Abstract
Abstract Leaf serration in forage corn ( Zea mays L.) is often observed under field conditions. In this study, field cultivation experiments were conducted over 3 years to determine the factors affecting the appearance and development of this trait and to assess its potential impact on corn productivity. We also evaluated soil mineral conditions using leaf serration as an indicator. The number of symptomatic leaves per plant decreased after spraying with calcium chloride solution (3 g/L), and the development of leaf serration was also suppressed. Therefore, leaf serration in corn grown under field conditions may be a symptom of calcium deficiency. Occurrence of leaf serration did not significantly affect the dry matter yield of corn shoots at the yellow‐ripe stage, which is considered optimal for ensiling. This was because the yield, which included the leaves, stems, and ears, was not affected by calcium spraying. The number of leaves with symptoms increased logarithmically with an increase in soil exchangeable potassium content, owing to the decrease in calcium concentration in the corn plant caused by excessive amounts of soil potassium. The appearance of symptoms differed significantly among corn varieties, and the highest number of symptomatic leaves occurred in the variety with the highest calcium concentration. Different regression equations were obtained from the relationships between soil exchangeable potassium content and the number of symptomatic leaves in varieties with low and high calcium concentrations. The soil exchangeable potassium content was estimated using these equations, with the number of symptomatic corn leaves after silking as an indicator. With two or more symptomatic leaves per plant, the soil exchangeable potassium content was adequate for forage corn production. We suggest that a reduction in potassium input should be implemented in fertilization management if corn plants develop leaf serration.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 12
Claim · model-written summary
Calcium chloride spraying reduced the number of symptomatic leaves per corn plant.
- Treatment
- spraying with calcium chloride solution (3 g/L)e0
- Outcome
- number of symptomatic leaves per plante0
- Direction
- decreasede0
Not reportedTaxonComparator
Verbatim
e0“The number of symptomatic leaves per plant decreased after spraying with calcium chloride solution (3 g/L)”
Claim · model-written summary
Calcium chloride spraying suppressed development of leaf serration.
Not reportedTaxonTreatmentComparator
Verbatim
e0“and the development of leaf serration was also suppressed”
Claim · model-written summary
Leaf serration did not significantly affect corn shoot dry matter yield at the yellow-ripe stage.
- Taxon
- corn
Zea mays subsp. mayse0 - Organ / stage
- shoots at the yellow‐ripe stagee0
- Outcome
- dry matter yielde0
- Direction
- did not significantly affecte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Occurrence of leaf serration did not significantly affect the dry matter yield of corn shoots at the yellow‐ripe stage”
Claim · model-written summary
Calcium spraying did not affect corn yield.
Not reportedTaxonComparator
Verbatim
e0“the yield, which included the leaves, stems, and ears, was not affected by calcium spraying”
Claim · model-written summary
Symptomatic leaf number increased logarithmically with soil exchangeable potassium content.
Not reportedTaxon
Verbatim
e0“The number of leaves with symptoms increased logarithmically with an increase in soil exchangeable potassium content”
Claim · model-written summary
Excessive soil potassium lowered corn plant calcium concentration.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- excessive amounts of soil potassiume0
- Outcome
- calcium concentratione0
- Direction
- decreasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decrease in calcium concentration in the corn plant caused by excessive amounts of soil potassium”
Claim · model-written summary
Corn varieties differed significantly in symptom appearance.
- Taxon
- cornZea mays subsp. mayse0
- Material
- corn varietiese0
- Outcome
- appearance of symptomse0
- Direction
- differed significantlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The appearance of symptoms differed significantly among corn varieties”
Claim · model-written summary
The variety with the highest calcium concentration had the most symptomatic leaves.
Not reportedTaxon
Verbatim
e0“the highest number of symptomatic leaves occurred in the variety with the highest calcium concentration”
Claim · model-written summary
Varieties with low and high calcium concentrations had different regression equations relating soil potassium to symptomatic leaf number.
Not reportedTaxon
Verbatim
e0“Different regression equations were obtained from the relationships between soil exchangeable potassium content and the number of symptomatic leaves in varieties with low and high calcium concentrations”
Claim · model-written summary
The equations estimated soil exchangeable potassium from symptomatic leaf number after silking.
- Taxon
- cornZea mays subsp. mayse0
- Outcome
- soil exchangeable potassium contente0
- Comparator
- number of symptomatic corn leaves after silkinge0
Not reportedValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The soil exchangeable potassium content was estimated using these equations, with the number of symptomatic corn leaves after silking as an indicator”
Claim · model-written summary
Two or more symptomatic leaves per plant indicated adequate soil exchangeable potassium for forage corn production.
Verbatim
e0“With two or more symptomatic leaves per plant, the soil exchangeable potassium content was adequate for forage corn production”
Claim · model-written summary
The authors recommend reducing potassium input when corn develops leaf serration.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- fertilization managemente0
- Outcome
- reduction in potassium inpute0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We suggest that a reduction in potassium input should be implemented in fertilization management if corn plants develop leaf serration”
The same questions in other papers
calcium atom · yield · Zea mays (maize)Results differ
4 papers in the same direction as this paper · 14 in the opposite direction
- positive
- positive
- positive
15 papers more in this group
See all 19 papers →calcium chloride dihydrate · growth · Zea mays (maize)Positive and negative results
10 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
8 papers more in this group
See all 12 papers →application · growth · Zea mays (maize)Positive and negative results
309 papers in the same direction as this paper · 25 in the opposite direction · 2 reporting no difference from an alternative
- no effect
- no effect
- no effect
333 papers more in this group
See all 337 papers →application · yield · Zea mays (maize)Positive and negative results
53 papers in the same direction as this paper · 575 in the opposite direction
- positive
- positive
- positive
625 papers more in this group
See all 629 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.