Articles
Coleus foliar nutrient sufficiency ranges and growth response to nitrogen concentrations
Article number
1266_10
Pages
63 – 70
Language
English
Abstract
Three coleus (Plectranthus scutellarioides) cultivars were grown with one of five constant liquid fertilizer concentrations (75, 100, 200, 300, or 400 mg L‑1 N) using a 13N-0.86P-10.8K fertilizer.
The cultivars used were Broad Street, Stained Glassworks Eruption, and Wall Street. Tissue samples were collected and analyzed for concentrations of nutrient concentrations at two different times.
At each harvest date, plant height, plant diameter, and shoot dry weight were recorded.
Each cultivar achieved maximum growth when grown with ≤300 mg L‑1 N, while 400 mg L‑1 N was detrimental.
Foliar nutrient sufficiency ranges were determined based on fertilizer concentrations resulting in maximum growth for each cultivar.
These results provide improved coleus fertilization recommendations and foliar sufficiency ranges.
The cultivars used were Broad Street, Stained Glassworks Eruption, and Wall Street. Tissue samples were collected and analyzed for concentrations of nutrient concentrations at two different times.
At each harvest date, plant height, plant diameter, and shoot dry weight were recorded.
Each cultivar achieved maximum growth when grown with ≤300 mg L‑1 N, while 400 mg L‑1 N was detrimental.
Foliar nutrient sufficiency ranges were determined based on fertilizer concentrations resulting in maximum growth for each cultivar.
These results provide improved coleus fertilization recommendations and foliar sufficiency ranges.
Publication
Authors
J.B. Henry, I. McCall, B.E. Whipker
Keywords
nutrition, fertilizers, floriculture, tissue analysis
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