Blueberry emerald moth

The blueberry emerald moth (scientific name Jodis putata) is a species of moth belonging to the family Geometridae. While the adult moth is often recognized by its subtle appearance, its larval stage is considered a potential pest that can affect the health of ericaceous shrubs.

This pest primarily feeds on plants belonging to the Ericaceae family, with a strong preference for wild and cultivated blueberries. The larvae, often referred to as loopers, utilize their unique movement style to navigate the branches of the host plant, seeking out the most succulent parts of the vegetation.

The biological cycle of this insect is synchronized with the phenology of the host plant. They typically overwinter as larvae in plant debris or on lower twigs. As soon as temperatures rise in the spring, they emerge to feed on developing buds, which is the most critical period for the plant's future growth and yield potential.

Damage caused by this insect involves the consumption of vegetative buds and young leaves. In severe infestations, the defoliation can be extensive, causing significant stress to the bushes. This reduction in leaf area affects photosynthesis, which in turn leads to smaller berry sizes and lower overall crop quality.

Management strategies focus on monitoring and early intervention. Cultural practices, such as maintaining clean field margins and pruning, help reduce the overwintering population. When chemical control is required, it is essential to target the larvae during their early instars using environmentally safe and selective insecticides.

• Regular monitoring of bud development stages.
• Sanitation of the orchard floor to remove overwintering sites.
• Use of biological control agents like Bacillus thuringiensis.
• Strategic application of soft pesticides to preserve beneficial insects.