Survey of the nutrient status of Pinus radiata seedlings and of soil properties in three Victorian nurseries.  D. W. Flinn, P. Hopmans and F. G. Craig.  September 1980.  16 pp. (unpubl.)

SUMMARY

Results are presented of a survey of the nutrient status of bare-rooted Pinus radiata D. Don (radiata pine) seedlings raised at three Victorian nurseries between 1971 and 1973 and of some physical and chemical properties of the nursery soils.

Comparison of fertiliser input during each P. radiata crop with nutrient harvest in seedling tops showed that adjustments were required in the fertiliser regimes used in all nurseries; this was substantiated by the frequent occurrence of nutrient deficiencies in the seedlings and excessive levels of other nutrients in seedling tops. Appropriate fertiliser regimes should take account of both crop requirements and soil properties. Foliar and soil monitoring constitutes an objective method of identifying such regimes.

The results highlight the need for careful soil management in the nurseries to prevent deterioration in soil structure and ensure the efficient and continuous production of vigorous planting stock. The level of organic matter was shown to be sensitive to management and the study supports the current use of green manure crops to maintain or improve the organic matter levels in the soils.

Also published:

Flinn, D.W., Hopmans, P. and Craig, F.G. (1980)  Survey of the nutrient status of Pinus radiata seedlings and of soil properties in three Victorian nurseries.  Aust. For. 43 (1): 58-66.