Abstract
Excessive supply of fertilizer N can lead to inefficient use of supplied N and consequently affect plant quality. Reduction of supplied fertilizer N can possibly increase plant N usage efficiency and improve quality. Chrysanthemum morifolium Ramat. cv. `Yellow Favor' was grown single stem in 10 cm pots on an ebb and flow benching system. All plants received 18.5 mM NO 3 - N, until the mid point of this ten wk crop, at which time the following NO 3 - concentrations (mM) were employed: 18.5, 15.5, 12.5, 9.5, clear water and clear water alternating with 18.5 mM NO 3 - . Plants were harvested at two wk intervals, cut in half and separated into leaves, stems plus petioles and inflorescence (when developed). Plant tissue from the lower half of the plant was analyzed for total and NO 3 - N, with reduced N being estimated as the difference between these two values. All growth parameters measured did not significantly differ, although termination of N fertilization (clear water) and reduction of NO 3 - level to 9.5 mM significantly reduced NO 3 - levels in the lower leaf and stem plus petioles, with a concomitant increase in reduced N in these tissues, over the 6-10 wk period. Total amounts of N accumulated in plant tissues analyzed did not differ significantly at flowering.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 5
Claim · model-written summary
Growth parameters did not differ significantly among nitrogen treatments.
- Taxon
- CHRYSANTHEMUM
.jpeg?width=60)
Chrysanthemumt0 - Treatment
- termination of N fertilization (clear water) and reduction of NO 3 - level to 9.5 mMe0
- Outcome
- growth parameterse0
- Direction
- did not significantly differe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpeg?width=500)
Verbatim
e0“All growth parameters measured did not significantly differ, although termination of N fertilization (clear water) and reduction of NO 3 - level to 9.5 mM significantly reduced NO 3 - levels in the lower leaf and stem plus petioles”
t0“CHRYSANTHEMUM”
Claim · model-written summary
Clear water reduced nitrate levels in lower leaves and stems plus petioles.
- Taxon
- CHRYSANTHEMUMChrysanthemumt0
- Treatment
- clear watere0
- Outcome
- NO 3 - levels in the lower leaf and stem plus petiolese0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“termination of N fertilization (clear water) and reduction of NO 3 - level to 9.5 mM significantly reduced NO 3 - levels in the lower leaf and stem plus petioles”
t0“POTTED CHRYSANTHEMUM”
Claim · model-written summary
A 9.5 mM nitrate supply reduced nitrate levels in lower leaves and stems plus petioles.
- Taxon
- CHRYSANTHEMUMChrysanthemumt0
- Treatment
- reduction of NO 3 - level to 9.5 mMe0
- Outcome
- NO 3 - levels in the lower leaf and stem plus petiolese0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“termination of N fertilization (clear water) and reduction of NO 3 - level to 9.5 mM significantly reduced NO 3 - levels in the lower leaf and stem plus petioles”
t0“POTTED CHRYSANTHEMUM”
Claim · model-written summary
Reduced nitrogen supply increased reduced nitrogen in the lower leaf and stem plus petioles during weeks 6 to 10.
- Taxon
- CHRYSANTHEMUMChrysanthemumt0
- Treatment
- REDUCTION OF NITROGEN FERTILIZATIONt0
- Outcome
- reduced Ne0
- Direction
- increasee0
- Qualifier
- 6-10 wk periode0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with a concomitant increase in reduced N in these tissues, over the 6-10 wk period.”
t0“REDUCTION OF NITROGEN FERTILIZATION REDUCES TISSUE NITRATE CONTENT IN POTTED CHRYSANTHEMUM”
Claim · model-written summary
Total nitrogen accumulated in analyzed tissues did not differ significantly at flowering.
- Taxon
- CHRYSANTHEMUMChrysanthemumt0
- Organ / stage
- floweringe0
- Treatment
- REDUCTION OF NITROGEN FERTILIZATIONt0
- Outcome
- Total amounts of N accumulated in plant tissuese0
- Direction
- did not differ significantlye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total amounts of N accumulated in plant tissues analyzed did not differ significantly at flowering.”
t0“REDUCTION OF NITROGEN FERTILIZATION REDUCES TISSUE NITRATE CONTENT IN POTTED CHRYSANTHEMUM”
The same questions in other papers
fertilization · growth · ChrysanthemumPositive and negative results
2 papers in the same direction as this paper · 49 in the opposite direction
- positive
- positive
- positive
48 papers more in this group
See all 52 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.