Phosphorus and nitrogen plus phosphorus fertilization in loblolly pine pinus taeda stands at establishment

Gent, J.A.Jr; Allen, H.L.; Campbell, R.G.

Southern Journal of Applied Forestry 10(2): 114-117


DOI: 10.1093/sjaf/10.2.114
Accession: 006106592

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The effect of phosphorus and nitrogen plus phosphorus fertilization at time of establishment on the early height and diameter growth of loblolly pine (Pinus taeda L.) was examined in 18 studies on the southeastern Lower Coastal Plain [USA]. Growth responses varied substantially by soil type. Stands on very poorly drained clay sites did not respond to fertilization, while, stands on very poorly drained loams were the most responsive. Applications of nitrogen plus phosphorus gave consistently superior results when compared with phosphorus alone on poorly drained clay sites. Response to phosphorus alone generally proved superior or equal to nitrogen plus phosphorus on other soil-site types.