Abstract
Zinc is the micronutrient that presents the greatest response in corn grain production. However, the mode of application and the dose used are decisive factors with respect to fertilizer efficiency in the crop. Thus, the objective of the present study was to evaluate the residual effect of zinc application methods and rates on corn nutrition and productivity. The experiment was conducted in the experimental area of the Teaching, Research and Production Farm of the FCAV/UNESP. Soil in the area is classified as dystrophic Dark-Red Latosol (dRL). The experimental setup consisted of a randomized complete block design with four replications. Treatments included three localized Zn doses applied to the soil (planting row); three Zn doses incorporated into the soil at depth of 0 - 20 cm; foliar application, seed application and treatment without addition of Zn. Two evaluations of growth during cultivation were performed. Grain productivity of the crop and the zinc content in soil, leaves and seeds were evaluated. Foliar spraying with Zn simultaneously promoted increased leaf Zn content and basal diameter of the plant. The Zn contents in grains and in the soil, as well as grain yield, were not affected by the Zn application methods or the applied doses. The residual effect of incorporated Zn doses was observed only in the basal diameter and number of leaves at 60 days after emergence.
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Claims 5
Claim · model-written summary
Foliar zinc spraying increased corn leaf zinc content.
- Taxon
- Corn
Zea mays subsp. mayst0 - Treatment
- Foliar spraying with Zne0
- Outcome
- leaf Zn contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar spraying with Zn simultaneously promoted increased leaf Zn content and basal diameter of the plant.”
t0“Corn”
Claim · model-written summary
Foliar zinc spraying increased corn basal diameter.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- Foliar spraying with Zne0
- Outcome
- basal diametere0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar spraying with Zn simultaneously promoted increased leaf Zn content and basal diameter of the plant.”
t0“Corn”
Claim · model-written summary
Zinc application methods or doses did not affect zinc content in corn grains and soil.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- Zn application methods or the applied dosese0
- Outcome
- Zn contents in grains and in the soile0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Zn contents in grains and in the soil, as well as grain yield, were not affected by the Zn application methods or the applied doses.”
t0“Corn”
Claim · model-written summary
Zinc application methods or doses did not affect corn grain yield.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- Zn application methods or the applied dosese0
- Outcome
- grain yielde0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Zn contents in grains and in the soil, as well as grain yield, were not affected by the Zn application methods or the applied doses.”
t0“Corn”
Claim · model-written summary
Residual incorporated zinc affected corn basal diameter and leaf number at 60 days after emergence.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- incorporated Zn dosese0
- Outcome
- basal diameter and number of leavese0
- Qualifier
- 60 days after emergencee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The residual effect of incorporated Zn doses was observed only in the basal diameter and number of leaves at 60 days after emergence.”
t0“Corn”
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