Inger Martinussen
Head of Department/Head of Research
Abstract
The successful introduction of new cultivars requires proper pomological, phenological, and technological evaluation. It is particularly important in the harsh Norwegian climate conditions. Investigations were conducted with apple cultivar ‘Eden’/‘Wursixo’ (WUR 6), to establish an optimal balance between yield, fruit quality, and bearing regularity. Four different crop load levels were tested in 3 consecutive years in the orchard, planted 3.5×1 m and trained as a slender spindle. Lower crop load levels guaranteed good return bloom, a very high share of fruits harvested during the first picking, and larger fruits. Increasing crop load led to less intensive return bloom, smaller fruit sizes, and a higher share of fruits harvested during the second picking. It was found that ‘Eden’ is strictly alternating cultivar and precise crop load levels according to the tree age and tree vigour were defined. In order to keep ‘Eden’ trees in regular bearing mode, crop load levels should be maintained at 4.5-5 fruits cm‑2 of trunk cross-sectional area (TCSA) in the 3rd and 6-7 fruits in the 4th growing season.
Authors
Inger MartinussenAbstract
Økt forbruk av norskprodusert frukt og grønt, fulgt av økt norsk produksjon, vil være viktig for økt selvforsyningav plantebasert mat. Nye sorter, differensierte produkter og bruk av ny teknologi er sentralt for å oppnå dette.
Authors
Inger MartinussenAbstract
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