Survival and growth response of selected reforestation seedlings to pure and mixed sludge media

摘要

Seedlings of Eucalyptus deglupta Blume, Triplaris cumingiana Fisch. and Mey., Pinus kesiya Royle ex Cordon, Alnus maritima Mersh. ex Nutt, Pterocarpus indicus Willd. and Swietenia macrophylla King were tested as to survival and growth response to sewer sludge mixed media. The height and diameter increments of Eucalyptus deglupta and Triplaris cumingiana were significantly influenced by the sewer sludge whether pure or in mixture with other media. Pinus kesiya Royle ex Gordon grown in sewer sludge + topsoil + sand, performed better in height and diameter growth than in the other media. The total dry matter yield of Triplaris cumingiana, Eucalyptus deglupta and Swietenia macrophylla were significantly influenced by the sewer sludge treatment.