Abstract
Growth of rice when soil phosphorus (P), potassium (K), and moisture are co-limiting is poorly known. An experiment was conducted using two rice varieties [long (LD) and short (SD) duration], two moisture conditions (continuous flooding and top-soil drained after flowering), and five fertilizer treatments (with and without the applications of P and/or K). Phosphorus uptake rate, translocation of P and K from roots, and retranslocation of P and K from senescing leaves were reduced in drained soil compared with flooded condition. LD had greater- root length, root dry weight, specific root length (m g−1), and increased availability of P in soil than SD. Even though LD was better adapted to co-limitations of P, K, and moisture in soil than SD, those adaptive responses were not sufficient to increase the arrested growth, P and K nutrition when P, K and moisture supply was co-limited than their optimal supply.
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Claims 8
Claim · model-written summary
Soil drainage reduced phosphorus uptake rate relative to flooding.
- Taxon
- rice
Oryza sativat0 - Treatment
- drained soile0
- Outcome
- Phosphorus uptake ratee0
- Direction
- reducede0
- Comparator
- flooded conditione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phosphorus uptake rate, translocation of P and K from roots, and retranslocation of P and K from senescing leaves were reduced in drained soil compared with flooded condition”
t0“rice”
Claim · model-written summary
Soil drainage reduced translocation of P and K from roots relative to flooding.
- Taxon
- riceOryza sativat0
- Treatment
- drained soile0
- Outcome
- translocation of P and K from rootse0
- Direction
- reducede0
- Comparator
- flooded conditione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phosphorus uptake rate, translocation of P and K from roots, and retranslocation of P and K from senescing leaves were reduced in drained soil compared with flooded condition”
t0“rice”
Claim · model-written summary
Soil drainage reduced retranslocation of P and K from senescing leaves relative to flooding.
- Taxon
- riceOryza sativat0
- Treatment
- drained soile0
- Outcome
- retranslocation of P and K from senescing leavese0
- Direction
- reducede0
- Comparator
- flooded conditione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phosphorus uptake rate, translocation of P and K from roots, and retranslocation of P and K from senescing leaves were reduced in drained soil compared with flooded condition”
t0“rice”
Claim · model-written summary
LD had greater root length, root dry weight, and specific root length than SD.
- Taxon
- riceOryza sativat0
- Material
- LDe0
- Outcome
- root length, root dry weight, specific root lengthe0
- Direction
- greater-e0
- Comparator
- SDe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“LD had greater- root length, root dry weight, specific root length (m g−1), and increased availability of P in soil than SD”
t0“rice”
Claim · model-written summary
LD increased soil P availability relative to SD.
- Taxon
- riceOryza sativat0
- Material
- LDe0
- Outcome
- availability of P in soile0
- Direction
- increasede0
- Comparator
- SDe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“LD had greater- root length, root dry weight, specific root length (m g−1), and increased availability of P in soil than SD”
t0“rice”
Claim · model-written summary
LD was better adapted to P, K, and moisture co-limitations than SD.
- Taxon
- riceOryza sativat0
- Material
- LDe0
- Outcome
- adapted to co-limitations of P, K, and moisturee0
- Direction
- bettere0
- Comparator
- SDe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“LD was better adapted to co-limitations of P, K, and moisture in soil than SD”
t0“rice”
Claim · model-written summary
Co-limitation arrested rice growth compared with optimal supply despite LD adaptation.
- Taxon
- riceOryza sativat0
- Treatment
- P, K and moisture supply was co-limitede0
- Outcome
- growthe0
- Direction
- arrestede0
- Comparator
- optimal supplye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“those adaptive responses were not sufficient to increase the arrested growth, P and K nutrition when P, K and moisture supply was co-limited than their optimal supply”
t0“rice”
Claim · model-written summary
Co-limitation did not improve rice P and K nutrition compared with optimal supply despite LD adaptation.
- Taxon
- riceOryza sativat0
- Treatment
- P, K and moisture supply was co-limitede0
- Outcome
- P and K nutritione0
- Direction
- not sufficient to increasee0
- Comparator
- optimal supplye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“those adaptive responses were not sufficient to increase the arrested growth, P and K nutrition when P, K and moisture supply was co-limited than their optimal supply”
t0“rice”
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See all 168 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.