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NUTRIENT AND GROWTH RESPONSES OF LEERSIA ORYZOIDES, RICE CUTGRASS, TO VARYING DEGREES OF SOIL SATURATION AND WATER NITROGEN CONCENTRATION

Permanent URL:
http://handle.nal.usda.gov/10113/58923
File:
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Abstract:
Leersia oryzoides (rice cutgrass) is an obligate wetland plant common to agricultural drainage ditches. The objective of this greenhouse study was to expose plants to various flooding and aqueous nitrogen (N) concentrations and then to quantify the allocation of nutrients and biomass to plant components. Plants in the continuously flooded treatment (CF) had the highest tissue concentrations of copper (Cu), sulfur (S), zinc (Zn), potassium (K), sodium (Na), and manganese (Mn) in one or more plant components. Plants in the partially flooded treatment (PF) had the highest concentrations of magnesium (Mg) in leaves. The N input affected phosphorus (P) and S concentrations in roots. Leaf, stem, and root biomass were highest in PF plants. Rhizome biomass was the lowest in CF plants. These results indicate that L. oryzoides may significantly affect elemental concentrations in surface waters by its ability to uptake various elements and subsequent sequestration in various biomass components.
Author(s):
Melissa B. Koontz , Joshua M. Koontz , S. R. Pezeshki , Matthew Moore
Note:
Original article title in upper case
Source:
Journal of plant nutrition 2013 12 6 2013 v.36 no.14
Language:
English
Publisher:
Taylor & Francis Group
Year:
2013
Collection:
Journal Articles, USDA Authors, Peer-Reviewed