Jurnal Magrobis https://ejurnal.unikarta.ac.id/index.php/magrobis Magrobis Journal: Journal of Agriculture (Agrotechnology and Agribusiness) Agriculture Faculty, University of Kutai Kartanegara, Indonesia en-US Jurnal Magrobis 1412-0828 VARIASI PENGGUNAAN VOLUME TABUNG UDARA TERHADAP EFISIENSI POMPA HIDRAM DUA KATUB LIMBAH https://ejurnal.unikarta.ac.id/index.php/magrobis/article/view/945 <p>Water is the source of life for living beings. One of the efforts to fulfillment of water demand, particularly in areas where the elevation is higher than the water source, using a hydram pump. At this time, the pump ttype was used is a pump with using an electric motor or diesel power, which is required a fuel oil so that require additional costs in the operation. To resolve this problem, the thought of appear to create an appropriate technology devices that is a hydram pump which does not use an electric motor power. Research aimed to determine the water debit and level of water flow out which is producet by air-tube variation volume, determine the efficiency of hydram by using variations volume of air tube. Research was conducted on August 2016 at Laboratory of Energy and Farm Machinery, Agricultural Engineering Studies Program, Sekolah Tinggi Pertanian (STIPER) Kutai Timur and tool testing on the area of East Kutai Agriculture College. Research method were used is analysis method and linear regression. The data was obtained through the testing will be analyzed by using empirical formulas that support calculation of data processing. Research results showed that the average efficiency of hydram pump according to D’Aubuission, on the volume of air-tube 1 amounted to 1,845%, volume of air-tube 2 amounted to 1,557&amp;, volume of air-tube 3 amounted to 1,225%, and volume of air-tube 4 amounted to 0,923%.</p> Muhammad Rusdi Benny Kurniawan Copyright (c) 2021 http://creativecommons.org/licenses/by-sa/4.0 2021-10-29 2021-10-29 21 2 293 303 REKLAMASI LAHAN PASCA TAMBANG BATUBARA https://ejurnal.unikarta.ac.id/index.php/magrobis/article/view/946 <p>Kegiatan penambangan batubara dengan menggunakan alat-alat berat mengakibatkan terjadinya penurunan produktivitas tanah, pemadatan tanah, erosi dan sedimentasi. Pada lahan pasca tambang pH tanah menjadi sangat masam karena terkontaminasi logam berat. Kondisi ekstrim tersebut dapat diatasi dengan perbaikan kondisi tanah yaitu pengapuran atau penambahan bahan organik, memperbaiki sistem drainase untuk mencegah genangan air, dan penyiraman. Serta pemilihan jenis pohon yang tepat yang dapat beradaptasi dengan kondisi-kondisi ekstrim tersebut. Pemulihan lahan bekas tambang dengan pemberian pupuk organik dan anorganik dapat memperbaiki sifat kimia, fisika, dan biologi tanah pada lahan yang telah terganggu akibat kegiatan pertambangan sehingga sesuai dan berguna untuk kegiatan revegetasi. Pengelolaan tanah dengan pemberian pupuk yang tepat dapat memelihara lingkungan agar tetap berkelanjutan.</p> <p>Tujuan penelitian adalah untuk mengetahui kondisi kualitas tanah setelah diberikan pupuk organik dan anorganik. Serta menganalisis tanah dengan mengamati pH tanah sebelum dan sesudah penelitian. Pemberian pupuk dilakukan dengan 4 perlakuan yaitu perlakuan P0 kontrol (tanpa pupuk), perlakuan P1 (Pupuk Organik 4 Kg), perlakuan P2 (Kapur Dolomit 100 gram), perlakuan P3 (NPK Mutiara 30 gram).</p> <p>Hasil menunjukkan pemberian kapur dolomit memperbaiki sifat kimia tanah dan meningkatkan pH tanah yang semula sangat masam (4,66) menjadi agak masam (6,5), serta berpengaruh terhadap diameter tanaman, sedangkan pupuk organik (kompos Sapi) meningkatkan pH tanah menjadi agak masam (6,2) dan meningkatkan pertambahan tinggi tanaman. Sementara pupuk NPK meningkatkan pH tanah menjadi agak masam 5,8.</p> Yustina Hong Lawing Copyright (c) 2021 http://creativecommons.org/licenses/by-sa/4.0 2021-10-29 2021-10-29 21 2 304 311 RESPONS PERTUMBUHAN DAN HASIL BAWANG MERAH (Allium ascalonicum L.) PADA BERBAGAI DOSIS PUPUK KANDANG SAPI DAN PUPUK NPK https://ejurnal.unikarta.ac.id/index.php/magrobis/article/view/947 <p><em>The research aim to determine the effect of growth and yield the onion to the on&nbsp; dose of manure and NPK fertilizer. This research was conducted since March to June 2021, at Sumber Rejeki, Dusun Merangan, Desa Loh Sumber, Kecamatan Loa Kulu, Kabupaten Kutai Kartanegara, Provinsi Kalimantan Timur.</em></p> <p><em>This study used a randomized complete block design (RCBD) factorial pattern with three replications. </em><em>Treatment of cow manure consists of 3 level and Treatment of NPK fertilizer consists of 3 level, in order to obtain 9 units of research, namely : k<sub>0</sub>n<sub>0</sub> (control), k<sub>0</sub>n<sub>1</sub> (control + 25 g NPK), k<sub>0</sub>n<sub>2</sub> (control + 50 g NPK), k<sub>1</sub>n<sub>0</sub> (3 kg cow manure + control), k<sub>1</sub>n<sub>1</sub> (3 kg cow manure + 25 g NPK), k<sub>1</sub>n<sub>2</sub> (3 kg cow manure + 50 g NPK), k<sub>2</sub>n<sub>0</sub> (6 kg cow manure + control), k<sub>2</sub>n<sub>1</sub> (6 kg cow manure + 25 g NPK), k<sub>2</sub>n<sub>2</sub> (6 kg cow manure + 50 g NPK). </em></p> <p><em>The results showed that the on treatment of cow manure had no significant effect on the average number of leaves aged 15, 30, 45 HST, number of tubers, tuber weight, and yield per hectare. </em><em>The result highest in per hectare</em> <em>t</em><em>hat is in treatment k<sub>2</sub> (6 kg per plot) with an average 9,96 t ha<sup>-1 </sup>and lowest yield on&nbsp; k<sub>1</sub> (3 kg per plot) with an average 9,07 t ha<sup>-1</sup>.</em></p> <p><em>The result of interaction between various cow manure and NPK fertilizer have no significant on all parameters. The highest average of per hectare is on treatment k<sub>2</sub>n<sub>1</sub> with the result 10.4 &nbsp;t ha<sup>-1</sup>. The lowest average of &nbsp;per hectare is on treatment k<sub>1</sub>n<sub>2</sub> with the result 7.7 t ha<sup>-1</sup>.</em></p> Mohamad Fadli Syahrani Syahrani Melinda Gracy Kristin Copyright (c) 2021 http://creativecommons.org/licenses/by-sa/4.0 2021-10-29 2021-10-29 21 2 312 319 REFINING ASAP CAIR KULIT DURIAN (Durio zibhetinus) HASIL PIROLISIS DENGAN DESTILASI SEDERHANA https://ejurnal.unikarta.ac.id/index.php/magrobis/article/view/948 <p><em>This study aims to determine the characteristics of pyrolysis durian skin smoke, determine the characteristics of durian skin liquid smoke, and determine the yield of durian skin smoke after distillation. Liquid smoke is obtained from the pyrolysis of soft wood and hard wood, one of which is durian skin, durian skin can be used as a raw material in the manufacture of liquid smoke, Besides durian skin contains cellulose, hemicellulose and lignin compounds which are chemicals that form components of liquid smoke. One way to obtain the desired organoleptic properties is by distillation treatment, so it is hoped that the distillation method can produce higher quality liquid smoke as a preservative that is cheap and safe for health. Parameter values ​​of refractive index and pH of durian peel liquid smoke Pyrolysis results are greater than after distillation, except for acetic acid which is smaller. The refractive index value is 1,3572, the pH value is 4,901, and the acetic acid value is 6,172 N. The refractive index and pH values ​​of the distillated durian skin liquid smoke are smaller than those of pyrolysis, except that the acetic acid value is greater. The average value of the refractive index is 1,23467-1,34800, the pH value is 3,44067-2,51600, and the value of acetic acid is 7,37533-7,97600 N. The effect of temperature and distillation time affects the yield value of the resulting liquid smoke. The temperature and time of distillation affect the value of the volume of the distillation result. The higher the distillation temperature and time, the greater the yield. The best treatment is temperature 3 (150<sup>o</sup>C) and time 3 (90 minutes) of 84.66%.</em></p> Dhani Aryanto Muhammad Rusdi Copyright (c) 2021 http://creativecommons.org/licenses/by-sa/4.0 2021-10-29 2021-10-29 21 2 320 330 PENGARUH FREKUENSI PENGENDALIAN GULMA TERHADAP POPULASI GULMA PADA TANAMAN BAWANG MERAH (Bima Brebes) https://ejurnal.unikarta.ac.id/index.php/magrobis/article/view/949 <p>The purpose of this study was to find the best dosage of Trichokompos fertilizer which gives the best results on shallot plants and to determine the amount or frequency of weed control that affects shallot plants. Kutai Kartanegara Regency,&nbsp; East Kalimantan Province ,&nbsp; since November 2019 until January 2020. The research&nbsp; used the Split Plot&nbsp; design 4x5 consisting of 2 factors and&nbsp; repeated 3 times. The First factor is Trichocompos fertilizer (t) consisting of 4 levels, namely (t0) No Fertilization, (t<sub>1</sub>) 2,5 kg plot<sup>-1</sup>, (t<sub>2</sub>) 3 kg plot<sup>-1</sup>, (t<sub>3</sub>) 3,5 kg plot<sup>-1</sup>. The second factor is weed control (g) consisting of 5 levels, namely (g<sub>0</sub>) without weed control, (g1) once a week equivalent to 8 times weed control, (g<sub>2</sub>) once a week equivalent to 4 times weed control, (g<sub>3</sub>) once a week equivalent to 3 times weed control, (g<sub>4</sub>) once a week equivalent to 2 times weed control. The results showed the effects of weed control on the number of leaves at the age of 40 and 60 dap, the number of tubers showed a significant effect. Plants that are free from weeds will show better growth when compared to those grown with 6.69 tubers of weeds. Then the lowest average result is the treatment of 5.36. Weed control also had a significant effect on weed populations and weed dry weight. It is suspected that there are weed seeds that are buried in the soil during the soil cultivation process causing the seeds to be lifted back to the surface of the soil during weed removal which causes new weeds to grow.</p> Rosita Wulandari Encik Akhmad Syaifudin Ni’matuljannah Akhsan Copyright (c) 2021 http://creativecommons.org/licenses/by-sa/4.0 2021-10-29 2021-10-29 21 2 331 337 RESPONS PERTUMBUHAN DAN HASIL UBI JALAR UNGU (Ipomoea batatas L) PADA BERBAGAI PEMBERIAN PUPUK KANDANG AYAM DAN PUPUK NPK MUTIARA https://ejurnal.unikarta.ac.id/index.php/magrobis/article/view/950 <p>This study aims to see the effect of chicken coop and NPK pearls on the growth and yield of purple sweet potato (Ipomoea batatasL). This study was started in August - November 2020, located on Ikip Mekarsari Street, Tenggarong District, Kutai Kartanegara Regency, East Kalimantan Province. The research was arranged in a factorial Randomized Complete Block Design (RCBD) consisting of 2 factors and repeated 3 times. The first factor is the provision of chicken manure (p) which consists of 3 levels, namely p<sub>0</sub> (without treatment), p<sub>1</sub> (20 t ha<sup>-1</sup>), p<sub>2</sub> (40 t ha<sup>-1</sup>). And the second factor is the pearl NPK fertilizer (n) which consists of 3 levels, namely n<sub>0</sub> (without treatment), n<sub>1</sub> (300 Kg ha<sup>-1</sup>), n<sub>2</sub> (600 Kg ha<sup>-1</sup>).&nbsp;The results showed that chicken manure had no significant effect on all observed parameters. The highest average yield of plants t ha<sup>-1</sup> is the treatment p<sub>2</sub> (40 t ha<sup>-1</sup>) 26,58 t ha<sup>-1</sup>. while for the lowest treatment with an average of 25,46 t ha-1, namely the p<sub>1</sub> treatment (20 t ha<sup>-1</sup>).&nbsp;The results showed that NPK fertilizer had no significant effect on all observed parameters. The highest average yield of plants t ha<sup>-1</sup> was at treatment n<sub>2 </sub>(600 Kg ha<sup>-1</sup>) 26,11 t ha<sup>-1</sup>, while for the lowest treatment with an average of 25,68 t ha<sup>-1</sup>, namely treatment n<sub>1</sub> (300 Kg ) ha<sup>-1</sup>). The results of the interaction between chicken manure and NPK fertilizer did not significantly affect all parameters. The highest average yield of t ha<sup>-1</sup> was the p<sub>2</sub>n<sub>2</sub> treatment with a yield of 26,90 t ha<sup>-1</sup>. And the lowest average yield of t ha<sup>-1</sup> is the p<sub>1</sub>n<sub>1</sub> treatment with a yield of 24,73 t ha<sup>-1</sup>.</p> Eka Rahmawati Kaharuddin Kaharuddin Copyright (c) 2021 http://creativecommons.org/licenses/by-sa/4.0 2021-10-29 2021-10-29 21 2 338 346