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Pradiko, Iput

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Author-ID : 1482807

Agriculture, Biological Sciences & Forestry

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Kuantifikasi Kontribusi Faktor Iklim Terhadap Variasi Produktivitas Tanaman Kelapa Sawit Pradiko, Iput; Hariyadi, Hariyadi; June, Tania
Jurnal Penelitian Kelapa Sawit Vol 31 No 2 (2023): Jurnal Penelitian Kelapa Sawit
Publisher : Pusat Penelitian Kelapa Sawit

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/iopri.jur.jpks.v31i2.222

The yield of oil palm is heavily influenced by various climatic conditions, including rainfall (RF), radiation (Qs), temperature, and humidity. To quantify the impact of these factors, a study was conducted on a 15-year-old palm located in an oil palm estate in Pangkalan Lima Puluh Kota, West Sumatra, Indonesia. The study used climate data from 2011-2019 and yield data from 2015 and 2019. To determine the contribution of RF, Qs, and VPD / vapour pressure deficit, which was estimated from temperature and humidity, a computer-intensive importance metric developed by Lindemann, Merenda, and Gold (LMG metric) was utilized. The results showed that RF, Qs, and VPD collectively accounted for 50.16% of yield fluctuations at the study site. Furthermore, the contribution of climate factors on yield followed the order of VPD > Qs > RF.

Analisis Perilaku Air Di Perkebunan Kelapa Sawit Pada Tanah Spodosol dan Ultisol Menggunakan Soil Moisture Content Monitoring System (SMCMS) Sukarman, Sukarman; Sutiarso, Lilik; Suwardi, Suwardi; Wirianata, Herry; Prima Nugroho, Andri; Primananda, Septa; Syarovy, Muhdan; Pradiko, Iput; Hijri Darlan, Nuzul
Jurnal Penelitian Kelapa Sawit Vol 32 No 1 (2024): Jurnal Penelitian Kelapa Sawit
Publisher : Pusat Penelitian Kelapa Sawit

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/iopri.jur.jpks.v32i1.270

The availability of water is a crucial aspect for optimal growth and productivity of oil palm. This research analyzes soil water behavior by monitoring soil moisture and temperature dynamics using the Soil Moisture Content Monitoring System (SMCMS). SMCMS consists of sensors installed in the field and an internet-based monitoring system. SMCMS was installed in oil palm plantations on Ultisol (A), Spodosol with hardpan breaking and mounding treatment (B), and Spodosol without treatment (C). Soil moisture and temperature sensors were installed at three different depths. The results show that SMCMS can operate automatically and in real-time in measuring water behavior. Based on monitoring and measurement results, it can be seen that the highest soil moisture is at location A, with an average of 46.91%, followed by location B at 38.40%, and C at 29.49%. Spodosol with treatment (B) had the lowest soil temperature with an average of 27.36°C, followed by Ultisol (A) at 27.58°C and control Spodosol (C) at 28.40°C. Furthermore, soil moisture is weakly correlated with soil temperature. Soil temperature has a weak correlation with air temperature. Meanwhile, these two soil water behaviors correlate very weakly with environmental variables, especially rainfall.

DISTRIBUSI PERAKARAN KELAPA SAWIT DAN SIFAT FISIK TANAH PADA UKURAN LUBANG TANAM DAN APLIKASI TANDAN KOSONG SAWIT YANG BERBEDA Pradiko, Iput; Hidayat, Fandi; Darlan, Nuzul Hijri; Santoso, Heri; Winarna, Winarna; Rahutomo, Suroso; Sutarta, Edy Sigit
Jurnal Penelitian Kelapa Sawit Vol 24 No 1 (2016): Jurnal Penelitian Kelapa Sawit
Publisher : Pusat Penelitian Kelapa Sawit

This study was conducted to determine the root distribution and to analyze soil physical factors that affect roots development in different size of planting hole; standard (0.6 m x 0.6 m x 0.6 m), medium ((1 x 1 cm x 0.6 m) with 400 kg empty fruit bunches (EFB)/hole and 740 g urea/hole, and big (2.8 mx 2.8 mx 1 m) with 400 kg EFB/hole and 740 gr urea/hole. This study employed demonstration plot that used a non factorialrandomized block design (RBD) with three treatments (standard, medium, and big hole) and three replications. The results showed that total distribution of oil palm roots in standard, medium, and big planting 3 3 hole are respectively 28.60 g /dm ; 26.69 g/dm ; and 3 24.47 g/dm . Types of planting hole did not significantly affect primary root, but significantly affected secondary and tertiary root distribution. In big planting hole, oil palm has highest secondary and tertiary roots distribution than the others (up to 70%). Increasing ofpermeability, porosity, and decreasing of soil bulk density tends to increase root distribution, especially tertiary. Meanwhile, increase on soil water content is not followed by secondary and tertiary distribution, since booth root types more distributed in the upper soil layer. Better soil tillage; through big planting hole, can improve soil properties and optimizing development of secondary and tertiary roots.

PENYUSUNAN MODEL PENDUGAAN POLA PRODUKTIVITAS BULANAN KELAPA SAWIT BERDASARKAN JELUK DAN HARI HUJAN Pradiko, Iput; Rahutomo, Suroso; Ginting, Eko Noviandy; Siregar, Hasril Hasan
Jurnal Penelitian Kelapa Sawit Vol 25 No 3 (2017): Jurnal Penelitian Kelapa Sawit
Publisher : Pusat Penelitian Kelapa Sawit

Oil palm requires evenly distributed rainfall throughout the year to achieve optimum yield. This study was aimed to estimate monthly oil palm yield based on depth of rainfall and rainy days data. Yield data were collected from 12 years old of oil palm grown on mineral soils at 15 plantations in North Sumatra. The yield data were monthly data of 2016 and 2017 for database and comparison, respectively. Data of depth of rainfall and rainy days were from 2012-2016. Data were analysed using linear and non-linear correlation between depth of rainfall versus yield and rainy days versus yield at time lag of 0, 6, 12, 18, 24, 30, 36, 42, and 48 months. The results of correlation analysis were used to construct an equation model for estimating monthly yield patterns. Based on values of Root Mean Square Error (RMSE), MeanAbsolute Bias Error (MABE), and Mean Absolute Percentage Error (MAPE) between estimation and actual monthly yield of 2017, it could be conluded that estimation model based on rainy days were more accurate than when it was based on depth of rainfall. The values of RMSE, MABE, MAPE of estimation model based on rainy days were 0,337; 0,275; 15,482%, respectively; while based on depth of rainfall the values were 0,367; 0,296; 16,594%, respectively.

EFEK KEKERINGAN DAN GANGGUAN ASAP TERHADAP EKOFISIOLOGI DAN PRODUKTIVITAS TANAMAN KELAPA SAWIT DI SUMATRA SELATAN Syarovy, Muhdan; Pradiko, Iput; Listia, Eka; Darlan, Nuzul Hijri; Hidayat, Fandi; Winarna, Winarna; Rahutomo, Suroso
Jurnal Penelitian Kelapa Sawit Vol 25 No 3 (2017): Jurnal Penelitian Kelapa Sawit
Publisher : Pusat Penelitian Kelapa Sawit

Prolonged dry season, land fire, and haze disturbance occurred during El Niño 2015 in Indonesia. A study had been conducted to identify impacts of prolonged dry season and haze disturbance on ecophysiology of oil palm in Dawas Estate, South Sumatra. The study was conducted by collecting data of precipitation, visibility, oil palm fronds addition, rate of photosynthesis, Photosinthetically Active Radiation (PAR), and Elaeidobius kamerunicus activity on mature and immature palm before, during and after the incidence of drought and haze disturbance. T test was used for statistics analysis. The results showed that water deficit was recorded in July, August, September and October, it was 45, 92, 80, and 148 mm respectively. Dry month (precipitation was ≤ 60 mm) was 2 months, while dry spell occurred 3 times in June to July (33 days), August to September (42 days), and September to October (40 days). Haze disturbance occurred in August to November, it had decreased visibility to 80%. During drought stress and haze disturbance, there was decrease in fronds addition, photosynthesis rate and bunch productivity in following year. In addition, haze disturbance had decreased number of Elaeidobius kamerunicus visitting female flowers up to 95%.

Co-Authors Edy Sigit Sutarta Eka Listia Fandi Hidayat, Fandi Ginting, Eko Noviandy Hariyadi, Hariyadi Hasril Hasan Siregar Heri Santoso Hijri Darlan, Nuzul Lilik Sutiarso Muhdan Syarovy Nuzul Hijri Darlan Prima Nugroho, Andri Primananda, Septa Rahutomo, Suroso Sukarman Sukarman Suwardi Suwardi Tania June Winarna Winarna Wirianata, Herry

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