Abstract
Ilex opaca and Lagerstroemia indica plants were grown over 9 months using complete nutrient solutions differing in N concentration [(N) A : 15, 30, 60, 120, 210 and 300 mg·L –1 ]. Biomass production increased as (N) A were raised from 15 to 60 mg·L –1 , but was depressed by higher concentrations. Increases in (N) A produced higher shoot: root ratios. Maximum leaf N concentration was observed at 60 mg·L –1 , with similar values at higher (N) A . Plant survival, establishment and performance was evaluated over 15 weeks following transplant (15 WAT) to a landscape with minimum management conditions. Despite the initial significant differences in growth, shoot: root ratios and plant N status, plant establishment was not affected following transplant. Plant characteristics changed significantly over time, and by 15 WAT, all of the measured variables were statistically the same across all treatments. Flowering was, however, delayed over several weeks for Lagerstroemia indica plants grown at the higher (N) A . Analysis of these results indicate that plant production under relatively low N levels in the nursery maximizes N fertilizer use efficiency without affecting landscape establishment and performance.
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Claims 8
Claim · model-written summary
from 15 to 60 mg·L –1 nitrogen concentrations increased biomass production in the two nursery species.
Not reportedTaxonComparator
Verbatim
e0“Biomass production increased as (N) A were raised from 15 to 60 mg·L –1 , but was depressed by higher concentrations.”
t0“Does Nitrogen Nutrition in the Nursery Affect Plant Establishment and Performance in the Landscape?”
Claim · model-written summary
higher concentrations nitrogen concentrations depressed biomass production in the two nursery species.
Not reportedTaxonComparator
Verbatim
e0“Biomass production increased as (N) A were raised from 15 to 60 mg·L –1 , but was depressed by higher concentrations.”
t0“Does Nitrogen Nutrition in the Nursery Affect Plant Establishment and Performance in the Landscape?”
Claim · model-written summary
Higher nitrogen concentration increased shoot to root ratios.
Not reportedTaxonComparator
Verbatim
e0“Increases in (N) A produced higher shoot: root ratios.”
Claim · model-written summary
Leaf nitrogen concentration was highest at 60 mg·L –1.
Not reportedTaxon
Verbatim
e0“Maximum leaf N concentration was observed at 60 mg·L –1 , with similar values at higher (N) A .”
Claim · model-written summary
Nursery nitrogen treatments did not affect establishment after transplant.
Not reportedTaxonTreatmentComparator
Verbatim
e0“Despite the initial significant differences in growth, shoot: root ratios and plant N status, plant establishment was not affected following transplant.”
Claim · model-written summary
Measured plant characteristics converged across treatments by 15 weeks after transplant.
Not reportedTaxon
Verbatim
e0“Plant characteristics changed significantly over time, and by 15 WAT, all of the measured variables were statistically the same across all treatments.”
Claim · model-written summary
Higher nursery nitrogen delayed flowering of Lagerstroemia indica by several weeks.
- Taxon
- Lagerstroemia indica
_em_um_fim_de_tarde_em_Bag%C3%A9-RS.jpg?width=60)
Lagerstroemia indicae0 - Treatment
- higher (N) Ae0
- Outcome
- Floweringe0
- Direction
- delayede0
- Value
- several weekse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_em_um_fim_de_tarde_em_Bag%C3%A9-RS.jpg?width=500)
Verbatim
e0“Flowering was, however, delayed over several weeks for Lagerstroemia indica plants grown at the higher (N) A .”
Claim · model-written summary
The authors conclude that relatively low nursery nitrogen maximizes nitrogen use efficiency without harming landscape establishment.
- Outcome
- plant production under relatively low N levels in the nurserye0
Not reportedTaxon
Verbatim
e0“Analysis of these results indicate that plant production under relatively low N levels in the nursery maximizes N fertilizer use efficiency without affecting landscape establishment and performance.”