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<![CDATA[Kajian Fisika Kimia Perairan Danau Bangkau Sebagai Dasar Pengembangan Budidaya Ikan ]]>
<![CDATA[Siswanto, Siswanto]]>;
<![CDATA[Sofarini, Dini]]>;
<![CDATA[Hanifa, Marissa Septa]]>
<![CDATA[ Rekayasa Vol 14, No 2: Agustus 2021 ]]>
Publisher : <![CDATA[Universitas Trunojoyo Madura ]]>
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DOI: 10.21107/rekayasa.v14i2.11263
<![CDATA[Nowadays, in the Danau Bangkau swamp, there is a tendency that some types of fish are increasingly difficult to find and the size of the fish that are still available is relatively small, and the catch of fishermen has decreased. Utilization of fishery potential of Danau Bangkau swamp through the development of aquaculture business is an alternative option that must be implemented. This research was conducted to be able to see the feasibility of the water quality in the Danau Bangkau swamp so that hope it can be basic information for the development of aquaculture in that area. The results showed that the temperature range in the waters of the Danau Bangkau swamp was 28.3-32.4 oC, the brightness was 72-95 cm, degree of acidity (pH) is 6.01-7.2, dissolved oxygen (DO) 1.2-4.3 mg/l, nitrate 0.7-9.8 mg/l, phosphate 0.2-3.31 mg/l and total suspended solids 7-48 mg/l. In general, the value of water quality parameters fulfill the quality standards, except for dissolved oxygen and phosphate parameters. The low levels of dissolved oxygen and high levels of phosphate indicated that there has been pollution in the Danau Bangkau swamp waters so it is not suitable for the cultivation activities.]]>
<![CDATA[Review: Teknologi Simple Phenotyping sebagai Database Pengembangan Robot Pendeteksi dan Pemupuk Nitrogen Padi ]]>
<![CDATA[Syafii, Mohammad]]>;
<![CDATA[Rozik, M. Haidar]]>;
<![CDATA[Febi Torimania, Airlanggia]]>;
<![CDATA[Nur Indriana, Janan Nabilah]]>
<![CDATA[ Rekayasa Vol 14, No 2: Agustus 2021 ]]>
Publisher : <![CDATA[Universitas Trunojoyo Madura ]]>
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DOI: 10.21107/rekayasa.v14i2.10709
<![CDATA[Rice is one of the most important staple food consumed by more than half of the world population, especially in Indonesia where majority of the people consumed rice as daily intake. Precision agriculture is needed to boost production to meet the demand. As limiting factor for plant growth, huge doses of nitrogen fertilizer are deployed, in fact the absorbtion rate of plant was only about 50%. Developing vision-control based robot for fertilizing plant need proper database so that false positive and negative could be avoided. Several previous methods that were available to assest nitrogen status in plant such as a color chart, spectrometer, SPAD-502, and kjedahl. Plant phenotyping is often used for plant breeding, but also very useful in determining nutrient status in plants. Cheap and simple phenotyping using digital camera followed by extracting data through open source platform such as ImageJ can be very useful to generate data for building the database. Here we presented the current progress on plant phenotyping for nitrogen assessment in plant as well as an ImageJ in phenomic era. We also highlight some robotic progress especially vision-based robot, who rely on proper imaging data for their training.]]>
<![CDATA[Pengaruh Interval Pemberian Air Dan Jenis Pupuk Kandang Terhadap Pertumbuhan Dan Hasil Tanaman Kacang Hijau (Vigna Radiata L.) ]]>
<![CDATA[Suhartono Suhartono]]>;
<![CDATA[Achmad Djunaedy]]>;
<![CDATA[Edy Suryono]]>;
<![CDATA[Ali Bekti Widodo]]>
<![CDATA[ Rekayasa Vol 14, No 2: Agustus 2021 ]]>
Publisher : <![CDATA[Universitas Trunojoyo Madura ]]>
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DOI: 10.21107/rekayasa.v14i2.11680
<![CDATA[This study aims to determine the effect of water application intervals and the type of drum fertilizer on the growth and yield of mung bean (Vigna radiata L.), This research was conducted in the greenhouse of Agrotechnology Study Program, Faculty of Agriculture, Trunojoyo University, Madura. The research design used a factorial Completely Randomized Design (CRD) which consisted of 2 factors, factor I, the water supply interval consisted of four levels, namely A1 (1 once a day), A2 (2 once a day), A3 (3 once a day), A4 (4 days). very). Factor II type of manure consists of two levels, namely P1 (cow manure) and P2 (goat manure). The results showed that the water treatment interval had a significant effect on plant height parameters at all ages of observation and leaf number parameters at 27 and 39 DAP. The highest value was obtained by treatment A1. Treatment The type of manure only had a significant effect on the number of leaves at 39 DAP. There was an interaction between the treatment interval of water application and the type of manure on the parameters of wet weight, dry weight, number of pods per plant and seed weight per plant and the best treatment was P1A4.]]>
<![CDATA[Pengaruh Kompetensi, Motivasi dan Pelatihan Aplikasi Sistem Penatausahaan SIMAK-BMN Terhadap Kualitas Kinerja Personil Disbekal TNI AL ]]>
<![CDATA[Arifin, Ahmad]]>;
<![CDATA[Sirait, Binsar Mangaratua]]>;
<![CDATA[Setiawan, Daniel]]>
<![CDATA[ Rekayasa Vol 14, No 2: Agustus 2021 ]]>
Publisher : <![CDATA[Universitas Trunojoyo Madura ]]>
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DOI: 10.21107/rekayasa.v14i2.10865
<![CDATA[The research was carried out with the aim of knowing how influential the implementation of training from the application of the State Property Accounting Management Information System (SIMAK BMN) administration system and the motivation and competence of Disbekal personnel to the improvement of the quality of Disbekal personnel's performance. The data collection technique was by distributing questionnaires, where the research population was personnel in the accounting department of BMN at the Disbekal Head Office and DKI Jakarta Regional Office, the entire population of 320 Disbekal personnel in this study was used as a sample. Data analysis using statistical methods with independent variables are competence, motivation, and SIMAK-BMN training, while the dependent variable is the quality of personnel performance. It was found that SIMAK-BMN training had a significant effect on the quality of the performance of the Disbekal personnel, motivation and competence affected the performance of the Disbekal personnel.]]>
<![CDATA[Efektivitas Isolat-Isolat Bacillus sebagai Pengendali Penyakit Bulai dan Pemacu Pertumbuhan Tanaman Jagung pada Kondisi Terkontrol ]]>
<![CDATA[Khoiri, Syaiful]]>;
<![CDATA[Badami, Kaswan]]>;
<![CDATA[Pawana, Gita]]>;
<![CDATA[Utami, Ciwuk Sri]]>
<![CDATA[ Rekayasa Vol 14, No 2: Agustus 2021 ]]>
Publisher : <![CDATA[Universitas Trunojoyo Madura ]]>
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DOI: 10.21107/rekayasa.v14i2.10270
<![CDATA[The main disease in maize is downy mildew caused by the fungus Peronosclerospora spp.. This pathogen can cause yield losses of up to 100%. Therefore, efforts to control this disease are continuously carried out, including technical culture, assembly of resistant plants, and use of synthetic fungicides. At the farm level, the use of metalaxyl, synthetic fungicides is the most common practice. On the other hand, it has been reported that some Peronosclerospora groups are starting to become resistant to metalaxyl. These problems lead to the need for alternative controls, for example with biological agents. Biological agents from bacterial groups have been developed to control plant disease, but for downy mildew is still limited. The purpose of this study is to screen and test Bacillus spp. ability to suppress downy mildew and promote the growth of maize. The assay was carried out on seeds by invitro to investigate growth-promoting reactions and also testing under controlled conditions in greenhouses to investigate the suppression ability of downy mildew disease development. The results showed B. polymyxa strain BP18, Bacillus subtilis strain BS41, Bacillus sp. strain BT1, and Bacillus sp. strains can stimulate the growth of corn seedlings and suppress downy mildew. The best isolate in suppressing downy mildew was Bacillus sp. strain BT1 with the smallest AUDPC value (3.94) and the highest protection index (82.71%). It is hoped that these results will find potential isolates and have the potential to be developed into biopesticides and biofertilizers.]]>
<![CDATA[Perancangan Mesin Grinder Coffee Brewer Berbasis Photovoltaic ]]>
<![CDATA[Laksono, Dyson Rozak]]>;
<![CDATA[Basri, Muhammad Hasan]]>;
<![CDATA[Herlina, Amalia]]>;
<![CDATA[Hasan, Fuad]]>
<![CDATA[ Rekayasa Vol 14, No 2: Agustus 2021 ]]>
Publisher : <![CDATA[Universitas Trunojoyo Madura ]]>
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DOI: 10.21107/rekayasa.v14i2.10966
<![CDATA[Coffee drinks are in demand by almost all groups of people. In this modern era, along with the high level of people's busyness in activities, so they will be very busy and most of them take a short break to enjoy a cup of coffee as a reliever of drowsiness and an increase in enthusiasm. By designing a photovoltaic-based coffee brewer grinder machine to produce a coffee maker that is suitable for consumption by maintaining a water temperature of 70 oC, so as to produce coffee that is cloudy, light, watery, dark dilute, dark dilute, and dark thick, which is ready to be served for coffee connoisseurs. At the design stage of the on-off temperature control system diagram on the automatic coffee brewer machine heater, the process of making a functional block diagram is carried out. The heating control system on the coffee brewer uses a closed loop control system with feedback using the DHT11 sensor.]]>
<![CDATA[Efektifitas Transportasi dan Lokasi Terhadap Distribusi Logistik di Wilayah Komando Armada I TNI-AL ]]>
<![CDATA[Kartikasari, Wahyu]]>;
<![CDATA[Setiawan, Daniel]]>;
<![CDATA[Fauziah, Erna]]>
<![CDATA[ Rekayasa Vol 14, No 2: Agustus 2021 ]]>
Publisher : <![CDATA[Universitas Trunojoyo Madura ]]>
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DOI: 10.21107/rekayasa.v14i2.10968
<![CDATA[The delays and constraints that distribution centers have in supplying logistics that are often faced are related to transportation and transportation facilities that are not optimal, as well as the location of distribution centers to the remote Koarmada I area. In this study, an analysis of the effectiveness of the implementation of logistics distribution by a logistics distribution agency was carried out and the influence of the implementation of logistics distribution on supply performance to support the Koarmada I Marine Combat Operations. From the measurement model obtained using SEM-AMOS software on the three variables of Location, Transportation and Inventory that builds Logistic Distribution, Location variable has a high value of 0.566. This means that the effectiveness of the implementation of logistics distribution in distributing logistics supplies from the distribution center to Koarmada I is not effective. So that in order to answer the existing problems, the Indonesian Navy needs to plan the formation of a logistics supply distribution organization through organizational validation, building reserve locations that are in strategic positions, building infrastructure and managing logistics supplies in a comprehensive and integrated manner.]]>
<![CDATA[Analisis Dampak Kawasan Sentra Budidaya Lele Terpadu (KSBLT) Kabupaten Tuban di Kecamatan Merakurak Terhadap Usaha Budidaya Lele di Kecamatan Tuban ]]>
<![CDATA[Kurniawan, Andi]]>;
<![CDATA[Pramudia, Zulkisam]]>;
<![CDATA[Amin, Abdul Aziz]]>;
<![CDATA[Nurjannah, Nurjannah]]>;
<![CDATA[Hidayat, Wahyu]]>;
<![CDATA[Kurniati, Evi]]>;
<![CDATA[Lusiana, Evellin Dewi]]>;
<![CDATA[Ardian, Gatot]]>;
<![CDATA[Amenan, M]]>
<![CDATA[ Rekayasa Vol 14, No 2: Agustus 2021 ]]>
Publisher : <![CDATA[Universitas Trunojoyo Madura ]]>
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DOI: 10.21107/rekayasa.v14i2.11859
<![CDATA[As one of the efforts to increase production of catfish culture, the Government of Tuban Regency launched the establishment of The Integrated Catfish Cultivation Center Area (ICACA) in Merakurak Sub-District in 2018. The existence of ICACA makes the program to increase catfish aquaculture more coordinated and increase production of catfish cultivation in Tuban Regency. ICCCA not only has an impact on the aquaculture business in Merakurak District, but also in other sub-districts in Tuban Regency. However, studies that explore the impact of ICACA on aquaculture in other areas are rarely reported. This study analyzes the impact of the existence of ICACA on cultivation business in Tuban District in Tuban Regency. This study uses a descriptive method with a mixed method approach (qualitative and quantitative). The results of this study indicate the factors that are the impact of ICACA in Merakurak District on the development of catfish cultivation in Tuban District. Based on the analysis carried out in this study, the implementation of ICACA in Tuban Regency, especially related to the effect of ICACA on catfish cultivation in Tuban District, needs to be directed to the application of sustainable aquaculture based on the empowerment of local community groups.]]>
<![CDATA[Kinerja Pendekatan Convolutional Neural Network dan Dense Network dalam Klasifikasi Citra Malaria ]]>
<![CDATA[Dafid, Achmad]]>;
<![CDATA[Siwindarto, Ponco]]>;
<![CDATA[Siswojo, Bambang]]>
<![CDATA[ Rekayasa Vol 14, No 2: Agustus 2021 ]]>
Publisher : <![CDATA[Universitas Trunojoyo Madura ]]>
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DOI: 10.21107/rekayasa.v14i2.10735
<![CDATA[Indonesia is an archipelago, which three of its five main island consists mainly, or dense tropical rainforest. This rainforest is main breeding ground for malaria disease that mostly affect regions near said forest. In an effort to treat malaria disease, a diagnostic process is performed to correctly identify the disease. Several image pattern recognition technique been developed and have potential to be utilized as malaria diagnostic tool. In this research, a method is described on designing neural network to detect a blood cell parasitized by malaria. The method consists of utilizing a dense network, and a convolutional neural network, to be trained using publicly available training dataset. Both models’ performance is then compared and analyzed. Before the data is used, a process of padding is performed to resize the input image into 200 x 200 pixels. The resized input data is then used to train both models. From the training and testing, it is found that the dense network achiever 64.78% accuracy. On the other hand, model based on convolutional neural network achiever 94.32%. From analysis, it is found that the size of the model being used is not big enough to achieve better performance. Hence, it is suggested for future research to increase the model size in terms of network width and depth. ]]>
<![CDATA[Tingkat Difusi Oksigen Selama Periode Blind Feeding Budidaya Intensif Udang Vaname (Litopenaeus vannamei) ]]>
<![CDATA[Ariadi, Heri]]>;
<![CDATA[Wafi, Abdul]]>;
<![CDATA[Supriatna, Supriatna]]>;
<![CDATA[Musa, Muhammad]]>
<![CDATA[ Rekayasa Vol 14, No 2: Agustus 2021 ]]>
Publisher : <![CDATA[Universitas Trunojoyo Madura ]]>
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DOI: 10.21107/rekayasa.v14i2.10737
<![CDATA[The diffusion process is a limiting factor that key plays for the oxygen transfer mechanism in the pond water column. The purpose of this study was to determine of oxygen diffusion rate during the blind feeding period of intensive shrimp culture of vaname (L. vannamei). This research was conducted for 30 days blind feeding period of intensive vaname shrimp culture, the research using concept of ex-pose facto causal design. Furthermore, the oxygen diffusion rate is calculated mathematically and a regression test is carried out on the associated water quality parameters. During the blind feeding period, the oxygen diffusion rate fluctuates and dynamically, with a diffusion rate ranging from 0.015-0.028 mgO2/L/hour. This condition is followed by a stabilizing and optimum condition of pond water quality parameter values throughout in the aquaculture. Diurnal periodically, the oxygen diffusion mechanism has an influence on the level of oxygen solubility in ponds. This relationship is modeled by the equation Y = 0.006 + 0.002x. This means that for each diffusion transfer increase of 1 mgO2/L/hour, there will be an oxygen increase in the ponds of 0.002 mg/L. The conclusion of this study is that the oxygen diffusion rate during the blind feeding period of intensive vaname shrimp culture obtained an average at 0.020 mgO2/L/hour, ranging from 0.018-0.023 mgO2/L/hour for 30 days of culture. From the results of this study, it is hoped that research can be developed study regarding of mechanisms, dynamics, and the effect of oxygen diffusion on the intensive shrimp farming ecology.]]>
