Abstract
Abstract BACKGROUND: Rice is the most important staple food in Asia but has also been identified as one of the major sources of cadmium (Cd) intakes for some Asian population. This study investigated whether grain yield could be maintained but Cd in grains be reduced through proper irrigation management when rice was grown in Cd‐contaminated soil. RESULTS: Compared to the well watered treatment, the alternate wetting and moderate soil drying (MD, re‐watered when soil water potential decreased to −20 kPa) increased grain yield by 10–12% and improved milling and appearance quality of rice when grown in a soil containing a water‐soluble Cd content of 18 g kg −1 . An alternate wetting and severe soil drying (SD, re‐watered when soil water potential decreased to −40 kPa) showed an opposite effect. Both MD and SD significantly increased Cd content in roots while they reduced it in the straw. MD reduced Cd content by 19–21% in the grain and by 40% in milled rice. The SD significantly increased Cd content in the grain but reduced it in milled rice. CONCLUSION: An alternate wetting and moderate soil drying could increase rice yield and quality and also reduce Cd in the diet of rice. Copyright © 2009 Society of Chemical Industry
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Claims 8
Claim · model-written summary
Moderate drying increased rice grain yield by 10–12% versus well watered treatment.
- Taxon
- rice
Oryza sativat0 - Treatment
- alternate wetting and moderate soil dryinge0
- Outcome
- grain yielde0
- Direction
- increasede0
- Value
- 10–12%e0
- Comparator
- well watered treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared to the well watered treatment, the alternate wetting and moderate soil drying (MD, re‐watered when soil water potential decreased to −20 kPa) increased grain yield by 10–12%”
t0“rice”
Claim · model-written summary
Moderate drying improved rice milling and appearance quality versus well watered treatment.
- Taxon
- riceOryza sativat0
- Treatment
- alternate wetting and moderate soil dryinge0
- Outcome
- milling and appearance qualitye0
- Direction
- improvede0
- Comparator
- well watered treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared to the well watered treatment, the alternate wetting and moderate soil drying (MD, re‐watered when soil water potential decreased to −20 kPa) increased grain yield by 10–12% and improved milling and appearance quality of rice”
t0“rice”
Claim · model-written summary
Both moderate and severe drying increased rice root cadmium content.
- Taxon
- riceOryza sativat0
- Treatment
- MD and SDe0
- Outcome
- Cd content in rootse0
- Direction
- increasede0
- Comparator
- well watered treatmente3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both MD and SD significantly increased Cd content in roots”
t0“rice”
e1“moderate soil drying (MD, re‐watered when soil water potential decreased to −20 kPa)”
e2“severe soil drying (SD, re‐watered when soil water potential decreased to −40 kPa)”
e3“well watered treatment”
Claim · model-written summary
Both moderate and severe drying reduced rice straw cadmium content.
- Taxon
- riceOryza sativat0
- Treatment
- MD and SDe0
- Outcome
- strawe0
- Direction
- reducede0
- Comparator
- well watered treatmente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both MD and SD significantly increased Cd content in roots while they reduced it in the straw.”
t0“rice”
e1“well watered treatment”
Claim · model-written summary
Moderate drying reduced grain cadmium content by 19–21%.
- Taxon
- riceOryza sativat0
- Organ / stage
- graine0
- Treatment
- MDe0
- Outcome
- Cd contente0
- Direction
- reducede0
- Value
- 19–21%e0
- Comparator
- well watered treatmente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MD reduced Cd content by 19–21% in the grain and by 40% in milled rice.”
t0“rice”
e1“well watered treatment”
Claim · model-written summary
Moderate drying reduced cadmium in milled rice by 40%.
- Taxon
- riceOryza sativat0
- Organ / stage
- milled ricee0
- Treatment
- MDe0
- Outcome
- Cd contente0
- Direction
- reducede0
- Value
- 40%e0
- Comparator
- well watered treatmente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MD reduced Cd content by 19–21% in the grain and by 40% in milled rice.”
t0“rice”
e1“well watered treatment”
Claim · model-written summary
Severe drying increased grain cadmium content.
- Taxon
- riceOryza sativat0
- Treatment
- SDe0
- Outcome
- Cd content in the graine0
- Direction
- increasede0
- Comparator
- well watered treatmente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The SD significantly increased Cd content in the grain but reduced it in milled rice.”
t0“rice”
e1“well watered treatment”
Claim · model-written summary
Severe drying reduced cadmium content in milled rice.
- Taxon
- riceOryza sativat0
- Treatment
- SDe0
- Outcome
- milled ricee0
- Direction
- reducede0
- Comparator
- well watered treatmente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The SD significantly increased Cd content in the grain but reduced it in milled rice.”
t0“rice”
e1“well watered treatment”
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See all 114 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.