Winter survival ofPectinophora gossypiella(Saunders) was studied in relation to timing of irrigation treatments, with applications ranging from January 5 to May 10, 1967, including a nonirrigated control and 2 methods of larval burial. Of 4200 larvae buried at the 6-in. soil depth, only 1.3% survived. No significant differences existed among irrigation treatments, but larval survival was significantly greater in buried bolls than in buried, free cocoons. Moth emergence appeared to be related to soil moisture and compaction. Approximately 75% of the moth emergence was suicidal, and significantly more males than females survived.