Field experiment. Soil residues after the application of 0.1 and 1.0 Ib/A picloram as Tordon 101 to nontarget vegetation equivalent to 10% and 100% assumed runoff from target vegetation. Data in ppm are the means of two layers. Each composite sample consisted of at least 15 cores representing a 0.01 A area.
Layer in | 7-28-83 | 8-5-83 | 8-11-83 | 8-19-83 | 8-26-83 | 9-30-83 | 10-26-83 | 12-16-83 |
---|---|---|---|---|---|---|---|---|
10% Assumed runoff | ||||||||
00-10 | 0.03 | 0.06 | N.D. | 0.03 | 0.03 | N.D. | 0.18 | 0.01 |
10-20 | 0.01 | N.D. | N.D. | 0.04 | N.D. | N.D. | N.D. | |
100% Assumed runoff | ||||||||
00-10 | 0.03 | 0.26 | 0.11 | 0.07 | 0.07 | 0.03 | 0.08 | N.D. |
10-20 | 0.03 | N.D. | 0.02 | 0.02 | N.D. | 0.01 | N.D. |