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Effect of timing of hand thinning on the cropping potential of Red Fuji apple trees
journal contribution
posted on 2023-05-16, 14:07 authored by Jones, KM, Sally BoundSally Bound, Koen, TB, Oakford, MJIn a hand-thinning trial of 6-year-old Red Fuji apple trees on seedling rootstocks at the Grove Research Station in southern Tasmania, unthinned controls were compared with trees that were hand-thinned between full bloom and 56 days after full bloom. Trees were thinned to about 200 flowers or fruit per tree. The response of fruit size and weight to later thinning was negative and linear (R2=0.72). This regression was not significantly affected if adjusted for the varying fruit crop per tree. It is concluded that in Australia, Red Fuji is capable of producing larger fruit at higher crop loads than either Red Delicious or Golden Delicious and that thinning at blossom produces much larger fruit than later thinning. Because of the strong correlation between Red Fuji fruit size or weight and time of thinning, we conclude that it is preferable to thin at blossom time. © 1992 CSIRO.
History
Publication title
Australian Journal of Experimental AgricultureVolume
32Pagination
417-20ISSN
0816-1089Department/School
Tasmanian Institute of Agriculture (TIA)Publisher
CSIRO PublishingPlace of publication
Collingwood, Melbourne, AustraliaRepository Status
- Restricted