Record Details

Grow Tubes Reduce Root and Crown Growth but Not Early Production during Establishment of Highbush Blueberry

ScholarsArchive at Oregon State University

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Title Grow Tubes Reduce Root and Crown Growth but Not Early Production during Establishment of Highbush Blueberry
Names Strik, Bernadine C. (creator)
Buller, Gil (creator)
Tarara, Julie M. (creator)
Date Issued 2014-05 (iso8601)
Note To the best of our knowledge, one or more authors of this paper were federal employees when contributing to this work. This is the publisher’s final pdf. The published article is copyrighted by the American Society for Horticultural Science and can be found at: http://hortsci.ashspublications.org/.
Abstract Grow tubes are sometimes used in blueberry (Vaccinium corymbosum L.) to
establish plantings or replace dead plants in older fields. Two experiments were
conducted at a commercial farm to evaluate the effect of various grow tubes used during
planting establishment of highbush blueberry cultivars. The treatments in the first
experiment were cultivar (‘Aurora’, ‘Elliott’, ‘Liberty’) and grow tube treatment (no
tube, control; opaque cardboard tube in the first growing season; and opaque plastic tube
in the first season or first through the second season). The treatments in the second
experiment were cultivar (‘Aurora’, ‘Elliott’, ‘Liberty’, ‘Ozarkblue’) and grow tube
treatment (control; translucent plastic; opaque plastic; and wire mesh tube over plants in
the first growing season). The presence of a grow tube from spring to fall of the first
growing season decreased crown dry weight (DW) by an average of 37% to 50% and root
DW by 30% (all except translucent plastic in Expt. 2) and increased the aboveground:belowground DW ratio
relative to the control by an average of 34% to 67%, depending on the
experiment. Plants grown in tubes were taller, had a narrower canopy, and had fewer
whips, likely a response to low light levels inside the tubes; the fewest whips were found in
the opaque plastic or cardboard tubes and the most in the translucent plastic tube with an
intermediate response in the wire mesh tube. Removal of grow tubes during the summer
led to plant damage from sudden sun exposure. The opaque grow tubes (present in Year 1)
reduced yield/plant in Year 2 for ‘Elliott’ and ‘Liberty’ (cardboard tube only) but not
‘Aurora’. Pruning plants to allow for limited early fruit production (≈0.6 kg/plant) in Year
2 did not reduce yield in Year 3 (≈2.7 kg/plant). Whereas grow tubes reduced root and
crown growth in the first season, there appeared to be no longer-term adverse effect on
aboveground plant growth or yield.
Genre Article
Topic Dry weight partitioning
Identifier Strik, B. C., Buller, G., & Tarara, J. M. (2014). Grow tubes reduce root and crown growth but not early production during establishment of highbush blueberry. HortScience, 49(5), 581-588.

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