Yield determination in olive hedgerow orchards. II. Analysis of radiation and fruiting profiles
- 1 January 2009
- journal article
- research article
- Published by CSIRO Publishing in Crop and Pasture Science
- Vol. 60 (5), 443-452
- https://doi.org/10.1071/cp08253
Abstract
Profiles of fruit density, fruit size, and oil content were measured on 12 occasions in 7 olive orchards in Spain and 2 in Australia. Orchard structure varied widely. Height ranged from 2.0 to 5.5 m, row spacing from 3 to 6 m, and canopy width from 0.7 to 3 m. Most orchards were oriented north–south (N–S) but one in Spain was oriented close to east–west (E–W) (20° NE–SW). All orchards in Spain were cv. Arbequina, and in Australia they were cvv. Barnea and Picual. Analyses with a model of interception and transmission that estimated interception by individual sides of hedgerows revealed that fruit size and oil content were strongly related to intercepted radiation during the month before harvest across all orchards. Relationships were also evident between fruit density and interception but varied among orchards and years, indicating the importance of other environmental and probably physiological effects. In N–S orchards of cv. Arbequina, average fruit size and oil content increased linearly from 0.40 g (dry weight) to 0.72 g, and from 36 to 49% (of dry weight), as daily intercepted PAR increased from 6 to 25 mol/m2 (15–60% of horizontally incident radiation). The general principles of response extended to E–W orchards. There, it was shown that generally large fruit with high oil content on S sides was consistent with the plateau responses to radiation evident in the more extensive N–S data. On the N side, however, and accounting for transmission through the hedgerow, both fruit size and oil content were greater than in positions intercepting equivalent radiation in N–S orchards. Examples are provided of the utility of responses of fruit density, size, and oil content in establishing combinations of row height, row width, and row distance to improve or maintain productivity in some of the orchards included in the study.Keywords
This publication has 15 references indexed in Scilit:
- Yield determination in olive hedgerow orchards. I. Yield and profiles of yield components in north - south and east - west oriented hedgerowsCrop and Pasture Science, 2009
- Towards optimal designs for hedgerow olive orchardsAustralian Journal of Agricultural Research, 2006
- Two-dimensional solar radiation interception model for hedgerow fruit treesAgricultural and Forest Meteorology, 2003
- A simulation model for hedgerow light interception and growthAgricultural and Forest Meteorology, 2001
- Modelling and measurement of radiation interception by olive canopiesAgricultural and Forest Meteorology, 2000
- A flexible and explanatory model of light distribution and photosynthesis in row cropsAgricultural and Forest Meteorology, 1989
- The distribution of leaf area, radiation, photosynthesis and transpiration in a Shamouti orange hedgerow orchard. Part II. Photosynthesis, transpiration, and the effect of row shape and directionAgricultural and Forest Meteorology, 1987
- The distribution of leaf area, radiation, photosynthesis and transpiration in a Shamouti orange hedgerow orchard. Part I. Leaf area and radiationAgricultural and Forest Meteorology, 1987
- Interception of Light by Model Hedgerow Orchards in Relation to Latitude, Time of Year and Hedgerow Configuration and OrientationJournal of Applied Ecology, 1972
- Aspects of Light Climate Within Apple OrchardsJournal of Applied Ecology, 1970