ISHS Acta Horticulturae 285: Symposium on Integrated Fruit Production
THE INFLUENCE OF TREE SHAPE AND SPACING ON LIGHT INTERCEPTION AND YIELD IN SOUR CHERRY (PRUNUS CERASUS CV. MONTMORENCY) |
| Authors: | J.A. Flore, D. R. Layne |
| Abstract:
Studies on light interception and shading can provide a scientific basis for management of orchard systems in the choice of tree size, spacing, orchard design, and tree shape, for optimum production and efficiency. A component of any integrated fruit production system is an increase in production efficiency, therefore our major objectives were: 1) to describe and identify light characteristics in tree canopies; 2) to conduct shading studies to determine how much light is required for proper growth and development, flower bud formation and fruit development; and 3) to design orchard systems and tree shapes that optimize production based upon light interception. Herein we report on preliminary field experiments concerning objective 3. The following factors were investigated, a) tree shape, b) tree height to clear alleyway width ratios, and c) tree density. Tree shape was established beginning in the 3rd leaf by summer hedging on an annual basis at the end of stage II of fruit growth. Beginning in the 4th leaf, light interception was estimated by measuring the light interception below the canopy at hourly intervals after full canopy development. Yield was directly related to light interception. The results are discussed in relation to tree shape and orchard design under Michigan conditions. | |
Download Adobe Acrobat Reader (free software to read PDF files) | |
