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Total Plants: 186
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Plant Low PPM High PPM StdDev *Reference
Valerianella locusta Plant 275.0 350.0 2.6 *
Valerianella locusta Plant 275.0 350.0 2.6 *
Prunus domestica Fruit 1.0 255.0 4.3 *
Cydonia oblonga Fruit 85.0 160.0 2.4 *
Fragaria spp Fruit 1.0 160.0 2.4 *
Prunus persica Fruit 1.0 150.0 2.2 *
Brassica oleracea var. capitata l. Leaf 1.0 145.0 2.3 *
Nyssa sylvatica Leaf 2.0 136.0 2.0 *
Taraxacum officinale Leaf 4.0 125.0 1.7 Betting on Boron, Unpublished draft by J. A. Duke on file at USDA, draft and papers relating to boron percentages. Includes Internat. Z. Vit. Ern. Forschung 43:1973 (boron).
Malus domestica Fruit 1.0 110.0 1.4 *
Annona squamosa Leaf -- 107.0 1.2 *
Asparagus officinalis Shoot 6.0 104.0 1.5 *
Apium graveolens Root 4.0 103.0 2.9 *
Ficus carica Fruit 1.0 100.0 1.2 Betting on Boron, Unpublished draft by J. A. Duke on file at USDA, draft and papers relating to boron percentages. Includes Internat. Z. Vit. Ern. Forschung 43:1973 (boron).
Panax quinquefolius Plant 24.0 96.0 0.1 *
Lycopersicon esculentum Fruit -- 96.0 1.1 *
Papaver somniferum Seed 15.0 95.0 3.4 Betting on Boron, Unpublished draft by J. A. Duke on file at USDA, draft and papers relating to boron percentages. Includes Internat. Z. Vit. Ern. Forschung 43:1973 (boron).
Lactuca sativa Leaf 0.9 87.0 0.7 *
Brassica oleracea var. botrytis l. Leaf 1.0 85.0 0.6 *
Brassica oleracea var. italica Leaf 1.0 85.0 0.6 *
*Unless otherwise noted all references are to Duke, James A. 1992. Handbook of phytochemical constituents of GRAS herbs and other economic plants. Boca Raton, FL. CRC Press.