ISHS Acta Horticulturae 422: International Conference on Integrated Fruit Production
THE INFLUENCE OF DIFFERENT UNDER-GROWTH AND IPM SPRAY SCHEDULES ON APPLE DAMAGE, FRUIT QUALITY AND YIELD. |
| Authors: | E. Niemczyk, R.W. Olszak, R.Z. Zajac |
| Abstract:
In a young apple orchards divided into seven plots, on 6 plots the several insecticides recomended in IPM control method was tested. The plot 7 (check) was sprayed with non selective insecticides. The apple damage caused by insect pests decreased with the years, from 21.5% in 1992, 12.3% in 1993 and 1.7% in 1994. During first 2 years the highest apple damage caused leaf rollers, bugs and large caterpillars. Codling moth and apply sawfly affected few fruits only. The quality of apples harvested on "IPM plots" was pretty high, but compering to "check fruits" slightly lower or lower. The yield from "IPM plots" - compering to the crop harvested from the check trees - was the same, little lower or lower depending on the plot. | |
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