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All Journal Journal of Tropical Soils Journal of Regional and City Planning Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat Jurnal Risalah Kebijakan Pertanian dan Lingkungan Jurnal Pusat Inovasi Masyarakat
Hermanu Widjaja, Hermanu
Department Of Soil Science And Land Resources, Faculty Of Agriculture, Bogor Agricultural University. Jln Meranti, Darmaga, Bogor 16680, Indonesia
Agriculture, Biological Sciences & Forestry Humanities Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Economics, Econometrics & Finance Environmental Science Social Sciences Transportation

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Spatial Autocorrelation on Public Facility Availability Index with Neighborhoods Weight Difference Munibah, Khursatul; Widiatmaka, Widiatmaka; Widjaja, Hermanu
Journal of Regional and City Planning Vol 29, No 1 (2018)
Publisher : The ITB Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1036.202 KB) | DOI: 10.5614/jrcp.2018.29.1.2

Abstract

Abstract. The level of regional development  is marked by high availability of public facilities, such as  education, health, economic, social facilities and their accessibility. A higher of index of public facility availability means a region can support human activities well, including the economic sector. Spatial patterns  of  public facility availability in Cianjur Regency were  analized by global and local spatial autocorrelation  based on the Moran’s index and the local indicator spatial association (LISA) index, respectively. A spatial weighted matrix (wij) for Moran’I and LISA  calculated based on nearest neighbor, neighbor boundary length and neighbor distance. The result showed that differences in the spatial weighted matrix of Moran’s  index does not affect the spatial pattern but they do affect the Moran’s I values for nearest neighbor, neighbor boundary length and neighbor distance, at 0.30; 0.22 and 0.33, respectively. Differences in the spatial weighted matrix of LISA index showed that 97% of districts have the same scatter plot and only 3% of districts have different scatter plot. The spatial pattern type of public facility evailability in Cianjur Regency is cluster where  the nothern Cianjur cluster is in HH category and the central-southern Cianjur cluster is in the LL category.Keywords. LISA index, Moran’s index, spatial pattern, spatial weighted matrix.Abstrak. Tingkat perkembangan wilayah ditandai dengan ketersediaan fasilitas umum yang tinggi seperti fasilitas pendidikan, kesehatan, ekonomi sosial dan aksessibilitas. Indeks ketersediaan fasilitas umum yang tinggi dapat mendorong aktivitas manusia yang baik, termasuk dalam sektor ekonomi. Pola spasial dari indeks ketersediaan fasilitas umum di Kabupaten Cianjur dianalisis dengan global dan local spasisl autokorelasi yang dihitung masing-masing berdasarkan pada Indeks Moran dan indeks LISA (local indicator spatial association). Bobot spasial yang digunakan dalam perhitungan global dan lokal spasial autokorelasi adalah nearest neighbor,  neighbor boundary length and neighbor distance. Hasil menunjukkan bahwa perbedaan bobot spatial pada global spatial autocorrelation tidak memberikan pengaruh terhadap pola spasial tetapi berpengaruh pada nilai Moran Index yaitu 0.30; 0.22 and 0.33 masing-masing untuk nearest neighbor, neighbor boundary length dan neighbor distance. Perbedaan bobot spasial di local autokorelasi menunjukkan bahwa 97% kecamatan di Kabupaten Cianjur memiliki scatter plot yang sama dan hanya 3% kecamatan memiliki scatter plot yang berbeda. Pola spasial ketersediaan fasilitas umum di Kabupaten Cianjur adalah kluster dimana kluster Cianjur Utara dengan kategori HH dan kluster Cianjur Tengah-Selatan dengan kategori LL.  Kata kunci. Indeks LISA, indeks Moran, pola spasial, bobot spasial
Spatial Autocorrelation on Public Facility Availability Index with Neighborhoods Weight Difference Khursatul Munibah; Widiatmaka Widiatmaka; Hermanu Widjaja
Journal of Regional and City Planning Vol. 29 No. 1 (2018)
Publisher : The Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jrcp.2018.29.1.2

Abstract

Abstract. The level of regional development  is marked by high availability of public facilities, such as  education, health, economic, social facilities and their accessibility. A higher of index of public facility availability means a region can support human activities well, including the economic sector. Spatial patterns  of  public facility availability in Cianjur Regency were  analized by global and local spatial autocorrelation  based on the Moran's index and the local indicator spatial association (LISA) index, respectively. A spatial weighted matrix (wij) for Moran'I and LISA  calculated based on nearest neighbor, neighbor boundary length and neighbor distance. The result showed that differences in the spatial weighted matrix of Moran's  index does not affect the spatial pattern but they do affect the Moran's I values for nearest neighbor, neighbor boundary length and neighbor distance, at 0.30; 0.22 and 0.33, respectively. Differences in the spatial weighted matrix of LISA index showed that 97% of districts have the same scatter plot and only 3% of districts have different scatter plot. The spatial pattern type of public facility evailability in Cianjur Regency is cluster where  the nothern Cianjur cluster is in HH category and the central-southern Cianjur cluster is in the LL category.Keywords. LISA index, Moran's index, spatial pattern, spatial weighted matrix.Abstrak. Tingkat perkembangan wilayah ditandai dengan ketersediaan fasilitas umum yang tinggi seperti fasilitas pendidikan, kesehatan, ekonomi sosial dan aksessibilitas. Indeks ketersediaan fasilitas umum yang tinggi dapat mendorong aktivitas manusia yang baik, termasuk dalam sektor ekonomi. Pola spasial dari indeks ketersediaan fasilitas umum di Kabupaten Cianjur dianalisis dengan global dan local spasisl autokorelasi yang dihitung masing-masing berdasarkan pada Indeks Moran dan indeks LISA (local indicator spatial association). Bobot spasial yang digunakan dalam perhitungan global dan lokal spasial autokorelasi adalah nearest neighbor,  neighbor boundary length and neighbor distance. Hasil menunjukkan bahwa perbedaan bobot spatial pada global spatial autocorrelation tidak memberikan pengaruh terhadap pola spasial tetapi berpengaruh pada nilai Moran Index yaitu 0.30; 0.22 and 0.33 masing-masing untuk nearest neighbor, neighbor boundary length dan neighbor distance. Perbedaan bobot spasial di local autokorelasi menunjukkan bahwa 97% kecamatan di Kabupaten Cianjur memiliki scatter plot yang sama dan hanya 3% kecamatan memiliki scatter plot yang berbeda. Pola spasial ketersediaan fasilitas umum di Kabupaten Cianjur adalah kluster dimana kluster Cianjur Utara dengan kategori HH dan kluster Cianjur Tengah-Selatan dengan kategori LL.  Kata kunci. Indeks LISA, indeks Moran, pola spasial, bobot spasial
KARAKTERISTIK, KLASIFIKASI TANAH, DAN PERTUMBUHAN TANAMAN JATI (Tectona grandis Linn f.) Var. UNGGUL NUSANTARA DI CIAMPEA, KABUPATEN BOGOR - Widiatmaka; Akhmad Mediranto; Hermanu Widjaja
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol. 5 No. 1 (2015): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Graduate School Bogor Agricultural University (SPs IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.5.1.87

Abstract

Teak (Tectona grandis Linn f.) produce one of the most desirable wood in the world. Nowadays, fast growing teak resulting from genetically engineered teak have been available. This study aims to look at the relationship between land characteristics and soil classification with vegetative growth of “Unggul Nusantara” varieties of teak. The study was conducted in Ciampea, Bogor Regency. Soil properties were analyzed from three profiles, while the vegetative growth of teak was measured from 2.5-3 years old teak planted on those land. The diversity of soil properties on the profiles were function of the difference of soil parent material as well as its position on the slopes. Three soil profiles of P-1, P-2, and P-3, lying from upslope to the downslope, were classified respectively as Typic Paleudalf, very fine, mix, active, isohipertermic; Typic Dystrudept, very fine, mix, active, isohipertermic; and Typic Hapludult, very fine, mix, semi-active, isohipertermic. Soil of the three profiles were capable of supporting the growth of teak varieties of “Unggul Nusantara”. The best grown plant was found on the profile P-1 in the upslope, followed by the plant on the profile P-3 in the downslope, and then the plants on land above the P-2 in the middle slope. Nevertheless, the quality of the teak harvest produced in the three profiles can be categorized as low category. Soil with lime sediment parent material that has a high pH and base saturation is able to provide better growth for plants teak varieties of “Unggul Nusantara”. Keywords: soil profile, slope, soil chemical and soil physical characteristics, vegetative performance
Pemetaan Saluran Irigasi sebagai Upaya Penyediaan Air bagi Kebutuhan Pertanian (Studi Kasus: Desa Sindangsari, Kecamatan Ciranjang, Kabupaten Cianjur) Fifi Fata'tiatul Hidayah; Lailatul Qodriyah Agne Verawati; Hermanu Widjaja
Jurnal Pusat Inovasi Masyarakat (PIM) Vol. 2 No. 4 (2020): Juni 2020
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat, Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (519.601 KB)

Abstract

Irrigation Network Rehabilitation activities are the main supporting activities in the agricultural business by providing irrigation water for the realization of food sovereignty, particularly rice. Lowland rice is the principal agricultural commodity in Sindangsari village, Cianjur. More than 50 per cent of this village's rice fields are irrigated. Unfortunately the current irrigation conditions are classified as dry due to drought, thus inhibiting rice production. In addition to being dry, there are also many points of garbage accumulation that pollute the water flow and even obstruct the water flow. This activity aims at mapping the condition of irrigation canals in Sindangsari village. The irrigation channel map has been successfully prepared and approved by the Cianjur Regency Regional Planning Agency and the Ciranjang District Water Resources Management Office, so that more policies on irrigation issues in the area can be taken into consideration. Key words: irrigation, network rehabilitation, rice, rice field
Pemanfaatan Limbah Bonggol Jagung Menjadi Pakan Ternak (Silase) di Desa Sendangmulyo, Kecamatan Bulu, Kabupaten Rembang Brilianza Azharul Mujahidin; Marfuah Marfuah; Tiara Tiara; Annisa Nur Hidayah; Yulisa Alfiani; Diah Nailussaada; Hermanu Widjaja
Jurnal Pusat Inovasi Masyarakat (PIM) Vol. 4 No. 1 (2022): April 2022
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat, Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4239.925 KB) | DOI: 10.29244/pim.4.1.26-31

Abstract

Desa Sendangmulyo merupakan salah satu desa yang berada di Kecamatan Bulu Kabupaten Rembang yang terletak di perbatasan Kabupaten Blora. Salah satu komoditas pertanian yang banyak dibudidayakan di Desa Sendangmulyo adalah jagung. Akan tetapi pemanfaatan komoditas jagung ini umumnya masih terbatas pada bijinya saja, sedangkan bonggolnya dibuang dan justru menjadi permasalahan karena mencemari lingkungan. Melihat adanya permasalahan ini, kelompok KKN-T IPB Rembang mengadakan webinar sekaligus praktek pembuatan silase berbahan bonggol jagung. Tujuan program ini adalah untuk memberikan pemahaman kepada masyarakat Desa Sendangmulyo terkait pemanfaatan limbah bonggol jagung menjadi silase. Webinar dilaksanakan secara online melalui platform zoom meetings untuk masyarakat umum kemudian dilanjutkan dengan praktek pembuatan silase bersama-sama untuk masyarakat Desa Sendangmulyo. Bahan yang digunakan dalam pembuatan silase yaitu bonggol jagung dan rumput gajah yang sudah di cacah, dedak, molase, serta air. Silase yang baik dapat dilihat dari karakteristik fisik seperti warna, tekstur, aroma, dan keberadaan jamur. Berdasarkan hasil pengamatan silase yang dibuat memiliki warna cokelat terang, tidak berair dan bau yang sedikit asam tetapi masih terdapat sedikit jamur sehingga hasil silase dapat digolongkan kurang baik. Pelaksanaan webinar dan praktik secara langsung pembuatan pakan ternak silase dari bonggol jagung mendapat respon positif dari peserta webinar dan masyarakat Desa Sendangmulyo. Kekurangan dari program ini yaitu dalam pelaksanaan praktik pembuatan silase jumlah peserta terbatas karena masa PPKM sehingga penyampaian informasi belum tersampaikan secara luas.
TEKNOLOGI REKLAMASI LAHAN BEKAS TAMBANG BAUKSIT MENGGUNAKAN SEEDBALL TANAMAN ADAPTIF DAN KOMPOS DIPERKAYA FABA Putri, Aulya; Suwardi, Suwardi; Suryaningtyas, Dyah Tjahyandari; Oktariani, Putri; Widjaja, Hermanu; Randrikasari , Octaviana
RISALAH KEBIJAKAN PERTANIAN DAN LINGKUNGAN Rumusan Kajian Strategis Bidang Pertanian dan Lingkungan Vol 11 No 1 (2024): April
Publisher : Pusat Studi Pembangunan Pertanian dan Pedesaan (PSP3) dan Ilmu Pengelolaan Sumberdaya Alam dan Lingkungan (PSL)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jkebijakan.v11i1.53149

Abstract

Bauxite is one of the most mined minerals in the world and plays an important role as a raw material for aluminum production. The implementation of bauxite downstream policy has an impact on the expansion of bauxite mining area and bauxite post-mining land. The expansion of mining activities can cause an increase in the impact of environmental damage, one of which is the emergence of critical land in post-mining areas. Bauxite post-mining land often experiences problems with soil physical and chemical properties, which cause soil unable to support growth and fulfill plant nutrition needs. Alternatives that can be implemented is the use of adaptive plant seedball and Fly Ash-Bottom Ash (FABA) enriched compost utilization as ameliorant material. Post-mining land reclamation technology is the key to achieve successful reclamation and support the optimization of sustainable bauxite downstream programs in Indonesia.
Program Sadaya Langgar: Meningkatkan Keterampilan Budidaya Kelor dan Kawista untuk Ketahanan Pangan di Desa Langgar, Rembang Septiawati, Indah Zahra; Putri, Cindy Yuliani; Zulmi, Fathiah Zahrani; Salamah, Eneng Lulu; Kurniawan, Muhammad Fabio Rayhan; Yuwendri, Dhanny Fadillah Rafiuh Drajad; Elysia, Laili; Widjaja, Hermanu; Akmal Maulana, Muhammad
Jurnal Pusat Inovasi Masyarakat Vol. 7 No. 1 (2025): April 2025
Publisher : Direktorat Pengembangan Masyarakat Agromaritim, Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpim.7.1.89-101

Abstract

The Sadaya Langgar program aims to enhance the knowledge and skills of the community in propagating and cultivating moringa and kawista plants, while also improving village food security and optimizing land use. The program targets the Women's Farming Group (KWT) and the broader community of Langgar Village. Its implementation consists of three stages: socialization, demonstration, and monitoring. Activities include techniques for propagation, planting, and the utilization of plant products. The program has successfully increased the community's understanding of the importance of moringa as a high-nutrient food source and kawista as an herbal remedy. As a result, the community, particularly KWT members, has shown improvements in cultivation skills and the utilization of these plants, positively impacting food security and the village's economic well-being. The Sadaya Langgar program not only enhances technical skills in cultivation but also contributes to overall community health through educational activities about the nutritional content of moringa.
From Rice to Oil Palm: The Historical Evolution of Peatland Reclamation in the Berbak Delta, Indonesia Widjaja, Hermanu
JOURNAL OF TROPICAL SOILS Vol. 30 No. 3: September 2025 (in Progress)
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The Berbak Delta in Jambi Province, Indonesia, underwent large-scale peatland reclamation in the 1970s to develop rice fields through a transmigration program. Initially, rice production averaged 3–4 tons/ha but declined to less than 1 ton/ha due to the conversion of peat soils into acid sulfate soils. This decline was attributed to soil acidification resulting from pyrite oxidation, leading to a decrease in soil pH. Currently, rice cultivation persists in areas near rivers influenced by tidal brackish water. In response to declining yields, a technological package for acid sulfate soil management, including canal water management, pH improvement, and fertilizer application, was introduced. This increased rice yields to over 5 tons/ha in a 100-ha pilot project in 2005. However, by 2008, farmers began shifting to oil palm plantations due to higher income potential. This study examines the land-use change from rice fields to oil palm plantations and its impact on the livelihoods of the Berbak Delta communities. Land cover change analysis from 2013 to 2023 revealed a decrease in rice fields from 58.30% to 25.79% and an increase in oil palm plantations from 15.37% to 55.70%. Oil palm cultivation has demonstrated sustainability on reclaimed acid sulfate soils, leading to economic prosperity through improved infrastructure, housing, and increased private vehicle ownership.
Penerapan Inovasi Media Zeoponik Berbasis Zeolit untuk Peningkatan Kualitas Pembibitan Tanaman Hortikultura di Kecamatan Mojosongo, Boyolali Tjahyandari Suryaningtyas1, Dyah; Oktariani, Putri; Widjaja, Hermanu; Randrikasari, Octaviana; Suwardi
Agrokreatif: Jurnal Ilmiah Pengabdian kepada Masyarakat Vol. 11 No. 3 (2025): Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agrokreatif.11.3.496-506

Abstract

The "Dosen Pulang Kampung" (Lecturer Goes Home) program is a community service effort conducted by IPB University aimed at contributing knowledge and technology to rural communities. In this activity, the authors introduced Zeoponic planting media to horticultural farmers in Mojosongo District, Boyolali. Zeoponic, a zeolite-based planting medium, is designed to address the high electrical conductivity (EC) problems in traditional planting media, which often hinder nutrient absorption. With zeolite content, Zeoponic has a high cation exchange capacity (CEC), maintaining EC and moisture stability, thus supporting optimal seedling growth. The activity was carried out in three stages: a theoretical session explaining the concept and benefits of the medium, a demonstration of its preparation directly by the farmers, and an evaluation through discussions as well as pre-test and post-test to assess participants’ knowledge improvement. A total of 30 farmers from local farmer groups in Mojosongo participated in the program. Results showed that Zeoponic could improve the quality of horticultural plant seedlings and has great potential for adoption by local farmers. This program is expected to support sustainable agriculture and enhance the welfare of farmers.
Co-Authors Akhmad Mediranto Akmal Maulana, Muhammad Annisa Nur Hidayah Brilianza Azharul Mujahidin Diah Nailussaada Dyah Tjahyandari Suryaningtyas Elysia, Laili Fifi Fata'tiatul Hidayah Khursatul Munibah Kurniawan, Muhammad Fabio Rayhan Lailatul Qodriyah Agne Verawati Marfuah Marfuah Oktariani, Putri Putri, Aulya Putri, Cindy Yuliani Randrikasari , Octaviana Randrikasari, Octaviana Salamah, Eneng Lulu Septiawati, Indah Zahra Suwardi Suwardi Suwardi Tiara Tiara Tjahyandari Suryaningtyas1, Dyah Widiatmaka Yulisa Alfiani Yuwendri, Dhanny Fadillah Rafiuh Drajad Zulmi, Fathiah Zahrani