Effects of Trichoderma harzianum YC459 and soil types on seed germination and seedling growth in rock slope restoration Effects of Trichoderma harzianum YC459 and soil types on seed germination and seedling growth in rock slope restoration

最小化 最大化

Vol15 No.4: 730-737

Title】Effects of Trichoderma harzianum YC459 and soil types on seed germination and seedling growth in rock slope restoration

Author】MA Hoseop1; ETTAGBOR Hans Enukwa1*; KIM Choonsig2

Addresses】1 Department of Forest Environmental Resources, Institute of Agriculture and Life Science, Gyeongsang National University, Jinju 52828, Korea; 2 Department of Forest Resources, Gyeongnam National University of Science and Technology, Jinju 52725, Korea

Corresponding author】ETTAGBOR Hans Enukwa

Citation】Ma HS, Ettagbor HE, Kim C (2018) Effects of Trichoderma harzianum YC459 and soil types on seed germination and seedling growth in rock slope restoration. Journal of Mountain Science 15(4). https://doi.org/10.1007/s11629-017-4533-6.

DOI】10.1007/s11629-017-4533-6.

Abstract】We carried out experiments with various concentrations of Trichoderma harzianum YC459 in different soil types (forest soil, mixed soil, merchantable soil, and leaf mold soil) to evaluate its effect on seed germination and seedling establishment of four species (Festuca arundinacea Schreb., Dianthus barbatus var. asiaticus Nakai, Lespedeza cyrtobotrya Miq., and Parthenocissus tricuspidata Planch) for rock slope restoration. We also investigated the use of drilled slanted holes on the rock slopes for seedling establishment. The results showed that T. harzianum concentration had significant effects on seed germination, seedling growth, and seedling survival for all the species with different soil types. Seed germination and survival rates peaked at 5% T. harzianum concentration with leaf mold soil and decreased as T. harzianum concentration increased from 5% to 10%. Seedling survival rates of all four species were generally lowest at 0% T. harzianum concentration in all soil types. The height of F. arundinacea and L. cyrtobotrya peaked at 5% T. harzianum concentration whereas that of D. barbatus and P. tricuspidata peaked at 10% T. harzianum concentration. We concluded that 5% T. harzianum concentration with leaf mold soil is appropriate for seed germination and seedling survival rates of most species, thus enhancing seedling establishment. Practical application of the findings of this study will contribute in the vegetation restoration of steep rocks in mountain environments.

KeywordsDianthus barbatus; Drilled holes; Festuca arundinacea; Lespedeza cyrtobotrya; Seedling establishment; Seedling survival