PENERAPAN METODE HIDROPONIK SEDERHANA DALAM MENGEMBANGKAN BUDIDAYA SAYURAN UNTUK PEMBERDAYAAN MASYARAKAT DESA PERMATA BARU, KABUPATEN OGAN ILIR

Tujuan dari kegiatan pengabdian masyarakat ini adalah untuk memberdayakan masyarakat Desa Permata Baru agar mampu melakukan budidaya tanaman pada lahan terbatas menggunakan metode hidroponik sederhana untuk dapat memenuhi kebutuhan gizi keluarga. Kegiatan ini dilaksanakan di Desa Permata Baru Kecamatan Inderalaya Utara Kabupaten Ogan Ilir Sumatera Selatan. Metode yang digunakan adalah penyampaian materi  hidroponik, media tanam, nutrisi dan tahapan budidaya sayuran hidroponik. Untuk mengetahui kemampuan ibu-ibu dilakukan praktek langsung budidaya sayuran. Luaran dari kegiatan pengabdian ini adalah kelompok masyarakat di Desa Permata Baru mampu melakukakan budidaya sayuran dengan metode hidroponik sederhana secara 1] mandiri, 2] mampu menyediakan sayuran untuk konsumsi rumah tangga sebagai upaya peningkatan gizi keluarga, dan 3] mampu melakukan budidaya tanaman khususnya sayuran dengan metode hidroponik secara kontinyuitas. Hasil dari kegiatan pengabdian ini ibu-ibu kelompok wanita tani Permata Hijau mampu memproduksi sayuran antara lain Pakcoy putih, Selada merah, Selada hijau, Pakcoy hijau, Pakcoy merah, Caisim, Bayam merah dan Sawi pagoda dengan metode hidroponik sederhana  Kata Kunci: Pemberdayaan, budidaya, hidroponik, lahan terbatas  ABSTRACT  The objective of this community service activity was to empower the people of Permata Baru Village to cultivate plants on limited land using a simple hydroponic method in order to meet family nutritional needs. This activity was carried out in Permata Baru Village, North Inderalaya District, Ogan Ilir Regency, South Sumatra. The method used was by giving courses of hydroponic material, planting media, nutrition and stages of hydroponic vegetable cultivation. Direct hydroponic practice for vegetable cultivation was also carried out to sharpen the participants’ skills. The output of this service activity was that community groups in Permata Baru Village could carry out vegetable cultivation using a simple hydroponic method 1] independently, 2] to produce vegetables for household consumption as an effort to improve family nutrition, and 3] to cultivate plants, especially vegetables with continuous hydroponic method. Through this service activity, it was resulted that women farmer groups in Permata Hijau were able to produce vegetables, including white bok choy, red lettuce, green lettuce, green bok choy, red bok choy, choy sum, red spinach and tatsoi using a simple hydroponic method.  Keywords: Empowerment, cultivation, hydroponic, limited lan

Pemberdayaan Ibu-Ibu PKK melalui Budidaya Sayuran untuk Pemenuhan Pangan Keluarga dan Mewujudkan Program P2L pada Masa Pandemi Covid-19

Masyarakat Desa Tanjung Utara sebagian besar tidak memanfaatkan lahan atau pekarangan karena sering terjadi banjir secara periodik setiap tahun. Saat ini, Indonesia bahkan dunia sedang mengalami covid-19 yang tidak hanya membawa masalah kesehatan masyarakat, tetapi juga berimplikasi luas, seperti kelancaran distribusi pangan. Pemerintah melalui Kementerian Pertanian telah membentuk program Pekarangan Pangan Lestari. Program ini sangat tepat untuk diwujudkan di masa covid-19. Kegiatan ini bertujuan 1) Memberdayakan masyarakat untuk memanfaatkan pekarangan dengan menanam berbagai tanaman sayuran untuk pemenuhan gizi keluarga dan memberi penyuluhan tentang manfaat tanaman sayuran, 2) Mensosialisasikan program Pekarangan Pangan Lestari (P2L).  Melalui berbagai teknik budidaya yang dapat diterapkan dengan membuat demonstrasi plot (demplot) baik langsung lahan pekarangan maupun menggunakan metode-metode lain seperti small garden, hidroponik, vertikultur dan microgreens. Hasil kegiatan pengabdian telah meningkatkan pemahaman ibu-ibu  mengenai budidaya sayuran di pekarangan dan program pekarangan pangan lestari

A new procedure for lung region segmentation from computed tomography images

Lung cancer is the leading cause of cancer death among people worldwide. The primary aim of this research is to establish an image processing method for lung cancer detection. This paper focuses on lung region segmentation from computed tomography (CT) scan images. In this work, a new procedure for lung region segmentation is proposed. First, the lung CT scan images will undergo an image thresholding stage before going through two morphological reconstruction and masking stages. In between morphological and masking stages, object extraction, border change, and object elimination will occur. Finally, the lung field will be annotated. The outcomes of the proposed procedure and previous lung segmentation methods i.e., the modified watershed segmentation method is compared with the ground truth images for performance evaluation that will be carried out both in qualitative and quantitative manners. Based on the analyses, the new proposed procedure for lung segmentation, denotes better performance, an increment by 0.02% to 3.5% in quantitative analysis. The proposed procedure produced better-segmented images for qualitative analysis and became the most frequently selected method by the 22 experts. This study shows that the outcome from the proposed method outperforms the existing modified watershed segmentation method

Review of the Nanostructuring and Doping Strategies for High-Performance ZnO Thermoelectric Materials

Unique properties of thermoelectric materials enable the conversion of waste heat to electrical energies. Among the reported materials, Zinc oxide (ZnO) gained attention due to its superior thermoelectric performance. In this review, we attempt to oversee the approaches to improve the thermoelectric properties of ZnO, where nanostructuring and doping methods will be assessed. The outcomes of the reviewed studies are analysed and benchmarked to obtain a preliminary understanding of the parameters involved in improving the thermoelectric properties of Zn

Technical Guidance on Cultivating Red Onion Plants by Applying KCL Fertilizer in North Tanjung Dayang Village, South Indralaya District, Ogan Ilir

Tanjung Dayang Utara is a village located in the South Indralaya sub-district, Ogan Ilir, South Sumatra. One of the most important inorganic fertilizers frequently used in agriculture is KCl, and considering its role in plant growth, it is crucial to increase the understanding of KCl application for plants. Organic fertilizers, such as chicken manure, are also added to the planting media to provide nutrients in addition to chemical fertilizers. The Bima Brebes variety of shallots are the crops grown in this study, and through this activity, information on shallots and fertilizer was provided, including preparing the planting media and the seedlings, planting, plant maintenance, and harvesting. This activity was carried out from July to September 2023. The activity is aimed at helping the residents of Tanjung Dayang Village comprehend the advantages, nutritional worth, and growth of shallots, as well as the proper techniques of growing shallots, particularly the Bima Brebes variety

Effect of compaction on soil CO2 and CH4 fluxes from tropical peatland in Sarawak, Malaysia

Tropical peatland stores a large amount of carbon (C) and is an important C sink. In Malaysia, about 25% of the peatland area has been converted to oil palm plantation where drainage, compaction and groundwater table control are prerequisite. To date, relationship between land compaction and C emission from tropical peatland is scarcely studied. To understand the effect of compaction on soil carbon dioxide (CO2) and methane (CH4) flux from tropical peatland, a laboratory soil column incubation was conducted. Peat soil collected from a Mixed Peat Swamp forest were packed in polyvinyl chloride pipes to three different soil bulk densities (BD); 0.14 g cm–3, 0.18 g cm–3 and 0.22 g cm–3. Soil CO2 and CH4 flux from the soil columns were measured on weekly basis for twelve weeks. Total soil porosity and moisture retention of each soil BD were also determined using another set of peat sample packed into 100 cm3 soil core ring. Soil porosity decreased while soil moisture retention increased proportionally with increasing soil BD. Soil CH4 flux were reduced approximately by 22% with compaction. On contrary, soil CO2 fluxes were greater (P ≤ 0.05) at compacted soil when infiltration and percolation of rainwater become slower with time, until soil moisture becomes limiting factor. This study suggested that compaction affects water movement and gaseous transport in the peat profile, thus influences C emission from peat soil

Pengaruh Pemberian Dosis Pupuk Hayati Mikoriza pada Pertumbuhan Bibit Dua Varietas Kelapa Sawit di Pembibitan Awal

This study aims to determine the best dose of mycorrhizal biological fertilizer for palm oil seedling growth of DxP Simalungun and DxP Sriwijaya 2 varieties in the pre-nursery stage. This research was carried out by the shade house of the Faculty of Agriculture, Sriwijaya University, Indralaya, Ogan Ilir, from October 2020 to January 2021. The study used the Completely Randomized Design method consisting of eight treatments and four replications, in which there were three plants in each experimental unit. The treatment provided consists of A (Simalungun without mycorrhizal), B (Simalungun given 5 g of mycorrhizal), C (Simalungun given 10 g of mycorrhizal), D (Simalungun given 15 g of mycorrhizal), E (Sriwijaya 2 without mycorrhizal), F (Sriwijaya 2 given 5 g of mycorrhizal), G (Sriwijaya 2 given 10 g of mycorrhizal), and H (Sriwijaya 2 was given 15 g of mycorrhizal). The results showed that the treatment of mycorrhizal biofertilizer with a dose of 5 g is the best treatment to the height of seedlings, the number of leaves, the leaf greenness index, the total leaf area, the diameter of the seedlings, the number of roots, the length of roots, and the dry weight of seedlings. The Sriwijaya 2 variety is more responsive to the provision of mycorrhizal biofertilizers.This study aims to determine the best dose of mycorrhizal biological fertilizer for palm oil seedling growth of DxP Simalungun and DxP Sriwijaya 2 varieties in the pre-nursery stage. This research was carried out by the shade house of the Faculty of Agriculture, Sriwijaya University, Indralaya, Ogan Ilir, from October 2020 to January 2021. The study used the Completely Randomized Design method consisting of eight treatments and four replications, in which there were three plants in each experimental unit. The treatment provided consists of A (Simalungun without mycorrhizal), B (Simalungun given 5 g of mycorrhizal), C (Simalungun given 10 g of mycorrhizal), D (Simalungun given 15 g of mycorrhizal), E (Sriwijaya 2 without mycorrhizal), F (Sriwijaya 2 given 5 g of mycorrhizal), G (Sriwijaya 2 given 10 g of mycorrhizal), and H (Sriwijaya 2 was given 15 g of mycorrhizal). The results showed that the treatment of mycorrhizal biofertilizer with a dose of 5 g is the best treatment to the height of seedlings, the number of leaves, the leaf greenness index, the total leaf area, the diameter of the seedlings, the number of roots, the length of roots, and the dry weight of seedlings. The Sriwijaya 2 variety is more responsive to the provision of mycorrhizal biofertilizers

Preliminary analysis of eddy current and iron loss in magnetic gear in electric vehicle

The inclusion of a high energy density permanent magnet into magnetic gear improves the machine's torque density. However, it also contributes to eddy current loss, especially in a high-speed application such in electric vehicle. In this paper, the losses from eddy current and iron loss are investigated on concentric magnetic gear (CMG). Torque multiplier CMG is designed with 8/3 gear ratio for this study. Iron loss and eddy current loss are compared and discussed. Based on this study, eddy current loss contributes to almost 96% of the total loss. This finding is hoped to direct the researcher to focus more on reducing loss associated with eddy current loss

Pengaruh Pemberian Dosis Pupuk Hayati Mikoriza pada Pertumbuhan Bibit Dua Varietas Kelapa Sawit di Pembibitan Awal

This study aims to determine the best dose of mycorrhizal biological fertilizer for palm oil seedling growth of DxP Simalungun and DxP Sriwijaya 2 varieties in the pre-nursery stage. This research was carried out by the shade house of the Faculty of Agriculture, Sriwijaya University, Indralaya, Ogan Ilir, from October 2020 to January 2021. The study used the Completely Randomized Design method consisting of eight treatments and four replications, in which there were three plants in each experimental unit. The treatment provided consists of A (Simalungun without mycorrhizal), B (Simalungun given 5 g of mycorrhizal), C (Simalungun given 10 g of mycorrhizal), D (Simalungun given 15 g of mycorrhizal), E (Sriwijaya 2 without mycorrhizal), F (Sriwijaya 2 given 5 g of mycorrhizal), G (Sriwijaya 2 given 10 g of mycorrhizal), and H (Sriwijaya 2 was given 15 g of mycorrhizal). The results showed that the treatment of mycorrhizal biofertilizer with a dose of 5 g is the best treatment to the height of seedlings, the number of leaves, the leaf greenness index, the total leaf area, the diameter of the seedlings, the number of roots, the length of roots, and the dry weight of seedlings. The Sriwijaya 2 variety is more responsive to the provision of mycorrhizal biofertilizers.This study aims to determine the best dose of mycorrhizal biological fertilizer for palm oil seedling growth of DxP Simalungun and DxP Sriwijaya 2 varieties in the pre-nursery stage. This research was carried out by the shade house of the Faculty of Agriculture, Sriwijaya University, Indralaya, Ogan Ilir, from October 2020 to January 2021. The study used the Completely Randomized Design method consisting of eight treatments and four replications, in which there were three plants in each experimental unit. The treatment provided consists of A (Simalungun without mycorrhizal), B (Simalungun given 5 g of mycorrhizal), C (Simalungun given 10 g of mycorrhizal), D (Simalungun given 15 g of mycorrhizal), E (Sriwijaya 2 without mycorrhizal), F (Sriwijaya 2 given 5 g of mycorrhizal), G (Sriwijaya 2 given 10 g of mycorrhizal), and H (Sriwijaya 2 was given 15 g of mycorrhizal). The results showed that the treatment of mycorrhizal biofertilizer with a dose of 5 g is the best treatment to the height of seedlings, the number of leaves, the leaf greenness index, the total leaf area, the diameter of the seedlings, the number of roots, the length of roots, and the dry weight of seedlings. The Sriwijaya 2 variety is more responsive to the provision of mycorrhizal biofertilizers

Greenhouse gas mitigation potential of annual and perennial dairy feed crop systems

Dairy production constitutes a significant amount of the total global anthropogenic greenhouse gas (GHG) emission. One of the proposed strategies to mitigate GHG emission from dairy production is by enhancing soil carbon sequestration through promoting the growing of perennial over annual dairy feed crop. We determined the net ecosystem carbon budget (NECB) of a hay and corn field grown side-by-side over three years to compare the GHG mitigation potential of perennial over annual feed crops in Elora, Ontario, Canada. The NECB was determined using measurements of net ecosystem exchange (NEE), total plant carbon content, and carbon content in applied dairy manure. The greenhouse gas balance (GHGB) were determined using the NECB plus the total nitrous oxide (N2O) fluxes measured by a complementary study at the same site. The effect of plowing of the hay field on the NECB and GHGB was also investigated. Our observations indicate that on average over the three study years, NECB of hay (7 ± 51 g C m−2 yr−1) was significantly lower than corn (154 ± 79 g C m−2 yr−1) indicating that corn was a larger carbon source than hay. The three-year average GHGB of 796 and 127 g CO2-eq m−2 yr−1 for corn and hay, respectively, indicated that corn was a larger emitter of GHG than hay. The NECB was the more dominant factor than N2O emissions in influencing the outcome of the annual GHGB. We conclude that hay has a larger potential than corn in sequestering carbon and mitigating GHG emission even when emissions from hay plow-down are included