are provided in Table A 3-1.10. If more refined analysis is required, chemical-specific values will be derived and incorporated into a spray drift appendix. Table A 3-1.10.Default spray drift fractions for use in PRZM5/VVWM Application Drop size Distribution / Spray drift fraction (unitless)1 Method Category Bin 2 Bin 3 Bin 4 Bin 5 Bin 6 Bin 7 Very fine to fine 0.472 0.414 0.291 0.486 0.401 0.195 Fine to medium (default) 0.437 0.320 0.167 0.469 0.297 0.093 Aerial Medium to coarse 0.424 0.284 0.123 0.462 0.257 0.063 Coarse to very coarse 0.412 0.261 0.097 0.456 0.233 0.047 Ground high Very fine to fine (default) 0.620 0.294 0.089 0.778 0.252 0.042 boom Fine to medium/coarse 0.215 0.079 0.024 0.336 0.067 0.012 Ground low Very fine to fine 0.365 0.140 0.039 0.528 0.118 0.019 boom Fine to medium/coarse 0.154 0.054 0.016 0.251 0.045 0.008 Sparse (default) 0.372 0.219 0.064 0.418 0.192 0.027 Normal 0.007 0.004 0.002 0.008 0.004 0.001 Airblast Dense 0.094 0.060 0.021 0.104 0.054 0.010 Vineyard 0.025 0.013 0.004 0.030 0.011 0.002 Orchard 0.174 0.104 0.033 0.195 0.092 0.015 1 Estimated Tier 1 in AgDRIFT 2.1.1 and the following water body widths: Bin 2 2 m, Bin 3 8 m, Bin 4 – – – 40 m, Bin 5 1 m, Bin 6 10 m, and Bin 7 100 m. – – –
are provided in Table A 3-1.10. If more refined analysis is required, chemical-specific values will be derived and incorporated into a spray drift appendix. Table A 3-1.10.Default spray drift fractions for use in PRZM5/VVWM Application Method Drop size Distribution / Category Spray drift fraction (unitless)1 Bin 2 Bin 3 Bin 4 Bin 5 Bin 6 Bin 7 Aerial Very fine to fine 0.472 0.414 0.291 0.486 0.401 0.195 Fine to medium (default) 0.437 0.320 0.167 0.469 0.297 0.093 Medium to coarse 0.424 0.284 0.123 0.462 0.257 0.063 Coarse to very coarse 0.412 0.261 0.097 0.456 0.233 0.047 Ground high boom Very fine to fine (default) 0.620 0.294 0.089 0.778 0.252 0.042 Fine to medium/coarse 0.215 0.079 0.024 0.336 0.067 0.012 Ground low boom Very fine to fine 0.365 0.140 0.039 0.528 0.118 0.019 Fine to medium/coarse 0.154 0.054 0.016 0.251 0.045 0.008 Airblast Sparse (default) 0.372 0.219 0.064 0.418 0.192 0.027 Normal 0.007 0.004 0.002 0.008 0.004 0.001 Dense 0.094 0.060 0.021 0.104 0.054 0.010 Vineyard 0.025 0.013 0.004 0.030 0.011 0.002 Orchard 0.174 0.104 0.033 0.195 0.092 0.015 1 Estimated Tier 1 in AgDRIFT 2.1.1 and the following water body widths: Bin 2 – 2 m, Bin 3 – 8 m, Bin 4 – 40 m, Bin 5 – 1 m, Bin 6 – 10 m, and Bin 7 – 100 m.
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