Abstract
Abstract Field investigations were conducted to evaluate the response of corn ( Zea mays L.) to residual Zn in Litz silt loam and to determine the level of Zn required to correct Zn deficiency in corn on Westmoreland silty clay loam. Corn yields were increased on the Litz soil in 1969, where 7 and 14 kg Zn/ha as broadcast ZnSO 4 , and 4.4 kg Zn/ha as broadcast Zn‐EDTA were applied in 1968. A lower level of broadcast Zn‐EDTA of 2.2 kg Zn/ha was inadequate to increase yield. The residual Zn from application of 14 kg Zn/ha as ZnSO 4 increased yield to a greater extent than residual Zn from application of 4.4 kg Zn/ha as Zn‐EDTA. Residual Zn from application of 7 kg Zn/ha as ZnSO 4 was intermediate between these treatments in increasing yield. More than 13.6 kg Zn/ha as broadcast ZnSO 4 was required to correct Zn deficiency of corn on a Westmoreland silty clay loam.
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Claims 6
Claim · model-written summary
Broadcast ZnSO 4 at 7 and 14 kg Zn/ha increased corn yield.
- Taxon
- Corn
Zea mays subsp. mayse0 - Treatment
- 7 and 14 kg Zn/ha as broadcast ZnSO 4e0
- Outcome
- Corn yieldse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Corn yields were increased on the Litz soil in 1969, where 7 and 14 kg Zn/ha as broadcast ZnSO 4 , and 4.4 kg Zn/ha as broadcast Zn‐EDTA were applied in 1968.”
Claim · model-written summary
Broadcast Zn‐EDTA at 4.4 kg Zn/ha increased corn yield.
- Taxon
- CornZea mays subsp. mayse0
- Treatment
- 4.4 kg Zn/ha as broadcast Zn‐EDTAe0
- Outcome
- Corn yieldse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Corn yields were increased on the Litz soil in 1969, where 7 and 14 kg Zn/ha as broadcast ZnSO 4 , and 4.4 kg Zn/ha as broadcast Zn‐EDTA were applied in 1968.”
Claim · model-written summary
A 2.2 kg Zn/ha Zn‐EDTA rate was inadequate to increase yield.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- broadcast Zn‐EDTA of 2.2 kg Zn/hae0
- Outcome
- yielde0
- Direction
- inadequate to increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A lower level of broadcast Zn‐EDTA of 2.2 kg Zn/ha was inadequate to increase yield.”
t0“Corn”
Claim · model-written summary
Residual 14 kg Zn/ha ZnSO 4 increased yield more than 4.4 kg Zn/ha Zn‐EDTA.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- 14 kg Zn/ha as ZnSO 4e0
- Outcome
- yielde0
- Direction
- increasede0
- Comparator
- 4.4 kg Zn/ha as Zn‐EDTAe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The residual Zn from application of 14 kg Zn/ha as ZnSO 4 increased yield to a greater extent than residual Zn from application of 4.4 kg Zn/ha as Zn‐EDTA.”
t0“Corn”
Claim · model-written summary
Residual 7 kg Zn/ha ZnSO 4 had an intermediate yield response.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- 7 kg Zn/ha as ZnSO 4e0
- Outcome
- yielde0
- Direction
- increasinge0
- Comparator
- these treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Residual Zn from application of 7 kg Zn/ha as ZnSO 4 was intermediate between these treatments in increasing yield.”
t0“Corn”
Claim · model-written summary
More than 13.6 kg Zn/ha ZnSO 4 was required to correct corn zinc deficiency.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- More than 13.6 kg Zn/ha as broadcast ZnSO 4e0
- Outcome
- correct Zn deficiencye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“More than 13.6 kg Zn/ha as broadcast ZnSO 4 was required to correct Zn deficiency of corn on a Westmoreland silty clay loam.”
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