Table 1.
Herbicide residues in woody plant vegetation.
Chemical name
No. tests
Avg. amt. in tissues (ppm)
Lowest residue producing symptoms
2,4-D
13
0.52
0.018
dicamba
9
0.092
0.03
prometon
10
5.25
2.10
atrazine
5
2.64
0.14
bromacil
11
1.70
0.14
tebuthiuron
13
11.15
1.00
picloram
3
0.094
0.02