The paper presents the descriptions as well as drawings of three species of eriophyid mites found on coniferous plants as new in Poland: Trisetacus juniperinus (Nalepa) from Juniperus procumbens, Eriophyes junipereti Keifer from Juniperus communis L. 'Hibemica' and Cecidophyopsis psilaspis (Nalepa) from Taxus baccata L. Additionally, eriophyoid mites collected from Thuja occidentalis and Tsuga canadensis are discussed in this paper.

Azadirachtin is the most active substance separated from Azadirachta indica. It acts destructively on numerous species of insects and mites. The aim of the presented investigations was to determine the effect of azadirachtin on one of the most dangerous pests of cabbage plants, Pieris brassicae, and on its natural enemy, Apanteles glomerarus. The results of the field observations did not show any repellent effect of azadirachtin relating to laying their eggs cabbage butterflies. However, a significant effect of the azadiraehtin solution on reduction the number of cabbage butterfly caterpillars (it was more distinctly marked in respect to young larva stages) as well as on limited feeding by caterpillars. No negative influence of azadirachtin on a parasite of Pieris brassicae caterpillars, Apanteles glomeratus was distinctly shown.

Influence of triforine (standard), garlic juice, Antifung 20 SL (20% vermicompost), Atpolan 80 EC (76% mineral oil), Biosept (grapefruit juice) and Atonik AL on development of Sphaerotheca pannosa var. rosae was evaluated. Garlic juice, Atpolan 80 EC and Biosept applied as rose spray gave similar effect in the control S. pannosa var. rosae as triforine. Observations under scanning electron microscop indicated that 24 hrs after rose spraying all tested compounds cause almost complete collapse of conidia and hyphe.

In 1997 and 1998, insects settling cultures of goats rue (Galega orientalis Lam.) at Mochelek were caught. Amongst ground beetles the dominating species were: Pterostichus melanarius lll., Carabus auratus L., Harpalus rufipes De Geer, Harpalus aeneus F., and Bembidion lampros Hbst. and Harp alus frolichi Sturm. were subdominants.