Abstract
Comparisons of the effectiveness of the various zinc sources have, in past research, produced conflicting results. Therefore, this study was conducted to evaluate the effect of zinc source, zinc rate, and phosphorus carrier on corn production in the western corn belt of the United States. Three sites were selected representing a wide range of soil pH and other soil properties. The zinc sources were mixed with a suspension fertilizer (8–8.8–4.8) to supply four rates of zinc. The fertilizer was placed below and to the side of the seed at planting. Whole plant samples collected at two stages of growth and ear leaf samples collected at silking were used to evaluate the influence of zinc source, zinc rate, and phosphorus carrier on zinc uptake by corn. Zinc uptake by plants sampled three weeks after emergence was influenced by zinc source, zinc rate, and phosphorus carrier. Differences among sources were related to soil properties. Phosphorus carrier had no effect on zinc uptake at a later growth stage. Differences in zinc uptake brought about by the different zinc sources and phosphorus carriers were not reflected in yield. Application of zinc increased yield at one of the three sites, 1.7 kilograms of zinc per hectare being adequate for maximum yield. Neither zinc source nor carrier had any effect on yield throughout the study. The data showed no advantage of the chelated forms of zinc over inorganic forms when they were applied in a suspension fertilizer to the side of and below the seed at planting.
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Claims 10
Claim · model-written summary
Zinc uptake by corn three weeks after emergence was influenced by zinc source.
- Taxon
- corn
Zea mays subsp. mayst0 - Treatment
- zinc sourcee1
- Outcome
- Zinc uptakee1
- Qualifier
- sampled three weeks after emergencee1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CORN”
e1“Zinc uptake by plants sampled three weeks after emergence was influenced by zinc source, zinc rate, and phosphorus carrier”
Claim · model-written summary
Zinc uptake by corn three weeks after emergence was influenced by zinc rate.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- zinc ratee1
- Outcome
- Zinc uptakee1
- Qualifier
- sampled three weeks after emergencee1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CORN”
e1“Zinc uptake by plants sampled three weeks after emergence was influenced by zinc source, zinc rate, and phosphorus carrier”
Claim · model-written summary
Zinc uptake by corn three weeks after emergence was influenced by phosphorus carrier.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- phosphorus carriere1
- Outcome
- Zinc uptakee1
- Qualifier
- sampled three weeks after emergencee1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CORN”
e1“Zinc uptake by plants sampled three weeks after emergence was influenced by zinc source, zinc rate, and phosphorus carrier”
Claim · model-written summary
Differences among zinc sources in corn were related to soil properties.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- sourcese2
- Outcome
- Differences among sourcese2
- Qualifier
- soil propertiese2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CORN”
e2“Differences among sources were related to soil properties”
Claim · model-written summary
Phosphorus carrier had no effect on zinc uptake by corn at a later growth stage.
- Taxon
- cornZea mays subsp. mayst0
- Organ / stage
- later growth stagee3
- Treatment
- Phosphorus carriere3
- Outcome
- zinc uptakee3
- Direction
- no_changeinferrede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CORN”
e3“Phosphorus carrier had no effect on zinc uptake at a later growth stage”
Claim · model-written summary
Differences in zinc uptake from zinc sources were not reflected in corn yield.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- zinc sourcese4
- Outcome
- yielde4
- Direction
- no_changeinferrede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CORN”
e4“Differences in zinc uptake brought about by the different zinc sources and phosphorus carriers were not reflected in yield”
Claim · model-written summary
Differences in zinc uptake from phosphorus carriers were not reflected in corn yield.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- phosphorus carrierse4
- Outcome
- yielde4
- Direction
- no_changeinferrede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CORN”
e4“Differences in zinc uptake brought about by the different zinc sources and phosphorus carriers were not reflected in yield”
Claim · model-written summary
Application of zinc increased corn yield at one of the three sites.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- Application of zince5
- Outcome
- yielde5
- Direction
- increasede5
- Setting
- one of the three sitese5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CORN”
e5“Application of zinc increased yield at one of the three sites, 1.7 kilograms of zinc per hectare being adequate for maximum yield”
Claim · model-written summary
Zinc at 1.7 kilograms per hectare was adequate for maximum corn yield.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- 1.7 kilograms of zinc per hectaree5
- Outcome
- maximum yielde5
- Direction
- maximume5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CORN”
e5“Application of zinc increased yield at one of the three sites, 1.7 kilograms of zinc per hectare being adequate for maximum yield”
Claim · model-written summary
Chelated zinc gave no yield advantage over inorganic zinc when applied in a suspension fertilizer beside and below the seed.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- chelated forms of zince6
- Outcome
- advantagee6
- Direction
- no_changeinferrede6
- Qualifier
- applied in a suspension fertilizere6
- Comparator
- inorganic formse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CORN”
e6“The data showed no advantage of the chelated forms of zinc over inorganic forms when they were applied in a suspension fertilizer to the side of and below the seed at planting”
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See all 627 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.