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All Journal Jurnal Penelitian Kelapa Sawit International Journal of Natural Science Studies and Development (IJOSS)
Nuzul Hijri Darlan
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Industrial & Manufacturing Engineering

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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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (450.028 KB) | DOI: 10.22302/iopri.jur.jpks.v24i1.4

Abstract

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.
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (227.781 KB) | DOI: 10.22302/iopri.jur.jpks.v25i3.31

Abstract

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%.
Identification of Morphological Characteristics of Sidimpuan Snake Fruit (Salacca sumatrana Becc.) Edih Nasution, Halida; Rasmita Adelina; Sutan Pulungan; Yusriani Nasution; Nuzul Hijri Darlan
International Journal of Natural Science Studies and Development (IJOSS) Vol. 2 No. 2 (2025): IJOSS
Publisher : PT Inovasi Pratama Internasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55299/ijoss.v2i2.32

Abstract

Sidimpuan snake fruit (Salacca sumatrana Becc.) plants have several varieties, one of which has a distinctive feature in the taste and colour of the fruit flesh. The results of the study from the three locations in Padangsidimpuan City obtained the morphological characteristics of sweet snake fruit (less) having a round oval to long triangular shape with brown to yellowish-brown fruit skin colour. The results of the dendrogram of the sidimpuan snake fruit (Salacca sumatrana Becc) kinship relationship based on the morphological characters of five types of salak, namely sweet snake fruit(less), sweet snake fruit (moderate), sweet snake fruit, white snake fruit, and red snake fruit, obtained 3 clusters from each location. Lubuk Raya Village, the Sidimpuan snake fruit kinship relationship based on five types of snake fruit, has a similarity level of 84 %. Batu Layan Village, the Sidimpuan snake fruit kinship relationship based on five types of snake fruit, has a similarity level of 92 %, and Palopat Maria Village, the Sidimpuan snake fruit kinship relationship based on five types of snake fruit, has a similarity level of 96 %. The results of the identification of morphological characters of snake fruit from three research locations based on the morphological characters of five types of snake fruit show genetic similarities, namely in the shape of the stem, leaf shape, upper leaf colour, lower leaf colour, leaf sheath colour, thorn colour, flower colour, fruit shape, and fruit skin colour
Co-Authors Edih Nasution, Halida Edy Sigit Sutarta Eka Listia Fandi Hidayat, Fandi Heri Santoso Muhdan Syarovy Pradiko, Iput Rahutomo, Suroso Rasmita Adelina Sutan Pulungan Winarna Winarna Yusriani Nasution