Abstract
Abstract Subsoil acidity in northeast United States has been associated with decreased yield and decreased water and fertilizer nitrogen (N) utilization by forages. Surface applications of gypsiferious products has been shown to reduce subsoil acidity largely caused by high levels of soluble aluminum (Al). Our objective was to test the effectiveness and safety of using FGD gypsum to increase dry matter (DM) yields of alfalfa (Medicago sativa L.). Four and one‐half, 9, and 18 mt/ha of either commercially available agricultural gypsum or two gypsum by‐products were applied to a Rayne soil (Fine‐loamy, mixed, mesic Typic Hapludult) with a strongly acid subsoil. Agricultural and FGD gypsum increased alfalfa DM yields by as much as 21 and 14%, respectively. Correspondingly, in the subsoil, soluble Al decreased and calcium (Ca) content and Ca:Al ratio increased. Heavy metal concentrations in either the alfalfa or soils were not increased by any treatment. However, S in the alfalfa grown at the highest treatments approached concentrations that are considered to be toxic to grazing animals.
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Claims 7
Claim · model-written summary
Agricultural gypsum increased alfalfa dry matter yield by up to 21%.
- Taxon
- alfalfa
Medicago sativae0 - Treatment
- Agriculturale0
- Outcome
- alfalfa DM yieldse0
- Direction
- increasede0
- Value
- 21e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Agricultural and FGD gypsum increased alfalfa DM yields by as much as 21 and 14%, respectively”
Claim · model-written summary
FGD gypsum increased alfalfa dry matter yield by up to 14%.
- Taxon
- alfalfaMedicago sativae0
- Treatment
- FGD gypsume0
- Outcome
- alfalfa DM yieldse0
- Direction
- increasede0
- Value
- 14%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Agricultural and FGD gypsum increased alfalfa DM yields by as much as 21 and 14%, respectively”
Claim · model-written summary
Gypsum application was associated with decreased subsoil soluble Al.
- Taxon
- alfalfaMedicago sativat0
- Outcome
- soluble Ale0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“alfalfa”
e0“Correspondingly, in the subsoil, soluble Al decreased and calcium (Ca) content and Ca:Al ratio increased”
Claim · model-written summary
Gypsum application was associated with increased subsoil calcium (Ca) content.
- Taxon
- alfalfaMedicago sativat0
- Outcome
- calcium (Ca) contente0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“alfalfa”
e0“Correspondingly, in the subsoil, soluble Al decreased and calcium (Ca) content and Ca:Al ratio increased”
Claim · model-written summary
Gypsum application was associated with increased subsoil Ca:Al ratio.
- Taxon
- alfalfaMedicago sativat0
- Outcome
- Ca:Al ratioe0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“alfalfa”
e0“Correspondingly, in the subsoil, soluble Al decreased and calcium (Ca) content and Ca:Al ratio increased”
Claim · model-written summary
Treatments did not increase heavy metal concentrations in alfalfa or soil.
- Taxon
- alfalfaMedicago sativae0
- Treatment
- any treatmente0
- Outcome
- Heavy metal concentrationse0
- Direction
- not increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Heavy metal concentrations in either the alfalfa or soils were not increased by any treatment”
Claim · model-written summary
Sulfur in alfalfa at the highest treatments approached potentially toxic concentrations for grazing animals.
- Taxon
- alfalfaMedicago sativae0
- Treatment
- highest treatmentse0
- Outcome
- S in the alfalfae0
- Qualifier
- concentrations that are considered to be toxic to grazing animalse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“S in the alfalfa grown at the highest treatments approached concentrations that are considered to be toxic to grazing animals”
The same questions in other papers
lime · growth · Medicago sativa (alfalfa)Positive and negative results
18 papers in the same direction as this paper · 6 in the opposite direction
- no effect
- negative
- no effect
21 papers more in this group
See all 25 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.