Secara umum, persyaratan untuk menanam kelapa sawit pada ketinggian 0-400 m di atas permukaan laut. Tingginya permintaan Minyak Sawit Mentah di pasar internasional telah menyebabkan pemerintah memperluas perkebunan kelapa sawit ke ketinggian tinggi. Budidaya kelapa sawit di dataran tinggi akan mempengaruhi tingkat produksi dan produktivitas. Penelitian ini dilakukan di Perkebunan Bah Birong Ulu PT. Perkebunan Nusantara IV dari Januari hingga September 2019. Metode penelitian yang digunakan adalah metode deskriptif kualitatif. Hasil penelitian menunjukkan bahwa (1) produktivitas kelapa sawit tertinggi pada 2017 adalah 1.280 ton/ha/tahun dan produktivitas terendah pada 2015 adalah 1.071 ton/ha/tahun. (2) Realisasi produksi untuk TBS kelapa sawit dan RJT lebih rendah dibandingkan dengan potensi produksi. Padahal realisasi produksi untuk RBT lebih tinggi jika dibandingkan dengan potensi produksi.
Harvest is one of determining factors to produce quality Fresh Fruit Bunches (FFB). Quality FFB is determining factors for Free Fatty Acids (FFA) and yield of the resulting oil. To produce good CPO potential, synergy is needed between the plantation part and the palm oil mill part. The research method used a descriptive method, namely to explain the harvest system and its relation to the quality of oil palm fruit. Observation data in the form of a harvest system consisting of Harvest Density Number (AKP) and random system used, Analysis of palm oil potential in the form FFB Analysis and CPO Yield. The Results showed that the harvesting system in division 1 Tanah Raja PT BSP used fixed sleigh and the potency test of palm oil showed that the CPO yield was 21.22% and FFA was 2,42%.
Kalium merupakan unsur hara makro bagi tanaman yang berperan penting dalam proses metabolisme, mulai dari fotosintesis, translokasi asimilat hingga pembentukan pati, protein, dan aktivator enzim. Tandan Kosong Kelapa Sawit (TKKS) merupakan limbah pabrik kelapa sawit yang jumlahnya sangat melimpah. Pada setiap ton tandan kosong kelapa sawit mengandung unsur hara 1,5% N, 0,5% P, 7,3% K, dan 0,9% Mg yang dapat digunakan sebagai pupuk pengganti tanaman kelapa sawit. Penelitian ini dilaksanakan di Afdeling IV Kebun Sei Silau PT. Perkebunan Nusantara III. Penelitian ini dilakukan dengan metode deskripsi, keadaan hara kalium pada dua macam perlakuan pada tanah dan tanaman pada lahan aplikasi tanpa aplikasi tandan kosong kelapa sawit di Afdeling IV Kebun Sei Silau PT. Perkebunan Nusantara III. Hasil penelitian menunjukkan kadar K total pada lahan aplikasi TKKS adalah 2830,50 ppm sedangkan pada lahan tanpa aplikasi TKKS adalah 2054,15 ppm. Kandungan K dapat ditukar pada lahan aplikasi TKKS yaitu 2,41 me/100 g sedangkan pada lahan tanpa aplikasi TKKS memiliki angka yaitu 0,84 me/100 g. Serapan hara K Tanaman pada lahan aplikasi TKKS adalah 0,77% dan serapan hara K Tanaman di lahan tanpa aplikasi TKKS adalah 0,69%. Serapan hara K tanaman pada kedua sampel dikategorikan kurang (defisiensi).
Oil palm plantations are often damaged by pests, especially the horn beetle (Oryctes rhinoceros) The damage caused can potentially suffer losses, either directly or indirectly. This study aims to determine the effectiveness and intensity of the horn beetle catch obtained by combining fruit traps with various colors of lights in the Immature Plants (TBM) area, the lights used are 18 watt emergency lights. This study used a non- factorial Randomized Block Design (RAK) research method with five levels of treatment, namely: P0 (white light + pineapple), P1 (yellow light + pineapple), P2 (blue light + pineapple), P3 (green light + pineapple). . light + pineapple). light + pineapple). , P4 (red light + pineapple) with four replications to obtain 20 treatment samples. The parameter observed was the number of beetles (O. rhinoceros) trapped. The results of this study showed that P1 was significantly different from treatment P2, P3 and P4 but not significantly different from treatment P0, in general, treatment P1 was the most effective treatment with the acquisition of horn beetles trapped as many as 146 tails. This is because yellow light has a color spectrum length of 560-590 nm which best corresponds to the wavelength of the color spectrum that is acceptable to insects, which is 300-650 nm. In addition, yellow light is more unified and gives a more dominant light reflection in the dark.
Fertilization in oil palm plants plays a very important role, more than 50% of the cost of the plant is used for fertilization. The hybrid oil palm currently being developed is generally very responsive to fertilization. Fertilization is a very important factor to increase the productivity and quality of the production produced. Fertilization is useful to provide nutrients needed by plants in order to carry out physiological processes that produce good growth and production. Fertilization costs are relatively high, approximately 30% of the total production costs or 40-60% of the total maintenance costs. The costs required to carry out fertilization activities are very large so that proper fertilization planning is needed to be effective and efficient. In productive plants can be done effectively 4T fertilization techniques, namely the right type, right dose, right on target, and on time. Based on this, observations were made on the study of fertilizer costs on plantations. This research was conducted in Division F of Sei Kalam Gardens, PT. Asam Jawa, Labuhanbatu Selatan Regency, North Sumatra Province. The time for the research to begin in March 2019 until May 2019.
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