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Effect of 16 different (N, P combination) fertilizer treatments on the growth of Liriodendron tulipifera seedlings and soil chemical properties in the Nursery Station

  • Jung Won Park (Department of Environment and Forest Resources, Chungnam National University) ;
  • Woo Bin Youn (Department of Environment and Forest Resources, Chungnam National University) ;
  • Byung Bae Park (Department of Environment and Forest Resources, Chungnam National University) ;
  • Min Seok Cho (Research Planning and Coordination Division, National Institute of Forest Science)
  • Received : 2023.03.06
  • Accepted : 2023.03.31
  • Published : 2023.06.01

Abstract

Appropriate fertilization methods are required according to species to supply necessary nutrients to plants and prevent soil environmental contamination in nurseries. In this study, the effects of nitrogen and phosphorus fertilization on the growth of Liriodendron tulipifera and soil characteristics were investigated. After 16 fertilization treatments (4 levels of nitrogen × 4 levels of phosphorus) were applied to one-year-old L. tulipifera seedlings at the Yongmun Nursery Station of the Korea Forest Service, height, root collar diameter (RCD), biomass, leaf nutrients, and soil characteristics were investigated. The height increased as the amount of nitrogen and phosphorus fertilization increased, and the RCD was the highest in the ×2 treatment. Biomass growth was on average 40.0% higher for the treatment with high nitrogen fertilization compared to the low nitrogen treatment. The seedling quality index was the highest with nitrogen and phosphorus ×2 treatment. Leaf phosphorus and magnesium concentrations decreased when nitrogen fertilization was applied, and leaf potassium concentrations decreased as nitrogen fertilization increased. Soil pH and exchangeable potassium decreased as the amount of phosphorus application increased, and exchangeable magnesium decreased as the amount of nitrogen application increased and increased as the amount of phosphorus application increased. Considering the growth of L. tulipifera seedlings and changes in the soil characteristics at the nursery stage, twice the standard fertilization amount is the appropriate fertilization amount for nursery of the Yongmun Nursery Station. It is expected that this study will contribute to improving nursery soil fertilization management technology for healthy seedling production.

Keywords

Acknowledgement

본 연구는 산림청 '산림과학기술 연구개발사업(2021379B10-2323-BD02)'의 지원을 받아 수행되었습니다.

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