Do not apply within 42 days of harvest. Do not allow livestock to graze in treated areas. Do not apply more than 9 pints per acre per season. Do not apply within 45 days of harvest. When beetles are numerous, as in 1994 and 1995, fields may be severely defoliated.
Adults quickly begin laying pale yellow eggs singly on stems and the underside of leaves.
Eggs hatch in about 8 days. The pale green, humpbacked larvae begin feeding, eating holes throughout the leaf. Larvae do not feed during the day, resting in the plant tops where they are easily observed. Treatment is recommended when scouting determines that an average of 1 to 2 beetles per plant can be found throughout the field. The reduced rate application has a range of 1.45 - 5.8 fl oz.