Effect of drought stress treatment towards growth of seedlings of cempaka wasian, nantu, and mahoni

Abstract

Climate change has shortened the rainy season compared to the dry season in North Sulawesi. The El Nino phenomenon occurred in 2015 had an impact on the death of clove plants due to drought. Drought stress testing on several types of forestry plants in the North Sulawesi area is a matter that needs to be done in line with these conditions. Development of cempaka wasian (Magnolia tsiampaca (Miq.) Dandy), nantu (Palaquium obtusifolium Burck), and mahoni (Swietenia macrophylla King) plantations have been carried out by communities in North Sulawesi for a long time and have very good prospects. The research was done by conducting a simulation test at seedling level with treatment to be tested on volume and interval of watering. The watering volume consists of 3 levels, i.e. 100%, 50%, and 25% watering of the field capacity, while the watering intervals included once-daily, 3-day and 5-day watering once for 18 weeks. The results showed that nantu species has better resistance to drought stress conditions compared with mahogany and cempaka wasian.

Local wisdom in conserving Magnolia sulawesiana the endemic and endangered tree species in Sulawesi, Indonesia

“…Implementing agroforestry systems will differ depending on several factors, including preferences for the type of commodity to be planted, market demand, and local wisdom of the local community. For example, in West Timor's agroforestry system, farmers cultivate crops based on altitude and water availability [1,9]. Additionally, water availability determines crop types and rotation patterns in a given region [10,11].…”

Are Tree Seed Systems for Forest Landscape Restoration Fit for Purpose? An Analysis of Four Asian Countries

“…Provenance-based selection and use of seed transfer zones however are still limited for native species, even for the priority species for rehabilitation. Some initial research into the effects of climate change on native species has been conducted, for example regarding changes in species distribution and richness [87], altered flowering and fruiting periods of Dipterocarps [88] and Sandalwood [89] in forest stands, identification of drought-resistant species [90] as well as the impact of drought and waterlogging of some native species under controlled conditions [91][92][93]. However, it is currently not sufficient to inform climate-resilient selection of species and seed sourcing for FLR.…”

Factors causing the death of Kabesak (Acacia leucophloea Roxb. Willd.) seedlings in the monsoon tropical forest of Timor Island

“…Menurut Wang et al (2017) salah satu faktor lingkungan lain yang berpengaruh terhadap kematian semai dan sapling adalah suhu. Meski demikian, semai setiap spesies memiliki ketahanan yang berbeda terhadap cekaman kekeringan maupun ketersediaan hara tanah (Irawan et al, 2019). Oleh karena itu, penting untuk mempelajari daya tahan masing-masing spesies tanaman hutan terhadap cekaman lingkungan.…”