Protech Biosystems Journal

Karakteristik fisik dekomposisi limbah pertanian dengan menggunakan bio-aktifator yang berbeda

Muliatiningsih Muliatiningsih — Thu, 14 Dec 2023 00:00:00 +0800

This study aims to determine the physical characteristics of agricultural waste decomposed with different bio-activator sources. The method used in the research is an experimental method using a one-factor Completely Randomised Design, namely the source of Bio-Activator with 4 (four) treatments, namely B0: Commercial EM 4, B1: PGPR bamboo, B2: MOL, B3: Coconut water.Â Each treatment was repeated 3 times so that 12 experimental units were obtained. The parameters observed included moisture content, biomass weight change, temperature and compost colour. The research was conducted in the Greenhouse of the Faculty of Agriculture, Muhammadiyah Mataram University. The data obtained were statistically analysed using Analysis of Variance at the 5% level. Treatment results that have a significant effect will be continued with the BNJ test at the 5% level. The results showed that the temperature value, the final weight of compost and the percentage difference in compost weight were not significantly different in all treatments.

Pengaruh perlakuan spesimen uji tarik baja karbon rendah terhadap kekuatan tarik untuk poros roda traktor

Karyanik Karyanik — Fri, 15 Dec 2023 00:00:00 +0800

Penelitian ini bertujuan untuk mengetahui kekuatan tarik pada spesimen material baja karbon rendah terhadap pengaruh perlakuan spesimen. Metode yang digunakan dalam penelitian adalah metode eksperimental dengan menggunakan mesin Universal Testing Machine dan Vernier Caliper yaitu perlakuan spesimen yang menggunakan perlakuan pemanasan dan maupun pendinginan dengan temperatur atau suhu tertentu. Parameter yang diamati meliputi, tegangan, regangan, diameter awal dan diameter ahir. Penelitian dilaksanakan di laboratorium perbengkelan Fakultas Pertanian Universitas Muhammadiyah Mataram dan Laboratorium Teknik mesin Universitas Mataram. Data yang diperoleh dianalisa secara matematis. Hasil pengujian di dapat baja karbon mengalami peningkatan tegangan (stress) pada puncak titik 350 N/mm² dan mengalami perpatahan pada titik 250 N/mm² pada regangan (strain) ke 31%.

Analysis of the chemical and physical properties of dried moringa leaves (Moringa oleifera l.) at different drying temperatures using a tray dryer machine

Devi Tanggasari, Nurfaidawati Nurfaidawati, Ahmad Reza Jatnika — Wed, 03 Jan 2024 00:00:00 +0800

Moringa or (Moringa oleifera l.) is a very common plant in tropical and subtropical climates. West Nusa Tenggara is one of the areas with a relatively high level of drought, where the dry season is relatively longer than the rainy season. This affects the type and character of plants in the West Nusa Tenggara region in adapting to these climatic conditions. One of them is the moringa plant which easily adapts to hot weather and altitude above sea level. Moringa is a plant with various benefits, such as food, medicine, cosmetics, and others. The purpose of this study was to analyze the effect of different drying temperatures on the chemical and physical properties of dried Moringa leaves using a tray dryer. This study used a 1-factor Completely Randomized Design (CRD) with three temperature treatments for 2 hours of drying with three replications. The temperature treatments in the study were: 45Â°C, 50Â°C and 55Â°C for 2 hours. The research results from the analysis of the chemical properties of dried moringa leaves from the three temperature treatments can be seen that the effective temperature treatment at 55Â°C, namely: water content (21.67%), ash content (0.51%), protein content (19.43%). The results of the analysis of the physical properties of the color test using the Colorimeter application showed that the highest value was at 50Â°C with a value of (77.93) and the organoleptic test of the panelist's preference level for the texture of dried Moringa leaves was seen at 55Â°C with a value of (4.08).

Effect Of Dosage And Frequency Of Liquid NPK Fertilization On Growth Of Cutting Seedlings Robusta Coffee (Coffea chanephora)

Wed, 03 Jan 2024 00:00:00 +0800

The Robusta coffee plant (Coffea canephora) is included in the Rubiaceae family and the Coffea genus. The problem in breeding Robusta coffee plants is that Robusta coffee seeds cannot be developed generatively because of the type of cross-pollination, so they must be propagated vegetatively by cuttings, namely slow root growth and rooting. weak so shoot formation is slow. To overcome this problem, liquid NPK fertilizer (24:20:05) was used with the aim of producing optimal cutting growth. The aim of this research was to determine the effect of the dose and frequency of application of liquid NPK fertilizer (24:20:05) on the growth of Robusta coffee cuttings. The method used was a factorial Randomized Block Design (RAK) consisting of 2 factors and 3 replications. Factor 1 consists of F0: 0 ml/polybag, F1 (25 ml/polybag), F2 (50 ml/polybag), F3 (75 ml/polybag), F4 (100 ml/polybag). The second factor is the frequency of fertilization (M) which consists of M1: Application once a week M2: Application once every 2 weeks M3: Application once every 3 weeks. The research results showed that there was an interaction between the dose of liquid NPK fertilizer and the frequency of fertilization on Robusta coffee cuttings (1) which had a very significant influence on the observed variables of stem diameter, number of branches and leaf area. (2) Giving a dose of liquid NPK fertilizer to Robusta coffee plant cuttings has a very real influence on all variables. (3) The effect of fertilization frequency on Robusta coffee plant cuttings has a very real influence on the variables of stem diameter and number of branches.

Analisis Produktivitas Jagung Menggunakan Metode Objective Matrix (OMAX) (Studi Kasus PT. Santosa Utama Lestari)

Muhammad Anis Abqory, Devi Tanggasari — Thu, 04 Jan 2024 00:00:00 +0800

Produksi jagung di PT. Santosa Utama Lestari mengalami kenaikan dan penurunan yang tidak menentu, beberapa faktor dapat mempengaruhi produktivitas jagung seperti terjadinya downtime pada mesin, bahkan pada musim penghujan terkadang produksi jagung tidak mencapai target produksi. Pengukuran produktivitas dapat dilakukan dengan beberapa metode, salah satunya adalah metode Objective Matrix (OMAX). Tujuan penelitian ini yaitu untuk menentukan tingkat produktivitas pada bagian produksi di PT Santosa Utama Lestari serta dapat memberikan rekomendasi perbaikan produktivitas di bagian produksi PT Santosa Utama Lestari. Produktivitas pada PT. Santosa Utama Lestari cenderung fluktuatif. Produktivitas total tertinggi dicapai pada bulan April tahun 2022 dengan nilai 1000, produktivitas total terendah terjadi pada bulan Agustus tahun 2022 dengan nilai 25. Untuk meningkatkan produktivitas PT. Santosa Utama Lestari perlu meningkatkan kualitas dan ketersediaan bahan baku, memotivasi pekerja dan memberikan waktu istrirahat yang cukup, melaksanakan perawatan mesin, dan melaksanakan pengawasan terhadap pemakaian tenaga listrik. Rekomendasi perbaikan yang diperoleh adalah perusahaan perlu meningkatkan jumlah bahan baku menjadi 4890,01 ton, tenaga kerja 11 orang, jam kerja mesin 214,04 jam dan energi listrik 54,32 Kwh.

Effect of Dose and Type of Liquid Organic Fertilizer on Early Growth of Cocoa Seedlings (Theobroma Cacao L.)

Muhammad Faisal Gunawan, Gatot Subroto, Dyah Ayu Savitri, Oria Alit Farisi — Fri, 05 Jan 2024 00:00:00 +0800

The purpose of this research was to determine the effect of dose and type of liquid organic fertilizer as well as the interaction between dose and type of liquid organic fertilizer on the early growth of cocoa seedlings. This study used various kinds of POC namely GDM, NASA, Hantu and Guano. To support the success of POC application, different doses were also used in the treatment. The research was conducted in the greenhouse of Patrang Sub-district, Patrang District, Jember Regency in 2023. This study used a complete randomized design (CRD) with 2 factors. The first factor is the dose consisting of 3 levels, namely D1 (10ml/plant), D2 (15ml/plant) and D3 (20ml/plant). The second factor is the type of liquid organic fertilizer consisting of 4 levels, namely P1 (GDM), P2 (NASA), P3 (Superior plant hormone (Hantu)) and P4 (Guano). The results showed there was no interaction between dose and various kinds of liquid organic fertilizers. The application of dose affected the wet weight of plants and leaf area. Various kinds of liquid organic fertilizers affected the number of branches of cocoa seedlings.

Testing the Effectiveness of Drip Irrigation Technique Design in Chili Cultivation on Dry Land

Suwati Suwati, Muanah Muanah, Basirun Basirun — Fri, 05 Jan 2024 00:00:00 +0800

Dry land is productive land that can operate all year round, but with minimal water availability it is one of the obstacles for chili farmers. Therefore, the right solution for this problem is by applying drip irrigation techniques. The purpose of this research was to design and test the performance of the design on chili cultivation in dry land. This study used an experimental method with a direct experimental design on community agricultural land, by making 3 treatment groups, namely P1: surface drip irrigation, P2: subsurface drip irrigation, and P3: open channel irrigation. In this study, the parameters to be studied were designing and conducting performance tests on emitter discharge, water drop uniformity, and wetted areas. The results showed that the drip irrigation design consisted of several components, including primary reservoirs, secondary reservoirs, emitters and pressure regulators. The results of the performance test of the drip irrigation technique design can be said to be feasible to apply based on the discharge value and the drop uniformity coefficient, and the growth of chili plants, both with subsurface and above-surface drip irrigation techniques, does not have a significant effect. So it can be concluded that the method of providing water with subsurface and above-surface irrigation is both said to be effective and efficient