Jurnal Online Politeknik Negeri Lampung
Not a member yet
1980 research outputs found
Sort by
PENYUSUNAN FORMULASI OPTIMAL DALAM PEMANFAATAN TEPUNG MAGGOT SEBAGAI BAHAN BAKU PAKAN IKAN BAGI KELOMPOK UNIT PEMBENIHAN RAKYAT (UPR) JATIMAS FISH FARM BANDAR LAMPUNG
Get PDFA common problem in the development of fish farming is the lack of knowledge of fish farmers in terms of implementing technical management of aquaculture, planning and effectiveness in finding alternative feed ingredients to increase the growth and income of fish farmers. The partner group in this activity is a group of fish farmers who carry out hatchery for consumption fish and ornamental fish in Bandar Lampung. In the production process, there are still problems with the supply of commercial feed, which is expensive and limited. One solution to this problem is to produce feed independently by utilizing maggot as a raw material for a source of animal protein that is cheaper and easier to cultivate. Maggot production has been carried out and developed by this partner group. The knowledge that must be understood in the manufacture of feed is to formulate a feed that will produce the appropriate composition of ingredients and nutritional content. The Pearsons Square method is one of the most commonly used methods for preparing fish feed formulations. The results of this training activity provide enthusiasm and encouragement for partners to produce feed independently because it is based on the knowledge of preparing optimal feed formulations and knowledge of fish feed raw materials. Thus it can be concluded that this training is very important and fundamental in overcoming the problem of providing feed in fish farming
VALIDASI UJI TEKAN INJEKTOR MENGGUNAKAN METODE VARIASI KETEBALAN SHIM UNTUK MENGHASILKAN SEMPROTAN OPTIMUM
Get PDFInjektor pada motor diesel berfungsi untuk menyalurkan bahan bakar ke dalam selinder pada akhir langkah kompresi saat piston berada pada 14° sebelum TMA, pada langkah ini injektor menyemprotkan bahan bakar dalam bentuk kabut sempurna secara kontinyu dan teratur sesuai mekhanisme katup. Injektor di dalam mekhanismenya di bantu oleh komponen – komponen penunjang agar memaksimalkan kinerja dari injektor di dalam mengabutkan bahan bakar. Diantaranya adalah pegas dan shim (pelat penyetel). Permasalahan yang diungkapkan dalam penelitian ini yang pertama adalah Proses pembelajaran dalam hal ini peraktikum uji tekanan penyemperotan nozlle mahasiswa membutuhkan hasil yang valid dan akurat, komunikasi yang baik dan dapat menarik perhatian dari mahasiswa. Tujuan penelitian ini adalah dapat membuat shim dengan dimensi yang bervariasi untuk mendapatkan tekanan yang maksimal, dan meningkatkan keterampilan mahasiswa dalam hal bongkar pasang injector dan penggunaan Injektor tester. Tujuan khusus untuk mengetahui pengaruh pemakaian ketebalan shim penyetel terhadap penyemprotan solar pada sebuah injektor/nozlle yang berpengaruh terhadap proses pembakaran motor. Dengan penyemprotan yang baik akan menghasilkan pembakaran yang ideal sehingga kerja engine maksimal. Metode penelitian yang digunakan adalah analisis deskriktif eksperimen pengujian langsung pada sample melalui satu jenis injektor dan satu unit alat pengetes injektor serta dengan menggunakan berbagai macam ketebalan shim penyetel, analisis data dilakukan dengan menggunakan Microsoft Office Excel berupa tabel dan tampilan gerafik. Hasil kajiann dapat disimpulkan pengujian dari ketebalan shim 0,80mm sampai ketebalan 2,60 mm tekanan penyemprotan mengalami kenaikan. Selisih ketebalan shim 0,20mm didapatkan rata-rata selisih tekanan 20,55kg/cm 2, Tekanan pembukaan yang memenuhi standart untuk nozel tipe NM 110 model satu lubang 144,46 Kg/cm 2 , ketebalam shim yang dipilih 1,2mm Semakin tebal shim penyetel yang diberikan maka tekanan pembukaan nozel dan tekanan penyemprotan juga semakin besar.
Kata Kunci : injektor, nozel, shi
PENGARUH SALINITAS BERBEDA TERHADAP KULTUR PAKAN ALAMI Thalassiosira sp. SKALA INTERMEDIET
Get PDFThalassiosira sp. is a natural feed that has high nutritional content and supports the growth of Litopenaeus vannamei larvae. This research aims to determine cell density, peak population, daily growth rate, and water quality parameters on intermediate scale culture of Thalassiosira sp. with different salinities. This research was conducted at CV. Manunggal Rasa by applying 28 ppt, 30 ppt, and 32 ppt salinity with two repetition. The highest peak population was found in the 28 ppt salinity treatment with an average number of 40×104 cells/ml and the lowest population was in the 32 ppt salinity treatment with an average number of 35.5×104 cells/ml. The daily growth rate reached the highest level in the treatment with 28 ppt salinity with a value of 0.28 cells/ml/day. Meanwhile, the 32 ppt salinity treatment had the lowest daily growth rate 0.14 cells/ml/day. The population peak occurred on the third day, after which there was a decrease in the number of Thalassiosira sp. cell populations. The results of this research indicate that the higher the salinity will reduce the results of the parameters tested.Thalassiosira sp. merupakan pakan alami yang memiliki kandungan nutrisi tinggi dan mendukung pertumbuhan larva udang vannamei. Penelitian ini bertujuan untuk mengetahui kepadatan sel, puncak populasi, laju pertumbuhan harian, serta parameter kualitas air dalam budidaya Thalassiosira sp. pada skala intermediet dengan salinitas yang berbeda. Penelitian ini dilaksanakan di CV. Manunggal Rasa dengan menerapkan tiga perlakuan salinitas yang berbeda, yaitu 28 ppt, 30 ppt, dan 32 ppt, dengan masing-masing perlakuan diulang sebanyak dua kali. Populasi puncak tertinggi terdapat pada perlakuan salinitas 28 ppt dengan jumlah rata-rata 40×104 sel/ml dan populasi terendah pada perlakuan salinitas 32 ppt dengan jumlah rata-rata 35,5×104 sel/ml. Laju pertumbuhan harian mencapai tingkat tertinggi pada perlakuan dengan salinitas 28 ppt dengan nilai sebesar 0,28 sel/ml/hari. Sedangkan perlakuan salinitas 32 ppt memiliki nilai laju pertumbuhan harian terendah, yaitu 0,14 sel/ml/hari. Puncak populasi terjadi pada hari ketiga, setelah itu terjadi penurunan jumlah populasi sel Thalassiosira sp. Hasil kegiatan ini mengindikasikan bahwa semakin tinggi salinitas akan menurunkan hasil parameter yang diuji
Pengomposan Tandan Kosong Kelapa Sawit yang Ditambahkan Berbagai Jenis Kotoran Hewan Ternak dan Penentuan Kualitas Kimia Bokashi Berbasis Standar Nasional Indonesia
Get PDFOil palm empty fruit bunch (OPEFB) is a large amount of palm oil industry waste and has the potential to be used as bokashi fertilizer with the addition of livestock manure to enrich its nutrient content. This study aims to determine the chemical quality of OPEFB bokashi by adding each chicken, cow, and goat manure based on the quality standards of organic fertilizer INS-19-7030-2004. The research was conducted from June to August 2022 in Tanah Bumbu Regency, South Kalimantan, and the Soil Laboratory of the Department of Soils, Faculty of Agriculture, Lambung Mangkurat University, Banjarbaru, South Kalimantan. This study used a quantitative method (nutrient analysis in the laboratory). The following treatments were used: K0 = OPEFB without adding livestock manure, K1 = OPEFB with adding chicken manure, K2 = OPEFB with adding cow manure, and K3 = OPEFB with the addition of goat manure. The results showed that treatment K1 (bokashi OPEFB with chicken manure) had better chemical quality than treatments K0, K2, and K3, namely parameters organic C (13,72%), total N (0.92%), C/N ratio (14.91%), total P (1.00%), total K (0.60%), total Ca (6.56%), and total Fe (0.02%). However, the total Mg parameter in the K1 treatment was 1.36% above the maximum SNI limit, and the pH parameters in all treatments (K0 4.91, K1 5.89, K2 4.59, and K3 5.05) were not in accordance with SNI-19-7030-2004.Oil palm empty fruit bunch (OPEFB) is a large amount of palm oil industry waste and has the potential to be used as bokashi fertilizer with the addition of livestock manure to enrich its nutrient content. This study aims to determine the chemical quality of OPEFB bokashi by adding each chicken, cow, and goat manure based on the quality standards of organic fertilizer INS-19-7030-2004. The research was conducted from June to August 2022 in Tanah Bumbu Regency, South Kalimantan, and the Soil Laboratory of the Department of Soils, Faculty of Agriculture, Lambung Mangkurat University, Banjarbaru, South Kalimantan. This study used a quantitative method (nutrient analysis in the laboratory). The following treatments were used: K0 = OPEFB without adding livestock manure, K1 = OPEFB with adding chicken manure, K2 = OPEFB with adding cow manure, and K3 = OPEFB with the addition of goat manure. The results showed that treatment K1 (bokashi OPEFB with chicken manure) had better chemical quality than treatments K0, K2, and K3, namely parameters organic C (13,72%), total N (0.92%), C/N ratio (14.91%), total P (1.00%), total K (0.60%), total Ca (6.56%), and total Fe (0.02%). However, the total Mg parameter in the K1 treatment was 1.36% above the maximum SNI limit, and the pH parameters in all treatments (K0 4.91, K1 5.89, K2 4.59, and K3 5.05) were not in accordance with SNI-19-7030-2004
Evaluasi Frekuensi Penanaman Tanaman Semangka (Citrullus lanatus) Terhadap Keparahan Penyakit dan Produktivitas Tanaman Semangka: Evaluation of Planting Frequency of Watermelon (Citrullus lanatus) Plants on Disease Severity and Productivity of Watermelon
Get PDFWatermelon (Citrullus lanatus) is a high-value crop that has been commercially cultivated both in the world and in Indonesia. Many factors affect the productivity of watermelon plants such as land use frequency and plant disease attack. The purpose of this study was to determine the severity of disease in 2 fields with different frequency of planting and the productivity in each of these fields. This research was conducted in June-August 2023 in Tanjung Laut Village, Suak Tapeh District, Banyuasin Regency. The method used in this research is survey method with sampling technique using Simple Random Sampling by taking 216 samples on each land. There were 2 fields used, namely field 1 which was the first time watermelon plants were planted and field 2 which had been planted with watermelon for 3 times (this research was the third time planting). The planting distance used was 0.6 x 4.5 (m). The results of this study are diseases that often attack watermelon plants in this study are anthracnose disease caused by Colletotrichum orbiculare, Cercospora disease caused by Cercospora citrullina, fusarium wilt disease caused by Fusarium sp. and yellow creeping disease. The percentage of anthracnose disease attack in this study was 98.99% in field 1 and in field 2 was 99.06%, which was not significantly different in the T test (P-value 0.93), while the severity of anthracnose disease in field 1 was 46.48% and in field 2 38.99 (P-value 0.0001). Fusarium wilt was the most alarming disease in field 1 at 31.48% and in field 2 at 13.43%. There was an association between the frequency of watermelon planting and the incidence of fusarium wilt disease (P-value 0.00001). Productivity of watermelon plants in field 1 averaged 4.04kg/plant or 14.5 tons/ha while field 2 had a productivity of 5.02/plant or 17.9 tons/ha. The T-test results showed a significant difference between land 1 and land 1 (P-value 0.00003).Semangka (Citrullus lanatus) merupakan tanaman yang bernilai tinggi yang telah dibudidayakan secara komersial baik di dunia maupun di Indonesia. Banyak faktor yang mempengaruhi produktivitas tanaman semangka seperti frekuensi penggunaan lahan dan serangan penyakit tanaman. Tujuan penelitian ini adalah untuk mengetahui keparahan penyakit pada 2 lahan yang berbeda frekuensi penanaman serta produktivitas di masing-masing lahan tersebut. Penelitian ini dilaksanakan pada Bulan Juni-Agustus 2023 di Desa Tanjung Laut, Kecamatan Suak Tapeh, Kabupaten Banyuasin. Metode yang digunakan dalam penelitian ini adalah metode survei dengan teknik pengambilan sampel menggunakan Simple Random Sampling dengan mengambil sampel sebanyak 216 pada setiap lahan. Lahan yang digunakan ada 2 yaitu lahan 1 merupakan lahan yang baru pertama kali ditanam tanaman semangka dan lahan 2 yang telah ditanam semangka sebanyak 3 kali penanaman (penelitian ini merupakan penanaman yang ketiga kalinya). Jarak tanam yang digunakan adalah 0,6 x 4.5 (m). Hasil dari penelitian ini adalah penyakit yang sering menyerang tanaman semangka pada penelitian ini adalah penyakit antraknosa yang disebabkan oleh Colletotrichum orbiculare, penyakit Cercospora yang disebabkan oleh Cercospora citrullina, penyakit layu fusarium yang disebabkan oleh Fusarium sp. serta penyakit kuning merambat. Persentase serangan penyakit antraknosa pada penelitian ini yaitu 98.99% pada lahan 1 dan pada lahan 2 99.06% berbeda tidak nyata pada uji T (p-value 0.93), sedangkan keparahan penyakit antraknosa pada lahan 1 46.48% dan pada lahan 2 38.99 (P-value 0.0001). Penyakit layu fusarium yang menjadi penyakit yang paling mengkhawatirkan menyerang pada lahan 1 sebesar 31.48% sedangkan pada lahan 2 sebesar 13.43%. Angka tersebut memiliki hubungan asosiasi antara frekuensi penanaman semangka dengan kejadian penyakit layu fusarium (P-value 0.00001). Produktivitas tanaman semangka pada lahan 1 rerata sebesar 4.04kg/tanaman atau 14.5 ton/ha sedangkan lahan 2 memiliki produktivitas 5.02/tanaman atau 17.9 ton/ha. Hasil uji T menunjukkan adanya perbedaan yang signifikan antara lahan 1 dan lahan 1 (P-Value 0.00003)
Pengendalian Kualitas Produk 456 DI PT DME
Get PDFPT DME merupakan salah satu perusahaan yang memproduksi udang mentah beku, udang masak beku dan produk bernilai tambah (value added). Tujuan dari penulisan tugas akhir ini untuk (1) Mendeskripsikan alur proses produksi 456 di PT DME (2) Pengendalian Kualitas produk 456 pada proses produksi di PT DME. Metode analisis data yang digunakan yaitu metode deskriptif untuk menjelaskan proses produksi 456 dan faktor penyebab kerusakan produk 456 pada proses produksi menggunakan alat bantu diagram alir, histogram, dan fishbone. Diagram alir digunakan sebagai alat untuk menjelaskan alur proses produksi produk 456 dimulai dari tahapan penerimaan bahan baku dan bahan pelapis, produksi, dan pengemasan. Histogram dan fishbone digunakan sebagai alat untuk mengidentifikasi masalah yang paling banyak terjadi kerusakan produk dan mengetahui faktor penyebab kerusakan produk 456 yang tidak sesuai dengan standar perusahaan
Pembentukan Varietas Kedelai Tahan Cekaman Air Dari Genotipe Hasil Mutasi Gen Generasi Mutan Kedua (M2) Dengan Potensi Hasil Yang Tinggi
Get PDFThe aim of the study was to obtain second generation mutant lines (M2) from three gene-mutated soybean seeds, namely M2 Anjasmoro, M2 Argomulyo and M2 Dena-1 which are tolerant to drought stress, water saturation stress and high yield potential. The research was carried out in the Maros district, South Sulawesi, July-November 2022, arranged in a split plot design. The main plot is the application of water consisting of three levels, namely selection of drought stress (C1), selection of water saturation stress (C2) and selection of optimum conditions (C3). Subplots are three second generation soybean seeds resulting from gene mutations (M2), namely: M2 Anjasmoro, M2 Argomulyo and M2 Dena-1. The results showed that the best plant agronomic characters for growth and production factors were M2 Anjasmoro for water saturation stress treatment and M2 Argomulyo and M2 Dena-1 for drought stress treatment. The fastest harvesting age was obtained from the combination of drought stress and M2 Argomulyo, namely 79 days and not significantly different from the combination of drought stress and M2 Dena-1, namely 79.34 days, but significantly different from the other treatment combinations. The production obtained from the seeds resulting from the second generation of gene mutations has begun to show a difference between those given the mutation treatment and their parents, where the combination of water saturation stress and M2 Anjasmoro gave the highest production of 3.20 tonnes/ha higher than the production of its parents which only reached 2. .03-2.25 tonnes/ha. Generation M2 Argomulyo seeds were the longest surviving seeds to recovery from drought stress (38 days), in the sense that M2 Argomulyo seeds were more resistant to drought stress than the other two generations of seeds, namely M2 Anjasmoro (36 days) and M2 Dena-1 (37 days). Meanwhile, the resistance to water saturation was shown by M2 Dena-1 generation seeds, namely 40.67 days, followed by M2 Argomulyo 29.67 days and M2 Anjasmoro 27.33 days.Tujuan penelitian mendapatkan galur mutan generasi kedua (M2) dari tiga benih kedelai hasil mutasi gen, yaitu M2 Anjasmoro, M2 Argomulyo dan M2 Dena-1 yang toleran terhadap cekaman kekeringan dan cekaman jenuh air dengan potensi hasil yang tinggi.
Penelitian dilaksanakan di kabupaten Maros Sulawesi-Selatan, July-November 2022, disusun dalam bentuk Rancangan Petak Terbagi. Petak Utamanya adalah pemberian air terdiri dari tiga taraf yaitu seleksi cekaman kekeringan(C1), seleksi cekaman jenuh air (C2) dan seleksi kondisi optimum (C3). Anak Petak adalah tiga benih kedelai generasi kedua hasil mutasi gen (M2) yaitu : M2 Anjasmoro, M2 Argomulyo dan M2 Dena-1. Hasil penelitian didapatkan bahwa karakter agronomi tanaman terhadap faktor pertumbuhan dan produksi yang terbaik adalah M2 Anjasmoro untuk perlakuan cekaman jenuh air dan M2 Argomulyo dan M2 Dena-1 untuk perlakuan cekaman kekeringan. Umur panen yang tercepat diperoleh dari kombinasi cekaman kekeringan dan M2 Argomulyo yaitu 79 hari dan tidak berbeda nyata dengan kombinasi cekaman kekeringan dan M2 Dena-1 yaitu 79,34 hari, namun berbeda nyata dengan kombinasi perlakuan yang lain. Produksi yang didapatkan dari benih hasil mutasi gen generasi kedua sudah mulai terlihat perbedaanya antara yang diberi perlakuan mutasi dengan tetuanya, dimana kombinasi cekaman jenuh air dan M2 Anjasmoro memberikan produksi yang tertinggi yaitu 3,20 ton/ha lebih tinggi dari produksi tetuanya yang hanya mencapai 2,03-2,25 ton/ha. Benih generasi M2 Argomulyo merupakan benih yang paling lama bertahan terhadap pemulihan dari cekaman kekeringan (38 hari), dalam artian bahwa benih M2 Argomulyo lebih tahan lama terhadap cekaman kekeringan dibanding dua benih generasi yang lain yaitu M2 Anjasmoro (36 hari) dan M2 Dena-1(37 hari). Sedangkan untuk ketahanan terhadap jenuh air diperlihatkan oleh benih generasi M2 Dena-1 yaitu 40,67 hari, disusul M2 Argomulyo 29,67 hari dan M2 Anjasmoro 27,33 hari
KINERJA PRODUKSI AGROINDUSTRI TAHU DI DESA GADINGREJO KABUPATEN PRINGSEWU
Get PDFThis study aims to analyze the raw material procurement system, production performance and profits of tofu agroindustry in Gadingrejo Village, Pringsewu Regency. The method used in this research is a case study on tofu agroindustry in Gadingrejo Village. The location determination was carried out purposively with the consideration that this agroindustry is one of the agroindustries in the largest tofu production center in Gadingrejo District. The research was carried out in May – June 2021. The data analysis method used is a qualitative and quantitative descriptive analysis method. The results of this study indicate that the production performance of tofu agroindustry, seen from the aspects of labor productivity, capacity, quality, speed of delivery, and flexibility, can be said to be good. The six components in the raw material procurement activities from the reality indicators are in line with expectations. The total profit earned by the tofu agroindustry from all types of tofu production is IDR 37,026,332.47/month with an R/C of 1.38, which means that the tofu agro-industry can be said to be profitable and feasible to develop.Penelitian ini bertujuan untuk menganalisis sistem pengadaan bahan baku dan kinerja produksi serta keuntungan agroindustri tahu di Desa Gadingrejo, Kabupaten Pringsewu. Metode yang digunakan dalam penelitian ini adalah studi kasus pada agroindustri tahu Pak Prio di Desa Gadingrejo. Penentuan lokasi dilakukan secara sengaja (purposive) dengan pertimbangan bahwa agroindustri ini merupakan salah satu agroindustri pada sentra produksi tahu terbesar di Kecamatan Gadingrejo. Penelitian dilaksanakan pada bulan Mei – Juni 2021 dan metode analisis data yang digunakan adalah metode analisis deskriptif kualitatif dan deskriptif kuantitatif. Hasil penelitian ini memperlihatkan bahwa, enam komponen permasalahan dalam kegiatan pengadaan bahan baku dari indikator harapan sudah sesuai dengan indikator kenyataan kecuali komponen harga yang belum sesuai dengan indikator kenyataan. Kinerja produksi pada agroindustri belum baik, karena pada indikator fleksibilitas produk oncom tidak sesuai aspek. Keuntungan yang diperoleh agroindustri dari seluruh jenis produksi tahu yaitu Rp37.026.332,47/bulan, yang artinya usaha agroindustri tahu menguntungkan dan layak untuk dijalankan.
Kata kunci: Keuntungan, kinerja produksi, tahu
Study Of Pruning On Growth Recovery Of Oil Palm (Elaeis guineensis Jacq.) Seeds Affected By Leaf Spots In Main – Nursery.
Get PDFFulfilling the need for quality seeds can be done by doing the right pruning and according to the growth phase. This study aimed to obtain the appropriate frequency and amount of midrib pruning to optimize the growth of oil palm seedlings affected by leaf spot in the main nursery. This research was carried out at the Oil Palm Nursery Business Unit of the Lampung State Polytechnic from April to September 2022. The research was carried out using a 2 x 3 factorial randomized design with 6 replications. The first factor is the frequency of pruning which is done every 3 weeks (P1) and every 6 weeks (P2). Factor two consisted of the number of leaves that were pruned, namely 0 leaves (D1), 1 strand (D2), and 2 strands (D3). Observations will be made on the variables of plant height, seedling stem diameter, number of leaves, and the level of greenness of the leaves. Observational data will be analyzed by F test at level = 5%. If the results of the analysis of variance are significant, it will be continued with the further test of the smallest significant difference (BNT) at the level of = 5%. The results showed that the application of pruning once every 3 weeks with 1 pruned leaf showed optimal growth in each observed variable
Alfisol Soil Fertility Before Planting and After Harvest as Meloon Planting Media with Bioboost Fertilization
Get PDFSoil fertility is the potential of the soil to provide nutrients in sufficient quantities in available and balanced forms to ensure optimum plant growth and production. The current availability of nutrients in the soil has decreased due to continuous land use with the use of chemical fertilizers in the cultivation process, plus leaching and erosion by rainwater, not least in Alfisol soils. Therefore, fertilization with organic materials is carried out, namely the provision of Bioboost fertilizer. Bio boost is a biological fertilizer containing superior soil microorganisms, helpful in increasing soil fertility as a result of soil biochemical processes. One of the applications of organic cultivation is the cultivation of melon (Cucumis melo L.) because melon is a plant with high economic value and is profitable to be cultivated as a source of income for farmers. Based on this, a study was conducted to determine the nutrient status of Alfisol soil before planting and after harvesting which was used as a Melon plant with various concentrations of Bioobost fertilization. Furthermore, for the analysis of soil fertility, laboratory analysis was carried out by taking 1 kg of disturbed soil samples that had been air-dried and then analyzing soil properties, namely texture, pH (H2O), C-Organic (%), Nitrogen (%), P2O5 (ppm), K (cmol kg-1), Ca (cmol kg-1), Mg (cmol kg-1), Na (cmol kg-1), Na (cmol kg-1), CEC (cmol kg-1), and base saturation (%). The application of Bio boosts fertilizer showed an increase in the nutrient status of Alfisol soil as a Melon growing from low to moderate categories before planting to medium to high categories after harvest. The more concentration of Bioboost fertilizer given, the soil nutrient status also increases. The concentration of P4 (1100ml bio boost + 400ml water) gave the highest increase in nutrient status.
Keywords: Agrotechnology; organic-fertilizer; soil-chemicalSoil fertility is important in the cultivation process. Soil fertility is the potential of the soil to provide nutrients in sufficient quantities in available and balanced forms to ensure optimum plant growth and production. The current availability of nutrients in the soil has decreased as a result of continuous land use with the use of chemical fertilizers in the cultivation process, plus leaching and erosion by rainwater, not least in Alfisol soils. Therefore, fertilization with organic materials is carried out, namely the provision of Bioboost fertilizer. Bio boost is a biological fertilizer containing superior soil microorganisms, useful for increasing soil fertility as a result of soil biochemical processes. One of the applications of organic cultivation is the cultivation of melon (Cucumis melo L.) because melon is a plant that has high economic value and is profitable to be cultivated as a source of income for farmers. Based on this, a study was conducted to determine the nutrient status of Alfisol soil before planting and after harvesting which was used as a Melon plant with various concentrations of Bioobost fertilization. Furthermore, for the analysis of soil fertility, laboratory analysis was carried out by taking 1 kg of disturbed soil samples that had been air-dried and then analyzing soil properties, namely texture, pH (H2O), C-Organic (%), Nitrogen (%), P2O5 (ppm), K (cmol kg-1), Ca (cmol kg-1), Mg (cmol kg-1), Na (cmol kg-1), Na (cmol kg-1), CEC (cmol kg-1), and KB (%). The application of Bio boosts fertilizer showed an increase in the nutrient status of Alfisol soil as a Melon growing from low to moderate categories before planting to medium to high categories after harvest. The more concentration of Bioboost fertilizer given, the soil nutrient status also increases. The concentration of P4 (1100ml bio boost + 400ml water) gave the highest increase in nutrient status.
Keywords: bioboost; soil-fertility; melo