Articles

EFFECTS OF CONTROLLED-RELEASE FERTILIZER APPLICATION RATES ON FROND COLOR AND BIOMASS PRODUCTION OF AN ARSENIC HYPERACCUMULATING FERN

Article number
659_90
Pages
693 – 696
Language
English
Abstract
Arsenic is a carcinogenic and toxic contaminant of soils and groundwater around the world.
The Chinese brake fern (Pteris vittata) has recently been shown to be an arsenic hyperaccumulator; however, little is known about its nutritional requirements.
Mass production of this fern will be necessary to supply plants for bioremediation projects.
Chinese brake fern was grown for a year in a greenhouse in Sphagnum-based soilless growing medium. Plants were fertilized with six rates (1, 2, 3, 4, 5 or 6 g/pot) of a 15N 4P 10K controlled-release fertilizer (CRF) applied every two months). Frond color, chlorophyll content, and dry mass were determined periodically.
Greenness (L*, h°, SPAD) and biomass increased linearly with increasing CRF application rates.
Frond dry biomass production was 2.4 times greater at the highest than at the lowest rate.

Publication
Authors
R.H. Stamps, D.K. Rock
Keywords
chlorophyll, dry weight, SPAD, yield
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