Abstract
Zinc (Zn) can be considered the primal micronutrient for the corn culture (Zea mays L.), being, its use, widespread in Brazil and the world, however, studies correlating levels and sources of this element are needed to provide better recommendations for each region and soil type, and thus enable the better use of fertilizers on farms. The objective of this study it was evaluate the effect of different sources and levels of Zn applied in corn for the western region of Parana. This way, it was studied the behavior of eight sources and four levels of Zn on the productivity, yield components and leaf contents of Zn of corn plants in a Rhodic Eutrudox. Significant differences among the sources and levels in the availability of Zn for plants and among levels for productivity was founded. For yield components the treatments had no effect. This way, under the experiment conditions, the fertilization with Zn provides increase of the income for the corn crop, however, levels greater than 4.0 kg ha-1 are not justified.
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Claims 5
Claim · model-written summary
Zinc availability differed significantly among fertilizer sources and levels.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- sources and levelse1
- Outcome
- availability of Zn for plantse1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“corn plants”
e1“Significant differences among the sources and levels in the availability of Zn for plants”
Claim · model-written summary
Productivity differed significantly among zinc levels.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- levelse1
- Outcome
- productivitye1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“corn plants”
e1“among levels for productivity was founded”
Claim · model-written summary
Zinc treatments had no effect on yield components.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- treatmentse1
- Outcome
- yield componentse1
- Direction
- no effecte1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“corn plants”
e1“For yield components the treatments had no effect.”
Claim · model-written summary
Zinc fertilization increased corn income under the experiment conditions.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- fertilization with Zne1
- Outcome
- incomee1
- Direction
- increasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“corn crop”
e1“under the experiment conditions, the fertilization with Zn provides increase of the income for the corn crop”
Claim · model-written summary
The authors conclude that zinc rates above 4.0 kg ha-1 are not justified.
- Taxon
- cornZea mays subsp. mayse0
- Outcome
- levels greater than 4.0 kg ha-1 are not justifiede1
- Value
- 4.0 kg ha-1e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“corn crop”
e1“levels greater than 4.0 kg ha-1 are not justified”
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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.