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
Layer in	0	1	2	3	4
Triclopyr
00-04	0.42^¹	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	0.12^²	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.

↵1 Predicted 0.49 ppm.
↵2 Predicted 0.08 ppm. Actual picloram residues: 0.19 ppm in the 0-2 in. layer, 0.05 ppm in the 2-4 in layer.