Abstract
In a rice‐based cropping system soils are often subjected to different moisture regimes, which may influence desorption of adsorbed Zn and thus limit Zn availability to crops. Laboratory and greenhouse experiments were conducted to study the effect of moisture regimes with or without organic matter addition on changes in desorption of adsorbed Zn in soils and its utilization by rice and maize plants. Three different moisture regimes, flooded–dried, alternate wetting and drying and preflooding, with (50 g kg −1 ) and without (0 g kg −1 ) added organic matter were imposed in two Alfisols and two Inceptisols of West Bengal, India. Percent desorption of adsorbed Zn was significantly higher in Alfisols (64.5%) than in Inceptisols (45.5%). Desorption was also significantly higher under flooded–dried (61.4%), alternate wetting and drying (67.1%), and preflooding (47.3%) moisture treatments than in the control (43.4%). Organic matter application enhanced desorption under flooded–dried and alternate wetting and drying but decreased it under preflooding. The variation in Zn desorption among soils and moisture treatments is the result of changes in soil pH, Fe‐oxides, bonding energy constants, and free energies for Zn adsorption. Greenhouse experiments showed that dry matter yield and uptake and utilization of Zn for maize were higher under flooded–dried. For rice, yield and Zn accumulation were higher under preflooding treatments compared to the control in which the soils were not subjected to these pre‐plant moisture treatments. Soil‐zinc data and plant response were in close agreement, except in Inceptisols for rice under preflooding with added organic matter treatment. Results indicated a more efficient use of Zn fertilizer where maize followed rice, and where rice was grown after preflooding the soils.
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Claims 12
Claim · model-written summary
Adsorbed Zn desorption was higher in Alfisols than Inceptisols.
- Taxon
- Rice
Oryza sativat0 - Outcome
- Percent desorption of adsorbed Zne0
- Direction
- highere0
- Value
- 64.5%e0
- Qualifier
- 45.5%e0
- Comparator
- Inceptisolse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Percent desorption of adsorbed Zn was significantly higher in Alfisols (64.5%) than in Inceptisols (45.5%).”
t0“Rice and Maize”
Claim · model-written summary
Flooded–dried moisture increased Zn desorption relative to control.
- Taxon
- RiceOryza sativat0
- Treatment
- flooded–driede0
- Outcome
- Desorptione0
- Direction
- highere0
- Value
- 61.4%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Desorption was also significantly higher under flooded–dried (61.4%), alternate wetting and drying (67.1%), and preflooding (47.3%) moisture treatments than in the control (43.4%).”
t0“Rice and Maize”
Claim · model-written summary
Alternate wetting and drying increased Zn desorption relative to control.
- Taxon
- RiceOryza sativat0
- Treatment
- alternate wetting and dryinge0
- Outcome
- Desorptione0
- Direction
- highere0
- Value
- 67.1%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Desorption was also significantly higher under flooded–dried (61.4%), alternate wetting and drying (67.1%), and preflooding (47.3%) moisture treatments than in the control (43.4%).”
t0“Rice and Maize”
Claim · model-written summary
Preflooding increased Zn desorption relative to control.
- Taxon
- RiceOryza sativat0
- Treatment
- prefloodinge0
- Outcome
- Desorptione0
- Direction
- highere0
- Value
- 47.3%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Desorption was also significantly higher under flooded–dried (61.4%), alternate wetting and drying (67.1%), and preflooding (47.3%) moisture treatments than in the control (43.4%).”
t0“Rice and Maize”
Claim · model-written summary
Organic matter increased desorption under flooded–dried conditions.
- Taxon
- RiceOryza sativat0
- Treatment
- Organic matter applicatione0
- Outcome
- desorptione0
- Direction
- enhancede0
- Qualifier
- flooded–driede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Organic matter application enhanced desorption under flooded–dried and alternate wetting and drying but decreased it under preflooding.”
t0“Rice and Maize”
Claim · model-written summary
Organic matter increased desorption under alternate wetting and drying.
- Taxon
- RiceOryza sativat0
- Treatment
- Organic matter applicatione0
- Outcome
- desorptione0
- Direction
- enhancede0
- Qualifier
- alternate wetting and dryinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Organic matter application enhanced desorption under flooded–dried and alternate wetting and drying but decreased it under preflooding.”
t0“Rice and Maize”
Claim · model-written summary
Organic matter decreased desorption under preflooding.
- Taxon
- RiceOryza sativat0
- Treatment
- Organic matter applicatione0
- Outcome
- desorptione0
- Direction
- decreasede0
- Qualifier
- prefloodinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Organic matter application enhanced desorption under flooded–dried and alternate wetting and drying but decreased it under preflooding.”
t0“Rice and Maize”
Claim · model-written summary
Maize dry matter yield and Zn uptake and utilization were higher after flooded–dried treatment.
- Treatment
- flooded–driede0
- Outcome
- dry matter yield and uptake and utilization of Zne0
- Direction
- highere0
- Setting
- Greenhousee0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Greenhouse experiments showed that dry matter yield and uptake and utilization of Zn for maize were higher under flooded–dried.”
t0“Rice and Maize”
Claim · model-written summary
Rice yield and Zn accumulation were higher after preflooding than control.
- Taxon
- RiceOryza sativat0
- Treatment
- preflooding treatmentse0
- Outcome
- yield and Zn accumulatione0
- Direction
- highere0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For rice, yield and Zn accumulation were higher under preflooding treatments compared to the control in which the soils were not subjected to these pre‐plant moisture treatments.”
t0“Rice and Maize”
Claim · model-written summary
Soil Zn data and plant response generally agreed except in a specific rice treatment.
- Taxon
- RiceOryza sativat0
- Outcome
- plant responsee0
- Qualifier
- except in Inceptisols for rice under preflooding with added organic matter treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil‐zinc data and plant response were in close agreement, except in Inceptisols for rice under preflooding with added organic matter treatment.”
t0“Rice and Maize”
Claim · model-written summary
The authors inferred more efficient Zn fertilizer use when maize followed rice.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results indicated a more efficient use of Zn fertilizer where maize followed rice, and where rice was grown after preflooding the soils.”
t0“Rice and Maize”
Claim · model-written summary
The authors inferred more efficient Zn fertilizer use for rice after preflooding.
- Taxon
- RiceOryza sativat0
- Outcome
- more efficient use of Zn fertilizere0
- Qualifier
- where rice was grown after preflooding the soilse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results indicated a more efficient use of Zn fertilizer where maize followed rice, and where rice was grown after preflooding the soils.”
t0“Rice and Maize”
The same questions in other papers
flooding · yield · Zea mays (maize)Positive and negative results
5 papers in the same direction as this paper · 50 in the opposite direction
- negative
- negative
- negative
52 papers more in this group
See all 56 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.