical group of herbicide/desiccant active substances on all arable crops – 2018 continued

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

Mode of Action Active substance Chemical Group HRAC Group Total Arable 2018 Total Arable 2018
ha kg
  Pyroxsulam Triazolopyrimidine B 5,677 105
All inhibition of acetolactate synthase ALS       612,343 6,130
Inhibition of photosynthesis at photosystem II Metribuzin Triazinone C1 23,122 11,124
Chlorotoluron Urea C2 11,847 5,608
Linuron Urea C2 3,712 2,040
Metobromuron Urea C2 7,559 7,876
Bromoxynil Nitrile C3 1,137 55
All inhibition of photosynthesis at photosystem II       47,378 26,702
Photosystem-I-electron diversion Diquat Bipyridylium D 40,311 13,772
Inhibition of protoporphyrinogen oxidase Bifenox Diphenylether (PPO) E 270 129
  Carfentrazone-ethyl Triazolone E 21,133 1,002
  Flumioxazine N-phenylphthalimide E 81 2
  Pyraflufen-ethyl Phenylpyrazole E 6,687 104
All inhibition of protoporphyrinogen oxidase 28,171 1,238
Bleaching: Inhibition of carotenoid biosynthesis Diflufenican Pyridinecarboxamide F1 154,594 8,792
  Flurtamone Other F1 7,496 675
  Picolinafen Pyridinecarboxamide F1 87,485 2,577

Cont…

Table 21: Mode of action/chemical group of herbicide/desiccant active substances on all arable crops – 2018 continued

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

Mode of Action Active substance Chemical Group HRAC Group Total Arable 2018 Total Arable 2018
ha kg
All bleaching: Inhibition of carotenoid biosynthesis 249,575 12,044
Bleaching: DOXP inhibitors Clomazone Isoxazolidinone F4 16,333 1,039
Inhibition of EPSP synthase Glyphosate Glycine G 166,367 134,879
Microtubule assembly inhibition Pendimethalin Dinitroaniline K1 129,881 97,115
  Propyzamide Benzamide K1 7,206 4,818
All microtubule assembly inhibition 137,087 101,934
Inhibition of VLCFAs Dimethenamid-P Chloroacetamide K3 6,720 1,848
  Metazachlor Chloroacetamide K3 27,350 18,549
  Flufenacet Oxyacetamide K3 87,023 12,685
All inhibition of VLCFAs 121,093 33,083
Inhibition of lipid synthesis Prosulfocarb Thiocarbamate N 5,064 7,853
Action like indole acetic acid 2,4-D Phenoxy-carboxylic acid O 534 452
  2,4-DB Phenoxy-carboxylic acid O 6,219 5,878
  Dichlorprop-P Phenoxy-carboxylic acid O 6,240 2,770
  MCPA Phenoxy-carboxylic acid O 12,953 6,162
  Mecoprop-P Phenoxy-carboxylic acid O 125,883 68,278

Cont…

Table 21: Mode of action/chemical group of herbicide/desiccant active substances on all arable crops – 2018 continued

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

Mode of Action Active substance Chemical Group HRAC Group Total Arable 2018 Total Arable 2018
ha kg
  Dicamba Benzoic acid O 39,665 2,400
  Aminopyralid Pyridine carboxylic acid O 1,951 18
  Clopyralid Pyridine carboxylic acid O 16,134 1,136
  Fluroxypyr Pyridine carboxylic acid O 163,448 17,135
  Picloram Pyridine carboxylic acid O 3,147 67
  Quinmerac Quinoline carboxylic acid O 7,536 1,605
  Halauxifen-methyl Arylpicolinate O 83,729 314
All action like indole acetic acid 467,439 106,214
All herbicides       1,982,520 448,424
Area grown       488,318  

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(11)

Contact

Email: psu@sasa.gov.scot

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