Laboratory Screening of Potential Ovicides Against Beet Armyworm, 1987

Eggs of known ages (24 and 72 h old) were collected onto strips of Parafilm M from colony-reared moths in mating and oviposition cages. Small sections of Parafilm containing eggs were dipped in test dilutions and allowed to air dry. There were 4 replicate sections/treatment level; 10-31 eggs/section. The treated eggs were held in Petri dishes under 12:12 (L:D) photoperiod and 75-85°F laboratory conditions. Percent hatch was determined when untreated eggs reached 100% eclosion or showed no further increase. The data were transformed by arcsin p prior to a 1-way analysis of variance.