Agronomy Journal Journal of Natural Resources and Life Sciences Education
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Modeling Light Interception and Transpiration of Apple Tree Canopies

Steve Green*, Keith McNaughton, J. N. Wünsche and Brent Clothier

Environ. and Risk Manage. Group, HortResearch Inst., Private Bag 11-030, Palmerston North, New Zealand



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Fig. 1. Total amount of photosynthetic photon flux (QP) radiation absorbed by the ‘Splendour’/MM.106 apple measured by the Whirligig radiometer and calculated using the three-dimensional array model.

 


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Fig. 2. Total amount of all-wave radiation (QN) absorbed by the ‘Splendour’/MM.106 apple tree measured by the Whirligig and calculated using the three-dimensional array model.

 


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Fig. 3. The relationship between model predictions and measured values of the total amount of all-wave radiation (QN) absorbed by the ‘Splendour’/MM.106 apple tree.

 


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Fig. 4. Transpiration rate of the ‘Splendour’/MM.106 apple tree determined by the heat pulse method (data) and calculated using the three-dimensional array model (model).

 


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Fig. 5. The relationship between model predictions and measured values of the transpiration rate (T) of the ‘Splendour’/MM.106 apple tree.

 


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Fig. 6. Total amount of photosynthetic photon flux (QP) radiation absorbed by the ‘Braeburn’/M.9 apple tree measured by the Whirligig radiometer (data) and calculated using the three-dimensional array model.

 


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Fig. 7. Total amount of all-wave radiation (QN) absorbed by the ‘Braeburn’/M.9 apple tree measured by the Whirligig (data) and calculated using the three-dimensional array model.

 


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Fig. 8. Transpiration rate of the ‘Braeburn’/M.9 apple tree determined by the heat pulse method (data) and calculated using the three-dimensional array model (model).

 





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