ISHS Acta Horticulturae 422: International Conference on Integrated Fruit Production
STEPHANITIS PYRI (F) AS A SECONDARY PEST IN AN IPM APPLE ORCHARD |
| Authors: | V. RÁCZ, K. BALÁZS |
| Abstract:
In Hungary Stephanitis pyri was mainly a pest of apple trees standing in abandoned sporadic orchards. While conventional, organophosphorous esteric insecticides were used, no damage caused by Stephanitis pyri was noted. After selective, environment safe technology was introduced, under weather conditions suitable for build-up of population of Stephanitis pyri, in 1994 inside the IPM plot an outbreak was observed, with considerable damage done to the leaves. In the experiments accomplished in a sour cherry plantation the “green” insecticides Insegar, Match and Cascade 5 EC showed no effect against Stephanitis pyri, while the “yellow” Trebon 10 F (etophenprox 0,1 %) suppressed it successfully. In apple plantation, in the spring of 1995 owervintered population of Stephanitis pyri caused severe leaf damage. However, increase of its density could be stopped by using Trebon 10 F. | |
Download Adobe Acrobat Reader (free software to read PDF files) | |
