ABSTRAKPenelitian ini bertujuan untuk merancang dan membuat alat monitoring kelembaban tanah dan suhu udara pada tanaman berbasis GSM SIM900A dan Arduino Uno, serta mengukur kelembaban tanah dan suhu udara pada tanaman berbasis GSM SIM900A dan Arduino Uno. Penelitian ini menggunakan metode Research and Development. Adapun tahap pengembangan dalam penelitian ini meliputi perencanaan, produksi, dan evaluasi. Sistem monitoring kelembaban tanah dan suhu udara tersusun atas komponen-komponen elektronika, yaitu Arduino Uno sebagai pengendali sistem dari semua rangkaian, sensor DHT11 untuk mengukur suhu udara, GSM SIM900A untuk mengirimkan SMS kepada pemilik tanaman, dan soil moisture sensor untuk mengukur kelembaban tanah, dengan cara manancapkan probe pada tanah. Jika nilai yang dihasilkan sensor kecil berarti tanah dalam keadaan lembab, dan sebaliknya. Selanjutnya, dilakukan pengujian alat secara keseluruhan untuk mengetahui apakah alat berjalan sesuai dengan tujuan. Dari hasil pengujian telah terukur bahwa sistem monitoring kelembaban tanah dan suhu udara berbasis GSM SIM900A dan Arduino Uno dapat mendeteksi kelembaban tanah dan suhu udara kemudian sms gateway bekerja secara otomatis untuk mengirimkan SMS kepada pemilik tanaman.Kata kunci: Sensor DHT11, Soil Moisture sensor, Arduino Uno, dan GSM SIM900A ABSTRACT This research aims to design and make tool monitoring soil moisture and temperature on plants based GSM SIM900A and Arduino Uno, as well as to measure soil moisture and temperature on plant-based GSM SIM900A and Arduino Uno. This study uses the Research and Development. The stage of development in this research include planning, production, and evaluation. System monitoring soil moisture and air temperature are composed of electronic components, namely Arduino Uno as a control system of all circuits, sensors DHT11 to measure air temperature, GSM SIM900A to send an SMS to the owner of the plant, and soil moisture sensors to measure soil moisture, with plug in way the probe on the ground. If the value of the resulting small sensor means when moist soil, and vice versa. Furthermore, the overall testing tools to determine whether the tool run in accordance with the purpose. From the test results have been measured that soil moisture monitoring system and a GSM based air temperature SIM900A and Arduino Uno can detect soil moisture and air temperature then sms gateway works automatically to send an SMS to the owner of the plant.
The sale of fresh fruit bunches in Putri Hijau sub-district has variety of marketing channels from farmers to consumers. The diversity of marketing channels should result in differences in the price levels received by farmers and the costs incurred by each marketing agency, such as freight costs, transportation costs to factories, fruit shrinkage costs, and other costs. This study aims to identify marketing channels and compare the marketing channel efficiency of fresh fruit bunches (TBS) of palm oil formed in Kecamatan Putri Hijau, North Bengkulu. Determination of farmer respondents is done by purposive sampling counted 41 people, and marketing agency respondents use snowball sampling method. The results showed that there are three channels of marketing of oil palm FFS formed, namely Channel I (farmers -collector traders -factories), Channel II (farmers -farmer groups -factories), Channel III (farmers -factories). The most widely used channels by farmers are channel I (farmers -collectors -mills) that have the highest margin and low farmer's share. The merchandise margin and the profit-to-cost ratio indicate that only marketing channel I in Bani Village is efficient. Marketing channel I in Desa Bani Village has a marketing margin value of Rp206/kg with the value of profit to marketing cost ratio of 1.17.
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