Cutworm adults and caterpillars are nocturnal.
Treatments are most effective if applied late in the day after irrigation.
Test pH of spray water and buffer with a commercial buffering solution to pH 5.5-6.0. See label for complete use information. Buffer water with pH 7.0 or above to 5.5 to 6.0 before mixing spray. Buffer water with pH 8.0 or above to pH 5.5 to 6.0 before mixing trichlorfon sprays.