Article Figures & Data
Tables
- Table 2.
Field experiment. Predicted and actual soil residues 1 h after application, and calculated interception by non-target vegetation. Data based on top 5 in. soil layer. Rates of application: Triclopyr 0.6 and 6.0 Ib/A, picloram 0.1 and 1.0 Ib/A
Herbicide 10% Estimated runoff 100% Estimated runoff Predicted Found Retained Predicted Found Retained ppm ppm % ppm ppm % Triclopyr 0.39 0.19 51.3 3.89 0.52 86.6 Picloram 0.07 0.05 28.6 0.70 0.05 92.9 - Table 3.
Leaching experiments. Initial amounts: 0.6 Ib/A triclopyr and 0.1 Ib/A picloram equivalent to 10% assumed runoff. Results in ppm, means of two replicates.
Layer in Weeks 0 1 2 3 4 Triclopyr 00-04 0.421 0.27 0.07 0.04 0.03 04-09 N.D. N.D. N.D. N.D. N.D. 09-14 N.D. N.D. N.D. N.D. N.D. 14-19 N.D. N.D. N.D. N.D. N.D. Picloram 00-04 0.122 0.07 0.02 0.02 0.02 04-09 N.D. N.D. 0.02 N.D. N.D. 09-14 N.D. N.D. N.D. N.D. N.D. 14-19 N.D. N.D. N.D. N.D. N.D. - Table 5.
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. - Table 4.
Field experiment. Soil residues after the application of 0.6 and 6.0 Ib/A triclopyr to non-target 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 soil cores representing a 0.01 A area.
Layer in 10-5-82 10-12-82 10-19-82 10-27-82 11-2-82 11-30-82 12-28-82 10% Assumed runoff 00-10 0.08 0.04 N.D. <0.01 N.D. * N.D. 10-20 N.D. N.D. N.D. N.D. * N.D. 100% Assumed runoff 00-10 0.23 Lost 0.27 0.31 0.45 0.04 0.03 10-20 Lost <0.01 N.D. N.D. N.D. N.D. ↵* Not analyzed because of the previous results.
- Table 1.
Soil characteristics. Column A: Field experiments. Column B: Field operation. Except for pH, data are in percent
0-5 in. 5-10 in. 10-15 in. Soil A B A B A B Coarse sand 53.8 46.3 52.4 43.6 54.2 35.6 Fine sand 39.5 37.8 42.9 38.7 41.3 44.0 Silt and clay 6.7 15.9 4.7 17.8 4.5 20.8 Organic matter 2.5 3.2 <0.4 2.2 <0.4 1.3 pH 5.0 5.2 5.2 5.4 5.4 5.3 - Table 6.
Field operation. Soil residues of picloram after application of 1% Tordon 101 with a hydraulic spray truck. Data in ppm are the means of two layers. Each composite sample consisted of 5 cores representing an area of 9 sq. ft. Targets A and B were 20 feet apart.
Layer in 7/26/83 8/2/83 8/10/83 8/17/83 8/24/83 9/29/83 A B A B A B A B A B A B 00-10 0.04 0.04 0.11 0.15 0.11 0.13 0.03 0.09 0.03 0.16 0.08 0.08 10-20 N.D. N.D. 0.02 N.D. 0.01 0.01 0.03 0.05 20-30 0.01 0.05
In this issue
Jump to section
Related Articles
Cited By...
- No citing articles found.