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All Journal Aceh International Journal of Science and Technology Riwayat: Educational Journal of History and Humanities
Khairullah Khairullah
Universitas Syiah Kuala
Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Social Sciences

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Charge Characteristics and Cation Exchanges Properties of Hilly Dryland Soils Aceh Besar, Indonesia Sufardi Sufardi; Teti Arabia; Khairullah Khairullah; Karnilawati Karnilawati; Sahbudin Sahbudin; Zainabun Zainabun
Aceh International Journal of Science and Technology Vol 9, No 2 (2020): August 2020
Publisher : Graduate Program of Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (975.452 KB) | DOI: 10.13170/aijst.9.2.17565

Abstract

Soil surface charge and cation exchange are important parameters of soil fertility in tropical soils. This study was conducted to investigate characteristics of surface charges and cation exchanges on four soil orders of the dryland in  Aceh Besar district. The soil order includes Entisols Jantho (05o16’58.41” N; 95o37’51.82” E), Andisols Saree (05o27'15.6" N; 95o44'09,1" E), Inceptisols Cucum (05º18’18,37” N; 95º32’48,04” E), dan Oxisols Lembah Seulawah (05o27’19,4” N; 95o46’19,2” E). The charge characteristics of surface charge are evaluated from the parameter of DpH (pHH2O-pHKCl), variable charge (Vc), permanent charge (Pc), and point of zero charges (PZC). In contrast, cation exchange properties are evaluated from several soil chemical properties, such as soil organic matter (SOM), base saturation (BS), cation exchange capacity (CEC), and effective CEC (ECEC). The results show that the four pedons of soil in the hilly dryland of Aceh Besar include a variable charge because it has a PZC, which is characterized by a negative surface charge with a PZC of pHH2O and has CEC dependent soil pH. PZC value varies from 3.21 – 5.26 and sequentially PZC Andisols Oxisols Entisols Inceptisols. The total CEC value differs considerably from ECEC and the sum of cations. CEC total of the soils varies from 12.8 – 34.4 cmol kg-1, whereas the ECEC values vary from 2.72 – 8.66 cmol kg-1. The highest variable charge percentage is found in Andisols Saree. In contrast, the highest permanent charge is found in Inceptisols Cucum and is positively correlated with pHH20, PZC, CEC, and sums of cations or ECEC. Improving soil quality in hilly dryland soils in Aceh Besar District can be done by decreasing the PZC status of soils with organic amendments and fertilizers or increasing the pH by using liming.
Historical Study: Jantho City and Infrastructure, 1979-2020 Khairullah Khairullah; T. Bahagia Kesuma
Riwayat: Educational Journal of History and Humanities Vol 5, No 1 (2022): February 2022, Local History and Learning Media
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jr.v5i1.24295

Abstract

Jantho City is the Capital of the Aceh Besar Regency. This study aims to (1) describe the background of the determination of the Janthoi Settlement as the Capital of Aceh Besar District; (2) describe the initial and continued development process of Jantho City infrastructure 1979-2020; and (3) Identification the factors causing the failure of the development of Jantho City to become a new growth center. This study uses a type of approach that is combined with historical methods. The data collection techniques were carried out using documentation, literature study, and interviews. The results of this study are (1) the determination of the Janthoi Settlement as the Capital of Aceh Besar Regency because of its strategic location for regional development and have a very potential back area; (2) initial development in the form of the construction of the main infrastructure of the city, such as government buildings, roads, post offices, mosques, electricity networks, telephone networks, and other facilities for government purposes. Continued development in the form of supporting urban infrastructures, such as education, health, sports, housing, and economic facilities; (3) several factors cause Jantho City to fail to develop, namely its location opposite to other growth centers in Aceh Besar District, only working in the administrative center, not having a long historical background, no interaction with back areas, armed conflict in Aceh, and unsustainable development.
Historical Study: Jantho City and Infrastructure, 1979-2020 Khairullah Khairullah; T. Bahagia Kesuma
Riwayat: Educational Journal of History and Humanities Vol 5, No 1 (2022): February 2022, Local History and Learning Media
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jr.v5i1.24295

Abstract

Jantho City is the Capital of the Aceh Besar Regency. This study aims to (1) describe the background of the determination of the Janthoi Settlement as the Capital of Aceh Besar District; (2) describe the initial and continued development process of Jantho City infrastructure 1979-2020; and (3) Identification the factors causing the failure of the development of Jantho City to become a new growth center. This study uses a type of approach that is combined with historical methods. The data collection techniques were carried out using documentation, literature study, and interviews. The results of this study are (1) the determination of the Janthoi Settlement as the Capital of Aceh Besar Regency because of its strategic location for regional development and have a very potential back area; (2) initial development in the form of the construction of the main infrastructure of the city, such as government buildings, roads, post offices, mosques, electricity networks, telephone networks, and other facilities for government purposes. Continued development in the form of supporting urban infrastructures, such as education, health, sports, housing, and economic facilities; (3) several factors cause Jantho City to fail to develop, namely its location opposite to other growth centers in Aceh Besar District, only working in the administrative center, not having a long historical background, no interaction with back areas, armed conflict in Aceh, and unsustainable development.
Co-Authors Karnilawati, Karnilawati Sahbudin Sahbudin Sufardi Sufardi T. Bahagia Kesuma Teti Arabia Zainabun Zainabun