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 14 Mode of action/chemical group of insecticide/nematicide active substances - 2021

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

Mode of action Active substance Chemical group IRAC group Total vegetables Total vegetables
ha kg
Acetylcholinesterase (AChE) inhibitor Pirimicarb Carbamate 1A 3,115 436
All acetylcholinesterase (AChE) inhibitors       3,115 436
Sodium channel modulators Cypermethrin Pyrethroid 3A 198 5
  Deltamethrin Pyrethroid 3A 5,570 24
  Lambda-cyhalothrin Pyrethroid 3A 12,124 118
All sodium channel modulators       17,892 147
Nicotinic acetylcholine receptor (nAChR) competitive modulators Acetamiprid Neonicotinoid 4A 822 41
All nAChR competitive modulators       822 41
Ryanodine receptor modulators Cyantraniliprole Diamide 28 1,256 93
All ryanodine receptor modulators       1,256 93
Nicotinic acetylcholine receptor (nAChR) allosteric modulators Spinosad Spinosyns 5 1,428 137
Voltage-dependent sodium channel blocker Indoxacarb Oxadiazine 22A 1,874 48
Inhibitors of acetyl CoA carboxylase Spirotetramat Tetramic acid 23 3,071 218
Chordontonal organ modulators - undefined target site Flonicamid Flonicamid 29 1,684 118
ha kg
Mitochondrial complex II electron transport inhibitors. Succinate-coenzyme Q reductase Fluopyram(1) Pyridinyl-ethyl benzamides FRAC 7(1) 468 117
All other modes of action       8,526 638
All insecticides       31,611 1,355
Area grown       22,066  

(1) Fluopyram is classed as a broad-spectrum fungicide but also has nematicide activity, hence the reason it has a FRAC group code rather than an IRAC code. Fluopyram was only used as a nematicide on veg crops in 2021

Note: Active substances have been grouped by their mode of action. Full details on insecticide and nematicide mode of action classification can be found on the Insecticide Resistance Action Committee (IRAC) webpage(8)



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