Abstract
Abstract Studies were conducted both in the laboratory and in the field to determine the relative availability of calcium from several calcium sulfate materials, and their effect on the yield and grade of peanuts. The initial rate of Ca leaching in the laboratory study was greatest for Phosphogypsum, medium for the regular finely-ground anhydrite landplaster and least for the granular anhydrite landplaster. With continued leaching the Ca level extracted after applying the three sources became similar. Some differences were noted in the rate of leaching that were associated with soil properties, primarily cation exchange capacity. In the field, the materials were applied early in the season and at flowering. No consistent difference existed among the sources in soil test Ca or SO4-S levels during the growing period. These levels were lower, however, late in the season if the materials had been applied early rather than at flowering. Similar conclusions were reached when evaluating the temporary pH drop caused by applying the Ca sources. Yield and grade of peanuts were affected by applying the Ca sources in one field study. The positive response was similar from the three materials which, in this particular study, were applied only at flowering.
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Claims 9
Claim · model-written summary
Phosphogypsum had the greatest initial Ca leaching rate in the laboratory study.
- Taxon
- Arachis hypogaea
Arachis hypogaeat0 - Treatment
- Phosphogypsume0
- Outcome
- initial rate of Ca leachinge0
- Direction
- greateste0
- Comparator
- the granular anhydrite landplastere0
- Setting
- laboratory studye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Peanuts (Arachis hypogaea L.)”
e0“The initial rate of Ca leaching in the laboratory study was greatest for Phosphogypsum, medium for the regular finely-ground anhydrite landplaster and least for the granular anhydrite landplaster”
Claim · model-written summary
The regular finely-ground anhydrite landplaster had a medium initial Ca leaching rate in the laboratory study.
- Taxon
- Arachis hypogaeaArachis hypogaeat0
- Treatment
- regular finely-ground anhydrite landplastere0
- Outcome
- initial rate of Ca leachinge0
- Direction
- mediume0
- Comparator
- Phosphogypsume0
- Setting
- laboratory studye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Peanuts (Arachis hypogaea L.)”
e0“The initial rate of Ca leaching in the laboratory study was greatest for Phosphogypsum, medium for the regular finely-ground anhydrite landplaster and least for the granular anhydrite landplaster”
Claim · model-written summary
The granular anhydrite landplaster had the least initial Ca leaching rate in the laboratory study.
- Taxon
- Arachis hypogaeaArachis hypogaeat0
- Treatment
- granular anhydrite landplastere0
- Outcome
- initial rate of Ca leachinge0
- Direction
- leaste0
- Comparator
- Phosphogypsume0
- Setting
- laboratory studye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Peanuts (Arachis hypogaea L.)”
e0“The initial rate of Ca leaching in the laboratory study was greatest for Phosphogypsum, medium for the regular finely-ground anhydrite landplaster and least for the granular anhydrite landplaster”
Claim · model-written summary
With continued leaching, the Ca levels extracted after applying the three Ca sources became similar.
- Taxon
- Arachis hypogaeaArachis hypogaeat0
- Treatment
- three sourcese1
- Outcome
- Ca level extractede1
- Direction
- no_changeinferrede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Peanuts (Arachis hypogaea L.)”
e1“With continued leaching the Ca level extracted after applying the three sources became similar”
Claim · model-written summary
Differences in the rate of Ca leaching were associated with soil properties, primarily cation exchange capacity.
- Taxon
- Arachis hypogaeaArachis hypogaeat0
- Treatment
- cation exchange capacitye2
- Outcome
- rate of leachinge2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Peanuts (Arachis hypogaea L.)”
e2“Some differences were noted in the rate of leaching that were associated with soil properties, primarily cation exchange capacity”
Claim · model-written summary
Similar conclusions were reached for the temporary pH drop caused by applying the Ca sources.
- Taxon
- Arachis hypogaeaArachis hypogaeat0
- Treatment
- Ca sourcese3
- Outcome
- temporary pH drope3
- Direction
- no_changeinferrede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Peanuts (Arachis hypogaea L.)”
e3“Similar conclusions were reached when evaluating the temporary pH drop caused by applying the Ca sources”
Claim · model-written summary
Applying the Ca sources increased peanut yield and grade in one field study, with a positive response similar across the three materials.
- Taxon
- Arachis hypogaeaArachis hypogaeat0
- Treatment
- Ca sourcese4
- Outcome
- Yield and grade of peanutse4
- Direction
- increaseinferrede4
- Qualifier
- The positive response was similar from the three materialse5
- Setting
- one field studye4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Peanuts (Arachis hypogaea L.)”
e4“Yield and grade of peanuts were affected by applying the Ca sources in one field study”
e5“The positive response was similar from the three materials which, in this particular study, were applied only at flowering”
Claim · model-written summary
No consistent difference existed among the Ca sources in soil test Ca or SO4-S levels during the growing period.
- Taxon
- Arachis hypogaeaArachis hypogaeat0
- Treatment
- sourcese6
- Outcome
- soil test Ca or SO4-S levelse6
- Direction
- no_changeinferrede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Peanuts (Arachis hypogaea L.)”
e6“No consistent difference existed among the sources in soil test Ca or SO4-S levels during the growing period”
Claim · model-written summary
Soil test Ca or SO4-S levels were lower late in the season when the materials were applied early rather than at flowering.
- Taxon
- Arachis hypogaeaArachis hypogaeat0
- Treatment
- applied earlye7
- Outcome
- soil test Ca or SO4-S levelse6
- Direction
- lowere7
- Comparator
- at floweringe7
- Setting
- late in the seasone7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Peanuts (Arachis hypogaea L.)”
e6“No consistent difference existed among the sources in soil test Ca or SO4-S levels during the growing period”
e7“These levels were lower, however, late in the season if the materials had been applied early rather than at flowering”
The same questions in other papers
calcium atom · yield · Arachis hypogaea (peanut)Results differ
67 papers in the same direction as this paper · 6 in the opposite direction
- no effect
- negative
- negative
70 papers more in this group
See all 74 papers →calcium atom · soil: chemistry · Arachis hypogaea (peanut)Positive and negative results
2 in the opposite direction
- positive
- positive
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.