Gypsy Moth Management with LdMNPV Baculovirus in Cork Oak Forest

(1) Research Highlights: Applications of a species-specific baculovirus is promising method to control the gypsy moth and regulate its population dynamics in forest ecosystems. (2) Background Objectives: Cork oak protection against Lepidopteran defoliator Lymantria dispar requires an appropriate ecosystem management program, involving application eco-sustainable microbial products during outbreaks. The multicapsid nucleopolyhedrovirus (LdMNPV), agent natural epizootics populations, represents option that was investigated multi-year field study, viral applications either from ground or by aerial treatment. (3) Materials Methods: Efficacy trials L. populations were conducted 2018 2019 Sardinia, according randomized block design. Each year, two conducted, applying commercial formulation with atomizer assessing effects different doses timing, respectively. An trial distributing LdMNPV at ultra-low volumes (2 L/ha) also assess virus efficacy larger scale. (4) Results: In both years, significant increase larval mortality detected plots treated higher occlusion body (OB) earlier targeting younger larvae, comparison untreated controls. Due observed retrogradation phase target pest 2019, no differences density between areas helicopter detected, but few weeks following application, meaningful vitality decrease samples observed. (5) Conclusions: Based on results this use programs can be worth consideration integrated program strategies modulate dynamics.