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Distribusi Kelas Diameter Pohon pada Berbagai Tipe Veget Asi di Gunung Salak, Bogor, Jawa Barat Muhammad Wiharto; Cecep Kusmana; Lilik Budi Prasetyo; Tukirin Partomihardjo
Jurnal Ilmu Pertanian Indonesia Vol. 13 No. 2 (2008): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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The research objective was to study tree vegetation structure based on diameter class distribution at some vegetation types on Salak Mountain. Sample was taken at north, south, east, and west facing slope of Salai Mountain using line transect. Systematic sampling with random start was used to lay the transetcs. Measuring stem diameter at breast height was done in order to study the tree diameter class distribution. Non-parametric U Man Whitney statistic was used to know whether there was a different in number of individual at all diameter class in each vegetation type. At mix forest and plantation forest, the tree diameter class distribution forming J curve shape. At bamboo forest, the individual number increase at the highest class diameter. The number of individual trees ware highest at mix forest and lowest at bamboo forest.Keywords: diameter class, J reserve curve, mount salak, vegetation type

The research objective was to study tree's vegetation structure based on diameter class distribution on varians vegetation types at Salak Mountain. Samples were taken at north, south, east, and west facing slope of Salak Mountain using line transect. Systematic sampling with random start was used to locate the transetcs. Measuring stem diameter at breast height was done in order to study the tree diameter class distribution. Non parametric U Man Whitney statistic was used to know whethe Muhammad Wiharto; Cecep Kusmana; Lilik Budi Prasetyo; Tukirin Partomihardjo
Forum Pasca Sarjana Vol. 32 No. 4 (2009): Forum Pascasarjana
Publisher : Forum Pasca Sarjana

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The research objective was to study tree's vegetation structure based on diameter class distribution on varians vegetation types at Salak Mountain. Samples were taken at north, south, east, and west facing slope of Salak Mountain using line transect. Systematic sampling with random start was used to locate the transetcs. Measuring stem diameter at breast height was done in order to study the tree diameter class distribution. Non parametric U Man Whitney statistic was used to know whether there was a different in number of individual at all diameter class in each vegetation type. At mix forest and plantation forest, the tree diameter class distribution forming J curve shape. At bamboo forest, the individual number increase at the highest class diameter. The number of individual trees were highest at mix forest and lowest at bamboo forest. Key words: Mount Salak, Reverse J Curve, tree diameter class, vegetation type

One of the important factors for the management activity at Salak Mountain is the presence of Salak Mountain’s vegetation classification, which until recently has never been done. The research objectives were to classify the variety of vegetation types at Salak Mountain. Vegetation sampling was made with systematic sampling with random start. Vegetation type at alliance level was determined with vegetation ordination. Three vegetation alliances can be extracted from the ordination. These allianc Muhammad Wiharto; Cecep Kusmana; Lilik Budi Prasetyo; Tukirin Partomihardjo
Forum Pasca Sarjana Vol. 31 No. 1 (2008): Forum Pascasarjana
Publisher : Forum Pasca Sarjana

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One of the important factors for the management activity at Salak Mountain is the presence of Salak Mountain’s vegetation classification, which until recently has never been done. The research objectives were to classify the variety of vegetation types at Salak Mountain. Vegetation sampling was made with systematic sampling with random start. Vegetation type at alliance level was determined with vegetation ordination. Three vegetation alliances can be extracted from the ordination. These alliances are Shcima walichii-Pandanus punctatus/ Cincora sinensis forest alliance; Glocidion apus-Mallotus blumeana/Chima sinensis forest alliance; and Pinus merkusii-Dysoxiylum arborescens/Dysoxiylum dichotoma forest alliance. Vegetation alliances are forming mainly because of their similarity in their structure, composition, and physiognomy of vegetation. The abiotic factors that consistently differentiate alliance 1 with the other alliances are N total, dust content of the soil, and slope. P soil’s content is the abiotic factor that consistently differentiates alliance 2 with the other alliances, while C organic soil’s content and cation exchange capacity of the soil are the abiotic factors that consistently differentiate alliance 3 with the other alliances. There are five vegetation association at allinace 1, six alliance 2 and seven at alliance 3. Each dominant spesies has uniquely preference to abiotic factor in their distribution at Gunung Salak. Stand structures of alliance 1 and 3 forming J reverse curve. Key words: association, ordination, Salak Mountain, vegetation alliance, vegetation classification

The aims of this research is to study various vegetation associations on Mount Salak. Sampling was done by using systematic sampling with random start. Cluster analysis was used to determine the vegetation association. The relationship between abiotic factors and vegetation association was analyzed using Chi-Square statistic. There are 5 vegetation associations at alliance 1, 6 associations at alliance 2, and 7 associations at alliance 3. Calcium, phosphorus content of soil, soil’s texture a Muhammad Wiharto; Cecep Kusmana; Lilik Budi Prasetyo; Tukirin Partomihardjo
Forum Pasca Sarjana Vol. 31 No. 3 (2008): Forum Pascasarjana
Publisher : Forum Pasca Sarjana

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The aims of this research is to study various vegetation associations on Mount Salak. Sampling was done by using systematic sampling with random start. Cluster analysis was used to determine the vegetation association. The relationship between abiotic factors and vegetation association was analyzed using Chi-Square statistic. There are 5 vegetation associations at alliance 1, 6 associations at alliance 2, and 7 associations at alliance 3. Calcium, phosphorus content of soil, soil’s texture and slope direction are the abiotic factors that affected the association at alliance 1. Calcium and phosphorus content of soil, and minimum altitude of plot are abiotic factors that affected the association at alliance 2. Phosphorus content of soil and minimum altitude plot are the abiotic factors that affected the association at alliance 3. Key words: Mount Salak, vegetation association, cluster analysis, chi-square statistic

Dekomposisi Termal Pirolisis terhadap Rendemen dan Komposisi Senyawa Kimia dalam Asap Cair Kulit Buah Kakao Mohammad Wijaya; Muhammad Wiharto; Army Auliah
JC-T (Journal Cis-Trans): Jurnal Kimia dan Terapannya Vol 3, No 2 (2019)
Publisher : State University of Malang or Universitas Negeri Malang (UM)

Kakao yang diperoleh dari perkebunan kakao menghasilkan limbah kakao yang dibuang dan berwana hitam pada waktu yang lama akan mengalami pembusukan, Padahal memiliki potensi yang cukup besar. Dengan penggunaan teknologi pirolisis, analisis kulit buah kakao yang berasal dari Kabupaten Enrekang untuk kandungan lignin sebesar 45,61 %, selulosa 37,61 %, hemiselulosa 6,40 %, dan lainnya sebesar 10,38 %. Hasil pembakaran menghasilkan asap cair kulit buah kakao ke dalam destila dan arang. Dalam penelitian ini digunakan suhu pirolisis 114-514 °C. Rendemen asap cair kulit buah kakao Kabupaten Enrekang pada suhu pirolisis 114 °C sebesar 8,04 % selama 88 menit, dan pada suhu pirolisis 214 °C sebesar 28,6 2% dengan waktu selama 40 menit, selanjutnya pada suhu pirolisis 314 °C sebesar 27,65 % dengan waktu selama 83 menit, dan suhu pirolisis 414 °C sebesar 25,08 % dengan waktu selama 45 menit, akhirnya suhu pirolisis 514 °C sebesar 8,04 % dengan waktu selama 88 menit. Analisis GC MS untuk asap cair kulit buah kakao adalah asam karbamat, asam asetat, 1H-Pirol, tert-Butilakrilat, propane diamida, asetamida, n-metil, 1-pentena-2-ol, corilon, 5-valerolakton, 4-metoksifenol, N- metilsuccinimida, siklopropilkarbinol, 2-propilamina, etil metakrilat, 1,2-oksaborol, 2,6-dimetil-metoksifenol, n-amilasetat, sikloheksena karboksilat, 2-proponon, levoglukosan, D-o-asetil, asam heksadekanoat, 1,10-dekadiol, asetiloksi, tetracosaheksaena. Hasil pemisahan senyawa kimia bio aktif dari asap cair kulit buah kakao digunakan untuk memperoleh produk komposisi kimia dengan pengelompokkan senyawa berdasarkan metode PCA.

Persepsi mahasiswa terhadap penggunaan program e-learning berbasis LMS pada Mata Kuliah Teknologi Budidaya Perikanan Amirah Mustarin; Muhammad Wiharto
Seminar Nasional LP2M UNM Prosiding Edisi 4
Publisher : Seminar Nasional LP2M UNM

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The rapid development of information and communication technology has brought major changes in all fields, including the education sector. Educators are required to be able to choose and use various types of existing learning media. One alternative that is potentially used in learning is the e-learning learning method using the learning management system. This study aims to (a) find out the application of the LMS-based E-learning model to improve the quality of learning courses in Aquaculture Technology in the UNM Agricultural Technology Education Study Program. (b) To find out the LMS-based E-learning model for increasing interest in learning courses in Aquaculture Technology in the UNM Agricultural Technology Education Study Program. This research is an "ex-post facto" study conducted in the subject of Aquaculture Technology at the UNM Agricultural Technology Education Study Program. The design of this study is that the variables in this study consist of independent variables, namely the perceptions of students on the use of Learning Management System (X1) E-Learning programs, and one dependent variable, namely Student Learning Interest. Data obtained from observations student interest, and test results during the teaching and learning process are analyzed quantitatively. Student perceptions of the ease of use of the LMS-based E-learning program in the Aquaculture Technology course in the UNM Agricultural Technology Education Study Program are in the high category of 70.59%, the benefits are in the very high category of 85.29% and program acceptance is at very high category of 82.35%. Student interest in the subject of Aquaculture Technology in the UNM Agricultural Technology Education Study Program was in the category of interest of 73.53%.

Earthworm Cultivation by Utilizing Organic and Inorganic Waste: Budidaya Cacing Tanah Dengan Memanfaatkan Limbah Organik dan Anorganik Mustarin, Amirah; Nurmila; Muhammad Wiharto; Kasmawati; Asrijal
Jurnal Sipakatau: Inovasi Pengabdian Masyarakat Volume 2 Issue 1 December 2024: Jurnal Sipakatau
Publisher : PT. Lontara Digitech Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61220/jsipakatau.v1i6.2451

The new paradigm of waste today is that it can be a resource. The concept of waste management is carried out with the 3R concept (reduce, reuse, and recycle). Reuse activities on billboard advertising waste are one form of waste use that can be reused for organic fertilizer production purposes. Efforts to manage solid advertising waste are carried out by the Sikamaseang Group, Maros Baru District, Maros Regency, by utilizing the waste as a container in the production of vermicast (worm waste), which can be used in fish farming activities in ponds. Training and coaching activities for members of the Sikamaseang Group farmer group are carried out actively with demonstration and practice methods involving all program participants. The results of these activities are containers and media for cultivating Lumbricus rubellus worms, which are used as organic fertilizer in fish farming. The knowledge and skills possessed by the participants can be applied to the production of fertilizer needs in fisheries activities in Maros Baru District, Maros Regency. Abstrak Paradigma baru sampah saat ini ialah dapat menjadi sebuah sumber daya. Konsep pengelolaan sampah tersebut dilakukan dengan konsep 3R (reduce, reuse, dan recycle). Kegiatan guna ulang (reuse) pada limbah reklame billboard merupakan salah satu bentuk penggunaan limbah yang dapat dipakai kembali untuk keperluan produksi pupuk organik. Upaya pengelolaan limbah padat advertising dilakukan oleh Kelompok Sikamaseang Kecamatan Maros Baru Kabupaten Maros dengan memanfaatkan limbah tersebut sebagai wadah dalam produksi kascing (limbah cacing) yang dapat digunakan pada kegiatan budidaya ikan di tambak. Kegiatan pelatihan dan pembinaan anggota kelompok tani Kelompok Sikamaseang dilaksanakan secara aktif dengan metode demontrasi dan praktik yang melibatkan seluruh peserta program. Hasil kegiatan tersebut ialah wadah dan media budidaya cacing Lumbricus rubellus yang digunakan sebagai pupuk organik dalam budidaya ikan. Pengetahuan dan keterampilan yang dimiliki perserta dapat diaplikasikan untuk produksi kebutuhan pupuk dalam kegiatan perikanan di Kecamatan Maros Baru Kabupaten Maros.

Edukasi dan Pelatihan Pembuatan Makanan Tambahan Bergizi Untuk Cegah Stunting Nur Rahmah; Indrayani; Muhammad Wiharto; Dewi Puspitasari; Nurmila
Vokatek : Jurnal Pengabdian Masyarakat Volume 3: Issue 2 (Juni 2025)
Publisher : Sakura Digital Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61255/vokatekjpm.v3i2.623

Stunting merupakan masalah gizi kronis yang masih menjadi tantangan besar di Indonesia, khususnya di wilayah pedesaan dan komunitas dengan keterbatasan akses informasi serta asupan gizi yang memadai. Program pengabdian kepada masyarakat ini bertujuan untuk memberikan edukasi dan pelatihan kepada ibu-ibu rumah tangga dalam pembuatan makanan tambahan bergizi menggunakan bahan lokal sebagai upaya pencegahan stunting pada anak usia dini. Kegiatan dilaksanakan melalui metode ceramah interaktif, demonstrasi langsung, dan praktik bersama. Pelatihan pembuatan abon merupakan salah satu alternatif pengolahan ikan yang mudah dilakukan namun membutuhkan inovasi dalam pengolahannya agar dapat diminati oleh anak-anak untuk memenuhi kebutuhan gizi diusia pertumbuhan. Berdasarkan SNI 01-3707-1995, abon merupakan hasil pengolahan yang diolah dengan cara perebusan/pengukusan, penggorengan dan pengepresan atau penirisan minyak. Proses pengolahan bahan baku yang telah ditambahkan bumbu-bumbu untuk meningkatkan cita rasa dan memperpanjang daya simpan akan menjadi sumber pangan yang sehat dan bergizi. Jenis ikan yang dibuat abon adalah ikan gabus yang tinggi kandungan albumin, lebih tinggi dibandingkan daging ayam, sapi atau telur. Hasil kegiatan menunjukkan peningkatan pengetahuan peserta pelatihan mengenai pentingnya gizi seimbang serta keterampilan dalam mengolah bahan pangan lokal menjadi menu sehat bagi anak

A Eksplorasi Limbah Kulit Buah Kakao Wilayah Sulselbar: Analisis Komposisi, Pirolisis, dan Potensinya sebagai Bio-fertiliser Wijaya M., Mohammad; Muhammad Wiharto; Anwar, Muhammad; Muhammad Nur Alam
JST (Jurnal Sains dan Teknologi) Vol. 14 No. 1 (2025): April
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jstundiksha.v14i1.90408

Kakao merupakan komoditas strategis dengan kontribusi ekonomi yang signifikan, namun produksinya menghasilkan limbah kulit buah mencapai 70% dari total bobot, memerlukan pengelolaan berkelanjutan. Penelitian ini bertujuan untuk mengeksplorasi limbah kulit buah kakao (KBK) di wilayah Sulawesi Selatan dan Sulawesi Barat, meliputi analisis lignoselulosa dan unsur hara, karakterisasi hasil pirolisis, dan studi potensi sebagai bahan dasar biofertilizer. Hasil analisis lignoselulosa menunjukkan kandungan lignin pada KBK Kabupaten Luwu 64,72% lebih besar dibandingkan KBK dari Kabupaten Polman 60,67% dan KBK Kab Wajo sebesar 34,06%, serta Kab Sidrap sebesar 44,11%. Analisis GC-MS menunjukkan bahwa senyawa utama yang ditemukan dari asap cair hasil pirolisis dari keempat wilayah adalah asam asetat dengan konsentrasi tertinggi di semua sampel, yang menunjukkan dominasi senyawa asam organik dalam produk pirolisis. Hasil karakterisasi XRD menunjukkan bahwa arang aktif kulit buah kakao memiliki struktur semi-kristalin, yang mendukung kapasitas adsorpsi dan pelepasan nutrisi secara bertahap di dalam tanah. Analisis EDS mengungkapkan komposisi unsur yang kaya, dengan kandungan karbon sebesar 36,58%, oksigen 52,21%, serta elemen hara penting seperti kalium (3,33%), magnesium (0,38%), fosfor (0,17%), dan silikon (0,47%). Kandungan karbon organik yang tinggi dan keberadaan nutrisi makro dan mikro mendukung nilai agronomisnya untuk meningkatkan kesuburan tanah. Potensi kulit buah kakao sebagai biofertilizer semakin diperkuat dengan sifatnya yang ramah lingkungan dan dapat meningkatkan keberlanjutan pertanian. Hasil ini menunjukkan bahwa kulit buah kakao tidak hanya sebagai limbah pertanian tetapi juga memiliki nilai ekonomi tinggi sebagai bahan dasar pupuk organik. Konversi menjadi produk seperti biochar atau bio-compost dapat meningkatkan efektivitasnya dalam mendukung produktivitas tanaman.

Penerapan Teknologi Secara Terpadu dari Pemanfaatan Sampah di Kelompok Usaha Pengelolaan Sampah di Desa Sunggumanai Muhammad Wiharto; Muhammad Anwar; Muhammad Arief Nasutions; Mohammad Wijaya.M; Muhammad Yunus
Jurnal Pengabdian Masyarakat Vol. 4 No. 2 (2025): Oktober : Jurnal Pengabdian Masyarakat
Publisher : Universitas 45 Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30640/abdimas45.v4i2.5050

Currently, the management of abundant natural resources has not been managed optimally, even though if managed by the village community it becomes an opportunity of high economic value. Sunggumanai Village, Pattalasaang District, Gowa Regency consists of agricultural and plantation land. Rice fields consist of several rice fields, horticultural crops, the population of Sunggumanai Village is 2171 people consisting of 902 men and 1269 women with a total of 265 Heads of Families (KK). The Waste Management Business Group (KUPAS) is located in Japing Hamlet, Sunggumanai Village, Gowa Regency, which is one of the land areas with a lot of scattered waste, especially plastic and organic waste in South Sulawesi Province]. Sunggumanai Village to manage plastic waste into chopped plastic in the Village. This business belongs to a business group that was founded in 2023. Currently chaired by Mr. H. Rusli Mishaf, The purpose of implementing this PKM is to provide training and assistance in 1) Increasing knowledge and skills in making gasoline. 2) Introduction of new organic waste charcoal briquettes products to the market. 3) Improvement of charcoal briquettes and organic waste liquid smoke processing techniques through integrated pyrolysis technology. 5) Marketing of charcoal briquettes, organic waste liquid smoke, and compost products based on digital marketing. This relates to the SDGs, namely clean energy utilizing organic waste, and Affordable Climate Change Management by the PKM team.

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