Abstract
The effect of six Zn sources (Zn-phenolate, Zn-EDDHA, Zn-EDTA, Zn-lignosulfonate, Zn-polyflavonoid, and Zn-glucoheptonate) was studied by applying different Zn levels to a representative Calcic Haploxeralf neutral soil (the predominant clay is montmorillonite) in incubation and greenhouse experiments. Zinc soil behavior was evaluated by sequential DTPA and Mehlich-3 extraction procedures. In the incubation experiment, the highest percentage recovery values of Zn applied to soil occurred in the water-soluble plus exchangeable fraction (29%) in fertilization with 20 mg of Zn kg(-1) of Zn-EDTA fertilizer. In the greenhouse experiment with maize (Zea mays L.), a comparison of different Zn carriers showed that the application of six fertilizers did not significantly increase the plant dry matter yield among fertilizer treatments. The highest yield occurred when 20 mg of Zn kg(-1) was applied as Zn-EDDHA fertilizer (79.4 g per pot). The relative effectiveness of the Zn sources in increasing Zn concentration in plants was in the following order: Zn-EDTA (20 mg kg(-1)) > Zn-EDDHA (20 mg kg(-1)) approximately Zn-EDTA (10 mg kg(-1)) > Zn-EDDHA (10 mg kg(-1)) approximately Zn-phenolate (both rates) approximately Zn-polyflavonoid (both rates) approximately Zn-lignosulfonate (both rates) approximately Zn-glucoheptonate (both rates) > untreated Zn. The highest amounts of Zn taken up by the plants occurred when Zn was applied as Zn-EDTA fertilizer (20 mg kg(-1), 7.44 mg of Zn per pot; 10 mg kg(-1) Zn rate, 3.93 mg of Zn per pot) and when Zn was applied as Zn-EDDHA fertilizer (20 mg kg(-1) Zn rate, 4.66 mg Zn per pot). After the maize crop was harvested, sufficient quantities of available Zn remained in the soil (DTPA- or Mehlich-3-extractable Zn) for another harvest.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. 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 8
Claim · model-written summary
Zn-EDTA at 20 mg Zn kg(-1) gave the highest water-soluble plus exchangeable soil Zn recovery, 29%.
- Treatment
- 20 mg of Zn kg(-1) of Zn-EDTA fertilizere0
- Outcome
- water-soluble plus exchangeable fractione0
- Direction
- higheste0
- Value
- 29%e0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest percentage recovery values of Zn applied to soil occurred in the water-soluble plus exchangeable fraction (29%) in fertilization with 20 mg of Zn kg(-1) of Zn-EDTA fertilizer.”
t0“Maize Fertilization”
Claim · model-written summary
Six zinc fertilizers did not significantly increase maize dry matter yield among fertilizer treatments.
- Treatment
- six fertilizerse0
- Outcome
- plant dry matter yielde0
- Direction
- did not significantly increasee0
- Comparator
- fertilizer treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of six fertilizers did not significantly increase the plant dry matter yield among fertilizer treatments.”
e1“greenhouse experiment with maize (Zea mays L.)”
Claim · model-written summary
The highest maize dry matter yield, 79.4 g per pot, occurred with 20 mg Zn kg(-1) as Zn-EDDHA.
- Treatment
- 20 mg of Zn kg(-1) was applied as Zn-EDDHA fertilizere0
- Outcome
- yielde0
- Direction
- higheste0
- Value
- 79.4 g per pote0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest yield occurred when 20 mg of Zn kg(-1) was applied as Zn-EDDHA fertilizer (79.4 g per pot).”
e1“greenhouse experiment with maize (Zea mays L.)”
Claim · model-written summary
Zn-EDTA at 20 mg kg(-1) was the most effective zinc source for increasing maize zinc concentration.
- Treatment
- Zn-EDTA (20 mg kg(-1))e0
- Outcome
- Zn concentration in plantse0
- Direction
- increasinge0
- Comparator
- Zn-EDDHA (20 mg kg(-1))e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The relative effectiveness of the Zn sources in increasing Zn concentration in plants was in the following order: Zn-EDTA (20 mg kg(-1)) > Zn-EDDHA (20 mg kg(-1))”
e1“greenhouse experiment with maize (Zea mays L.)”
Claim · model-written summary
Maize zinc uptake reached 7.44 mg per pot with 20 mg kg(-1) Zn-EDTA.
- Treatment
- Zn-EDTA fertilizer (20 mg kg(-1)e0
- Outcome
- Zn taken up by the plantse1
- Direction
- higheste1
- Value
- 7.44 mg of Zn per pote0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zn-EDTA fertilizer (20 mg kg(-1), 7.44 mg of Zn per pot; 10 mg kg(-1) Zn rate, 3.93 mg of Zn per pot)”
e1“The highest amounts of Zn taken up by the plants occurred when Zn was applied as”
e2“greenhouse experiment with maize (Zea mays L.)”
Claim · model-written summary
Maize zinc uptake was 3.93 mg per pot with 10 mg kg(-1) Zn-EDTA.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“10 mg kg(-1) Zn rate, 3.93 mg of Zn per pot”
e1“Zn-EDTA fertilizer (20 mg kg(-1), 7.44 mg of Zn per pot; 10 mg kg(-1) Zn rate, 3.93 mg of Zn per pot)”
e2“greenhouse experiment with maize (Zea mays L.)”
Claim · model-written summary
Maize zinc uptake was 4.66 mg per pot with 20 mg kg(-1) Zn-EDDHA.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zn-EDDHA fertilizer (20 mg kg(-1) Zn rate, 4.66 mg Zn per pot)”
e1“greenhouse experiment with maize (Zea mays L.)”
Claim · model-written summary
After maize harvest, soil retained sufficient extractable zinc for another harvest.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After the maize crop was harvested, sufficient quantities of available Zn remained in the soil (DTPA- or Mehlich-3-extractable Zn) for another harvest.”
The same questions in other papers
zinc atom · nutrient: content · Zea mays (maize)Results differ
198 papers in the same direction as this paper · 33 in the opposite direction · 3 reporting no difference from an alternative
- positive
- positive
- positive
231 papers more in this group
See all 235 papers →fertilization · yield · Zea mays (maize)Positive and negative results
422 papers in the same direction as this paper · 3,485 reporting no difference from an alternative
- positive
- positive
- positive
3,904 papers more in this group
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.