Abstract
Liming is often applied to alleviate soil acidification and increase crop yield on acidic soils, but its effect on soil phosphorus (P) availability is unclear, particularly in rice paddies. The objective of this study was to examine the effect of liming on rice production, yield and P uptake in a three-year field experiment in a double rice cropping system in subtropical China. We also conducted an incubation experiment to investigate the direct effect of liming on soil available P and phosphatase activities on paddy soils in the absence of plants. In the incubation experiment, liming reduced soil P availability (measured as Olsen-extractable P) by 14–17% and inhibited the activity of soil acid phosphatase. Nonetheless, lime application increased grain yield, biomass, and P uptake in the field. Liming increased grain yield and P uptake more strongly for late rice (26 and 21%, respectively) than for early rice (15 and 8%, respectively). Liming reduced the concentration of soil available P in the field as well, reflecting the increase in rice P uptake and the direct negative effect of liming on soil P availability. Taken together, these results suggest that by stimulating rice growth, liming can overcome direct negative effects on soil P availability and increase plant P uptake in this acidic paddy soil where P is not the limiting factor.
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Claims 9
Claim · model-written summary
Liming reduced Olsen-extractable soil phosphorus by 14–17% in incubation.
- Taxon
- rice
Oryza sativat0 - Treatment
- liminge0
- Outcome
- soil P availabilitye0
- Direction
- reducede0
- Value
- 14–17%e0
- Setting
- incubation experimente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“In the incubation experiment, liming reduced soil P availability (measured as Olsen-extractable P) by 14–17%”
Claim · model-written summary
Liming inhibited soil acid phosphatase activity in incubation.
- Taxon
- riceOryza sativat0
- Treatment
- liminge0
- Outcome
- activity of soil acid phosphatasee0
- Direction
- inhibitede0
- Setting
- incubation experimente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“In the incubation experiment, liming reduced soil P availability (measured as Olsen-extractable P) by 14–17% and inhibited the activity of soil acid phosphatase.”
Claim · model-written summary
Lime application increased rice biomass in the field.
- Taxon
- riceOryza sativat0
- Treatment
- lime applicatione0
- Outcome
- biomasse0
- Direction
- increasede0
- Setting
- fielde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“lime application increased grain yield, biomass, and P uptake in the field.”
Claim · model-written summary
Liming increased late rice grain yield by 26%.
- Taxon
- riceOryza sativae0
- Organ / stage
- late ricee0
- Treatment
- Liminge0
- Outcome
- grain yielde0
- Direction
- increasede0
- Value
- 26e0
- Qualifier
- more stronglye0
- Comparator
- early ricee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Liming increased grain yield and P uptake more strongly for late rice (26 and 21%, respectively) than for early rice (15 and 8%, respectively).”
Claim · model-written summary
Liming increased late rice phosphorus uptake by 21%.
- Taxon
- riceOryza sativae0
- Organ / stage
- late ricee0
- Treatment
- Liminge0
- Outcome
- P uptakee0
- Direction
- increasede0
- Value
- 21%e0
- Comparator
- early ricee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Liming increased grain yield and P uptake more strongly for late rice (26 and 21%, respectively) than for early rice (15 and 8%, respectively).”
Claim · model-written summary
Liming increased early rice grain yield by 15%.
- Taxon
- riceOryza sativae0
- Organ / stage
- early ricee0
- Treatment
- Liminge0
- Outcome
- grain yielde0
- Direction
- increasede0
- Value
- 15e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Liming increased grain yield and P uptake more strongly for late rice (26 and 21%, respectively) than for early rice (15 and 8%, respectively).”
Claim · model-written summary
Liming increased early rice phosphorus uptake by 8%.
- Taxon
- riceOryza sativae0
- Organ / stage
- early ricee0
- Treatment
- Liminge0
- Outcome
- P uptakee0
- Direction
- increasede0
- Value
- 8%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Liming increased grain yield and P uptake more strongly for late rice (26 and 21%, respectively) than for early rice (15 and 8%, respectively).”
Claim · model-written summary
Liming reduced field soil available phosphorus concentration.
- Taxon
- riceOryza sativat0
- Treatment
- Liminge0
- Outcome
- concentration of soil available Pe0
- Direction
- reducede0
- Setting
- fielde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Liming reduced the concentration of soil available P in the field as well”
Claim · model-written summary
The authors suggest stimulated rice growth can overcome lower soil phosphorus availability to increase plant phosphorus uptake.
- Taxon
- riceOryza sativae0
- Treatment
- liminge0
- Outcome
- plant P uptakee0
- Qualifier
- where P is not the limiting factore0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“by stimulating rice growth, liming can overcome direct negative effects on soil P availability and increase plant P uptake in this acidic paddy soil where P is not the limiting factor.”
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See all 55 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.