Abstract
To test the effectiveness of coated and uncoated Zn fertilizers prepared with commercial zinc ethylenediaminetetraacetate (Zn−EDTA) and zinc lignosulfonate (Zn−LS), maize ( Zea mays L.) was greenhouse cultivated in calcareous soils dosed with 5, 10, and 15 mg·kg - 1 Zn. Crop yield increased from 25 g per pot in control to 42 and 39 g per pot when 15 mg·kg - 1 Zn was added by applying Zn−EDTA-3 and Zn−LS-0 fertilizers, respectively. Although big amounts of Zn were taken by plants, concentrations in soil increased from 43 to 55 and 57 mg·kg - 1 when 15 mg·kg - 1 Zn as Zn−EDTA-3 and Zn−LS-3 was applied. Rosin coating improved the performance of Zn−EDTA fertilizers but scarcely did in fertilizers with Zn−LS. A large part of Zn applied remained in the soil in forms easily available to plants (water soluble plus exchangeable, organic complexed, and DTPA-extractable Zn), more so when the source of Zn was zinc lignosulfonate. Positive, significant correlations were obtained between the variables, yield, Zn concentration, and Zn uptake by the plant with respect to the available Zn and the first two sequentially extracted fractions (water soluble plus exchangeable and organically complexed). The Zn uptake by maize could be fairly accurately predicted from the sequential fractioning in the soil after harvesting using an equation obtained through multiple regression analysis. Keywords: Calcareous soil; maize response; slow release; soil Zn status; Zn−EDTA; zinc lignosulfonate
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Claims 9
Claim · model-written summary
Zn−EDTA-3 at 15 mg·kg - 1 Zn raised maize yield to 42 g per pot from 25 g per pot.
Zea maysNot reportedMaterial
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Crop yield increased from 25 g per pot in control to 42 and 39 g per pot when 15 mg·kg - 1 Zn was added by applying Zn−EDTA-3 and Zn−LS-0 fertilizers, respectively”
t0“Maize”
Claim · model-written summary
Zn−LS-0 at 15 mg·kg - 1 Zn raised maize yield to 39 g per pot from 25 g per pot.
- Treatment
- Zn−LS-0 fertilizerse0
- Outcome
- Crop yielde0
- Direction
- increasede0
- Value
- 39 g per pote0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Crop yield increased from 25 g per pot in control to 42 and 39 g per pot when 15 mg·kg - 1 Zn was added by applying Zn−EDTA-3 and Zn−LS-0 fertilizers, respectively”
t0“Maize”
Claim · model-written summary
Soil zinc concentration increased to 55 mg·kg - 1 with Zn−EDTA-3.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“concentrations in soil increased from 43 to 55 and 57 mg·kg - 1 when 15 mg·kg - 1 Zn as Zn−EDTA-3 and Zn−LS-3 was applied”
t0“Maize”
Claim · model-written summary
Soil zinc concentration increased to 57 mg·kg - 1 with Zn−LS-3.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“concentrations in soil increased from 43 to 55 and 57 mg·kg - 1 when 15 mg·kg - 1 Zn as Zn−EDTA-3 and Zn−LS-3 was applied”
t0“Maize”
Claim · model-written summary
Rosin coating improved Zn−EDTA fertilizer performance.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rosin coating improved the performance of Zn−EDTA fertilizers”
t0“Maize”
Claim · model-written summary
Rosin coating scarcely improved Zn−LS fertilizer performance.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rosin coating improved the performance of Zn−EDTA fertilizers but scarcely did in fertilizers with Zn−LS”
t0“Maize”
Claim · model-written summary
A large fraction of applied zinc remained in plant-available soil forms, especially from zinc lignosulfonate.
- Treatment
- zinc lignosulfonatee0
- Outcome
- Zn applied remained in the soil in forms easily available to plantse0
- Direction
- more soe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A large part of Zn applied remained in the soil in forms easily available to plants (water soluble plus exchangeable, organic complexed, and DTPA-extractable Zn), more so when the source of Zn was zinc lignosulfonate”
t0“Maize”
Claim · model-written summary
Yield, plant zinc concentration and zinc uptake correlated significantly with available soil zinc and early extracted fractions.
- Compound
- available Zne0
- Outcome
- yield, Zn concentration, and Zn uptake by the plante0
- Direction
- Positivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Positive, significant correlations were obtained between the variables, yield, Zn concentration, and Zn uptake by the plant with respect to the available Zn and the first two sequentially extracted fractions (water soluble plus exchangeable and organically complexed)”
t0“Maize”
Claim · model-written summary
Soil sequential fractionation after harvest fairly accurately predicted maize zinc uptake.
- Outcome
- Zn uptake by maizee0
- Direction
- fairly accurately predictede0
- Comparator
- sequential fractioning in the soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Zn uptake by maize could be fairly accurately predicted from the sequential fractioning in the soil after harvesting using an equation obtained through multiple regression analysis”
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zinc atom · yield · Zea mays (maize)Results differ
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See all 3,908 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.