ISHS Acta Horticulturae 422: International Conference on Integrated Fruit Production
COMPARISON OF INTEGRATED AND CONVENTIONAL PRODUCTION OF APPLES |
| Authors: | J. Grauslund, M. Bertelsen |
| Abstract:
The aim of the experiment was to show the practical possibilities in an integrated apple production system. One plot containing 30 trees of each of eight cultivars were treated according to principles for Integrated Fruit Production, while a similar plot were treated conventionally. 'Prima' and 'Priam' proved their scab-resistance (not sprayed against scab). The remaining cultivars were sprayed according to Mill's infection table. In the conventional plot 10-17 fungicide treatments were applied per year, while the integrated plot received 3-16 treatments depending on cultivar and year. However, the integrated plot was not treated against storage diseases in order to evaluate the risk of omitting these sprays. In the conventional plot fruits were mostly free of scab at harvest. In the integrated plot incidence was mainly between 0 and 1 per cent, with a few cases of 2–5 per cent scab. Gloeosporium-rot and storage scab gave rise to considerable losses during storage, particularly in 'Aroma'. Sufficient control of insect pests was difficult with the few selective insecticides available. Capsids and apple sawflies caused a considerable damage, while totrix moths was controlled by diflubenzuron. | |
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