Pesticide Usage in Scotland: Rodenticides on Arable Farms 2020
This report presents the results of a survey of rodenticide use on arable farms in Scotland in 2020
Appendix 2 - Survey statistics
Census and sample information
| Size Group (ha) | H & I and C & O | Moray Firth | Aberdeen | Angus | East Fife & Lothian | Central Lowlands | TV, SU & Solway | Scotland |
|---|---|---|---|---|---|---|---|---|
| 0.01 – 19.99 | 7 | 0 | 4 | 1 | 1 | 0 | 2 | 15 |
| 20.00 – 49.99 | 1 | 5 | 10 | 7 | 1 | 4 | 7 | 35 |
| 50.00 – 99.99 | 2 | 9 | 15 | 15 | 12 | 5 | 7 | 65 |
| 100.00 – 149.99 | 1 | 7 | 8 | 17 | 9 | 3 | 9 | 54 |
| 150.00 + | 2 | 13 | 10 | 31 | 16 | 3 | 24 | 99 |
| Total | 13 | 34 | 47 | 71 | 39 | 15 | 49 | 268 |
| Size Group (ha) | H & I and C & O | Moray Firth | Aberdeen | Angus | East Fife & Lothian | Central Lowlands | TV, SU & Solway | Scotland |
|---|---|---|---|---|---|---|---|---|
| 0.01 – 19.99 | 1,343 | 336 | 825 | 281 | 205 | 499 | 455 | 3,944 |
| 20.00 – 49.99 | 117 | 234 | 547 | 292 | 175 | 295 | 294 | 1,954 |
| 50.00 – 99.99 | 54 | 160 | 423 | 286 | 226 | 180 | 180 | 1,509 |
| 100.00 – 149.99 | 13 | 85 | 152 | 148 | 137 | 68 | 107 | 710 |
| 150.00 + | 8 | 78 | 163 | 189 | 163 | 64 | 154 | 819 |
| Total | 1,535 | 893 | 2,110 | 1,196 | 906 | 1,106 | 1,190 | 8,936 |
H&I=Highlands & Islands, C&O=Caithness & Orkney, TV=Tweed Valley, SU=Southern Uplands
Raising factors
| Region | Size group (ha) | Adjustment factor | ||||
|---|---|---|---|---|---|---|
| 0.01 – 19.99 | 20.00 – 49.99 | 50.00 – 99.99 | 100.00 – 149.99 | 150 + | ||
| Highlands & Islands/Caithness & Orkney | 191.86 | 117.00 | 27.00 | 13.00 | 4.00 | 1.0000 |
| Moray Firth | NA | 75.03 | 28.50 | 19.47 | 9.62 | 1.6032 |
| Aberdeen | 206.25 | 54.70 | 28.20 | 19.00 | 16.30 | 1.0000 |
| Angus | 281.00 | 41.71 | 19.07 | 8.71 | 6.10 | 1.0000 |
| East Fife & Lothian | 205.00 | 175.00 | 18.83 | 15.22 | 10.19 | 1.0000 |
| Central Lowlands | NA | 134.38 | 65.59 | 41.30 | 38.87 | 1.8221 |
| Southern Uplands, Tweed Valley & Solway | 227.50 | 42.00 | 25.71 | 11.89 | 6.42 | 1.0000 |
Note: The sampled data within a region and size group were multiplied by the appropriate raising and adjustment factors to create an estimate of national use (please refer to Appendix 4 for description of statistical estimation process). For example, a total recorded rodenticide use of 10 kg on 100-149.99 ha sized farms in Aberdeen would be multiplied by 19.00 (raising factor) and 1.00 (adjustment factor) to give an estimated rodenticide use in that region and size group of 190 kg. NA = not applicable.
Survey response rates
| 2020 | Percentage of total | |
|---|---|---|
| Target sample | 350 | 100 |
| Total achieved | 268 | 77 |
| Total number of farms approached | 474 | |
| Total number of refusals/non-contact | 206 |
Financial burden to survey respondents
In order to minimise the burden on farmers and to comply with the restrictions imposed by COVID-19, the survey team used non-visit methods of data collection such as email, post or telephone call.
To determine the total burden that the 2020 rodenticide use on arable farms survey placed on those providing the information, farmers were asked to estimate the time spent providing data. Ninety seven per cent of the farmers surveyed provided this information. The median time taken was two minutes.
In addition, PCPs were also asked to estimate how long they took to provide information. Eighty per cent of the PCPs supplying data provided this information. The median time taken was 25 minutes.
The following formula was used to estimate the total cost of participating:
Burden (£) = No. surveyed x median time taken (hours) x typical hourly rate*
(* using median "Full Time Gross" hourly pay for Scotland of £15.62(9))
It is estimated that the total financial burden to respondents for the 2020 arable crop rodenticide survey was £240.03.
Contact
Email: psu@sasa.gov.scot
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