Abstract
Claypan soils of the eastern Great Plains are often infertile, requiring producers of grain sorghum [ Sorghum bicolor (L.)] to be attentive to soil fertility issues for optimum production. The objectives of this study were to determine the effects of K, Cl, and N fertilization and legume residual on grain sorghum production and stalk rot. On average, sorghum was unaffected by differences in legume residual, but yield was increased by 11% and stalk rot severity was reduced by 20% when fertilized with 75 lb K 2 O/acre. Plant responses to N fertilization were generally greatest when sorghum was also fertilized with Cl, especially in a stressful year evidenced by plant lodging. Nitrogen fertilization without Cl in 1995 resulted in more than 20% lodging, with about 80% of the bottom 10 nodes showing evidence of stalk rot, but the combination of N and Cl fertilization increased yield by about 20% and reduced stalk rot severity by 25%. Potassium is important in improving yield and reducing disease potential, but especially in a stressful year, Cl obtained with common KCl fertilization may complement N fertilization to optimize yields and suppress disease and lodging.
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 9
Claim · model-written summary
Legume residual differences did not affect sorghum on average.
SorghumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On average, sorghum was unaffected by differences in legume residual”
Claim · model-written summary
Potassium fertilization increased yield by 11%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“yield was increased by 11% and stalk rot severity was reduced by 20% when fertilized with 75 lb K 2 O/acre.”
t0“Sorghum”
Claim · model-written summary
Potassium fertilization reduced stalk rot severity by 20%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“yield was increased by 11% and stalk rot severity was reduced by 20% when fertilized with 75 lb K 2 O/acre.”
t0“Sorghum”
Claim · model-written summary
Sorghum responses to nitrogen were greatest with chloride, especially in a stressful year.
- Treatment
- N fertilizatione0
- Outcome
- Plant responsese0
- Direction
- greateste0
- Qualifier
- especially in a stressful yeare0
- Comparator
- fertilized with Cle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plant responses to N fertilization were generally greatest when sorghum was also fertilized with Cl, especially in a stressful year evidenced by plant lodging.”
Claim · model-written summary
Nitrogen without chloride in 1995 caused more than 20% lodging.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen fertilization without Cl in 1995 resulted in more than 20% lodging”
t0“Sorghum”
Claim · model-written summary
Nitrogen without chloride in 1995 left about 80% of the bottom 10 nodes with stalk rot evidence.
- Treatment
- Nitrogen fertilization without Cle0
- Outcome
- bottom 10 nodes showing evidence of stalk rote0
- Value
- about 80%e0
- Qualifier
- 1995e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen fertilization without Cl in 1995 resulted in more than 20% lodging, with about 80% of the bottom 10 nodes showing evidence of stalk rot”
t0“Sorghum”
Claim · model-written summary
Combined nitrogen and chloride increased yield by about 20%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the combination of N and Cl fertilization increased yield by about 20% and reduced stalk rot severity by 25%.”
t0“Sorghum”
Claim · model-written summary
Combined nitrogen and chloride reduced stalk rot severity by 25%.
- Treatment
- combination of N and Cl fertilizatione0
- Outcome
- stalk rot severitye0
- Direction
- reducede0
- Value
- 25%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the combination of N and Cl fertilization increased yield by about 20% and reduced stalk rot severity by 25%.”
t0“Sorghum”
Claim · model-written summary
The authors recommend potassium and chloride with nitrogen to improve yield and suppress disease and lodging.
- Outcome
- optimize yields and suppress disease and lodginge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Potassium is important in improving yield and reducing disease potential, but especially in a stressful year, Cl obtained with common KCl fertilization may complement N fertilization to optimize yields and suppress disease and lodging.”
t0“Sorghum”
The same questions in other papers
fertilization · growth · SorghumResults differ
15 papers in the same direction as this paper · 104 in the opposite direction
- negative
- positive
- positive
116 papers more in this group
See all 120 papers →fertilization · disease · SorghumPositive and negative results
7 papers in the same direction as this paper · 4 in the opposite direction
- negative
- negative
- negative
8 papers more in this group
See all 12 papers →fertilization · yield · SorghumPositive and negative results
417 papers in the same direction as this paper · 21 in the opposite direction · 7 reporting no difference from an alternative
- positive
- no effect
- no effect
442 papers more in this group
See all 446 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.