Pesticide Usage in Scotland: Arable crops and Potato stores 2022

This publication presents information from a survey of pesticide use on Arable crops and Potato stores in Scotland during 2022.


Appendix 1 – Estimated application tables

Table 1 Potatoes stored, and proportion treated, by storage type – 2022
  Store type Total
Unventilated Ventilated Refrigerated
Seed
Tonnes stored 0 73,952 258,793 332,745
Percentage type [z] 22 78  
Basic tonnes treated 0 39,094 44,182 83,276
Percentage treated [z] 53 17 25
Ware  
Tonnes stored 1,087 108,071 509,291 618,449
Percentage type 0.2 17 82  
Basic tonnes treated 0 14,683 35,619 50,302
Percentage treated [z] 14 7 8
All stored potatoes  
Tonnes stored 1,087 182,023 768,084 951,194
Percentage type 0.1 19 81  
Basic tonnes treated 0 53,777 79,801 133,578
Percentage treated [z] 30 10 14

Note: some shorthand is used in this table: [z] = not applicable.

Table 2 Potato storage treatment formulations by storage type – 2022
  Store type Total tonnes treated Percentage treated
Unventilated Ventilated Refrigerated
Seed    
Imazalil 0 39,094 44,182 83,276 25
Basic tonnes treated(2) 0 39,094 44,182 83,276 25
Ware  
1,4-dimethylnaphthalene 0 10,024 0 10,024 1
Ethylene 0 0 24,941 24,941 4
Imazalil(1) 0 201 0 201 0.03
Spearmint oil 0 12,603 10,677 23,280 3
Basic tonnes treated(2) 0 14,683 35,619 50,302 8

(1) This formulation is not approved on ware potatoes. It was applied to seed crops, a proportion of which was later reclassified as ware.

(2) This represents the total tonnage treated, not the column sum, as more than one formulation may be applied to potatoes in store.

Table 3 Potato storage treatment active substances – 2022
Tonnes treated kg
Seed    
Imazalil 83,276 1,196
Ware
1,4-Dimethylnaphthalene 10,024 200
Ethylene 24,941 [z](1)
Imazalil(2) 201 2
Spearmint oil 23,281 1,655

Note: some shorthand is used in this table: [z] = not applicable.

(1) The mass of ethylene used cannot be estimated (refer to Appendix 3 – definitions and notes).

(2) This active substance is not approved as a plant protection product for stored ware potatoes. Refer to Pesticide usage – Ware potatoes section.

Table 4 Potato cultivation and storage, comparison with previous surveys – 2022
  Crop 2018 2020 2022
Area grown (ha)(1) Seed 12,092 12,003 11,894
Ware 15,268 16,294 15,248
Tonnes stored(2) Seed 312,793 391,208 332,745
Ware 562,894 596,407 618,449

(1) This is the census area of the crops intended to be grown for seed and ware production. Some of the seed crop was reclassified as ware post-harvest. As there was no June Agricultural Census in 2022 the SAF area has been used.

(2) Please note, there has been a significant change in survey methodology which must be taken into account when comparing data from 2022 and previous surveys, see Appendix 4 for further information.

Table 5 Percentage of stored potatoes treated, comparison with previous surveys – 2022
  Crop 2018 2020 2022
Total tonnage treated (%) Seed 28 39 25
Ware 13 6 8

Contact

Email: psu@sasa.gov.scot

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