ISHS Acta Horticulturae 288: VI International Symposium on Pollination
EVALUATION OF SHOOT-BENDING, PRUNING AND POLLINATION FOR INCREASING FRUIT-SET AND YIELD ON YOUNG “COX” TREES |
| Authors: | J.P. van Praagh, H. Hauschildt |
| Abstract:
Two- to four-year-old young apple trees of the cvs. “Cox Orange Pepin” were either shoot-bended or pruned to shorten the inproductive phase of young trees. In order to test the importance of higher grades of pollination on the cropping of those young trees, a high colony density (approx. 10 colonies per ha) was used. Three different grades of pollination intensity were obtained by hand-pollination, normal bee flight and the application of a bee-repellent. Although shoot-bending results in a better flower bud initiation (figure 1), those flowers do not set fruit as good as flowers on pruned trees (figure 2). Only handpollination results in more fruits per tree on shoot bended trees. Therefore only a superb pollinating system will enable the grower to get a revenue from the higher investment necessary for shoot-bending. | |
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