The Variation in the Mineral Content of Vegetables

Davidson, Jehiel; LeClerc, J. A.

doi:10.1093/jn/11.1.55

Cited by 17 publications

(4 citation statements)

References 9 publications

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“…In some earlier work (5,7,15,17) nitrate-N was not included with the other anions in calculating excess-base. The consequences of omitting nitrate are that nitrate, if present, is included with the organic N, and the bases with which the nitrate is associated in the plant are considered a part of the excess-base.…”

mentioning

confidence: 99%

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Excess‐Base and Excess‐Base/Nitrogen Ratio of Various Crop Species and Parts of Plants¹

Pierre¹,

Banwart²

1973

Agronomy Journal

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The primary objective of this study was to determine how various crop species differ in their cation‐anion balance and thus in their effects on soil reaction and on the acidifying effects of N fertilizers on the base status of soils. Samples of 27 species of cereal, grass, legume, and miscellaneous field and vegetable crops were collected from a wide range of environmental conditions in the field. The plants were analyzed for total N, nitrate N, and excess‐base (EB); and calculations were made of excess‐base/organic N ratios (EB/N). Similar determinations were also made on the principal plant parts of 13 crop species. Marked differences were found in the excess‐base of the various crop species. The average EB ranged from 30 meq/100 g for wheat (Triticum aestivum L.) to 213 meq/100 g for tobacco (Nicotiana tabacum L.). In general, monocotyledons were lower in EB than dicotyledons. Likewise, crop species showed distinctive differences in EB/N ratios, ranging from 0.24 for cabbage (Brassica oleracea capitata) to 1.09 for buckwheat (Fagopyrum esculentum). Samples of a given crop species grown under a wide range of environmental conditions showed considerable range in EB and EB/N ratios. For most crop species the coefficients of variation of EB/N ranged from 10 to 20%. The principal plant parts of a given crop species showed in many instances moderate to large differences in EB and EB/N. Thus, differences in the proportion of plant parts in different samples may affect the EB and EB/N of a given species. The significance of the differences in the EB/N of various crop species in modifying the effect of N fertilizers on soil acidity is discussed.

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confidence: 99%

“…Most studies of the excess-base content of fieldgrown crops, or of their mineral element composition -from which excess-base can be calculated, have been with food crops or forages and grains used for animal feeds (5,7,13). Of these, the most comprehensive study was that made in Germany by Mach and Herrmann (13).…”

mentioning

confidence: 99%

Excess‐Base and Excess‐Base/Nitrogen Ratio of Various Crop Species and Parts of Plants¹

Pierre¹,

Banwart²

1973

Agronomy Journal

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“…This can lead to a wide range of values. Such a range was found for horticultural kales by Davidson & LeClerc (1936) who reported manganese values from 11 to 137 p.p.m. Only the values at the lower end of this range are comparable with those reported here for the kales.…”

Section: Manganesementioning

confidence: 52%

“…The copper values reported here are very low, particularly for the kales. The only other reported values appear to be those of Davidson & LeClerc (1936) who found a range of 24-56 p.p.m. in the edible portions of horticultural kales.…”

Section: Coppermentioning

confidence: 88%

Studies of the chemical composition of kales and rapes III. The minor elements

Jones

1959

J. Agric. Sci.

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1. Four varieties of marrow stem kale, three of thousand headed kale, Hungry Gap Kale, Rape-Kale and five other rape varieties were sampled at two centres in mid-Wales and separate leaf and stem samples analysed for manganese, molybdenum and boron. Similar samples of four varieties of marrow stem kale, two of thousand headed kale, Hungry Gap Kale, Rape-Kale and two other varieties of rape were taken from two further centres and prepared with the most stringent precautions to prevent contamination. Iron, copper, zinc and lead were determined in these samples.

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Intake of Potassium, an Important Consideration in Addison's Disease

Wilder¹,

Kendall²,

Snell³

et al. 1937

Arch Intern Med (Chic)

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The Variation in the Mineral Content of Vegetables

Cited by 17 publications

References 9 publications

Excess‐Base and Excess‐Base/Nitrogen Ratio of Various Crop Species and Parts of Plants¹

Excess‐Base and Excess‐Base/Nitrogen Ratio of Various Crop Species and Parts of Plants¹

Studies of the chemical composition of kales and rapes III. The minor elements

Intake of Potassium, an Important Consideration in Addison's Disease

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The Variation in the Mineral Content of Vegetables

Cited by 17 publications

References 9 publications

Excess‐Base and Excess‐Base/Nitrogen Ratio of Various Crop Species and Parts of Plants1

Excess‐Base and Excess‐Base/Nitrogen Ratio of Various Crop Species and Parts of Plants1

Studies of the chemical composition of kales and rapes III. The minor elements

Intake of Potassium, an Important Consideration in Addison's Disease

Contact Info

Product

Resources

About

Excess‐Base and Excess‐Base/Nitrogen Ratio of Various Crop Species and Parts of Plants¹

Excess‐Base and Excess‐Base/Nitrogen Ratio of Various Crop Species and Parts of Plants¹