Monitoring of Phenology and Population Trends of Lepidopteran Cone Pests in South Swedish Spruce Seed Orchards
Regeneration of Norway spruce, Picea abies, forests is to a large extent depending on the production of seeds from high quality plus trees in orchards. However, the seed yield is variable and unpredictable due to weather, pest insects and diseases. Thus, more knowledge is needed to improve planning of harvest and mitigation of pests and diseases to secure future forest regeneration. In this study,