Abstract
Upland rice is an important crop in the cropping systems of South America, including Brazil. Two greenhouse experiments were conducted to determine influence of lime and gypsum on yield and yield components of upland rice and changes in the chemical properties of an Oxisol. The lime rates used were 0, 0.71, 1.42, 2.14, 2.85, and 4.28 g kg−1 soil. The gypsum rates were 0, 0.28, 0.57, 1.14, 1.71, and 2.28 g kg−1. Lime as well as gypsum significantly increased plant height, straw and grain yield, and panicle density in a quadratic fashion. Adequate lime and gypsum rates for maximum grain yield were 1.11 g kg−1 and 1.13 g kg−1, respectively. Plant height, straw yield, and panicle density were positively related to grain yield. Lime as well as gypsum application significantly changed extractable calcium (Ca), magnesium (Mg), hydrogen (H)+aluminum (Al), base saturation, and effective cation exchange capacity. In addition, liming also significantly increased pH, extractable phosphorus (P) and potassium (K), calcium saturation, magnesium saturation, and potassium saturation. Optimum acidity indices for the grain yield of upland rice were pH 6.0, Ca 1.7 cmolc kg−1, base saturation 60%, and calcium saturation 47%. In addition, upland rice can tolerate 42% of acidity saturation.
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Claims 18
Claim · model-written summary
Lime significantly increased plant height, straw and grain yield of upland rice in a quadratic fashion.
- Taxon
- Upland Rice
Oryza sativat0 - Treatment
- Limee0
- Outcome
- plant height, straw and grain yielde0
- Direction
- increasede0
- Qualifier
- in a quadratic fashione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Upland Rice”
e0“Lime as well as gypsum significantly increased plant height, straw and grain yield, and panicle density in a quadratic fashion”
Claim · model-written summary
Gypsum significantly increased plant height, straw and grain yield of upland rice in a quadratic fashion.
- Taxon
- Upland RiceOryza sativat0
- Treatment
- gypsume0
- Outcome
- plant height, straw and grain yielde0
- Direction
- increasede0
- Qualifier
- in a quadratic fashione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Upland Rice”
e0“Lime as well as gypsum significantly increased plant height, straw and grain yield, and panicle density in a quadratic fashion”
Claim · model-written summary
Lime significantly increased panicle density of upland rice in a quadratic fashion.
- Taxon
- Upland RiceOryza sativat0
- Treatment
- Limee0
- Outcome
- panicle densitye0
- Direction
- increasede0
- Qualifier
- in a quadratic fashione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Upland Rice”
e0“Lime as well as gypsum significantly increased plant height, straw and grain yield, and panicle density in a quadratic fashion”
Claim · model-written summary
Gypsum significantly increased panicle density of upland rice in a quadratic fashion.
- Taxon
- Upland RiceOryza sativat0
- Treatment
- gypsume0
- Outcome
- panicle densitye0
- Direction
- increasede0
- Qualifier
- in a quadratic fashione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Upland Rice”
e0“Lime as well as gypsum significantly increased plant height, straw and grain yield, and panicle density in a quadratic fashion”
Claim · model-written summary
The adequate lime rate for maximum grain yield of upland rice was 1.11 g per kg soil.
- Taxon
- Upland RiceOryza sativat0
- Treatment
- limee0
- Outcome
- maximum grain yielde0
- Value
- 1.11 g kg−1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Upland Rice”
e0“Adequate lime and gypsum rates for maximum grain yield were 1.11 g kg−1 and 1.13 g kg−1, respectively”
Claim · model-written summary
The adequate gypsum rate for maximum grain yield of upland rice was 1.13 g per kg soil.
- Taxon
- Upland RiceOryza sativat0
- Treatment
- gypsume0
- Outcome
- maximum grain yielde0
- Value
- 1.13 g kg−1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Upland Rice”
e0“Adequate lime and gypsum rates for maximum grain yield were 1.11 g kg−1 and 1.13 g kg−1, respectively”
Claim · model-written summary
Plant height, straw yield and panicle density were positively related to grain yield in upland rice.
- Taxon
- Upland RiceOryza sativat0
- Outcome
- grain yielde0
- Direction
- positively relatede0
- Comparator
- Plant height, straw yield, and panicle densitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Upland Rice”
e0“Plant height, straw yield, and panicle density were positively related to grain yield”
Claim · model-written summary
Lime application significantly changed extractable calcium, magnesium and hydrogen+aluminum in the Oxisol.
Not reportedTaxonComparatorSettingDirection
Verbatim
e0“Lime as well as gypsum application significantly changed extractable calcium (Ca), magnesium (Mg), hydrogen (H)+aluminum (Al), base saturation, and effective cation exchange capacity”
Claim · model-written summary
Gypsum application significantly changed extractable calcium, magnesium and hydrogen+aluminum in the Oxisol.
Not reportedTaxonComparatorSettingDirection
Verbatim
e0“Lime as well as gypsum application significantly changed extractable calcium (Ca), magnesium (Mg), hydrogen (H)+aluminum (Al), base saturation, and effective cation exchange capacity”
Claim · model-written summary
Lime application significantly changed base saturation and effective cation exchange capacity in the Oxisol.
Not reportedTaxonComparatorSettingDirection
Verbatim
e0“Lime as well as gypsum application significantly changed extractable calcium (Ca), magnesium (Mg), hydrogen (H)+aluminum (Al), base saturation, and effective cation exchange capacity”
Claim · model-written summary
Gypsum application significantly changed base saturation and effective cation exchange capacity in the Oxisol.
Not reportedTaxonComparatorSettingDirection
Verbatim
e0“Lime as well as gypsum application significantly changed extractable calcium (Ca), magnesium (Mg), hydrogen (H)+aluminum (Al), base saturation, and effective cation exchange capacity”
Claim · model-written summary
Liming significantly increased soil pH and extractable phosphorus and potassium.
Not reportedTaxonComparator
Verbatim
e0“In addition, liming also significantly increased pH, extractable phosphorus (P) and potassium (K), calcium saturation, magnesium saturation, and potassium saturation”
Claim · model-written summary
Liming significantly increased calcium, magnesium and potassium saturation.
- Treatment
- liminge0
- Outcome
- calcium saturation, magnesium saturation, and potassium saturatione0
- Direction
- increasede0
Not reportedTaxonComparator
Verbatim
e0“In addition, liming also significantly increased pH, extractable phosphorus (P) and potassium (K), calcium saturation, magnesium saturation, and potassium saturation”
Claim · model-written summary
The optimum acidity index for the grain yield of upland rice was a soil pH of 6.0.
- Taxon
- upland riceOryza sativae0
- Outcome
- Optimum acidity indices for the grain yielde0
- Value
- pH 6.0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Optimum acidity indices for the grain yield of upland rice were pH 6.0, Ca 1.7 cmolc kg−1, base saturation 60%, and calcium saturation 47%”
Claim · model-written summary
The optimum acidity index for the grain yield of upland rice was a extractable calcium of 1.7 cmolc per kg.
- Taxon
- upland riceOryza sativae0
- Outcome
- Optimum acidity indices for the grain yielde0
- Value
- Ca 1.7 cmolc kg−1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Optimum acidity indices for the grain yield of upland rice were pH 6.0, Ca 1.7 cmolc kg−1, base saturation 60%, and calcium saturation 47%”
Claim · model-written summary
The optimum acidity index for the grain yield of upland rice was a base saturation of 60%.
- Taxon
- upland riceOryza sativae0
- Outcome
- Optimum acidity indices for the grain yielde0
- Value
- base saturation 60%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Optimum acidity indices for the grain yield of upland rice were pH 6.0, Ca 1.7 cmolc kg−1, base saturation 60%, and calcium saturation 47%”
Claim · model-written summary
The optimum acidity index for the grain yield of upland rice was a calcium saturation of 47%.
- Taxon
- upland riceOryza sativae0
- Outcome
- Optimum acidity indices for the grain yielde0
- Value
- calcium saturation 47%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Optimum acidity indices for the grain yield of upland rice were pH 6.0, Ca 1.7 cmolc kg−1, base saturation 60%, and calcium saturation 47%”
Claim · model-written summary
Upland rice can tolerate 42% acidity saturation.
- Taxon
- upland riceOryza sativae0
- Outcome
- tolerate 42% of acidity saturatione0
- Value
- 42%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“upland rice can tolerate 42% of acidity saturation”
The same questions in other papers
lime · yield · Oryza sativa (rice)Results differ
122 papers in the same direction as this paper · 10 in the opposite direction · 3 reporting no difference from an alternative
- positive
- negative
- no effect
132 papers more in this group
See all 136 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.