Newly Discovered Components of Sex Pheromone.

The pine-tree lappet moth, is a harmful defoliator of pine forests in Europe and Asia and a potentially invasive species in North America. The lures for trapping males based on two known components of its sex pheromone appeared weakly attractive to male moths. Identification of all components of the sex pheromone might allow for the development of more effective lures.

An attempt to control Cameraria ohridella using an attract-and-kill technique.

This study estimates the efficacy of an attract-and-kill (A&K) technique to control the horse chestnut leaf miner, Cameraria ohridella Deschka and Dimic (Lepidoptera, Gracillariidae), an invasive insect pest of the horse chestnut, Aesculus hippocastanum L. (Hippocastanaceae). The A&K formulation was dispensed as 50 μl droplets of paste-like matrix, containing C.

Effect of attract and kill formulations and application rates on trap catches of European pine shoot moth (Lepidoptera: Tortricidae) and shoot damage in Scots pine saplings.

Attract and kill technology was tested for management of European pine shoot moth, Rhyacionia buoliana (Denis & Schiffermüller), in 4-6-yr-old Scots pine, Pinus sylvestris L., plantations managed by Jablonna and Pultusk Forest Districts, Poland. In 2001, two formulations based on ricinoleic acid and hydrocarbon fraction (petroleum jelly) in combination with (E)-9-dodecenyl acetate, the sex pheromone of the pine shoot moth; permethrin as a contact insecticide; and Tinuvin UV absorber were used.

Microflora of soils under pine forests area affected by gradation of leaf-eating insects.

Soils of pine forests in the Bytnica Forestry District, Poland, are poor in nutrients readily accessible to plants. The excessively acidic reaction of the soils, typical for soils under pine forests, unfavourably affects the growth of microorganisms whose numbers are lower than in soils under deciduous and mixed forests. In the pine forests of the studied forestry there were outbreaks of a defoliating insect - pine beauty moth (Panolis flammea L.