Abstract
Abstract Two studies were conducted to determine the effects of several factors on growth of containerized lanceleaf coreopsis ( Coreopsis lanceolata L.) and little bluestem ( Schizachyrium scoparium (Michx.) Nash.). In the first study, seeds were sown in 22 cm 3 (1.3 in 3 ) plug cells and then transplanted, with or without root disturbance (manually teasing roots from the root ball and directing them radially from the plant axis) into 3.78 liter (1 gal) containers at 35 days (young) or 49 days (old) after planting. By 35 days after transplanting, old transplants of both species had greater shoot dry weight than young ones even though the latter had greater shoot relative growth rate and shoot net assimilation rate between 0 and 35 days after transplanting (DAT). By 107 DAT, old Schizachyrium transplants had more shoot dry weight than young ones, but Coreopsis shoot dry weight was unaffected by transplant age. Root disturbance, irrespective of transplant age and species, decreased shoot dry weight at 35 DAT and decreased shoot relative growth rate between 0 and 35, but had no effect on these variables by 107 DAT. In the second study, transplants were raised in small (22 cm 3 , 1.4 in 3 ) or large (84 cm 3 , 5.1 in 3 ) cells, then transplanted at 62 or 76 days after planting, respectively, (to assure similar shoot size to plug cell volume ratio and to avoid root restriction) into small (15 cm, 6 in) or large (20 cm, 8 in) diameter standard pots. Shoot dry weights of both species were greater from large plug cell transplants by 35 DAT, but only of Coreopsis by 107 DAT. Large post-transplanting containers further contributed to the growth advantage of transplanting plants from large plug cells, responses that could be attributed to greater supplies of water nutrients in larger plug cells and post-transplanting containers.
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Claims 12
Claim · model-written summary
Older Coreopsis transplants had greater shoot dry weight by 35 DAT.
Verbatim
e0“By 35 days after transplanting, old transplants of both species had greater shoot dry weight than young ones”
t0“Lanceleaf Coreopsis”
Claim · model-written summary
Older Schizachyrium transplants had greater shoot dry weight by 35 DAT.
Verbatim
e0“By 35 days after transplanting, old transplants of both species had greater shoot dry weight than young ones”
t0“Little Bluestem”
Claim · model-written summary
Young Coreopsis transplants had greater relative growth and assimilation rates at 0–35 DAT.
Verbatim
e0“By 35 days after transplanting, old transplants of both species had greater shoot dry weight than young ones even though the latter had greater shoot relative growth rate and shoot net assimilation rate between 0 and 35 days after transplanting (DAT).”
t0“Lanceleaf Coreopsis”
Claim · model-written summary
Young Schizachyrium transplants had greater relative growth and assimilation rates at 0–35 DAT.
- Taxon
- Little Bluestemt0
- Treatment
- the lattere0
- Outcome
- shoot relative growth rate and shoot net assimilation ratee0
- Direction
- greatere0
Not reportedComparator
Verbatim
e0“the latter had greater shoot relative growth rate and shoot net assimilation rate between 0 and 35 days after transplanting (DAT).”
t0“Little Bluestem”
Claim · model-written summary
Old Schizachyrium transplants had more shoot dry weight by 107 DAT.
- Taxon
- Schizachyrium
Schizachyriume0 - Treatment
- old Schizachyrium transplantse0
- Outcome
- shoot dry weighte0
- Direction
- moree0
- Comparator
- young onese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“By 107 DAT, old Schizachyrium transplants had more shoot dry weight than young ones”
Claim · model-written summary
Coreopsis shoot dry weight at 107 DAT was unaffected by transplant age.
CoreopsisNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Coreopsis shoot dry weight was unaffected by transplant age.”
Claim · model-written summary
Root disturbance reduced shoot dry weight at 35 DAT.
Not reportedComparator
Verbatim
e0“Root disturbance, irrespective of transplant age and species, decreased shoot dry weight at 35 DAT”
t0“Lanceleaf Coreopsis”
Claim · model-written summary
Root disturbance reduced shoot relative growth rate at 0–35 DAT.
- Taxon
- Little Bluestemt0
- Treatment
- Root disturbancee0
- Outcome
- shoot relative growth ratee0
- Direction
- decreasede0
Not reportedComparator
Verbatim
e0“Root disturbance, irrespective of transplant age and species, decreased shoot dry weight at 35 DAT and decreased shoot relative growth rate between 0 and 35”
t0“Little Bluestem”
Claim · model-written summary
The root disturbance effect on these shoot variables was absent by 107 DAT.
Not reportedTreatmentComparator
Verbatim
e0“but had no effect on these variables by 107 DAT.”
t0“Lanceleaf Coreopsis”
Claim · model-written summary
Large plug cells increased shoot dry weight in both species by 35 DAT.
- Taxon
- Lanceleaf Coreopsist0
- Treatment
- large plug cell transplantse0
- Outcome
- Shoot dry weightse0
- Direction
- greatere0
Not reportedComparator
Verbatim
e0“Shoot dry weights of both species were greater from large plug cell transplants by 35 DAT”
t0“Lanceleaf Coreopsis”
Claim · model-written summary
At 107 DAT the large plug advantage persisted only in Coreopsis.
- Outcome
- Coreopsise0
Not reportedTreatmentComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but only of Coreopsis by 107 DAT.”
Claim · model-written summary
Large post-transplant containers enhanced the growth advantage of large plug transplants.
- Taxon
- Lanceleaf Coreopsist0
- Treatment
- Large post-transplanting containerse0
- Outcome
- growth advantagee0
- Direction
- further contributede0
Not reportedComparator
Verbatim
e0“Large post-transplanting containers further contributed to the growth advantage of transplanting plants from large plug cells”
t0“Lanceleaf Coreopsis”