Abstract
Nutrient resorption from senescing leaves is a pivotal component of nutrient conservation strategy in a plant. Thus understanding the response of nutrient resorption to fertilization is of great help to minimize fertilizer use and further optimize fertilization management. However, little is known about how nutrient resorption responds to fertilization in N2-fixing species. Nitrogen (N) and phosphorus (P) fertilizers were applied at different rates to alfalfa stands in the Loess Plateau. N fertilization hardly affected leaf N and K resorptions, but tended to increase P resorption. P fertilization increased N and K resorptions but affected P resorption in various ways. However, effect of N or P fertilization was significantly interplayed by P or N rate. At N100P60, alfalfa had the maximum biomass accumulation and less leaf resorption. Therefore, alfalfa could be performed well with 100 kg N ha−1 and 60 kg P2O5 ha−1 in this region.
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Claims 10
Claim · model-written summary
Nitrogen fertilizer hardly affected leaf nitrogen resorption.
- Taxon
- alfalfa
Medicago sativat0 - Treatment
- N fertilizatione0
- Outcome
- leaf Ne0
- Direction
- hardly affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N fertilization hardly affected leaf N and K resorptions”
t0“alfalfa”
Claim · model-written summary
Nitrogen fertilizer hardly affected leaf potassium resorption.
- Taxon
- alfalfaMedicago sativat0
- Treatment
- N fertilizatione0
- Outcome
- K resorptionse0
- Direction
- hardly affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N fertilization hardly affected leaf N and K resorptions”
t0“alfalfa”
Claim · model-written summary
Nitrogen fertilizer tended to increase phosphorus resorption.
- Taxon
- alfalfaMedicago sativat0
- Treatment
- N fertilizatione0
- Outcome
- P resorptione0
- Direction
- increasee0
- Qualifier
- tended toe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N fertilization hardly affected leaf N and K resorptions, but tended to increase P resorption”
t0“alfalfa”
Claim · model-written summary
Phosphorus fertilizer increased nitrogen resorption.
- Taxon
- alfalfaMedicago sativat0
- Treatment
- P fertilizatione0
- Outcome
- Ne0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P fertilization increased N and K resorptions”
t0“alfalfa”
Claim · model-written summary
Phosphorus fertilizer increased potassium resorption.
- Taxon
- alfalfaMedicago sativat0
- Treatment
- P fertilizatione0
- Outcome
- K resorptionse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P fertilization increased N and K resorptions”
t0“alfalfa”
Claim · model-written summary
Phosphorus fertilizer affected phosphorus resorption in varied ways.
- Taxon
- alfalfaMedicago sativat0
- Treatment
- P fertilizatione0
- Outcome
- P resorptione0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P fertilization increased N and K resorptions but affected P resorption in various ways”
t0“alfalfa”
Claim · model-written summary
Nitrogen and phosphorus rates significantly interacted in their effects.
- Taxon
- alfalfaMedicago sativat0
- Treatment
- N or P fertilizatione0
- Outcome
- effect of N or P fertilizatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“effect of N or P fertilization was significantly interplayed by P or N rate”
t0“alfalfa”
Claim · model-written summary
Alfalfa biomass accumulation was maximal at N100P60.
- Taxon
- alfalfaMedicago sativae0
- Treatment
- N100P60e0
- Outcome
- biomass accumulatione0
- Direction
- maximume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At N100P60, alfalfa had the maximum biomass accumulation and less leaf resorption”
Claim · model-written summary
Alfalfa leaf resorption was lower at N100P60.
- Taxon
- alfalfaMedicago sativae0
- Treatment
- N100P60e0
- Outcome
- leaf resorptione0
- Direction
- lesse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At N100P60, alfalfa had the maximum biomass accumulation and less leaf resorption”
Claim · model-written summary
The authors recommend 100 kg N and 60 kg P2O5 per hectare for alfalfa in the region.
- Taxon
- alfalfaMedicago sativae0
- Outcome
- could be performed well with 100 kg N ha−1 and 60 kg P2O5 ha−1e0
- Setting
- this regione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Therefore, alfalfa could be performed well with 100 kg N ha−1 and 60 kg P2O5 ha−1 in this region”
The same questions in other papers
fertilization · nutrient: content · Medicago sativa (alfalfa)Positive and negative results
9 papers in the same direction as this paper · 49 in the opposite direction
- positive
- positive
- positive
55 papers more in this group
See all 59 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.