TY - JOUR
T1 - Responses of six species of proteaceae, in containers, to controlled-release fertilizer
AU - Parks, Sophie E.
AU - Haigh, Anthony M.
AU - Harris, A. M.
PY - 2007
Y1 - 2007
N2 - Seedlings of Adenanthos sericeus, Banksia ericifolia, Banksia hookeriana, Conospermum caeruleum, Protea cv. Masquerade, and Leucadendron cv. Sundance were grown in a soilless potting medium containing controlled-release OsmocoteÃ"šÃ‚® fertilizer (17:1.6:8.7) at eight treatment levels: 0, 1.25, 2.5, 3.75, 5.0, 6.25, 12.5, and 18.75Ã"šÃ‚ kgÃ"šÃ‚ m-3. After 6 months, shoot dry mass and the concentrations of nitrogen (N), phosphorus (P), and potassium (K) in recently matured leaves were determined. At the lowest rate of applied fertilizer, growth was stunted for all species. Maximum shoot dry mass was associated with a fertilizer rate of 2.0Ã"šÃ‚ kgÃ"šÃ‚ m-3 for L. cv. Sundance, 2.5Ã"šÃ‚ kgÃ"šÃ‚ m-3 for C. caeruleum and B. ericifolia, and 3.75Ã"šÃ‚ kgÃ"šÃ‚ m-3 for P. cv. Masquerade, B. hookeriana, and A. sericeus. At the highest fertilizer rate, for all species except A. sericeus, plants displayed foliar symptoms typical of fertilizer excess, and growth was reduced. A range of concentrations of N, P, and K in leaves at optimum growth was determined for each species.
AB - Seedlings of Adenanthos sericeus, Banksia ericifolia, Banksia hookeriana, Conospermum caeruleum, Protea cv. Masquerade, and Leucadendron cv. Sundance were grown in a soilless potting medium containing controlled-release OsmocoteÃ"šÃ‚® fertilizer (17:1.6:8.7) at eight treatment levels: 0, 1.25, 2.5, 3.75, 5.0, 6.25, 12.5, and 18.75Ã"šÃ‚ kgÃ"šÃ‚ m-3. After 6 months, shoot dry mass and the concentrations of nitrogen (N), phosphorus (P), and potassium (K) in recently matured leaves were determined. At the lowest rate of applied fertilizer, growth was stunted for all species. Maximum shoot dry mass was associated with a fertilizer rate of 2.0Ã"šÃ‚ kgÃ"šÃ‚ m-3 for L. cv. Sundance, 2.5Ã"šÃ‚ kgÃ"šÃ‚ m-3 for C. caeruleum and B. ericifolia, and 3.75Ã"šÃ‚ kgÃ"šÃ‚ m-3 for P. cv. Masquerade, B. hookeriana, and A. sericeus. At the highest fertilizer rate, for all species except A. sericeus, plants displayed foliar symptoms typical of fertilizer excess, and growth was reduced. A range of concentrations of N, P, and K in leaves at optimum growth was determined for each species.
KW - Banksia
KW - Proteaceae
KW - fertilizers
KW - nutrition
KW - plants
KW - soil science
UR - http://handle.uws.edu.au:8081/1959.7/36929
M3 - Article
SN - 0010-3624
JO - Communications in Soil Science and Plant Analysis
JF - Communications in Soil Science and Plant Analysis
ER -