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All Journal Vegetalika Bumi Lestari LaGeografiA Jurnal Arsitektur Lansekap Agrovigor: Jurnal Agroekoteknologi Agrifor : Jurnal Ilmu Pertanian dan Kehutanan agriTECH Gontor AGROTECH Science Journal Jurnal Ilmiah Teknologi Pertanian Agrotechno JURNAL AGRILAND Agrin : Jurnal Penelitian Pertanian Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Indonesian Journal of Computing and Modeling Cakrawala Jurnal Penelitian Sosial Unram Journal of Community Service (UJCS) AGRIC Open Access DRIVERset
Bistok H. Simanjuntak
Universitas Kristen Satya Wacana
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Law, Crime, Criminology & Criminal Justice Mathematics Physics Social Sciences Other

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The Effect of Using Leonardite Mainic Acid as Urea Coater on The Growth And Yield Of Corn (Zea mays) Alexander Julian Pranata; Bistok Hasiholan Simanjuntak
Gontor AGROTECH Science Journal Vol 6, No 1 (2020): June 2020
Publisher : University of Darussalam Gontor, Ponorogo, East Java Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21111/agrotech.v6i1.3593

Abstract

Urea memiliki sifat higroskopis dan mudah mengalami perubahan fisik, sehingga efisiensi pemupukan kurang maksimal. Asam humat leonardit yang digunakan untuk melapisi urea, mampu membuat urea menjadi slow release. Penelitian ini menguji beberapa komposisi antara asam humat dan urea yang bertujuan untuk mengetahui pengaruh pemberian pelapisan dan mencari komposisi terbaik bagi pertumbuhan dan hasil tanaman jagung. Penelitian dilakukan di Dusun Secang, Desa Samban, Kecamatan Bawen, Kabupaten Semarang. Metode yang digunakan dalam penelitian ini adalah Rancangan Acak Kelompok (RAK) dengan lima perlakuan dan lima ulangan. Perlakuan yang diberikan yakni HU1 (100 cc asam humat untuk 25 kg urea), HU2 (100 cc asam humat untuk 50 kg urea), HU3 (100 cc asam humat untuk 75 kg urea), HU4 (100 cc asam humat untuk 100 kg urea), dan HU0 (100 cc asam humat untuk 0 kg urea). Analisis data diolah menggunakan analisis of varian (ANOVA) yang dilanjutkan dengan uji Beda Nyata Jujur (BNJ) dengan selang kepercayaan 95%. Penelitian menunjukan bahwa pemberian perlakuan HU3 memberikan dampak pertumbuhan tertinggi, namun untuk hasil jagung tertinggi dihasilkan oleh pemberian perlakuan HU2.
DESA MANDIRI ENERGI dan ANT (Studi pada Implementasi dan Peran ANT Dalam Mengenalkan Teknologi Biogas Kepada Masyarakat di Desa Lembu, Kecamatan Bancak, Kabupaten Semarang) Rizki Herendra Hasmara Ardi; Bistok Hasiholan Simanjuntak
Cakrawala Jurnal Penelitian Sosial Vol 6 No 1 (2017)
Publisher : Universitas Kristen Satya Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (258.913 KB)

Abstract

Increasing numbers of world population affect the support power of environment. The increasing numbers of energy demand caused by population growth, world oil reserve, emission problem of fossil fuel give depression for every country to produce and use the renewable energy immediately. Trukajaya and partner as social agency has some programs about civil development. One of the programs is biogas unit which has ability to produce gas from the alternatuve energy sources, that is from some kinds of organic waste, such as biomass waste, human waste, and animals waste. This process is a great opportunity to produce alternative energy which can decrease the effect of fossil fuel use. The research titled “Desa Mandiri Energi” has an objective to describe the all actors, and the forms network that has an important role for introducing biogas towards Lembu Village society. Appropriate to the objective achieved, this research uses Describtive Research Method, that is a method used to describe biogas effects toward the behavior of Trukajaya’s target society village. Besides, to review the basic problem,this research uses Qualitative Approach, which uses a research model that produces describtive data about words in verbal or written, and behavior that can be watched from the subjects research This research shows about all actors, and the forms network that has an important role for introducing biogas towards Lembu Village society.
DESA MANDIRI ENERGI dan ANT (Studi pada Implementasi dan Peran ANT Dalam Mengenalkan Teknologi Biogas Kepada Masyarakat di Desa Lembu, Kecamatan Bancak, Kabupaten Semarang) Rizki Herendra Hasmara Ardi; Bistok Hasiholan Simanjuntak
Cakrawala Jurnal Penelitian Sosial Vol 6 No 1 (2017)
Publisher : Universitas Kristen Satya Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (258.913 KB)

Abstract

Increasing numbers of world population affect the support power of environment. The increasing numbers of energy demand caused by population growth, world oil reserve, emission problem of fossil fuel give depression for every country to produce and use the renewable energy immediately. Trukajaya and partner as social agency has some programs about civil development. One of the programs is biogas unit which has ability to produce gas from the alternatuve energy sources, that is from some kinds of organic waste, such as biomass waste, human waste, and animals waste. This process is a great opportunity to produce alternative energy which can decrease the effect of fossil fuel use. The research titled “Desa Mandiri Energi” has an objective to describe the all actors, and the forms network that has an important role for introducing biogas towards Lembu Village society. Appropriate to the objective achieved, this research uses Describtive Research Method, that is a method used to describe biogas effects toward the behavior of Trukajaya’s target society village. Besides, to review the basic problem,this research uses Qualitative Approach, which uses a research model that produces describtive data about words in verbal or written, and behavior that can be watched from the subjects research This research shows about all actors, and the forms network that has an important role for introducing biogas towards Lembu Village society.
Location Determination of Salatiga City Park Potential with Geographic Information System Noviarta Rizky Manik; Bistok Hasiholan Simanjuntak
Indonesian Journal of Computing and Modeling Vol 1 No 2 (2018)
Publisher : Pusat Studi Sistem Informasi dan Pemodelan Mitigasi Tropika

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (530.204 KB)

Abstract

Based on Salatiga Urban Land Use Plan 2010-2030, Salatiga still having lacked 30% of the green open space from its area. The addition of the city park is one of the green open space planning that can support the lack, so the research about Salatiga city park location determination with Geographic Information System (GIS) was as one part of the planning of the city park addition. The purpose of the study is ideal location determine for the city park in Salatiga which it was based on population density, population preferences and city park manager, land characteristics, and government regulation about the green open space. The research method was used the descriptive method through quantitative and qualitative approach by utilizing GIS software, questionnaire, and an interview. The research result showed the city park can be developed in protected areas (especially in urban forest sites) or in cultivation areas. However, the city park development must be in accordance with government regulations, land character and land suitability requirements for the city parks. Potential locations for urban parks in Salatiga city can be distinguished by two categories: 1. Recommended class area with 944,584 ha (16.64% of total area) and 2) Highly Recommended class area with 123.37 ha (2.17% of total area).
Location Determination of Salatiga City Park Potential with Geographic Information System Noviarta Rizky Manik; Bistok Hasiholan Simanjuntak
Indonesian Journal of Computing and Modeling Vol 1 No 2 (2018)
Publisher : Pusat Studi Sistem Informasi dan Pemodelan Mitigasi Tropika

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (530.204 KB)

Abstract

Based on Salatiga Urban Land Use Plan 2010-2030, Salatiga still having lacked 30% of the green open space from its area. The addition of the city park is one of the green open space planning that can support the lack, so the research about Salatiga city park location determination with Geographic Information System (GIS) was as one part of the planning of the city park addition. The purpose of the study is ideal location determine for the city park in Salatiga which it was based on population density, population preferences and city park manager, land characteristics, and government regulation about the green open space. The research method was used the descriptive method through quantitative and qualitative approach by utilizing GIS software, questionnaire, and an interview. The research result showed the city park can be developed in protected areas (especially in urban forest sites) or in cultivation areas. However, the city park development must be in accordance with government regulations, land character and land suitability requirements for the city parks. Potential locations for urban parks in Salatiga city can be distinguished by two categories: 1. Recommended class area with 944,584 ha (16.64% of total area) and 2) Highly Recommended class area with 123.37 ha (2.17% of total area).
Evaluation of the Aesthetic and Social Function of the Bendosari Park Salatiga City Roynaldo Kristi; Dr.Ir. Bistok Hasiholan Simanjuntak M.Si
Indonesian Journal of Computing and Modeling Vol 1 No 2 (2018)
Publisher : Pusat Studi Sistem Informasi dan Pemodelan Mitigasi Tropika

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1016.104 KB)

Abstract

To function improve from the Bendosari park value, aesthetic and social function evaluation must be conducted. This study aims to evaluate the landscape characteristics of Bendosari Park based on aspects of the aesthetic and social function. The research was conducted in Bendosari Park on Ring Road of Salatiga City, Central Java Province, Indonesia from June until August 2017. Evaluation of the aesthetic and social function used close questionnaire method toward 30 respondents with respondents criteria of aged over 12 years and analyzed using KPI (Key Performance Indicator) method to find out how far the two aspects (the aesthetic and social) are reached. The study indicates that Bendosari Park has fulfilled the social and aesthetic functions of the park which indicated by the value of KPI analysis greater than 0.67.
PENGGUNAAN INDOLE-3-BUTYRIC ACID (IBA) UNTUK MENINGKATKAN PERTUMBUHAN STEK BATANG KOPI ROBUSTA Bistok Hasiholan Simanjuntak; Ratna Dewi P
Agrin Vol 24, No 2 (2020): Agrin
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.agrin.2020.24.2.505

Abstract

Perbanyakan kopi robusta (Coffea canephora) dengan metode stek sering terkendala pada pertumbuhan akar dan tunas daun. Pemberian Indole-3-Butyric Acid (IBA) diharapkan dapat mengatasi masalah pertumbuhan akar dan tunas pada stek batang. Tujuan penelitian ini adalah untuk menemukan konsentrasi IBA yang tepat terhadap pertumbuhan akar dan tunas daun stek kopi robusta. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) nonfaktorial dengan perlakuan konsentrasi IBA terdiri atas 0 ppm, 50 ppm, 100 ppm, 150 ppm, 200 ppm, 250 ppm, dan 300 ppm, dan diulang 4 kali. Parameter pengamatan meliputi panjang akar, jumlah daun, bobot basah dan kering berangkasan stek batang. Hasil penelitian menunjukkan bahwa pemberian IBA 150 ppm pada stek batang kopi robusta mampu menghasilkan panjang akar terbaik. Namun demikian, seluruh konsentrasi IBA yang diujikan belum mampu meningkatkan jumlah daun, berat berangkasan basah, dan berat berangkasan kering stek batang kopi robusta.Kata kunci: Indole Butyric Acid, kopi robusta, stek batang, 
PENGGUNAAN INDOLE-3-BUTYRIC ACID (IBA) UNTUK MENINGKATKAN PERTUMBUHAN STEK BATANG KOPI ROBUSTA Bistok Hasiholan Simanjuntak; Ratna Dewi P
Agrin Vol 24, No 2 (2020): Agrin
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.agrin.2020.24.2.505

Abstract

Perbanyakan kopi robusta (Coffea canephora) dengan metode stek sering terkendala pada pertumbuhan akar dan tunas daun. Pemberian Indole-3-Butyric Acid (IBA) diharapkan dapat mengatasi masalah pertumbuhan akar dan tunas pada stek batang. Tujuan penelitian ini adalah untuk menemukan konsentrasi IBA yang tepat terhadap pertumbuhan akar dan tunas daun stek kopi robusta. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) nonfaktorial dengan perlakuan konsentrasi IBA terdiri atas 0 ppm, 50 ppm, 100 ppm, 150 ppm, 200 ppm, 250 ppm, dan 300 ppm, dan diulang 4 kali. Parameter pengamatan meliputi panjang akar, jumlah daun, bobot basah dan kering berangkasan stek batang. Hasil penelitian menunjukkan bahwa pemberian IBA 150 ppm pada stek batang kopi robusta mampu menghasilkan panjang akar terbaik. Namun demikian, seluruh konsentrasi IBA yang diujikan belum mampu meningkatkan jumlah daun, berat berangkasan basah, dan berat berangkasan kering stek batang kopi robusta.Kata kunci: Indole Butyric Acid, kopi robusta, stek batang, 
PENILAIAN FUNGSI POHON TEPI JALAN DIPONEGORO KOTA SALATIGA DALAM MENJERAP DEBU Muhammad Syaiful Afrizal; Bistok Hasiholan Simanjuntak; Alfred Jansen Sutrisno
Agrifor : Jurnal Ilmu Pertanian dan Kehutanan Vol 21, No 2 (2022): Oktober 2022
Publisher : Universitas 17 Agustus 1945 Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31293/agrifor.v21i2.6187

Abstract

Pohon yang terdapat di lanskap perkotaan memiliki peran sebagai penyaring polusi udara, terutama debu yang beterbangan. Sedangkan Jalan Diponegoro Kota Salatiga merupakan jalan dengan tingkat kepadatan kendaraan dan aktivitas masyarakat yang tinggi. Berdasarkan peran pohon sebagai penyaring debu dan polusi udara, maka perlu dilakukan penelitian tentang penilaian fungsi pohon tepi jalan di Jalan Diponegoro dalam menyerap debu. Tujuan penilaian fungsi pohon di tepi Jalan Diponegoro adalah untuk mengetahui kemampuan pohon dalam menyerap debu pada lanskap Jalan Diponegoro dan memberikan rekomendasi berupa pemilihan pohon yang tepat di kawasan tersebut. penelitian ini dilaksanakan pada tanggal 28 November 2019 di sepanjang Jalan Diponegoro Salatiga. Alat dan bahan yang digunakan pada penelitian ini adalah gelas beaker, kertas saring, oven, kuas, akuades, dan sampel daun. Metode yang digunakan yaitu menggunakan perhitungan rumus jerapan debu pada daun dan dilanjutkan dengan metode statistik dengan uji Mann Whitney. Hasil penelitian menjelaskan bahwa pohon dengan tipe tajuk piramidal dan menyebar memiliki nilai penyerapan debu tertinggi. Dari hasil perhitungan, maka dapat disimpulkan bahwa tipe tajuk piramidal dan menyebar memiliki daya serap debu yang sesuai sehingga dapat dilakukan tindakan yang direkomendasikan berupa pemilihan pohon dengan daya serap debu terbaik di Jalan Diponegoro Kota Salatiga yaitu pohon dengan bentuk tajuk piramida dan menyebar.
Pemberian Berbagai Level Air dan Pengaruhnya Pada Pertumbuhan dan Hasil Tanaman Kedelai (Glycine max (L) Merr) Varietas Grobogan Yusthian Hendra Mahardika; Bistok Hasiholan Simanjuntak
Vegetalika Vol 11, No 4 (2022): In Publish
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/veg.76102

Abstract

Faktor ketersediaan air tanah menjadi faktor pembatas pertumbuhan dan hasil kedelai. Oleh karena itu tujuan penelitian adalah mengetahui pengaruh pemberian berbagai level kadar air tanah terhadap pertumbuhan dan hasil tanaman kedelai varietas Grobogan. Tata letak penelitian dengan Rancangan Acak Kelompok (RAK), terdiri atas 4 perlakuan pemberian air sebanyak kadar air tanah 25% kapasitas lapang (P1), kadar air tanah 50% kapasitas lapang (P2), kadar air tanah 75% kapasitas lapang (P3), kadar air tanah 100% kapasitas lapang (P4). Masing-masing perlakuan diulang 6 kali. Data penelitian terdiri atas prolin daun, stress index (SI), tinggi tanaman, berat kering tanaman, jumlah polong per tanaman dan berat biji per hektar. Data dianalisis dengan Analisis Sidik Ragam dan dilanjutkan dengan Uji Beda Nyata (BNJ) dengan taraf kepercayaan 95%. Pemberian air mempengaruhi produksi prolin, pertumbuhan dan hasil tanaman kedelai varietas Grobogan. Akumulasi prolin dalam tanaman semakin meningkat ketika tingkat cekaman kekurangan air semakin tinggi.  Pemberian air 75% kapasitas lapang mengakibatkan cekaman kekeringan tanaman kelas rendah, sedangkan tinggi tanaman kedelai, bahan kering tanaman, jumlah polong, dan berat gabah tidak berbeda nyata dengan pemberian air 100% kapasitas lapang. Pemberian air 50% kapasitas lapang mengakibatkan cekaman kekeringan tanaman kelas sedang dan secara nyata menurunkan tinggi tanaman. Pemberian air 25% kapasitas lapang mengakibatkan cekaman kekeringan tanaman kelas tinggi dan pada kondisi demikian terjadi penurunan secara nyata pada tinggi tanaman, berat kering tanaman,  jumlah polong dan berat biji per hektar serta terjadi penurunan hasil hingga 69% jika dibandingkan dengan pemberian air 100% kapasitas lapang.
Co-Authors - Mustoyo - Suprihati - Susilawati Alfred Jansen Sutrisno Alfred Jansen Sutrisno Andree Wijaya Setiawan Bangun, Yurin Bayu Nuswantara Dina Rotua Valentina Banjarnahor Djoko Murdono Endang Pudjihartati Eriandra Budhisurya Erik Kado Nugroho Liska Simamora Maria Maria Maria Marina Herawati Maria Marina Herawati Muhammad Syaiful Afrizal Naomi Endah Pratiwi Nugraheni Widyawati Puas Andrew Alvianto R. C. W. Anggono Rejo Wagiman Roynaldo Kristi Sri Hartini Suprihati Suprihati Theresa Dwi Kurnia Trias Budi Rahayu Velian Sandy Wardana Yoga Aji Handoko Yohanes Hendro Agus Yuliawati Yusthian Hendra Mahardika