The effect of CaCO sub 3 on the uptake of phosphorus by two desert shrub species, Larrea tridentata (DC. ) Cov. and Parthenium incanum H. B. K
- Duke Univ., Durham, NC (USA)
In a phytotron growth study, the effects of soil CaCO{sub 3} on the uptake of P by two desert shrub species were species specific. Larrea tridentata seedlings responded to soil CaCO{sub 3} with increased root: shoot ratios, increased N:P ratios in tissues, and decreased specific absorption rates of P, indicating that CaCO{sub 3} directly inhibited the uptake or the availability of P to roots. Parthenium incanum seedlings responded negatively to CaCO{sub 3}, but this response was not specific to P uptake and did not appear to be caused by a reduction in P availability. Pedogenic carbonates, present in many arid-land soils of the world, might greatly affect both P availability and the biogeochemical cycle of P in desert ecosystems.
- OSTI ID:
- 5039629
- Journal Information:
- Botanical Gazette (Chicago); (USA), Vol. 149:3; ISSN 0006-8071
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CALCIUM CARBONATES
BIOLOGICAL EFFECTS
PHOSPHORUS
BIOLOGICAL AVAILABILITY
SHRUBS
PLANT GROWTH
ARID LANDS
BIOGEOCHEMISTRY
UPTAKE
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CARBON COMPOUNDS
CARBONATES
CHEMISTRY
ELEMENTS
GEOCHEMISTRY
GROWTH
NONMETALS
OXYGEN COMPOUNDS
PLANTS
540210* - Environment
Terrestrial- Basic Studies- (1990-)