Abstract
We tested the effects of exponential nutrient loading and springtime carbon loading during nursery culture on the field performance of black spruce (Picea mariana (Mill.) B.S.P.). Seedlings were grown from seed with a conventional, fixed dose fertilizer (10 mg N seedling−1) or an exponential nutrient loading regime (75 mg N seedling−1). The following spring, seedlings were exposed for two weeks to either ambient (370 ppm) or elevated levels of CO2 (800 ppm) and then planted in the field; seedling growth was followed for the next six years. Exponential nutrient loading increased seedling height, stem diameter and leader growth, with the largest increases in height and leader length occurring in the first three years after outplanting. Carbon loading increased seedling height and leader length, but only in seedlings that had been exponentially nutrient loaded. A combination of carbon and nutrient loading increased shoot height 26%, stem diameter 37% and leader length 40% over trees that received neither treatment. These results demonstrate that the growth enhancement seen under exponential nutrient loading is maintained under field conditions for at least six years. Carbon loading just before outplanting was a useful supplement to nutrient loading, but was ineffective in the absence of nutrient loading.
References
Campagna MA, Margolis HA (1989) Influence of short-term atmospheric CO2 enrichment on growth, allocation patterns, and biochemistry of black spruce seedlings at different stages of development. Can J For Res 19:773–782
Grossnickle SC (2000) Ecophysiology of northern spruce species: the performance of planted seedlings. NRC Research Press, Ottawa, Canada
Imo M, Timmer VR (2001) Growth and nitrogen retranslocation of nutrient loaded Picea mariana seedlings planted on boreal mixedwood sites. Can J For Res 31:1357–1366
Johnsen KH (1993) Growth and ecophysiological responses of black spruce seedlings to elevated CO2 under varied water and nutrient additions. Can J For Res 23:1033–1042
Malik V, Timmer VR (1995) Interaction of nutrient loaded black spruce seedlings with neighboring vegetation in greenhouse environments. Can J For Res 25:1017–1023
Malik V, Timmer VR (1996) Growth, nutrient dynamics, and interspecific competition of nutrient-loaded black spruce seedlings on a boreal mixedwood site. Can J For Res 26:1651–1659
Malik V, Timmer VR (1998) Biomass partitioning and nitrogen retranslocation in black spruce seedlings on competitive mixedwood sites: a bioassay study. Can J For Res 28:206–215
Mcconnaughay KDM, Berntson GM, Bazzaz FA (1993) Limitations to CO2-induced growth enhancement in pot studies. Oecologia 94:550–557
Moore BD, Cheng SH, Sims D, et al (1999) The biochemical and molecular basis for photosynthetic acclimation to elevated atmospheric CO2. PCE 22:567–582
Mortensen LM (1987) CO2 enrichment in greenhouses - crop responses. Sci Hort 33:1–25
Sage RF (1994) Acclimation of photosynthesis to increasing atmospheric CO2 - the gas-exchange perspective. Photosynth Res 39:351–368
Timmer VR (1997) Exponential nutrient loading: a new fertilization technique to improve seedling performance on competitive sites. New Forest 13:279–299
Way DA, Sage RF (2004) Short-term exposure to elevated CO2 causes downwards regulation of photosynthesis in black spruce seedlings. In: A van der Est, D Bruce (eds) Photosynthesis: Fundamental Aspects to Global Perspectives. 13th International Congress of Photosynthesis, Montreal, 2004. Allen Press, 624–626
Acknowledgements
We thank N. Deutsch, J. Fraser, J. Havey, A. Kamler, F. Kocacinar, S. Nagy, H. Olav and E. Somerville for field assistance and data management, and A. Adelbaum for the seedlings. This study was supported by NSERC strategic grant #STPGP 223962-99 to RFS.
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Way, D.A., Seegobin, S.D. & Sage, R.F. The effect of carbon and nutrient loading during nursery culture on the growth of black spruce seedlings: a six-year field study. New Forests 34, 307–312 (2007). https://doi.org/10.1007/s11056-007-9053-8
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DOI: https://doi.org/10.1007/s11056-007-9053-8