Abstract
Greenhouse and field experiments were conducted at the High Plains Grasslands Research Station to determine what might cause tetany-prone forage. The soil was analyzed for ammonium acetate-extractable cations, cation exchange capacity, and alkaline earth carbonates; and the successive harvests of forage plants were analyzed for magnesium (Mg), calcium (Ca), potassium (K), and nitrogen (N). Forages used in the study included legumes: 'Lutana' Cicer milkvetch (Astragalus cicer L.), 'Remont' sainfoin (Onobrychis viciafolia Scop.), 'Dawson', 'Vernal', 'Team', and 'Fremont' alfalfas (Medicago sativa L.); and grasses: 'Latar' orchardgrass (Dactylis glomerata L.), 'Fawn' tall fescue (Festuca arundinacea Schreb), 'Regar' bromegrass Bromus biebersteinii Roem & Schult.), 'Manchar' smooth bromegrass (Bromus inermis Leyss), 'Garrison' creeping foxtail (Alopercurus pratensis L.), 'Luna' pubescent wheatgrass [Agropyron trichophorum (Link) Richt.], and 'Greenar' intermediate wheatgrass [Agropyron intermedium (Host) Beauv.]. Forage Mg level increased when average soil temperature increased from 16.6 to 22.7 degrees C. Fertilization with 1,134 kg of Mg as MgSO4/ha did not increase forage Mg level. Later orchardgrass and Fawn tall fescue consistently produced forage containing more than 0.20% Mg, whereas wheatgrass species produced forage with Mg levels as low as 0.11%. All legumes had Ca levels ranging from 1.0 to 2.5%. One field crop of Later orchardgrass produced forage with a high K accumulation (K/Ca + Mg ratio of 2.7). Predication of blood-serum Mg from forage nutrient content indicated values from 17 to 31 mg/l in lactating cows.
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Claims 8
Claim · model-written summary
Forage magnesium rose as average soil temperature increased from 16.6 to 22.7 degrees C.
Verbatim
e0“Forage Mg level increased when average soil temperature increased from 16.6 to 22.7 degrees C”
Claim · model-written summary
Magnesium sulfate fertilization did not increase forage magnesium.
- Taxon
- foragee0
- Treatment
- Fertilization with 1,134 kg of Mg as MgSO4/hae0
- Outcome
- forage Mg levele0
- Direction
- did not increasee0
Not reportedComparator
Verbatim
e0“Fertilization with 1,134 kg of Mg as MgSO4/ha did not increase forage Mg level”
Claim · model-written summary
Orchardgrass forage consistently contained more than 0.20% Mg.
- Taxon
- orchardgrass
.jpg?width=60)
Dactylis glomeratae0 - Outcome
- forage containing more than 0.20% Mge0
- Direction
- more thane0
- Value
- 0.20% Mge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Later orchardgrass and Fawn tall fescue consistently produced forage containing more than 0.20% Mg”
Claim · model-written summary
Fawn tall fescue forage consistently contained more than 0.20% Mg.
Verbatim
e0“Later orchardgrass and Fawn tall fescue consistently produced forage containing more than 0.20% Mg”
Claim · model-written summary
Wheatgrass forage magnesium was as low as 0.11%.
Verbatim
e0“wheatgrass species produced forage with Mg levels as low as 0.11%”
Claim · model-written summary
Legume forage calcium ranged from 1.0 to 2.5%.
Verbatim
e0“All legumes had Ca levels ranging from 1.0 to 2.5%”
Claim · model-written summary
One orchardgrass field crop had high potassium accumulation with a K/Ca + Mg ratio of 2.7.
- Taxon
- orchardgrassDactylis glomeratae0
- Outcome
- K accumulatione0
- Direction
- highe0
- Value
- 2.7e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“One field crop of Later orchardgrass produced forage with a high K accumulation (K/Ca + Mg ratio of 2.7)”
Claim · model-written summary
Predicted blood-serum magnesium in lactating cows ranged from 17 to 31 mg/l based on forage nutrient content.
Verbatim
e0“Predication of blood-serum Mg from forage nutrient content indicated values from 17 to 31 mg/l in lactating cows”
e1“forage plants”
The same questions in other papers
fertilization · nutrient: content · Dactylis glomerata (cocksfoot)Positive and negative results
1 paper in the same direction as this paper · 10 in the opposite direction
- positive
- positive
- positive
8 papers more in this group
See all 12 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.