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Robert Sinaga
Universitas Quality
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Journal : JURNAL AGROTEKNOSAINS

 1 
RANCANG BANGUN KOMPOSTER AEROB DAN ANAEROB UNTUK MENGURANGI SAMPAH ORGANIK RUMAH TANGGA Robert Sinaga; Julieta Christy; Ruth Dameria Haloho
JURNAL AGROTEKNOSAINS Vol 5, No 2 (2021): JURNAL AGROTEKNOSAINS
Publisher : Universitas Quality

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36764/ja.v5i2.625

Abstract

This objective of this study was design and manufacture a simple drum compost reactor (composter) to be able to process organic waste into compost so as to reduce the problem of organic waste towards generation-z let’s go organic in the orphanage sinar indah cahaya bersama. The method used was engineering or modification, design research activities that are not routine so that contributions are generated in the form of processes and products. The result of the composter was vertical type aerobic composter drum without mixing system with parts up cover, composting room, filter, filter support posts, leachate chamber (liquid organic fertilizer), pipes and air vents covered with gauze, solid compost discharge holes and faucet dispensing liquid organic fertilizer.
ANALISIS GAYA PEMECAHAN CANGKANG BIJI KEMIRI (Aleurites moluccana Willd.) Robert Sinaga
JURNAL AGROTEKNOSAINS Vol 4, No 1 (2020): Jurnal Agroteknosains
Publisher : Universitas Quality

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36764/ja.v4i1.304

Abstract

 Diperlukan pengetahuan dasar tentang besarnya energi dan gaya yang dibutuhkan pada proses pemecahan cangkang biji kemiri untuk mendapatkan daging biji kemiri bulat utuh. Penelitian dilakukan dengan metode menjatuhkan biji dari berbagai level ketinggian kemiri dan metode menjatuhkan beban mengenai biji kemiri. Hasil penelitian memperlihatkan bahwa dengan metode menjatuhkan biji kemiri dari berbagai level ketinggian diperoleh bahwa ketinggian optimum untuk memecahkan biji kemiri pada posisi intersep C dengan kadar air 6%  adalah dari ketinggian 9 m dengan gaya sebesar 1,52 N. Sementara dengan metode menjatuhkan beban 209,7 gr mengenai biji kemiri diperoleh gaya 6,52 N dan menjatuhkan beban 182,64 gr diperoleh gaya 6,26 N. Untuk keseluruhan metode dibutuhkan energi sebesar 1 joule untuk memecahkan cangkang biji kemiri.   Basic knowledge about amount of energy and breaking force of the candlenut deshelling process is needed to get a whole round kernel. The study was conducted by dropping the candlenut from various level of height and dropping the load on the candlenut. The result showed that the method of droping candlenut from various levels of height was obtained that the optimum height to break the candlenut in the intercept C position with a water content of 6% was 9 m with a force of 1,52 N. While by dropping a load of 209,7 gr obtained a force of 6,52 N and dropping a load of 182,64 gr obtained a force of 6,26 N. For the whole method an energy of 1 joule is needed to break the shell of the candlenut.
KOMPARASI BUDIDAYA TANAMAN PISANG BARANGAN (Musa acuminata Linn.) SECARA TRADISIONAL DAN MODERN DI DESA SUKADAME KABUPATEN DELI SERDANG Donatus Dahang; Robert Sinaga; Haris Ariando Sembiring
JURNAL AGROTEKNOSAINS Vol 6, No 1 (2022): JURNAL AGROTEKNOSAINS
Publisher : Universitas Quality

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36764/ja.v6i1.752

Abstract

Penelitian ini dilakukan di Dusun Namo Keling Desa Suka Dame, Kecamatan Kutalimbaru dan Desa Tambunen, Kecamatan Sibolangit, Kabupaten Deli Serdang. Jumlah sampel pada penelitian ini sebanyak 25 petani. Variabel bebas dalam penelitian ini terdiri dari penyediaan bibit (X1), penyiapan lahan (X2), penanaman (X3), irigasi (X4), penjarangan anakan (X5), pemupukan (X6), sanitasi lahan (X7), pemotongan jantung (X8) dan pengendalian hama dan penyakit (X9), sedangkan variabel terikat adalah produksi pisang barangan Hasil penelitian ini menunjukkan penyediaan bibit (2,39), penjarangan anakan (-2,44), pemupukan (2,37), sanitasi lahan (2,40) dan pengendalian hama (2,35) berpengaruh nyata terhadap produksi pisang barangan, sedangkan penyiapan lahan, penanaman, irigasi, pemotongan jantung pisang berpengaruh tidak nyata terhadap produksi pisang barangan. Hasil produk pisang barangan teknik modern 12,21 ton/ha dan teknik tradisional 9,64 ton/ha.
PENGARUH MODIFIKASI JUMLAH ALUR DAN KECEPATAN PUTAR ROTOR BAR TERHADAP PRODUKTIVITAS DAN HASIL MESIN PEMECAH KEMIRI SISTEM RIPPLE MILL Robert Sinaga; Julieta Christy; Donatus Dahang; Riduan Sembiring; Swati Sembiring; Seringena Br Karo; Daniel Gea; Relius Buulolo
JURNAL AGROTEKNOSAINS Vol 6, No 1 (2022): JURNAL AGROTEKNOSAINS
Publisher : Universitas Quality

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36764/ja.v6i1.749

Abstract

Advanced knowledge of candlenut deshelling machine is needed to obtain optimal whole round kernel. The objective of this study was to modify the rotor bar on a candlenut deshelling machine with a ripple mill system. The method was engineering or modification, were made in the form of processes and products. The number of grooves on the rotor bar was modified became 2, 4 and 6. Rotation speed of the rotor bar were varied to 15 rpm, 18.75 and 25 rpm. The number of grooves gave a very significant effect on the capacity of the machine, whole round kernel, broken kernel, sticky kernel and unbroken seeds. The rotational speed of the rotor bar gave a very significant effect on the capacity of the machine, broken kernel, and sticky kernel, and gave an insignificant effect on whole round kernel and broken kernel. Interaction between the number of grooves and the rotational speed of the rotor bar gave a very significant effect on the capacity of the machine and the sticky kernel and insignificant effect on the whole round kernel, crushed kernel and unbroken seeds.
TEKNOLOGI TEPAT GUNA PENERAPAN HYDROCOOLING DAN PENYIMPANAN DINGIN UNTUK MEMPERPANJANG UMUR SIMPAN BUAH DAN SAYUR YANG TERKENA ERUPSI GUNUNG SINABUNG Maya Sari; Roida Ervina Sinaga; Juliana Br Simbolon; Robert Sinaga
JURNAL AGROTEKNOSAINS Vol 3, No 2 (2019): Jurnal Agroteknosains
Publisher : Universitas Quality

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36764/ja.v3i2.265

Abstract

The effect of Mt. Sinabung eruption has profoundly affected the quality of fruit and vegetable production, in this context is fruit and vegetables. Fruit and vegetable, carrot, strawberry and pakcoy is kind of fruit and vegetable that is consumed by the community especially the communities surrounding both the mountain ranges and the general medan area. The fruit and vegetable are kinds of climateric and the lifespan must be kept. During the transportation of field to market, there wa both mechanical and physical damage.The damage will obviously harm farmers, merchants, and other marketers. So that hydrocooling is applied as a post harvest treatment. Hydrocooling is done right after the harvest, This prosess extracts heat from fruit and vegetables so that respiration and transpiration can continue for a long time.The lack of farmer understanding for post harvest handling is a major problem. Therefore, farmers in aberastagi will be given education and training about post harvest handling (hydrocooling) so they could understand and self applying that will keep their produce fresh. As for the output of this activity is a simple hydrocooling device designed as a visual aid in training. This hydrocooling equipment can also be a reference to training science for schoolchildren in particular agriculture schools and could be a referenceto researchers and developing them.
OKUPASI HENDERSONIA KE DALAM AKAR TANAMAN KELAPA SAWIT (Elaeis guineensis Jacq) UNTUK MENCEGAH PENYAKIT GANODERMA (Ganoderma boniense) Donatus Dahang; Robert Sinaga; Kiki Pagar Sinalsal Mangatasi Munthe; Lyndon Parulian Nainggolan
JURNAL AGROTEKNOSAINS Vol 6, No 2 (2022): JURNAL AGROTEKNOSAINS
Publisher : Universitas Quality

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36764/ja.v6i2.935

Abstract

Penelitian okupasi Hendersonia kepala sawit di pembibitan dan pasca-penanaman telah dilakukan di PTPN III Kebun Pulau Mandi dan Kebun Tanah Raja, Maret 2018-Januari 2020. Umur bibit 3 bulan digunakan GanoEF 50 gr/ pokok, umur bibit 6 bulan GanoEF 50 gr/ pokok, dan umur bibit 9 bulan GanoEF 50 gr/ pokok. Untuk tanaman di lapangan, Kontrol/ perlakuan I: kontrol, Perlakuan II: Bibit yang tidak menggunakan GanoEF saat pembibitan dan diberikan GanoEF sebanyak 500 gr di lubang tanam saat penananaman, Perlakuan III: Bibit yang telah diberikan 100 gr GanoEF saat dipembibitan dan diberikan GanoEF sebanyak 500 gr di lubang tanamsaat penanaman, dan Perlakuan IV: Bibit yang telah diberikan 150 gr GanoEF saat dipembibitan dan diberikan GanoEF sebanyak 500 gr di lubang tanam saat penanaman. Data dianalisis secara deskriptif yaitu dengan menghitung persentase jumlah potongan akar ditemukannya Hendersonia berbanding seluruh potongan akar yang diamati dikali 100%. Hasil penelitian ini menunjukkan, rata-rata okupasi Hendersonia di pembibitan setelah dua kali aplikasi (100 gr/ bibit) sebesar 36,7% dan setelah tiga kali aplikasi (150 gr/ bibit) adalah 70%. Hasil percobaan terhadap tanaman yang sama setelah tiga bulan ditanam di lapangan ditemukan adanya okupasi Hendersonia sebesar 57,32% untuk tanaman yang diberikan Hendesonia di lubang tanam (perlakuan II), 68% Hendersonia pada perlakuan III, dan 74,76% Hendersonia ditemukan pada perlakuan IV. Setelah tanaman berumur satu tahun di lapangan dilakukan pemeriksaan kembali kandungan Hendersonia di dalam akar dan ditemukan, terdapat 0% pada perlakuan I, 69,28% pada perlakuan II, 73,32%  perlakuan III, dan 77,3% pada perlakuan IV
KOMPARASI KOMPOSTER AEROB DAN ANAEROB SEDERHANA DALAM PENGELOLAAN LIMBAH ORGANIK Robert Sinaga; Julieta Manurung; Rico Taruna Siregar
JURNAL AGROTEKNOSAINS Vol 7, No 1 (2023): Jurnal Agroteknosains
Publisher : Universitas Quality

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36764/ja.v7i1.1039

Abstract

The next step after designing the composter is to test the performance of the composter. It is very important to observe the composting process find out the optimum type of composter to use both in the rate of composting and the compost produced. The aims of this research was to compare aerobic and anaerobic composters on composting rates and the compost. The method used was quasi-experimental by comparing the performance of the composter both in terms of composting speed, temperature, humidity, degree of acidity, color and smell of the compost. The results showed that anaerobic composting had a better rate (12 days) than the aerobic method (25 days). The composting process using an aerobic composter required a slightly higher temperature (36oC) than an anaerobic composter (32.5oC). The composting process using an aerobic composter has an average humidity value of 60.75 while that of an anaerobic composter is 68.54. Anaerobic composter showed almost the same value as the aerobic method for the degree of acidity. In terms of odor and color measurements, anaerobic composters produced a more pungent odor and a blackish brown color.
Co-Authors Adli Putra Ermanda andrew simanjuntak Daniel Gea Daniel Maruli Tua Gultom Daniel Maruli Tua Gultom Desrial Donatus Dahang haris ariando sembiring Juliana Br Simbolon Julieta Christy Julieta Christy Julieta Manurung Kiki Pagar Sinalsal Mangatasi Munthe Lyndon Parulian Nainggolan Maya Sari Melfrianti Romauli Posman Marpaung Relius Buulolo Rico Taruna Siregar Riduan Sembiring Roida Ervina Sinaga Ruth Dameria Haloho Saragih, Chaula Lutfia Seringena Br Karo Seringena Br Karo Suranta Sembiring Suranta Sinulingga Suranta Sinulingga Swati Sembiring Swati Sembiring