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All Journal Biospecies Jurnal Sains Teh dan Kina PHARMACY: Jurnal Farmasi Indonesia (Pharmaceutical Journal of Indonesia) Jurnal Elkasista
Eko Pranoto
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Kajian Monokultur dan Tumpangsari Tanaman Teh dengan Cabai di Beberapa Kemiringan Lereng terhadap Perubahan pH Tanah dan Ca-dd Restu Wulansari; Eko Pranoto
Jurnal Penelitian Teh dan Kina Vol 21 No 2 (2018): Jurnal Penelitian Teh dan Kina
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/pptk.jur.jptk.v21i2.148

Abstract

The utilization of tea area especially on young tea period to intercropping was one of the efforts to keep the income stability, especially on tea smallholder plantation scale. Chilli was one of the plants planted on the tea area by the intercropping system. But, chili has different habitat and characteristics than tea, especially on soil pH characteristics. The optimum pH to the growth of Chili on 6–7, otherwise tea on 4,5–5,6. Generally, chili needs dolomite around 3,66–6,83 tones per hectare if the difference of pH around 1,0–2,0. The research aimed to evaluate the soil pH and exchangeable-Ca (Ca-dd) on Monoculture and Intercropping tea with chili on the selected slope of the area. The experiment was conducted at the Experimental Garden of Research Institute for Tea and Cinchona, West Java, on the young tea area age two years. The Split Split Plot experimental design was used with three repetitions. As Main Plot was Planting System (Intercropping and Monoculture System); while the sample position (between plant and row of the plant) was as Sub Plot and Sub Sub Plot was Land Slope (8-15%, 16-25%, dan >25%). The result shows that the intercropping system tea with chili caused the Ca-dd and soil pH higher compared to that monoculture system. But, the land slope was not significantly influencing the Ca-dd and soil pH. The highest Ca-dd was on the row of the plant with Intercropping system on slope 16-25% treatment amount 8,82 m.e/100 g soil and it had a correlation also to the highest pH i.e 5,43. If the intercropping system still used chicken manure as a fertilizer, it will be caused by the tea plant was calcium poisoning.
Teknologi RANCANG BANGUN PEMILAH JERUK OTOMATIS BERDASARKAN UKURAN DAN BERAT: elektronika Bintar wijaya; Eko Pranoto
Elektronika Sistem Senjata Vol 7 No 1 (2026): Jurnal Elkasista
Publisher : Pustaka Poltekad

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54317/elka.v7i1.935

Abstract

Kegiatan pascapanen buah jeruk pada tahap sortasi berdasarkan ukuran dan bobot masih banyak dilakukan secara manual sehingga rentan terhadap inkonsistensi hasil dan pemborosan tenaga kerja. Penelitian ini mengembangkan prototype conveyor pemilah jeruk siam otomatis yang memadukan dua parameter sortasi secara bersamaan yaitu dimensi fisik buah dan beratnya. Pada sisi klasifikasi ukuran, sistem menggunakan tabung sortir mekanis berdiameter berjenjang yang dilengkapi lima sensor proximity inframerah E18-D80NK. Buah dikelompokkan ke dalam grade D (5 cm), grade C (6 cm), grade B (7 cm), dan grade A (lebih dari 7 cm). Pengukuran bobot dilakukan oleh empat unit load cell 5 kg yang dikonfigurasi dalam susunan jembatan Wheatstone dan dikuatkan oleh modul HX711. Seluruh data dari kedua subsistem diolah oleh mikrokontroler ESP32 dan ditampilkan pada LCD 20x4. Evaluasi kinerja memperlihatkan bahwa sensor proximity E18-D80NK berhasil mendeteksi dan mencacah buah dengan rerata akurasi 98,75%, sementara sensor load cell mencatat rerata akurasi 98,30%. Durasi sortasi pada skenario campuran tercatat 2,05 menit. Temuan ini membuktikan bahwa sistem conveyor otomatis yang dikembangkan layak diterapkan sebagai solusi sortasi jeruk yang lebih efisien dan konsisten dibanding metode konvensional.
Co-Authors Anis Kusumawati Bintar wijaya Dwi Ningsih Susilowati DWI NINGSIH SUSILOWATI Ernin Hidayat Fani Fauziah Fani Fauziah Faris Nur Fauzi Athallah Fitrianti Widya Lestari Gilang Fauzi Hani WACHYUNI Hingdri Hingdri Indri Hapsari Mamik Setyowati Mieke Rochimi Setiawati Pudjo Rahardjo Restu Wulansari Restu Wulansari Sastrika ANINDITA Sulistiawati PRATIWI Yati Rachmiati