Abstract
Abstract Chloride nutrition of corn ( Zea mays L.) was investigated to determine if Cl limits production in high‐yield environments. Experiments were conducted to evaluate the effects of Cl fertilization on a Freehold sandy loam (fine‐loamy, mixed, mesic Typic Hapludults) near Adelphia, NJ, using irrigation and intensive crop production practices. Corn was grown at 107 600 plant ha −1 with equidistant spacing. All plots received 454 kg K ha −1 using KOH, K 2 SO 4 , or KCl to establish five treatments: 0, 50, 100, 200, and 400 kg Cl ha −1 . Positive responses of corn to added Cl were observed each year. In 1990, the Cl treatments averaged 1.1 Mg ha −1 more grain than the check yield of 11.3 Mg ha −1 ( P = 0.08). In 1991, the check yield was 19.0 Mg ha −1 and the response to Cl was linear up to the 400 kg ha −1 rate, which yielded 20.5 Mg ha −1 . In 1992, the Cl treatments averaged 0.5 Mg ha −1 more grain than the check yield of 14.5 Mg ha −1 ( P = 0.07). Grain yields were positively correlated with increases in ear‐leaf Cl concentration. Increases in grain yield were associated with increased ear size. Chloride did not increase stover yield. A linear decrease in incidence of stalk rot with Cl rate was observed in 1992. Results suggest that, when produced in high‐yield environments, corn may respond to enhanced levels of Cl nutrition.
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Claims 9
Claim · model-written summary
Added chloride gave positive corn responses each year.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- added Cle0
- Outcome
- Positive responsese0
- Direction
- Positivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Positive responses of corn to added Cl were observed each year”
Claim · model-written summary
In 1990 chloride treatments yielded 1.1 Mg ha −1 more grain than the check.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- Cl treatmentse0
- Outcome
- graine0
- Direction
- moree0
- Value
- 1.1 Mg ha −1e0
- Qualifier
- 11.3 Mg ha −1e0
- Comparator
- checke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 1990, the Cl treatments averaged 1.1 Mg ha −1 more grain than the check yield of 11.3 Mg ha −1 ( P = 0.08)”
t0“Corn”
Claim · model-written summary
In 1991 yield increased linearly to 20.5 Mg ha −1 at the 400 kg ha −1 chloride rate.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- 400 kg ha −1 ratee0
- Outcome
- yielde0
- Direction
- lineare0
- Value
- 20.5 Mg ha −1e0
- Qualifier
- 19.0 Mg ha −1e0
- Comparator
- checke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 1991, the check yield was 19.0 Mg ha −1 and the response to Cl was linear up to the 400 kg ha −1 rate, which yielded 20.5 Mg ha −1”
t0“Corn”
Claim · model-written summary
In 1992 chloride treatments yielded 0.5 Mg ha −1 more grain than the check.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- Cl treatmentse0
- Outcome
- graine0
- Direction
- moree0
- Value
- 0.5 Mg ha −1e0
- Qualifier
- 14.5 Mg ha −1e0
- Comparator
- checke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 1992, the Cl treatments averaged 0.5 Mg ha −1 more grain than the check yield of 14.5 Mg ha −1 ( P = 0.07)”
t0“Corn”
Claim · model-written summary
Grain yield correlated positively with ear-leaf chloride concentration.
- Taxon
- CornZea mays subsp. mayst0
- Organ / stage
- ear‐leafe0
- Compound
- Cle0
- Outcome
- Grain yieldse0
- Direction
- positively correlatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain yields were positively correlated with increases in ear‐leaf Cl concentration”
t0“Corn”
Claim · model-written summary
Higher grain yield was associated with increased ear size.
- Taxon
- CornZea mays subsp. mayst0
- Organ / stage
- eare0
- Outcome
- grain yielde0
- Direction
- Increasese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increases in grain yield were associated with increased ear size”
t0“Corn”
Claim · model-written summary
Chloride did not increase stover yield.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- Chloridee0
- Outcome
- stover yielde0
- Direction
- did not increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chloride did not increase stover yield”
t0“Corn”
Claim · model-written summary
Stalk rot incidence decreased linearly as chloride rate increased in 1992.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- Cl ratee0
- Outcome
- incidence of stalk rote0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A linear decrease in incidence of stalk rot with Cl rate was observed in 1992”
t0“Corn”
Claim · model-written summary
The authors suggested high-yield corn may respond to enhanced chloride nutrition.
- Taxon
- cornZea mays subsp. mayse0
- Outcome
- corn may respond to enhanced levels of Cl nutritione0
- Qualifier
- high‐yield environmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when produced in high‐yield environments, corn may respond to enhanced levels of Cl nutrition”
The same questions in other papers
chloride · yield · Zea mays (maize)Results differ
1 paper in the same direction as this paper · 7 in the opposite direction
- positive
- positive
- positive
5 papers more in this group
See all 9 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.