Effectiveness Test of Orchid Mycorrhizal Isolate (Ceratorhiza and Trichoderma) Indonesia and Its Role as a Biofertilizer: Critical Overview | Chapter 14 | Current Research Trends in Biological Science Vol. 1

Aim: The existence of Orchid Mycorrhizal Fungi (OMF) has a role to stimulate growth and support the supply of orchid nutrition as a biofertilizer agent. This study aimed to determine the association of mycorrhizal with Phalaenopsis amabilis (L.) Blume which was carried out through the effectiveness test of two Indonesian orchid mycorrhizal isolates i.e. Ceratorhiza and Trichoderma. Study Design: This study consisted of 4 treatments. Each treatment was repeated 3 times, each repetition of 5 plantlets, so that the total plantlet used was 60. Place and Duration of Study: Laboratory of Plant Biotechnology, Department of Biology, Universitas Gadjah Mada, Indonesia, between June 2017 and April 2018. Methodology: The method of inoculating orchid mycorrhizal by placing a plantlet in a petri dish containing orchid mycorrhizal for 1, 2, 3 and 4 days. Then plantlets are grown on sterile moss growing media and acclimatized in a greenhouse. Observation of each treatment is carried out every day for the next month. Observation variables include the number of initial and final roots, the number of live and dead roots, and the number of living and dead plants. Results: The results of the orchid mycorrhizal induction test showed that the Ceratorhiza inoculation treatment showed a fluctuation in the mean increase in the number of final roots, live roots, dead roots, and dead plantlets that were higher than the Trichoderma inoculation treatment. The results also showed that the best inoculation time on Ceratorhiza and Trichoderma was day 3 and 4. The adaptation process had the effect of increasing the number of dead roots in weeks 1 and 2. The adaptation process stopped at the beginning of week 4 with the number of new roots appearing a lot. Conclusion: Orchid mycorrhizal Ceratorhiza shows the value of effectiveness test compared with Trichoderma. The results of this study are expected to be basic information in efforts to cultivate natural orchids in Indonesia .

Author(s) Details

Dr. Mahfut

Faculty of Mathematics and Natural Sciences, University of Lampung, Lampung, 35145, Indonesia.

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Forward-Looking Information Based on Integrated Reporting Perspective: Value Relevance Study in Indonesia Stock Exchanges | Chapter 05 | Emerging Issues and Development in Economics and Trade Vol. 3

The International Integrated Reporting Council (IIRC) in 2013 has formulated the Integrated Report Framework. Integrated reporting provides forward-looking information related to the company’s holistic picture, future targets and the relationship between financial performance and non-financial performance. Indonesia does not require companies to report integrated reporting, but many voluntary ones have provided partial disclosures about aspects that are regulated in the integrated report framework. This study aims to provide empirical evidence about the effect of forward-looking disclosure on firm value. The research population is a manufacturing company on the Indonesia Stock Exchange for the 2015 and 2016 annual reports. The sample is selected based on the availability of annual reports accessed through the company’s web and the Indonesia Stock Exchange. The population is 144 manufacturing, and sample companies were 70 which was collected for two years, so there were 140 firms’ years. The forward-looking measurement is based on the disclosure index. GCG variables are used as control variables because empirically GCG can affect the value of the company. The results of the study showed that forward-looking disclosure has a significant effect on the value of the company and can explain the 20.9% variation in the value of the company.

Author(s) Details

Wiwik Utami
Universitas Mercu Buana, Indonesia.

Putri Dwi Wahyuni
Universitas Mercu Buana, Indonesia.

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