Abstract
Container-grown apple trees on a range of rootstocks were exposed to different levels of soil compaction created by changing soil bulk density. In 1998, with soil bulk densities of 1.0, 1.2, and 1.4, there was no interaction of rootstock and soil compaction for shoot growth of `Melrose' trees on 7 rootstocks. However, in 1999, with soil bulk densities of 1.0 and 1.5, a significant interaction on shoot growth did occur with six rootstocks. Shoot length of trees on M.9, M.7, and G.30 were less influenced than G.16, M.26 and MM.106. A bulk density of 1. 5 caused a decrease in dry weight of shoots, leaves, and roots of trees on all rootstocks. Compacted soil resulted in a decrease in leaf concentration of K and B and an increase in Mg and Mn.
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Claims 6
Claim · model-written summary
The 1998 trial found no shoot-growth interaction.
Verbatim
e0“there was no interaction of rootstock and soil compaction for shoot growth of `Melrose' trees on 7 rootstocks”
Claim · model-written summary
The 1999 trial found a significant interaction.
Verbatim
e0“a significant interaction on shoot growth did occur with six rootstocks”
Claim · model-written summary
Three rootstocks were less influenced than three others.
Verbatim
e0“Shoot length of trees on M.9, M.7, and G.30 were less influenced than G.16, M.26 and MM.106.”
Claim · model-written summary
High bulk density decreased shoot, leaf, and root dry weight.
- Taxon
- treese0
- Treatment
- bulk density of 1. 5e0
- Outcome
- dry weight of shoots, leaves, and rootse0
- Direction
- decreasee0
Not reportedComparator
Verbatim
e0“A bulk density of 1. 5 caused a decrease in dry weight of shoots, leaves, and roots of trees on all rootstocks.”
Claim · model-written summary
Compaction decreased leaf K and B.
Not reportedTaxonComparator
Verbatim
e0“Compacted soil resulted in a decrease in leaf concentration of K and B”
Claim · model-written summary
Compaction increased leaf Mg and Mn.
Not reportedTaxon
Verbatim
e0“an increase in Mg and Mn”