Plant extracts as biopesticides against pests

Two locally available and well-known plants, such as common tansy Tanacetum vulgare L. and wormwood Artemisia absinthum L. were tested for insecticidal activity. They were found to produce a variety of effects against the white large cabbage butterfly Pieris brassicae l., the Colorado potato beetle Leptinotarsa decemlineata Say and the greenhouse whitefly Trialeurodes vaporariorum Westw. These plants affected the feeding activity, behavioural pat-terns, the development and induces mortality in the insects

Why do organic farmers quit in Estonia?

The purpose of this study was to clarify the problems of Estonian organic farmers and find out their quit reasons. In March 2005 with the aid of a questionnaire 64 organic farming quitters were inquired. Information was collected through telephone interviews. The main reasons were — financially not worthwhile, the compensation system is too bureaucratic and time consuming, and other reasons