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The National Agricultural Library is one of four national libraries of the United States, with locations in Beltsville, Maryland and Washington, D.C. It houses one of the world's largest and most accessible agricultural information collections and serves as the nexus for a national network of state land-grant and U.S. Department of Agriculture field libraries. In fiscal year 2011 (Oct 2010 through Sept 2011) NAL delivered more than 100 million direct customer service transactions.

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Journal Article

Journal Article

Edible plant tissue and soil calcium:magnesium ratios: data too sparse to assess implications for human health  [2015]

Rosanoff, Andrea; Capron, Elizabeth; Barak, Phillip; Mathews, Bruce; et al.

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Unlike yield, the plant calcium (Ca):magnesium (Mg) ratio increases at higher soil Ca:Mg and decreases at lower soil Ca:Mg. Edible plant tissue Ca:Mg at various soil ratios has not been robustly studied. Such studies are appropriate because high Ca:Mg dietary ratios may be associated with increased risk of chronic diseases such as cardiovascular disease and diabetes, and human dietary Ca:Mg ratio is rising as populations integrate more processed foods into traditional diets. This review explores whether increasing the soil Ca:Mg ratio is likely to increase edible plant tissue Ca:Mg ratio, a result that could, if substantial, affect human health. A literature search gathered published articles reporting Ca and Mg values for plants grown in soils or nutrient solutions with various Ca:Mg ratios. For each study, soil or solution ratio was plotted against plant ratio, and Pearson’s r and 2-tailed P values were calculated. Findings reveal that reporting Ca and Mg content of edible plant tissues is rare in studies assessing the impact of soil Ca:Mg on crop yields, nutrient uptake or crop quality; Ca:Mg of whole plants and most shoots increases as soil Ca:Mg rises; leaf Ca:Mg of some but not all crops increases as soil Ca:Mg rises; Ca:Mg ratios of edible grain, fruit and root tissues are smaller than those of leaves or shoots of the same crop; and Ca:Mg of grain, bean and fruit tissue may not respond to changes in soil Ca:Mg as much as Ca:Mg of plants, shoots and
leaves. However, the data are too sparse for conclusions or even speculation. Further measurements of Ca and Mg in edible tissues destined for human consumption are necessary to asses any impact of soil Ca:Mg on the rising dietary Ca:Mg of humans and its health consequences.
From the journal
Crop & pasture science
ISSN : 1836-0947

Bibliographic information

Language:
English
Type:
Journal Article
In AGRIS since:
2016
Volume:
66
Issue:
12
Start Page:
1265
End Page:
1277
Publisher:
CSIRO Publishing
All titles:
"Edible plant tissue and soil calcium:magnesium ratios: data too sparse to assess implications for human health"@eng
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Bibliographic information

Language:
English
Type:
Journal Article
In AGRIS since:
2016
Volume:
66
Issue:
12
Start Page:
1265
End Page:
1277
Publisher:
CSIRO Publishing
All titles:
"Edible plant tissue and soil calcium:magnesium ratios: data too sparse to assess implications for human health"@eng