Abstract
The objective of this work was to evaluate the efficiency of superficial application of limestone and slag, and their effects on soil chemical attributes and on yield and mineral nutrition of soybean, maize, and Congo signal grass (Urochloa ruziziensis). The experiment was carried out in a Rhodic Hapludox under no tillage system. The treatments consisted of the use of limestone or slag (silicates of calcium and magnesium) to correct soil acidity, and of a control treatment without the use of soil correctives. Rates were calculated in order to raise soil base saturation up to 70%. Soybean was sown in November 2006 and maize in December 2007. Congo signal grass was sown right after the harvests of soybean and maize, and it was cropped during the off-seasons. Soil chemical attributes were evaluated at 6, 12, and 18 months after the application of the corrective materials. Slag is an efficient source for soil acidity correction, being able to raise the exchangeable base levels in the soil profile faster than lime. Both limestone and slag increase dry matter yield of Congo signal grass, and grain yield of soybean and maize. Slag is more effective in improving maize grain yield.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. 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 8
Claim · model-written summary
Slag raises exchangeable base levels in the soil profile faster than lime when correcting soil acidity.
- Treatment
- slage1
- Outcome
- exchangeable base levels in the soil profilee1
- Direction
- raisee1
- Comparator
- limee1
Not reportedTaxon
Verbatim
e1“Slag is an efficient source for soil acidity correction, being able to raise the exchangeable base levels in the soil profile faster than lime”
Claim · model-written summary
Limestone increases dry matter yield of Congo signal grass compared with no soil corrective.
Verbatim
e2“Both limestone and slag increase dry matter yield of Congo signal grass, and grain yield of soybean and maize”
e3“a control treatment without the use of soil correctives”
Claim · model-written summary
Slag increases dry matter yield of Congo signal grass compared with no soil corrective.
Verbatim
e2“Both limestone and slag increase dry matter yield of Congo signal grass, and grain yield of soybean and maize”
e3“a control treatment without the use of soil correctives”
Claim · model-written summary
Limestone increases soybean grain yield compared with no soil corrective.
- Taxon
- soybean
Glycine maxe2 - Treatment
- limestonee2
- Outcome
- grain yielde2
- Direction
- increasee2
- Comparator
- control treatment without the use of soil correctivese3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Both limestone and slag increase dry matter yield of Congo signal grass, and grain yield of soybean and maize”
e3“a control treatment without the use of soil correctives”
Claim · model-written summary
Slag increases soybean grain yield compared with no soil corrective.
- Taxon
- soybeanGlycine maxe2
- Treatment
- slage2
- Outcome
- grain yielde2
- Direction
- increasee2
- Comparator
- control treatment without the use of soil correctivese3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Both limestone and slag increase dry matter yield of Congo signal grass, and grain yield of soybean and maize”
e3“a control treatment without the use of soil correctives”
Claim · model-written summary
Limestone increases maize grain yield compared with no soil corrective.
- Treatment
- limestonee2
- Outcome
- grain yielde2
- Direction
- increasee2
- Comparator
- control treatment without the use of soil correctivese3
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Both limestone and slag increase dry matter yield of Congo signal grass, and grain yield of soybean and maize”
e3“a control treatment without the use of soil correctives”
Claim · model-written summary
Slag increases maize grain yield compared with no soil corrective.
- Treatment
- slage2
- Outcome
- grain yielde2
- Direction
- increasee2
- Comparator
- control treatment without the use of soil correctivese3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Both limestone and slag increase dry matter yield of Congo signal grass, and grain yield of soybean and maize”
e3“a control treatment without the use of soil correctives”
Claim · model-written summary
Slag is more effective than limestone in improving maize grain yield.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Slag is more effective in improving maize grain yield”
The same questions in other papers
calcium oxide · yield · Zea mays (maize)Results differ
12 papers in the same direction as this paper · 7 in the opposite direction
- no effect
- negative
- no effect
16 papers more in this group
See all 20 papers →calcium oxide · yield · Glycine max (soybean)Positive and negative results
7 papers in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
- 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.