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Reforestation Achievement Monitoring at Mining Area through Soil Index Model Nining Puspaningsih; Kukuh Murtilaksono; Naik Sinukaban; I Nengah Surati Jaya; Yadi Setiadi
Jurnal Manajemen Hutan Tropika Vol. 16 No. 2 (2010)
Publisher : Institut Pertanian Bogor (IPB University)

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The achievement of the reforestation is expected to reach a climax forest ecosystem. The objectives of this studywas to develop soil index model on monitoring of reforestation achievement. The study used a statistical approach to obtain soil index model to determine the achievement level of reforestation in mining area. The achievement indices for each variable were derived from the best regression model developed, while the weights of eachvariable were computed based on magnitude of regression coefficient for each indicator. The level of reforestationachievement index was initially developed by the use of 4 indicators, i.e. physical soil, biological soil, chemical soil, and litter index. Of those indicators, the study revealed that the heights weight for reforestation monitoring was chemical soil, which is composed pH, cation exchange capacity (CEC), macro-micro nutrient, and base saturation.

Mycorrhizal Inoculum Production Technique for Land Rehabilitation Yadi Setiadi
Jurnal Manajemen Hutan Tropika Vol. 8 No. 1 (2002)
Publisher : Institut Pertanian Bogor (IPB University)

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Spora cendawan mikoriza arbuskula (CMA) telah dikoleksi dan diisolasi dari berbagai jenis tanah masam berfikasi P-tinggi di Indonesia. Lima isolate CMA lokal telah berhasil diperoleh dari spora tunggal dengan teknik “test tube culture” dan dikembangkan-biakan dengan sistem “open pot culture”. Kelima isolate tersebut adalah Acaulospora delicata (EJ-01). Acaulospora tuberculata (INDO-2), Glomus manihotis (INDO-1), Glomus mosseae (PAL-03) dan Entrophospora colombiana (LAM-36). Kelima biakan isolate CMA tersebut, dipelihara dengan tanaman inang Kudzu pada media zeolit yang diperkaya nutrisi. Dengan mempelajari berbagai tipe media, ukuran partikel, pH dan komposisi nutrisi, isolate CMA terpilih telah berhasil dapat diperbanyak dalam skala industri dengan menggunakan inang sorghum. Dengan tehnik pra-inokulasi di persemaiaan maka penggunaan mikoriza dalam skala besar di bidang kehutanan dapat direalisasikan.

Studi Intensitas Cahaya Dan Cendawan Mikoriza Arbuskula Pada Permudaan Alam Ramin (Gonystylus Bancanus (Miq.) Kurz) (Study on Arbuscular Mycorrhizal Fungi and Light Intensity to the Natural Regeneration of Ramin (Gonystylus bancanus (Miq.) Kurz)) Abdurrani Muin; Yadi Setiadi; Sri Wilarso Budi; Irdika Mansur; Endang Suhendang; Supiandi Sabiham
Jurnal Manajemen Hutan Tropika Vol. 12 No. 3 (2006)
Publisher : Institut Pertanian Bogor (IPB University)

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The objective of this research is to find out the early information of optimum light intensity and highest mycorrhizal colonization on natural Ramin seedling which it includes in semitolerant plant. The research was conducted in Ramin Natural Forest of Sungai Pelunjung Labai, Sanggau District, West Kalimantan for a year. The results of the research show that there are correlations between light intensity with mycorrhizal colonization. Ramin seedling which grown under the light intensity 3190 – 9500 lux have high mycorrhizal colonization and their growth better than the other treatment. Meanwhile Ramin seedling which grown in closed area or in open area with light intensity less than 1670 lux and more than 10840 lux respectively have lower mycorrhizal colonization and their growth was lower.Key words: Ramón seedling (G. bancnus), Light intensity and Mycorrhizal Fungi

Land rehabilitation of post-mining must be done with reforestation. Reforestation success in post-mining revegetation should to refer the characteristics of natural forests. The success of the reforestation is expected to reach a climax forest ecosystem. How much time is needed to achieve the desired condition (success reforestation), in this case described as the age of achievement expectations of reforestation success to reach a climax forest ecosystem (the basalt area). The research is aim Nining Puspaningsih; Kukuh Murtilaksono; Naik Sinukaban; I Nengah Surati Jaya; Yadi Setiadi
Forum Pasca Sarjana Vol. 33 No. 4 (2010): Forum Pascasarjana
Publisher : Forum Pasca Sarjana

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Land rehabilitation of post-mining must be done with reforestation. Reforestation success in post-mining revegetation should to refer the characteristics of natural forests. The success of the reforestation is expected to reach a climax forest ecosystem. How much time is needed to achieve the desired condition (success reforestation), in this case described as the age of achievement expectations of reforestation success to reach a climax forest ecosystem (the basalt area). The research is aimed to predict reforestation success age. The study used regression analysis for determining the reforestation success age in mining area. The measure used to determining the reforestation success age is basalt area (LBDS) of natural forests. Mathematically it can be summarized to LBDS = f (age). The study found the age of achievement expectations of reforestation success is 75 years. Over the 75 years when the efforts to improve, protect and enhance forest functions are be done well, consistently, and even continued to rise, certainly reforestation success will be achieved, or even faster. Key words: rehabilitation, mining area, reforestation, basalt area, reforestation success age

Corporate Identity Sygma Creative Media Corporation Yadi Setiadi
Jurnal Inovasi Komunikasi Volume 1, No. 1, September 2023, Jurnal Inovasi Komunikasi (JIKOM)
Publisher : UPT Publikasi Ilmiah UNISBA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29313/jikom.v1i1.2620

Abstract. Corporate identity is the important element for a company, because identity is an external display of the company that will first be seen by the public, so that a company will be judged well or not very dependent on the identity displayed. This research was conducted to determine the motivating factors of change in Corporate Identity at PT Sygma Creative Media Corporation, what elements of identity have changed the objectives to be achieved and what strategies are used in communicating a new identity to the public. The theory used in this research is organizational culture of using qualitative research methods with a case study approach. The research findings show that the reason that drives the change in corporate identity at PT Sygma Creative Media Corporation is the decline in company turnover, market changes, the rapid development of the digital era, as well as changes in business orientation from publishing to creative companies. The reasons for some elements of corporate identity such as names, logos, buildings, services, work culture and others underwent changes due to better adjust to the character and creative culture. This is, in an effort to achieve the desired goals such as survival, rebranding, increased turnover and business expansion. Despite various internal and external challenges, but with the communication strategy adopted, Sygma new corporate identity has succeeded in bringing Sygma back from adversity. Abstrak. Corporate identity merupakan salah satu elemen penting bagi sebuah perusahaan, sebab identitas merupakan tampilan jati diri sebuah perusahaan yang pertama kali akan dilihat oleh khayalak, sehingga sebuah perusahaan akan dinilai baik atau tidak sangat bergantung pada identitas yang ditampilkan. Penelitian ini dilakukan untuk mengetahui faktor-faktor pendorong terjadinya perubahan Corporate Identity pada PT Sygma Creative Media Corporation, elemen identias apa saja yang mengalami perubahan, tujuan yang ingin dicapai dan strategi apa saja yang digunakan dalam mengomunikasikan identitas yang baru kepada khalayak. Teori yang digunakan dalam penelitian ini adalah budaya organisasi dengan menggunakan metode penelitian kualitatif dengan pendekatan studi kasus. Hasil temuan penelitian menunjukkan bahwa alasan yang mendorong perubahan corporate identity pada PT Sygma Creative Media Corporation adalah adanya penurunan omset perusahaan, perubahan pasar, pesatnya perkembangan era digital, serta perubahan orientasi bisnis dari publishing menjadi perusahaan kreatif. Adapun alasan beberapa elemen corporate identity seperti nama, logo, bangunan, pelayanan, budaya kerja dan lainnya mengalami perubahan karena untuk lebih menyesuaikan dengan dengan karakter dan budaya kreatif. Hal ini, sebagai upaya untuk mencapai tujuan yang dinginkan seperti survive, rebranding, peningkatan omset dan ekspansi bisnis. Walaupun beragam tantangan yang baik internal maupun eksternal, berkat strategi komunikasi yang diterapkan, corporate identity yang baru Sygma CMC telah berhasil membawa Sygma bangkit dari keterpurukan.

Perbaikan Pertumbuhan dan Kualitas Tanaman Lidah Buaya di Tanah Gambut dengan Aplikasi Mikoriza Arbuskula dan Pemupukan Iwan Sasli; Sudirman Yahya; , Sudradjat; Yadi Setiadi; , Sudarsono
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 36 No. 3 (2008): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

This research was aimed at studying the effectiveness of mycorrhiza, inorganic and organic fertilizer (fish and shrimp waste) on growth, yield and quality of Aloe in peat soil. The study was conducted on peat area, North Pontianak, West Kalimantan. Mycorrhizal application levels (without mycorrhiza, Mycofer and mycorrhizal from pineapple's rhizosphere) were as main-plot. The inorganic fertilizer (composition of N:P:K:Mg) rates (without inorganic fertilizer; 5 : 4 : 7.5 : 2.5 g/plant; 10 : 8 : 15 : 5 g/plant; and 20 : 16 : 30 : 10 g/plant) were as sub-plot. Organic fertilizers: (fish; shrimp; fermented fish; and fermented shrimp wastes) were as sub-sub plot. The observed variables were: leaf width, leaf length, leaf fresh weight, plant dry weight, and nutrient uptake (N, P, K, Mg). The results showed that mycorrhizal application improved growth performance and increased N, P, Mg uptake. The best plant growth performance was achieved by N : P: K : Mg =10 : 8 : 15 : 5 g/plant and fermented shrimp waste treatments. The highest N, P, K, Mg nutrients uptake was achieved by application of fermented organic fertilizer. Combination of mycorrhiza from pineapple's rhizosphere with fermented fish and shrimp waste resulted in higher amino acids content compared to standard cultivation of Aloe vera Center in Pontianak. Key words: Aloe vera, arbuscular mycorrhiza, inorganic fertilizer, organic fertilizer

Pengaruh Inokulasi Dua Spesies Cendawan Mikoriza Arbuskula dan Pemupukan Fosfor terhadap Pertumbuhan dan Serapan Fosfor Tajuk Bibit Kelapa Sawit ( Elaeis guineensis Jacq.) Ade Wachjar; Yadi Setiadi; Ninin Yunike
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 30 No. 3 (2002): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The objective of this experiment was to evaluate the effect of two Arbuscular Mychorrhizal Fungi (AMF) species and phosphorus fertilization on growth and shoot P-uptake of oil palm seedling. Experiment was conducted from September 1999 to March 2000 at Darmaga, the Cikabayan Experiment Station of Bogor Agricultural University. The experiment was arranged in Randomized Bloqk Design with five replications. The first factor was species of AMF. consisted of without AMF. inoculation with Glomus aJlJlreJlatum (OG-I05) and inoculation with Glomus manihotis (INDO-I). The secondfactor was dosage of phosphorus consisted of 0, 0.577, 1.154 and 1.734 g P/seedling.The Arbuscular Mycorrhizal Fungi did not increase height of seedling, leaves total (except on leaves total at 28 weeks after planting), shoot biomass, total biomass. and shoot P-uptake compare to the control. Shoot P-uptake was significantly decreased on seedling which was inoculated with G. manihotis compare to inoculated G. aJlJlreJlatum and control. Phosphorus fertilizer and it's interaction with species of AMF did not give any influence on growth and shoot P-uptake of the oil palm seedling. Keywords.. Mycorrhizal fungi. Phosphorus fertilization, Oil palm

Pengaruh Pupuk Organik dan Intensitas Naungan terhadap Pertumbuhan Bibit Kopi Robusta (Coffee canephora Pierre ex Froehner) Ade Wachjar; Yadi Setiadi; Lies Wahyuni Mardhikanto
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 30 No. 1 (2002): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The experiment was aimed at study the effect of organic fertilizer and shading inetnsity on yhe growth of Robusta coffee seedling. Seven month old seedling of hybrid variety of BP 42 and BP 358 crossing were used in the experiment was conducted at Cikabayan Experimental Station Bogor Agriculture University, from July 2000 to January 2001. The experiment was arranged in split plot dessign with three replications. the main plot was shading intensity cinsisted of 25% (N1), 50% (N2), 75% (N3), and 100% (N4) shade. The sub plot was organic fertilizer consisting of 4 g EMAS + 1/2 dosage of inorganic fertilizier (d.i.f), 4 ml EM4 + 1/2 d.i.f (P2), 4 g OST + 1/2 d.i.f(P3), 20 ml Soils Plus + 1/2 d.i.f(P4) and 1 dosage of inorganic fertilizer (P5). Organic fertilizer affected growth, as shown by height and stem diameter of seedling at early period of experiment and shoot biomass at the end of experiment compared to one effect on all variable during the experiment. Keyword : Coffee, Shading, Oerganic fertilizer

PENGARUH DOSIS INOKULUM CENDAWAN MIKORIZA ARBUSKULA (GIGASPORA ROSEA) DAN PUPUK NITROGEN TERHADAP PERTUMBUHAN BIBIT KOPI ROBUSTA Ade Wachjar; Yadi Setiadi; Tirsa Rachma Hastuti
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 26 No. 2 (1998): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The experiment was aimed to study the effect of Gigaspora rosea inoculant and nitrogen fertilizer on the growth of coffee Robusta seedling. Coffee seedling which were used came from seedling of hybrid variety from BP 42 and BP 358 crossing, age 1 month. Micorrhiza fungi inoculations which were used came from Gigaspora rosea species. The experiment was conducted at Sukamantri Experiment Station Bogor Agriculture University, from December 1996 to August 1997. The experiment was arranged in Randomized Block Design with three replications. The first factor was dosage of micorhiza inoculation, consisted of 0, 5, 10 and 15 g/seedling. The second factor was dosage of nitrogen consisted of 0, 1.5, 3.0 and 4.5 g/seedling. Fungi inoculation treatment in the dosage 15 g/seedling showed the highest infection percentage but can not increase the growth of coffee seedling. Fungi inoculant in the dosage 5 g/seedling gave the best growth level, showed by variety height of seedling, trunk diameter; leaves total and leaves area, shoot and root biomass, compare to the other fungi inoculation dosages. The highest level of nitrogen in leaf was found in the dosage 4.5 g/seedling. Fungi inoculation in the dosage 5 g/seedling and nitrogen fertilizer in the dosage 3 g/seedling gave the highest level of leaves area and shoot biomass, compare to the other treatment combinations.

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