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All Journal JTSL (Jurnal Tanah dan Sumberdaya Lahan) Jurnal Solum
Abdul Rauf
Program Studi Agroteknologi Fakultas Pertanian Universitas Sumatera Utara
Agriculture, Biological Sciences & Forestry Environmental Science

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KARAKTERISTIK SIFAT FISIKA TANAH ULTISOL AKIBAT PEMBERIAN BIOCHAR BERBAHAN BAKU SISA TANAMAN KELAPA SAWIT Abdul Rauf; Supriadi Supriadi; Fitra Sawal Harahap; Makruf Wicaksono
Jurnal Solum Vol 17, No 2 (2020)
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (676.312 KB) | DOI: 10.25077/jsolum.17.2.21-28.2020

Abstract

The physical characteristics of ultisols due to the provision of biochar made from palm oil plant residue aims to determine the effect of giving various biochar made from oil palm plant residues on the physical properties of Ultisols. The research design used completely randomized design, consisting of 5 treatments, namely K = without giving biochar, BB = oil palm stem biochar, BP = oil palm frond biochar, BT = oil palm empty bunches biochar and BK = combination of biochar ingredients. Each treatment was repeated 4 times, so that the number of experimental units became 20 units. The parameters observed included soil density, soil porosity, soil texture, soil permeability and available water. The results showed that giving biochar significantly decreased the bulk weight and significantly increased the soil porosity of Ultisols.Key words : biochar, oil palm wastes, physical properties of soil and ultisol
PENGARUH PEMBERIAN PUPUK ORGANIK DAN PUPUK ANORGANIK TERHADAP SERAPAN N, P, K OLEH TANAMAN JAGUNG PADA ULTISOL TAMBUNAN LANGKAT Roswita Oesman; Fitra Syawal Harahap; Abdul Rauf; Rahmaniah Rahmaniah
Jurnal Tanah dan Sumberdaya Lahan Vol. 7 No. 2 (2020)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (412.662 KB) | DOI: 10.21776/ub.jtsl.2020.007.2.25

Abstract

Maize is a cereal commodity that has an important role in supporting food security and food diversification programs. The application of organic and inorganic fertilizers is one of the efforts to increase national maize productivity. This study was aimed to explore the effect of the application of organic and inorganic fertilizers on N, P and K uptake by maize in an Ultisol. Treatments tested were combinations of five levels of organic fertilizer application (0%, 100%, 75%, 50%, and 25% of recommended organic fertilizer dose), and five levels of inorganic fertilizer (0%, 100%, 75%, 50%, and 25% of recommended inorganic fertilizer dose). The twenty-five treatments were arranged in a factorial randomized block design with two replications. Results of the study showed that there was a relationship between N, P and K uptake by maize with maize shoot dry weight, root weight, and shell weight. The highest plant height, shoot dry weight, and root dry weight of the maize were obtained by the treatment of 100% of organic fertilizer. The highest maize shell dry weight and uptake of N, P was obtained by the in the treatment of 75% organic fertilizer.
Co-Authors Fitra Sawal Harahap Fitra Syawal Harahap Rahmaniah Rahmaniah Roswita Oesman Supriadi Supriadi Wicaksono, Makruf