Abstract
In this study the fertilizing effect of ZnEDTA (zinc ethylenediaminetetraacetate), and ZnSO4ּ 7H2O (ZnSO4ּ) (zinc sulphate heptahydrate) was compared on calcareous loam soil. A pot experiment was set up with maize (Zea mays L. var. ‘P37N01’). Plants were treated with basic NPK doses and with Zn at increasing rates: 0, 2.5, 5.0 and 10 mg kg-1 Zn in ZnEDTA and in ZnSO4 form, respectively. The ZnEDTA and ZnSO4 treatments increased the dry matter production compared to control by an average of 16%. Applying 2.5 mg kg-1 Zn, shoot Zn uptake was 1.3-fold greater by plants treated with ZnEDTA, than that of treated with ZnSO4. In the case of higher rates (5.0 mg kg-1 Zn and 10 mg kg-1 Zn), Zn uptake from ZnEDTA was approximately twice as much as that of ZnSO4. This result confirms that ZnEDTA as Zn complex is more effective than ZnSO4 on calcareous soil. The increasing ZnEDTA and ZnSO4 doses enhanced the soil’s initial diethylenetriaminepentaacetic acid (DTPA) Zn concentration to 1.8, 3.0, 6.3 mg kg-1 and 1.9, 3.5, and 6.5 mg kg-1, respectively. Contrary to our expectations, DTPA soil extractant was not able to indicate the difference in Zn availability between soils treated with ZnEDTA and ZnSO4. During the experiment, 0.6-1.7% of the added Zn doses were absorbed by the plants, and 48-59% of it could be measured back in the form of DTPA-Zn for both Zn fertilizers, the other half of the added Zn presumably converted to less available Zn forms.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 9
Claim · model-written summary
ZnEDTA and ZnSO4 increased maize dry matter production by an average of 16% versus control.
- Material
- P37N01e0
- Treatment
- ZnEDTA and ZnSO4 treatmentse1
- Outcome
- dry matter productione1
- Direction
- increasede1
- Value
- 16%e1
- Comparator
- controle1
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A pot experiment was set up with maize (Zea mays L. var. ‘P37N01’)”
e1“The ZnEDTA and ZnSO4 treatments increased the dry matter production compared to control by an average of 16%”
Claim · model-written summary
At 2.5 mg kg-1 Zn, ZnEDTA gave 1.3-fold greater shoot Zn uptake than ZnSO4.
- Treatment
- ZnEDTAe1
- Outcome
- shoot Zn uptakee1
- Direction
- greatere1
- Value
- 1.3-folde1
- Qualifier
- 2.5 mg kg-1 Zne1
- Comparator
- ZnSO4e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize (Zea mays L. var. ‘P37N01’)”
e1“Applying 2.5 mg kg-1 Zn, shoot Zn uptake was 1.3-fold greater by plants treated with ZnEDTA, than that of treated with ZnSO4”
Claim · model-written summary
At higher doses, maize Zn uptake from ZnEDTA was approximately twice that from ZnSO4.
- Treatment
- ZnEDTAe1
- Outcome
- Zn uptakee1
- Direction
- twice as muche1
- Value
- approximately twicee1
- Qualifier
- 5.0 mg kg-1 Zn and 10 mg kg-1 Zne1
- Comparator
- ZnSO4e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize (Zea mays L. var. ‘P37N01’)”
e1“In the case of higher rates (5.0 mg kg-1 Zn and 10 mg kg-1 Zn), Zn uptake from ZnEDTA was approximately twice as much as that of ZnSO4”
Claim · model-written summary
Increasing ZnEDTA doses enhanced soil DTPA Zn concentration to 1.8, 3.0 and 6.3 mg kg-1.
- Treatment
- ZnEDTAe1
- Outcome
- soil’s initial diethylenetriaminepentaacetic acid (DTPA) Zn concentratione1
- Direction
- enhancede1
- Value
- 1.8, 3.0, 6.3 mg kg-1e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize (Zea mays L. var. ‘P37N01’)”
e1“The increasing ZnEDTA and ZnSO4 doses enhanced the soil’s initial diethylenetriaminepentaacetic acid (DTPA) Zn concentration to 1.8, 3.0, 6.3 mg kg-1 and 1.9, 3.5, and 6.5 mg kg-1, respectively”
Claim · model-written summary
Increasing ZnSO4 doses enhanced soil DTPA Zn concentration to 1.9, 3.5 and 6.5 mg kg-1.
- Treatment
- ZnSO4e1
- Outcome
- soil’s initial diethylenetriaminepentaacetic acid (DTPA) Zn concentratione1
- Direction
- enhancede1
- Value
- 1.9, 3.5, and 6.5 mg kg-1e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize (Zea mays L. var. ‘P37N01’)”
e1“The increasing ZnEDTA and ZnSO4 doses enhanced the soil’s initial diethylenetriaminepentaacetic acid (DTPA) Zn concentration to 1.8, 3.0, 6.3 mg kg-1 and 1.9, 3.5, and 6.5 mg kg-1, respectively”
Claim · model-written summary
DTPA soil extractant failed to indicate the difference in Zn availability between fertilizer treatments.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize (Zea mays L. var. ‘P37N01’)”
e1“DTPA soil extractant was not able to indicate the difference in Zn availability between soils treated with ZnEDTA and ZnSO4”
Claim · model-written summary
Plants absorbed 0.6-1.7% of added Zn doses.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize (Zea mays L. var. ‘P37N01’)”
e1“0.6-1.7% of the added Zn doses were absorbed by the plants”
Claim · model-written summary
For both fertilizers, 48-59% of added Zn was measured back as DTPA-Zn.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize (Zea mays L. var. ‘P37N01’)”
e1“48-59% of it could be measured back in the form of DTPA-Zn for both Zn fertilizers”
Claim · model-written summary
The remaining added Zn presumably converted to less available forms.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize (Zea mays L. var. ‘P37N01’)”
e1“the other half of the added Zn presumably converted to less available Zn forms”
The same questions in other papers
zinc sulfate · yield · Zea mays (maize)Results differ
123 papers in the same direction as this paper · 3 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- no effect
- negative
124 papers more in this group
See all 128 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.