Oxygen requirement of dolichos bean bruchids at different stages of its life cycle

Abstract

The present investigation was carried out from September, 2017 to March, 2018 in the research laboratory of College of Horticulture, Rajendranagar, Hyderabad, SKLTSHU. Oxygen requirement of Callosobruchus theobromae at different stages of its life cycle and performance of triple layer bags as a source of hermetic storage technology for management of pulse bruchid in Dolichos bean seed was investigated. The respiratory quotient (RQ) calculated revealed that a single bruchid for completing life cycle from egg to pupal stage used 39.97 ml of oxygen and 26.21 ml of carbon dioxide simultaneously. The conditions in triple layer PICS bag were less than RQ at all stages with less than critical oxygen levels required for bruchid survival.