Abstract
The effect of nitrogen fertilisation on growth, foliar nutrients and water relations of four families of radiata pine (Pinus radiata, D. Don) currently in the Australian breeding program was examined from age six to 11 years. At this stage, the stand was ready for commercial thinning. The annual rainfall at the site varied from 563 to 733 mm.
Application of nitrogen fertiliser resulted in stem wood volume at age nine years of 178 m3 ha-1 in the controls, compared with 228 m3 ha-1 in plots treated with 600 kg N ha-1. Pre-dawn needle water potential (Ψ) measured in three consecutive summers (when rainfall ranged from 53 to 106 mm) were consistently higher (less water stress) in nitrogen fertilised than in control trees. Similarly, the water stress integral (SΨ) decreased consistently with increasing levels of nitrogen, although total water use in fertilised trees would have been substantially higher because fertiliser application increased the leaf area index. The relationship between SΨ and basal area was strong and paralleled that of foliar nitrogen concentration and basal area growth. Therefore, nitrogen application increased growth rates of trees by improving the nutrient status of trees and lowering the water stress on trees in summer.
Families showed markedly different responses of basal area growth to nitrogen, ranging from an increase of 9.4% over three years for the least responsive family to 99.0% for the most responsive. There was no nitrogen × family interaction on Ψ or SΨ suggesting that the large genetic variation in the growth response to nitrogen is mediated by factors other than water relations. These results have implications for managing highly productive plantations grown in an environment where rainfall is low compared to potential evapotranspiration.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsPreview
Unable to display preview. Download preview PDF.
References
Boardman R 1988 living on the edge: the development of silviculture in South Australian plantations. Aust. For. 51, 135–136.
Boomsa D B and Hunter I R 1990 Effects of water, nutrients and their interactions on tree growth, and plantation forest management practices in Australasia: A review. For. Ecol. Manage. 30, 455–476.
Brix H and Mitchell A K 1986 Thinning and nitrogen effects on soil and tree water status in Douglas-fir stand. Can. J. For. Res. 16, 1334–1338.
Fife D N, Nambiar E K S and Smethurst P J 1991 Managing the nitrogen fertilisation of Pinus radiata from planting to age 10 years. CSIRO, Division of Forestry, User Series No. 4.
Hillerdal-Hagstromer K E, Mattson-Djos E and Hellkvist J 1982 Field studies of water relations and photosynthesis in Scots pine. II Influence of irrigation and fertilisation on needle water potential of young pine trees. Physiol. Plant. 54, 295–301.
Hunter I R, Graham J D, Prince J M and Nicholson G M 1986 What site factors determine the 4-year basal area response of Pinus radiata to nitrogen fertiliser?. N. Z. J. For. Sci. 16, 30–40
Mitchell B A and Correll R L 1987 The soil water regime in a young radiata pine plantation in south-eastern Australia. New For. 4, 273–289.
Myers B J 1988 Water stress integral-a link between short-term stress and long-term growth. Tree Physiol. 4, 315–323.
Myers B J and Talmna T 1992 Site water balance and tree water status in irrigated and fertilised stands of Pinus radiata. For. Ecol. Manage. 52, 17–42.
Nambiar E K S 1984 Increasing forest productivity through genetic improvement of nutritional characteristics. In Forest Potentials, Productivity and Value. Eds. R Ballard, P Farnum, G A Ritchie and J K Wingum. pp 191–215. Weyerhauser Science Symp. No. 4, Weyerhauser Co., Tacoma, Washington.
Nambiar E K S 1990 Interplay between nutrients, water, root growth and productivity in young plantations. For. Ecol. Manage. 30, 213–232.
Nambiar E K S 1990/91 Management of forests under nutrient and water stress. Water Air Soil Pollut. 54, 209–230.
Radin J W and Boyer J S 1982 Control of leaf expansion by nitrogen nutrition in sunflower plants. Plant Physiol. 69, 372–377.
Ruiter J H 1987 Growth, crop conductance and prediction of stem volume increment of irrigated and non-irrigated young radiata pine in non-weighing lysimeters. For. Ecol Manage. 20, 79–96.
Sheriff D W, Nambiar E K S and Fife D N 1986 Relationships between nutrient status, carbon assimilation and water use efficiency in Pinus radiata (D. Don) needles. Tree Physiol. 2, 73–88.
Smethurst P J and Nambiar E K S 1990 Effects of slash and litter management on fluxes of nitrogen and tree growth in a young Pinus radiata plantation Can. J. For. Res. 20, 1498–1507.
Snowdon P and Waring H D 1991 Effects of irrigation and artificial drought on the growth and health of Pinus radiata. Aust. For. 54, 174–186.
Waring H D and Snowdon P 1984 Effects of clover and fertilisation on growth, biomass and root development by twelve Pinus radiata families. In Proc. IUFRO Symposium Site Productivity of Fast Growing Plantations. Eds. D C Grey, A P G Schonau and C J Schultz. pp 597–607. South African Forest Research Institute, Pretoria.
White T L, Matheson A C, Boomsma D B and Rout A F 1991 Logistics, costs, and genetic gains of five options of nucleus breeding strategies. South. Tree Breeding Tech. Report 92-10.
Woods P V, Nambiar E K S and Smethurst P J 1992 Effect of annual weeds on water and nitrogen availability to Pinus radiata in a young plantation. For. Ecol. Manage. 48, 145–163.
Author information
Authors and Affiliations
Editor information
Rights and permissions
Copyright information
© 1995 Springer Science+Business Media Dordrecht
About this chapter
Cite this chapter
Fife, D.N., Nambiar, E.K.S. (1995). Effect of nitrogen on growth and water relations of radiata pine families. In: Nilsson, L.O., Hüttl, R.F., Johansson, U.T. (eds) Nutrient Uptake and Cycling in Forest Ecosystems. Developments in Plant and Soil Sciences, vol 62. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-0455-5_32
Download citation
DOI: https://doi.org/10.1007/978-94-011-0455-5_32
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-4204-8
Online ISBN: 978-94-011-0455-5
eBook Packages: Springer Book Archive