Articles
PERFORMANCE OF ‘CLARA FRIJS’ PEAR ON QUINCE ROOTSTOCKS GROWING IN A COOL, MESIC NORDIC CLIMATE
Article number
1058_81
Pages
627 – 631
Language
English
Abstract
Performance of Quince rootstocks A, C and Adams v. Pyrodwarf all grafted to Clara Frijs, were compared in vivo in western Norway.
Two-year-old trees were planted at a spacing of 2.5 x 4.5 m in early fall 2001 and trained to a slender spindle with grass between tree rows and a 1 m wide herbicide strips within the rows.
Tree vigour, yield, fruit size and fruit quality were evaluated annually for ten years.
No severe winter damage was observed except that one Quince C tree died during the third winter.
Different rootstocks had a significant effect on tree size after ten years of growth.
Both Quince C and Adams produced the smallest trees whereas Pyrodwarf resulted in the largest trees as measured by trunk cross-sectional area. Each year, fruit were picked between weeks no. 40-41. Tree precocity was retarded as trees began producing a small crop in the third season and yields peaked in the sixth season.
Quince Adams was the most productive rootstock averaging 17.6 kg. tree-1 followed by Quince A (9.0 kg). Alternate bearing was observed for all rootstocks.
Fruit size was intermediate, averaging 153 g for all rootstocks and was little affected by different rootstocks.
Fruit soluble solid concentrations were generally high (12.2%) and were not significantly affected by rootstocks.
Fruit acidity was similar for all Quince rootstocks (0.10%) and was significantly higher than fruit on Pyrodwarf (0.07%). In a cool, mesic northern climate we recommend Quince Adams as a root¬stock, but future investigations need to identify ways of preventing alternate bearing.
Two-year-old trees were planted at a spacing of 2.5 x 4.5 m in early fall 2001 and trained to a slender spindle with grass between tree rows and a 1 m wide herbicide strips within the rows.
Tree vigour, yield, fruit size and fruit quality were evaluated annually for ten years.
No severe winter damage was observed except that one Quince C tree died during the third winter.
Different rootstocks had a significant effect on tree size after ten years of growth.
Both Quince C and Adams produced the smallest trees whereas Pyrodwarf resulted in the largest trees as measured by trunk cross-sectional area. Each year, fruit were picked between weeks no. 40-41. Tree precocity was retarded as trees began producing a small crop in the third season and yields peaked in the sixth season.
Quince Adams was the most productive rootstock averaging 17.6 kg. tree-1 followed by Quince A (9.0 kg). Alternate bearing was observed for all rootstocks.
Fruit size was intermediate, averaging 153 g for all rootstocks and was little affected by different rootstocks.
Fruit soluble solid concentrations were generally high (12.2%) and were not significantly affected by rootstocks.
Fruit acidity was similar for all Quince rootstocks (0.10%) and was significantly higher than fruit on Pyrodwarf (0.07%). In a cool, mesic northern climate we recommend Quince Adams as a root¬stock, but future investigations need to identify ways of preventing alternate bearing.
Publication
Authors
M. Meland , O. Frøynes, C. Kaiser
Keywords
Pyrus communis L., rootstock, cultivar, high density, tree size, yield, fruit quality, yield efficiency, growth, yield, fruit quality
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