Abstract
Water and fertilizer application strategies seriously affect the healthy growth of peanuts. The stoichiometric ratio can directly reflect the elemental requirements for crop growth, which are very important for improving fertilizer utilization efficiency. In order to investigate the response of C (carbon), N (nitrogen), and P (phosphorus) allocation pattern and stoichiometric characteristics in peanut seedlings to water and nitrogen addition, we designed a greenhouse pot experiment which had different water treatments (W1, 75–80% field capacity; W2, 45–50% field capacity) and nitrogen addition treatments (N0, 0 kg hm−2; N1, 90 kg hm−2; N2, 180 kg hm−2). The distribution and content changes in C, N, and P in different organs were measured and analyzed by ecological stoichiometry. The results showed that drought stress significantly increased the N or P content of different organs. The average N/P value of peanut roots treated with W2 decreased by 13.02% compared to W1. Restoring irrigation relieved this stress while reducing the C/N and C/P of roots, stems, and leaves, as well as the N/P of roots and stems. The water treatment after rehydration showed significant differences in the C/N, C/P, and N/P ratios of peanut roots. The average values of the C/N, C/P, and N/P ratios of peanut roots in W2 treatment were reduced by 13.54%, 28.66%, and 16.34%, respectively, compared to W1 treatment. On the other hand, nitrogen application significantly increased the N content of stems and leaves, while reducing C/N. On the contrary, it significantly reduced the P content of roots and stems, and increased the N/P ratio of roots, stems, and leaves. Overall, there is a significant interaction between water and nitrogen treatment on the stoichiometric characteristics of C, N, and P in different organs, with water treatment playing a dominant role. In terms of nutrient distribution in organs, the average N content in leaves is the highest. The coefficient of variation (CV) of P content is greater than that of C and N content. The CV of N content, P content, and C/N and N/P ratios of the stem are all greater than those of the roots or leaves, while the stems are more sensitive to water and nitrogen conditions. And the N and P content of roots, stems, and leaves were positively correlated. Meanwhile, peanut seedlings have the phenomenon of ionic synergism that occurs between nitrogen and phosphorus ions. In summary, studying the stoichiometric ratios can reflect the water and fertilizer demand status of peanuts, thereby better improving water and fertilizer utilization efficiency.
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Claims 16
Claim · model-written summary
Drought increased N or P content in seedling organs.
- Taxon
- Peanut
Arachis hypogaeat0 - Treatment
- drought stresse0
- Outcome
- N or P contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that drought stress significantly increased the N or P content of different organs.”
t0“Peanut Seedlings”
Claim · model-written summary
Root N/P under W2 was 13.02% below W1.
- Taxon
- PeanutArachis hypogaeat0
- Organ / stage
- rootse0
- Treatment
- W2e0
- Outcome
- N/P valuee0
- Direction
- decreasede0
- Value
- 13.02%e0
- Comparator
- W1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The average N/P value of peanut roots treated with W2 decreased by 13.02% compared to W1.”
t0“Peanut Seedlings”
Claim · model-written summary
Restoring irrigation reduced C/N and C/P in roots, stems and leaves.
- Taxon
- PeanutArachis hypogaeat0
- Treatment
- Restoring irrigatione0
- Outcome
- C/N and C/P of roots, stems, and leavese0
- Direction
- reducinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Restoring irrigation relieved this stress while reducing the C/N and C/P of roots, stems, and leaves, as well as the N/P of roots and stems.”
t0“Peanut Seedlings”
Claim · model-written summary
Restoring irrigation reduced N/P in roots and stems.
- Taxon
- PeanutArachis hypogaeat0
- Treatment
- Restoring irrigatione0
- Outcome
- N/P of roots and stemse0
- Direction
- reducinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Restoring irrigation relieved this stress while reducing the C/N and C/P of roots, stems, and leaves, as well as the N/P of roots and stems.”
t0“Peanut Seedlings”
Claim · model-written summary
C/N in W2 peanut roots was reduced by 13.54% versus W1.
- Taxon
- peanutArachis hypogaeae0
- Organ / stage
- rootse0
- Treatment
- W2 treatmente0
- Outcome
- C/Ne0
- Direction
- reducede0
- Value
- 13.54%e0
- Comparator
- W1 treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The average values of the C/N, C/P, and N/P ratios of peanut roots in W2 treatment were reduced by 13.54%, 28.66%, and 16.34%, respectively, compared to W1 treatment.”
Claim · model-written summary
C/P in W2 peanut roots was reduced by 28.66% versus W1.
- Taxon
- peanutArachis hypogaeae0
- Organ / stage
- rootse0
- Treatment
- W2 treatmente0
- Outcome
- C/Pe0
- Direction
- reducede0
- Value
- 28.66%e0
- Comparator
- W1 treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The average values of the C/N, C/P, and N/P ratios of peanut roots in W2 treatment were reduced by 13.54%, 28.66%, and 16.34%, respectively, compared to W1 treatment.”
Claim · model-written summary
N/P in W2 peanut roots was reduced by 16.34% versus W1.
- Taxon
- peanutArachis hypogaeae0
- Organ / stage
- rootse0
- Treatment
- W2 treatmente0
- Outcome
- N/Pe0
- Direction
- reducede0
- Value
- 16.34%e0
- Comparator
- W1 treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The average values of the C/N, C/P, and N/P ratios of peanut roots in W2 treatment were reduced by 13.54%, 28.66%, and 16.34%, respectively, compared to W1 treatment.”
Claim · model-written summary
Nitrogen application increased N content of stems and leaves.
- Taxon
- PeanutArachis hypogaeat0
- Treatment
- nitrogen applicatione0
- Outcome
- N content of stems and leavese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On the other hand, nitrogen application significantly increased the N content of stems and leaves, while reducing C/N.”
t0“Peanut Seedlings”
Claim · model-written summary
Nitrogen application reduced C/N.
- Taxon
- PeanutArachis hypogaeat0
- Treatment
- nitrogen applicatione0
- Outcome
- C/Ne0
- Direction
- reducinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On the other hand, nitrogen application significantly increased the N content of stems and leaves, while reducing C/N.”
t0“Peanut Seedlings”
Claim · model-written summary
Nitrogen application reduced P content of roots and stems.
- Taxon
- PeanutArachis hypogaeat0
- Outcome
- P content of roots and stemse0
- Direction
- reducede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On the contrary, it significantly reduced the P content of roots and stems, and increased the N/P ratio of roots, stems, and leaves.”
t0“Peanut Seedlings”
Claim · model-written summary
Nitrogen application increased N/P in roots, stems and leaves.
- Taxon
- PeanutArachis hypogaeat0
- Outcome
- N/P ratio of roots, stems, and leavese0
- Direction
- increasede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On the contrary, it significantly reduced the P content of roots and stems, and increased the N/P ratio of roots, stems, and leaves.”
t0“Peanut Seedlings”
Claim · model-written summary
Water and nitrogen treatments interacted for organ C, N and P stoichiometry, with water dominant.
- Taxon
- PeanutArachis hypogaeat0
- Treatment
- water and nitrogen treatmente0
- Outcome
- stoichiometric characteristics of C, N, and P in different organse0
- Qualifier
- water treatment playing a dominant rolee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Overall, there is a significant interaction between water and nitrogen treatment on the stoichiometric characteristics of C, N, and P in different organs, with water treatment playing a dominant role.”
t0“Peanut Seedlings”
Claim · model-written summary
Leaves had the highest average N content.
- Taxon
- PeanutArachis hypogaeat0
- Outcome
- average N content in leavese0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In terms of nutrient distribution in organs, the average N content in leaves is the highest.”
t0“Peanut Seedlings”
Claim · model-written summary
P content varied more than C or N content.
- Taxon
- PeanutArachis hypogaeat0
- Outcome
- coefficient of variation (CV) of P contente0
- Direction
- greatere0
- Comparator
- C and N contente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The coefficient of variation (CV) of P content is greater than that of C and N content.”
t0“Peanut Seedlings”
Claim · model-written summary
Stem N, P, C/N and N/P varied more than in roots or leaves.
- Taxon
- PeanutArachis hypogaeat0
- Outcome
- CV of N content, P content, and C/N and N/P ratios of the steme0
- Direction
- greatere0
- Comparator
- roots or leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The CV of N content, P content, and C/N and N/P ratios of the stem are all greater than those of the roots or leaves, while the stems are more sensitive to water and nitrogen conditions.”
t0“Peanut Seedlings”
Claim · model-written summary
N and P contents were positively correlated across organs.
- Taxon
- PeanutArachis hypogaeat0
- Organ / stage
- roots, stems, and leavese0
- Outcome
- N and P content of roots, stems, and leavese0
- Direction
- positively correlatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“And the N and P content of roots, stems, and leaves were positively correlated.”
t0“Peanut Seedlings”
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See all 24 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.