Abstract
Desorption of Zn from sorbed Zn in soils is controlled by different moisture regimes in rice fields and thus control the Zn availability to rice. A laboratory experiment was conducted at different moisture regimes viz. flooded-dried, alternate wetting and drying and preflooding condition in two Inceptisols and two Alfisols of West Bengal, India, with (50 g kg − 1) and without starch as control to investigate the desorption of adsorbed Zn from Zn-EDTA (0.0, 0.1, and 0.2 mg Zn g − 1 soil). Percent desorption of Zn was found significantly higher on alternate wetting and drying condition in Alfisols. Starch applications enhanced desorption under flooded-dried and alternate wetting and drying, but decreased it under preflooding conditions. The variations in Zn desorption among soils and moisture treatments are the result of changes in soil pH, Fe-oxides, bonding energy constants, and free energies for Zn adsorption. After desorption experiment a pot trial was conducted with rice (cv. IET-4094) under alternate wetting and drying moisture conditions. The results show that the dry matter yield and 1000 grain weight of rice are appreciably higher when alternate flooding and drying moisture condition was maintained. This finding was in close agreement with the Zn desorption studies under the alternate flooding and drying moisture regimes.
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Claims 6
Claim · model-written summary
Alternate wetting and drying gave significantly higher zinc desorption in Alfisols.
Not reportedTaxon
Verbatim
e0“Percent desorption of Zn was found significantly higher on alternate wetting and drying condition in Alfisols.”
Claim · model-written summary
Starch enhanced zinc desorption under flooded-dried conditions.
Not reportedTaxonComparator
Verbatim
e0“Starch applications enhanced desorption under flooded-dried and alternate wetting and drying, but decreased it under preflooding conditions.”
Claim · model-written summary
Starch enhanced zinc desorption under alternate wetting and drying.
- Treatment
- Starch applicationse0
- Outcome
- desorptione0
- Direction
- enhancede0
- Qualifier
- alternate wetting and dryinge0
Not reportedTaxonComparator
Verbatim
e0“Starch applications enhanced desorption under flooded-dried and alternate wetting and drying, but decreased it under preflooding conditions.”
Claim · model-written summary
Starch decreased zinc desorption under preflooding conditions.
- Treatment
- Starch applicationse0
- Outcome
- desorptione0
- Direction
- decreasede0
- Qualifier
- preflooding conditionse0
Not reportedTaxonComparator
Verbatim
e0“Starch applications enhanced desorption under flooded-dried and alternate wetting and drying, but decreased it under preflooding conditions.”
Claim · model-written summary
Rice dry matter yield was higher under alternate flooding and drying.
- Taxon
- rice
Oryza sativae0 - Treatment
- alternate flooding and drying moisture conditione0
- Outcome
- dry matter yielde0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the dry matter yield and 1000 grain weight of rice are appreciably higher when alternate flooding and drying moisture condition was maintained.”
Claim · model-written summary
Rice 1000 grain weight was higher under alternate flooding and drying.
- Taxon
- riceOryza sativae0
- Treatment
- alternate flooding and drying moisture conditione0
- Outcome
- 1000 grain weighte0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the dry matter yield and 1000 grain weight of rice are appreciably higher when alternate flooding and drying moisture condition was maintained.”
The same questions in other papers
processing · yield · Oryza sativa (rice)Positive and negative results
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- negative
- no effect
- negative
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See all 114 papers →flooding · yield · Oryza sativa (rice)Positive and negative results
192 papers in the same direction as this paper · 82 in the opposite direction · 11 reporting no difference from an alternative
- positive
- negative
- negative
282 papers more in this group
See all 286 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.