Microclimate-based mortality analysis of the Cibodas Botanic Gardens plant collection

Despite the routinely conducted treatment and maintenance of garden plant collection, the monthly mortality figures of the Cibodas Botanic Gardens (CBG) plant collections remain significant. It is presumed that the microclimate has a crucial influence on plant survivorship in the field. This study aimed to analyze the effect of microclimate conditions on the mortality rate of the CBG plant collection. The study was conducted by correlating the number of mortal plants with CBG monthly microclimatic conditions from 2017 to 2018. The analyzed microclimate parameters were temperature, relative humidity, precipitation, wind velocity, and solar radiation. The multiple regression modeling, t-test, and Pearson correlation test (r) were utilized to measure the level of significance of the correlation (α = 0.05). The findings were shown that the maximum wind velocity was the primary unit correlated to the number of mortality. The correlation was strong positive (r = 68.8%), and significant (p-value α). We suggested anticipating the disadvantages influences of strong wind supported by other extreme microclimate units, such as heavy rain. These events frequently caused high damage to the tree and other plant collections. These are expected to be taken into a consideration by the CBG operator and management in order to forecast and mitigate the risks of future plant collection losses

Bogor Botanic Gardens

Bogor Botanic Gardens (BBG) was established in 1817 and is the oldest botanic garden in South East Asia. The garden has long been a centre for scientific research and has been the founding institution of a number of other research centres in Indonesia, particularly in the life sciences. The garden initially covered 47 ha but has expanded over the years and is now 87 ha. It has evolved over its 200-year history from a collection of economically valuable plants to the multi-faceted institute it is today, undertaking activities in plant conservation, research, education, ecotourism and environmental services. In recent years, it has strengthened its role in plant conservation through the establishment of 32 new botanic gardens across Indonesia. These new gardens are managed by local government and universities and supervised by BBG. In its bicentenary year, 2017, BBG organised a number of activities, programmes and celebrations and these are highlighted in thisarticle

EKSPLORASI FLORA HUTAN TANAH APER CAGAR ALAM GUNUNG NIUT

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The Effects of NPK Fertilizer, Manure and Vesicular Arbuscular Mycorrhiza (VAM) on the Growth, Biomass and Artemisinin Content of Artemisia Annua L.

Most artemisinin is extracted from an annual herb Artemisia annua L. but the cultivation in Indonesia is limited bythe low yield of the artemisin incontent that is not economically beneficial to industry. Improvement on cultivatedvarieties and cultivation techniques is therefore needed. This work aims to improve the cultivation techniques byevaluating the application effects of NPK, manure, and VAM on the artemisinin yield of A. annua. The experimentwas set using a Split Split Plot Design involving three factors. First factor was the application of four dosages ofNPK (0 kg ha-1 as a control; 40:40:40 kg ha-1; 80:80:80 kg ha-1; and 120:120:120 kg ha-1). Second factor wasmanure addition (using 0 ton ha-1 and 150 tons ha-1). Third factor wasthe application of mycorrhiza (0 g plant-1and15 g plant-1). The experiment was divided into three different groups based on the seed sources (Bandung, Cibodas,and Tawangmangu plants) using similar treatments. The results showed that the plant growth (Relative GrowthRates/RGR of plant heights and number of branches), leaf yield, and total plant biomass were much affected byNPK. The addition of manure has less significant effect on those parameters. Only VAM seems to influence theartemisinin content. The highest artemisinin yield (5 kg ha-1) was relatively low when compared to the productionin USA, China, and Brazil. However the result shows that a low fertilizer input of 40:40:40 kg NPK ha-1 and aninoculation of VAM were recommended for cultivating A. annua resulting a significantly high yield of artemisinin