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All Journal Jurnal Penelitian Kelapa Sawit Menara Perkebunan Jurnal Agronomi Tanaman Tropika (JUATIKA) AGROSCRIPT Journal of Applied Agricultural Sciences Warta Perkaretan Agrivet: Jurnal Ilmu-ilmu Pertanian dan Peternakan Jurnal Green House
Eka Tarwaca Susila Putra
Universitas Gadjah Mada
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Materials Science & Nanotechnology

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Journal : Jurnal Penelitian Kelapa Sawit

 1 
DAMPAK PEMBERIAN KALIUM DAN CEKAMAN KEKERINGAN TERHADAP SERAPAN HARA DAN PRODUKSI BIOMASSA BIBIT KELAPA SAWIT (Elaeis gueenensis Jacq.) Wan Riski Fauzi; Eka Tarwaca Susila Putra
Jurnal Penelitian Kelapa Sawit Vol 27 No 1 (2019): Jurnal Penelitian Kelapa Sawit
Publisher : Pusat Penelitian Kelapa Sawit

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (809.821 KB) | DOI: 10.22302/iopri.jur.jpks.v27i1.74

Abstract

Droght stress is the main limiting factor on growth and production of oil palm. Beside used tolerance planting materials, increasing nutrient status especially potassium also influences increasing plant tolerance to drought stress. This research was a simulation study in a greenhouse to determine the effect of potassium and drought stress on oil palm seedling. The research was conducted in Desa Madurejo, Kecamatan Prambanan, Kabupaten Sleman, Region of Yogyakarta Indonesia by random complete block design. The treatment consists of two factors, first factor were potassium factor consist of 0%, 50%, 150%, and 200% standart dosage and second factor were drought stress consist of three levels, field capacity (FTSW 1), moderate drought stress (FTSW 0.35) and severe (FTSW 0.15) with three replications. The results showed that fertilizing potassium increased the content and uptake of K and Cl in plants, increased the uptake of Mg roots, reduce the N content of the roots and reduce the content of Ca and Mg in plant canopy. Drought stress had an impact on decreasing the content and uptake of N, P, and Cl in plants as well as decreasing the dry weight of plant biomass. The provision of Potassium has not affected the production of biomass of oil palm seedlings in drought conditions.
Penambahan Kalsium Meningkatkan Kandungan Pektin pada Bibit Kelapa Sawit Tercekam Kekeringan (Elaeis guineensis Jacq.) Endah Nurwahyuni; Eka Tarwaca Susila Putra
Jurnal Penelitian Kelapa Sawit Vol 28 No 3 (2020): Jurnal Peneltian Kelapa Sawit
Publisher : Pusat Penelitian Kelapa Sawit

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/iopri.jur.jpks.v28i3.111

Abstract

Long drought due to climate anomalies results in physiological damage to oil palm which is characterized by frond fracture to the decreased productivity. One of the efforts to increase the resistance of oil palm to drought is through the addition of calcium. This study aimed to determine the effect of calcium on hormonal changes (as secondary messenger), the rate of photosynthesis till the content of pectin as a reinforcing component of cell walls which is expected to reduce the risk of frond fracture due to drought. The treatment was arranged in factorial 3 x 4 in the random complete block design (RCBD) split-plot. The first factor was the dose of calcium application which was 0 (control/without calcium), 0,04 g, 0,08 g, and 0,12 g. The second factor was the intensity of drought stress consisting of severe stress, moderate stress, and control/field capacity with an intensity of one week after achieving target weight. Data that fulfilled the assumptions of homogeneity and normality were then analyzed using variance analysis at a level of accuracy of 5% and continued with DMRT. The results showed that calcium can increase the resistance of oil palm seeds through increased GA content, decreased ABA content and increased photosynthetic rates in all soil moisture conditions, but varied according to the intensity of drought.
Co-Authors Andi Nur Cahyo Andi Nur Cahyo Benito Heru Purwanto Budiastuti Kurniasih Denis FABRE Dewi Hs, Endang Sri Endah Nurwahyuni Muhammad Parikesit Wisnubroto Novi Yulanda Sari Pascal MONTORO Prapto Yudono Rudi Hari Murti Toyip Toyip Tri Rini Nuringtyas Wan Riski Fauzi