ISHS Acta Horticulturae 444: III International Symposium on Kiwifruit
LOCATION OF FRUIT WITH SUPERIOR CHARACTERISTICS IN THE CANOPY OF KIWIFRUIT VINES |
| Authors: | G.S. Smith, S.A. Miller, J.P. Curtis |
| Abstract:
Fruit with superior characteristics were located in the canopy of kiwifruit vines. Each fruit was located within the canopy of eight-year old vines grown on a T-bar or Pergola support structure using a surveyor's theodolite. Fruit were individually labeled at the time of mapping for subsequent identification during postharvest analysis. All fruit were harvested on the same day and stored at 0°C for 12 weeks. Fruit with superior characteristics (required commercial size and shape, above average soluble solids concentration, flesh firmness, and below average water content), accounted for only a small proportion of the total fruit on the Pergola vines (20%) and the T-bar vines (12%). The majority of fruit (50–52%) from vines on both trellis types was of mixed quality (required size and shape, but below average in either °Brix or flesh firmness). A greater proportion of the superior fruit was located in the denser parts of the canopy close to the cordon with up to 27% of the fruit on the Pergola and 24% on the T-bar vines. Fruit with less desirable attributes were from the extremities of the canopy where the leaf area index was low. Fruit from the inner zones of the canopy, especially those close to the ground on the T-bar vines, also had less desirable characteristics than fruit from zones in the outer canopy. | |
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