Spray damage
More concentrated solutions provided
more effective control but increased the potential
for plant damage. Table 3 gives the
effects of five fairly concentrated solutions,
sprayed on eight plant species representing
a wide range of leaf structures and
surfaces, and inspected two weeks later.
Leaf burning, along the margins or in
patches, was the most common phytotoxicity
symptom. Some solutions left unsightly
white residues on certain plants.
This trial indicates that solutions vary in
their phytotoxicity. No pattern emerged;
detergents did not consistently respond differently
from soaps, and solutions derived