When must systemic treatments be absorbed for effectiveness against larvae?
Answer
Before the larvae begin actively feeding on new leaf tissue
Systemic control methods designed to manage the Winter Moth operate by having the plant absorb the chemical agent, which is then translocated to the developing leaf tissue. For this process to be successful, the treatment must be applied and fully absorbed into the plant before the critical larval feeding window commences in the spring. If the application is timed correctly, the larvae ingest the toxicant when they first consume the new growth. If the larvae have already begun feeding extensively, the systemic treatment will not have reached effective concentrations in the foliage, rendering the application ineffective for that season's population.
Related Questions
Which stage of the Winter Moth inflicts the major feeding damage?What is the characteristic appearance of a Winter Moth infested canopy?During which period do male and female Winter Moths fly to mate?When must systemic treatments be absorbed for effectiveness against larvae?Why does the extensive host range of *Operophtera brumata* complicate management?What is the mobility characteristic of the adult female Winter Moth?What primary consequence forces a host plant after severe, early spring defoliation?Where do Winter Moths spend the summer months after larval development?What larval size is generally targeted for traditional contact control tactics?What management approach targets the precursor to the larval diet using physical barriers?