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- Title
Response of Native Plant, Ardisia pyramidalis (Cav.) Pers・ to Alkaline Soil Condition for Use in Urban Landscape in Manila City, Metro Manila, PhilippinesS Response of Native Plant, Ardisia pyramidalis (Cav.) Pers・ to Alkaline Soil Condition for Use in Urban Landscape in Manila City, Metro Manila, Philippines
- Authors
MEDINA, Norma G.; Nanako KILLMANN; Satoru TANAKA; Kojiro SUZUKI
- Abstract
Ardisia pyramidalis (Cav.) Pers・ is an evergreen tree and native species found in the Philippines with conspicuous flowers, edible leaves and medicinal values. Though rarely seen and commonly grown in nurseries, it is one of the native species that has potential for use in the urban environment One of the challenges of enriching biodiversity in the urban area is the establishment of native plant species able to cope with harsh soil condition like increasing soil pH that has strong impact on plant growth. Field survey showed that soil in urban area has pH more than 7.0 or sometimes over &0 while soil where Ardisia naturally grows showed acidic ranging from 41-6.2. Planted Ardisia was growing well at soil pH 6.0-7.5. Thus, experiments to evaluate the tolerance response of A, pyramidalis to alkaline soil were conducted in Laguna Philippines from October 2020 to December 2021. Seedlings were grown in pots with 8~kg soil with varying amount of lime (Ca (OH)2) The results showed survival of plants at soil pH 7.5-7.7. At soil pH> 8.3, the plants quickly defoliated but produce new leaves four to five months a仕er treatments. AlkaEne soil has significant effect on the number of leaves, tree height and leaf size of 4. pyramidalis. But even beyond the optimum soil pH range for most plants, growth performance of Ardisia indicated that it is sensitive to changes in pH and has a wide range of pH adaptability. Deeper understanding of soil characteristics is crucial to sustain good health condition of the tree in urban landscape.
- Subjects
MANILA (Philippines); NATIVE plants; PLANT growth; PH standards; CITIES &; towns
- Publication
Journal of Agriculture Science Tokyo, 2023, Vol 67, Issue 4, p165
- ISSN
0375-9202
- Publication type
Article