Table 2.
Droplet size distribution for TP95015EVS and AI95015EVS nozzles spraying herbicide solutions evaluated in the spray drift study.
| Herbicide solution | TP95015EVSa | AI95015EVSa | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DV0.1 | DV0.5 | DV0.9 | SCb | DV0.1 | DV0.5 | DV0.9 | SCb | |||||||
| μm | μm | |||||||||||||
| 2,4-D | 129 | bA | 251 | bA | 394 | bA | F | 391 | aC | 740 | aD | 1089 | aE | EC |
| Dicamba | 114 | bC | 236 | bC | 396 | bA | F | 433 | aB | 836 | aA | 1262 | aA | UC |
| Glufosinate | 79 | bF | 182 | bF | 342 | bC | F | 335 | aF | 720 | aE | 1118 | aD | EC |
| Glyphosate | 88 | bE | 201 | bE | 354 | bBC | F | 385 | aD | 796 | aC | 1169 | aC | EC |
| Imazethapyr | 103 | bD | 220 | bD | 370 | bAB | F | 441 | aA | 845 | aA | 1254 | aA | UC |
| Lactofen | 132 | bA | 250 | bAB | 385 | bA | F | 375 | aE | 708 | aF | 1048 | aF | EC |
| Mesotrione | 120 | bB | 240 | bBC | 392 | bA | F | 437 | aA | 820 | aB | 1201 | aB | UC |
aDV0.1, DV0.5, and DV0.9 represent the droplet size such that 10, 50, and 90% of the spray volume is contained in droplets equal or lesser diameters, respectively. Lowercase letters compare nozzles within herbicide and uppercase letters compare herbicides within nozzle. Means by the same letter are not different (P ≤ 0.05).
bThe spray classifications (SC) for this study were based on reference curves created from reference nozzle data at the Pesticide Application Technology Laboratory as described by ASABE S572.3 where F = Fine, EC = Extremely Coarse, and UC = Ultra Coarse.