What's eating my ussurian pear?

Ussurian pear is unusually cold-hardy and somewhat pest-resistant, but it still hosts the core pear pest complex. Codling moth and pear psylla are the chief concerns. Its hard, gritty flesh is less attractive to birds and wasps than European pears. Fire blight remains a disease threat even on this tough rootstock.

Larvae tunnel into the hard flesh to reach the core; frass at the entry hole; infested fruit drops early or rots internally Pheromone traps from petal fall; codling moth granulosis virus or spinosad; sanitation — clear fallen fruit to break the pupation cycle

Honeydew secretions coat leaves and small fruit; sooty mould reduces photosynthesis; heavy infestations cause dieback Dormant horticultural oil spray; encourage Anthocoris predatory bugs; kaolin clay barrier during season

Olive-green, slug-like larvae skeletonise the upper leaf surface; repeated defoliation reduces next season's fruit bud formation Jet of water dislodges larvae; kaolin or wood-ash dust; insecticidal soap on young larvae; spinosad for severe cases