Record Display for the EPA National Library Catalog
RECORD NUMBER: 3 OF 3| Main Title | Variation in Elemental Content of Lettuce Grown Under Base-Line Conditions in Five Controlled-Environment Facilities. | |||||||||||
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| Author | Berry, Wade L. ; Krizek, Donald T. ; Ormrod, Douglas P. ; McFarlane, James C. ; Langhans, Robert W. ; | |||||||||||
| CORP Author | American Society for Horticultural Science, Mount Vernon, VA. Growth Chamber Committee.;Environmental Protection Agency, Washington, DC. | |||||||||||
| Year Published | 1982 | |||||||||||
| Report Number | EPA-600/J-81-561; | |||||||||||
| Stock Number | PB82-224171 | |||||||||||
| Additional Subjects | Growth ; Nutrients ; Lettuce ; Concentration(Composition) ; Plant tissues ; Phosphorus ; Potassium ; Calcium ; Metals ; Emission spectroscopy ; Comparison ; Analysis of variance ; Chemical analysis ; Laboratories ; Water pollution ; Reprints ; | |||||||||||
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| Collation | 8p | |||||||||||
| Abstract | An interlaboratory comparison was made of the variation in elemental concentration of leaf lettuce (Lactuca sativa) plants grown under base-line conditions for 28 days in 5 controlled-environment facilities. Two studies were conducted by each of 5 investigators using a sphagnum peat-vermiculite mix obtained from a common source. Plant tissue from all studies was collected and analyzed at 1 laboratory for 10 essential elements (P, K, Ca, Mg, Fe, Mn, B, Zn, Cu, Mo) and 10 non-essential elements (Al, Si, Ti, Sr, Ba, Na, Pb, V, Li, and Sn) by arc emission spectrography. The 10 essential elements occurred at concentrations adequate for normal lettuce growth. |