Abstract
A pot trial with two continuous crops of rape was conducted to study the effects of sulfur on the chemical properties of calcareous soil. The results indicated that sulfur could decrease soil pH, while increase the electrical conductivity of soil solution markedly. Applying sulfur could enhance the contents of soil exchangeable Na+ and K+ and the accumulation of soil water-soluble anions, but had less effect on soil exchangeable Ca2+ and Mg2+, CEC, and alkalization degree. Comparing with urea, sulfur-coated urea (SCU) had less effect on soil pH and electrical conductivity, but markedly affected soil exchangeable cations and water-soluble anions. Sulfur application had no obvious yield-increasing effect, and higher application rate of sulfur could decrease the rape yield significantly.
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Claims 9
Claim · model-written summary
Sulfur decreased soil pH.
- Taxon
- rape
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napust0 - Treatment
- sulfure0
- Outcome
- soil pHe0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
e0“The results indicated that sulfur could decrease soil pH, while increase the electrical conductivity of soil solution markedly.”
t0“rape yield significantly”
Claim · model-written summary
Sulfur markedly increased soil-solution electrical conductivity.
- Taxon
- rapeBrassica napust0
- Treatment
- sulfure0
- Outcome
- electrical conductivity of soil solutione0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results indicated that sulfur could decrease soil pH, while increase the electrical conductivity of soil solution markedly.”
t0“rape yield significantly”
Claim · model-written summary
Sulfur enhanced soil exchangeable Na+ and K+ contents.
- Taxon
- rapeBrassica napust0
- Treatment
- sulfure0
- Outcome
- soil exchangeable Na+ and K+e0
- Direction
- enhancee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Applying sulfur could enhance the contents of soil exchangeable Na+ and K+ and the accumulation of soil water-soluble anions, but had less effect on soil exchangeable Ca2+ and Mg2+, CEC, and alkalization degree.”
t0“rape yield significantly”
Claim · model-written summary
Sulfur enhanced accumulation of soil water-soluble anions.
- Taxon
- rapeBrassica napust0
- Treatment
- sulfure0
- Outcome
- soil water-soluble anionse0
- Direction
- enhancee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Applying sulfur could enhance the contents of soil exchangeable Na+ and K+ and the accumulation of soil water-soluble anions, but had less effect on soil exchangeable Ca2+ and Mg2+, CEC, and alkalization degree.”
t0“rape yield significantly”
Claim · model-written summary
Sulfur had less effect on soil exchangeable Ca2+ and Mg2+, CEC, and alkalization degree.
- Taxon
- rapeBrassica napust0
- Treatment
- sulfure0
- Outcome
- soil exchangeable Ca2+ and Mg2+, CEC, and alkalization degreee0
- Direction
- less effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Applying sulfur could enhance the contents of soil exchangeable Na+ and K+ and the accumulation of soil water-soluble anions, but had less effect on soil exchangeable Ca2+ and Mg2+, CEC, and alkalization degree.”
t0“rape yield significantly”
Claim · model-written summary
Sulfur-coated urea affected soil pH and electrical conductivity less than urea.
- Taxon
- rapeBrassica napust0
- Treatment
- sulfur-coated urea (SCU)e0
- Outcome
- soil pH and electrical conductivitye0
- Direction
- less effecte0
- Comparator
- ureae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Comparing with urea, sulfur-coated urea (SCU) had less effect on soil pH and electrical conductivity, but markedly affected soil exchangeable cations and water-soluble anions.”
t0“rape yield significantly”
Claim · model-written summary
Sulfur-coated urea markedly affected soil exchangeable cations and water-soluble anions relative to urea.
- Taxon
- rapeBrassica napust0
- Treatment
- sulfur-coated urea (SCU)e0
- Outcome
- soil exchangeable cations and water-soluble anionse0
- Comparator
- ureae0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Comparing with urea, sulfur-coated urea (SCU) had less effect on soil pH and electrical conductivity, but markedly affected soil exchangeable cations and water-soluble anions.”
t0“rape yield significantly”
Claim · model-written summary
Sulfur application had no obvious yield increase.
- Taxon
- rapeBrassica napust0
- Treatment
- Sulfur applicatione0
- Outcome
- yielde0
- Direction
- no obvious yield-increasing effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sulfur application had no obvious yield-increasing effect, and higher application rate of sulfur could decrease the rape yield significantly.”
t0“rape yield significantly”
Claim · model-written summary
A higher sulfur application rate significantly decreased rape yield.
- Taxon
- rapeBrassica napuse0
- Treatment
- higher application rate of sulfure0
- Outcome
- rape yielde0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sulfur application had no obvious yield-increasing effect, and higher application rate of sulfur could decrease the rape yield significantly.”
The same questions in other papers
sulfur atom · yield · Brassica napus (oilseed rape)Results differ
9 papers in the same direction as this paper · 49 in the opposite direction
- positive
- positive
- positive
55 papers more in this group
See all 59 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.