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Effect of timing of hand thinning on the cropping potential of Red Fuji apple trees


Jones, KM and Bound, SA and Koen, TB and Oakford, MJ, Effect of timing of hand thinning on the cropping potential of Red Fuji apple trees, Australian Journal of Experimental Agriculture, 32 pp. 417-20. ISSN 0816-1089 (1992) [Refereed Article]

DOI: doi:10.1071/EA9920417


In 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.

Item Details

Item Type:Refereed Article
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Horticultural production
Research Field:Horticultural crop growth and development
Objective Division:Plant Production and Plant Primary Products
Objective Group:Horticultural crops
Objective Field:Pome fruit, pip fruit
UTAS Author:Jones, KM (Mr Keith Jones)
UTAS Author:Bound, SA (Dr Sally Bound)
ID Code:26542
Year Published:1992
Web of Science® Times Cited:14
Deposited By:Agricultural Science
Deposited On:2003-08-01
Last Modified:2007-06-26

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