Container size and site quality affect survival and early growth performance of New Zealand native tree species

Abstract

As part of the global effort to mitigate climate change effects, New Zealand’s Climate Change Commission has recommended the establishment of 300,000 ha of native trees across the country by 2035. To achieve this goal, significant improvement in seedling production and field establishment is needed. Across New Zealand, there is a trade-off between seedling size and early seedling establishment success; plants grown in large pots are more resistant to weeds, pests and frost; however, they are more expensive and take longer to grow. We tested this trade-off between cost and establishment success by raising seedlings of twelve key native species in three container grade sizes: small, large, and revegetation grade, and tracking their success across five sites around Rotorua, in the Central North Island of New Zealand. After two-year post-planting, we found that high-quality sites and larger container systems tended to promote higher survival and faster early growth (plant height and root collar diameter). Some species, such as Kunzea ericoides and Leptospermum scoparium, survived and grew well (> 75%) even when raised in small container sizes. Other species such as Sophora microphylla had very low survival (< 25%) even when raised in revegetation container grade sizes. If the quality of the planting site is high, the container size seems to be less important for most species. Other species such as Aristotelia serrata, Cordyline australis, Plagianthus regius and Podocarpus totara appear to depend more on site quality. In conclusion, nursery container systems for raising New Zealand native plants should be chosen based on the biology of the species, nursery management practices, quality of the planting site, and a balance between cost and benefit for each situation.

Keywords

Seedling production / Containerised seedlings / Afforestation / Degraded areas / Site quality

References

[1] Aghai MM, Pinto JR, Davis AS. Container volume and growing density influence western larch (Larix occidentalis Nutt.) seedling development during nursery culture and establishment. New For, 2014, 45(2): 199-213

[2] Bayne KM (2021) Covid-19: Extending the planting season—Industry survey

[3] Bergin D. Early performance of planted totara in comparison with other indigenous conifers. N Z J Sci, 2003, 33(2): 205-224

[4] Buckley HL, Hall D, Jarvis RM, Smith V, Walker LA, Silby J, Hinchliffe G, Stanley MC, Sweeney AP, Case BS. Using long-term experimental restoration of agroecosystems in Aotearoa New Zealand to improve implementation of Nature-based Solutions for climate change mitigation. Front Glob Change, 2023, 5: 950041

[5] Cabreira GV, Leles PSS, Alonso JM, Abreu AHM, Arthur Junior JC, Gusmao AVV, Lopes NF. Fertilization and containers in the seedlings production and post-planting survival of Schizolobium parahyba. Ciencia Florest, 2019, 29(4): 1644-1657

[6] Chu XL, Wang XH, Zhang DB, Wu XL, Zhou ZC. Effects of fertilization and container-type on nutrient uptake and utilization by four subtropical tree seedlings. J Res, 2020, 31(41201-1213

[7] Close DC, Paterson S, Corkrey R, McArthur C. Influences of seedling size, container type and mammal browsing on the establishment of Eucalyptus globulus in plantation forestry. New for, 2010, 39(1): 105-115

[8] Davis Anthony S, Pinto Jeremiah R. The scientific basis of the target plant concept: an overview. Forests, 2021, 12(9): 1293

[9] de la Fuente LM, Ovalle J, Arellano E, Ginocchio R. Does woody species with contrasting root architecture require different container size in nursery?. Madera Y Bosques, 2018, 24(2e2421419

[10] Goulet F. Frost heaving of forest tree seedlings: a review. New for, 1995, 9(167-94

[11] Haase D, Davis AS. Developing and supporting quality nursery facilities and staff are necessary to meet global forest and landscape restoration needs. REFORESTA, 2017

[12] Haase D, Bouzza K, Emerton L, Friday J, Lieberg B, Aldrete A, Davis AS. The high cost of the low-cost Polybag system: a review of nursery seedling production systems. Land, 2021, 10(8): 826

[13] Harayama H, Tsuyama I, Kitao M, Yamada T, Furuya N, Utsugi H, Sasaki S. Effects of seedling size, stock type, and mechanical site preparation method on initial survival and growth of Japanese larch (Larix kaempferi) seedlings. Forests, 2023, 14(4784

[14] Landis TD (1990). The target plant concept—a history and brief overview. In RMES-P-65, Proceedings of the forest and conservation nursery Association

[15] New Zealand’s Climate Change Commission—New Zealand Government. (2021). Ināia tonu nei: a low emission future for Aotearoa. Wellington: Ministry for the environment. https://www.climatecommission.govt.nz/our-work/advice-to-government-topic/inaia-tonu-nei-a-low-emissions-future-for-aotearoa/#:~:text=Aotearoa%20has%20committed%20to%20reaching,advice%20to%20reach%20those%20targets [accessed on 27.08.2023]

[16] Oliet JA, Ortiz de Urbina E, Sánchez-Pinillos M, Tardío-Cerrillo G. Matching seedling size to planting conditions: interactive response with soil moisture. Iforest, 2019, 12(2220-225

[17] Pinto JR, Marshall JD, Dumroese RK, Davis AS, Cobos DR. Establishment and growth of container seedlings for reforestation: a function of stocktype and edaphic conditions. For Ecol Manag, 2011, 261(11): 1876-1884

[18] Puértolas J, Jacobs DF, Benito LF, Peñuelas JL. Cost–benefit analysis of different container capacities and fertilization regimes in Pinus stock-type production for forest restoration in dry Mediterranean areas. Ecol Eng, 2012, 44: 210-215

[19] R Core team (2023) A language and environment for statistical computing. R foundation for statistical computing, Vienna, Austria. https://www.R-project.org/

[20] Rocha MEL, Ristau ACP, Cruz MSFV, de Oliveira Neto CF, de Matos MM, Malavasi UC. Growth dynamics of container seedlings of Eucalyptus grandis x Eucalyptus urophylla and Hymenaea courbaril L. Rev Ceres, 2022, 69(4): 425-435

[21] Saunders, L. (2017). The Manuka and Kanuka plantation guide. https://www.trc.govt.nz/assets/Documents/Guidelines/Land-infosheets/Manuka-plantation-guide-landcare-April2017.pdf

[22] Thomas BR, Schreiber SG, Kamelchuk DP. Impact of planting container type on growth and survival of three hybrid poplar clones in central Alberta. Canada New For, 2016, 47(6): 815-827

[23] Tian N, Fang SZ, Yang WX, Shang XL, Fu XX. Influence of container type and growth medium on seedling growth and root morphology of Cyclocarya paliurus during nursery culture. Forests, 2017, 8(10): 387

[24] Vieira LM, Gomes EN, Brown TA, Constantino V, Zanette F. Growth and quality of Brazilian pine tree seedlings as affected by container type and volume. Ornam Hortic, 2019, 25(3276-286

[25] Walter LS, Moura MM, Gabira MM, de Aguiar NS, Steupp CA, Kratz D. How shading and container type influence Ilex paraguariensis A.St.-hil. seedling production. For Sci, 2022, 68(5–6): 533-539

Funding

New Zealand Forest Research Institute Limited

RIGHTS & PERMISSIONS

The Author(s)