Article Per Year (5 Year)
p-Index From 2021 - 2026
0.23
P-Index
This Author published in this journals
All Journal AGROLOGIA : Jurnal Ilmu Budidaya Tanaman Journal of Multidisciplinary Science: MIKAILALSYS
Marthen Marthen
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Environmental Science Physics Social Sciences Other

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Pengaruh Perlakuan Pencelupan Dan Perendaman Terhadap Perkecambahan Benih Sengon (Paraserianthes falcataria L.) Marthen Marthen; Elizabet Kaya; Herman Rehatta
Agrologia Vol 2, No 1 (2013)
Publisher : Faculty of Agriculture, Pattimura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/a.v2i1.273

Abstract

In developing productive forests, seeds play a crucial role. The seeds of forests tree have physical condition of hard seed coat, especially Leguminoceae family. Silvicultural techniques that can overcome seed coat dormancy are dyeing and submersion of seeds. The knowledge and experience in breaking seed dormancy of Sengon (Paracerianthes falcataria L.) is rare, therefore it is necessary to study how to overcome seed dormancy. The objective of this study was to determine the effect of dyeing and submersion treatments to overcome seed dormancy of Sengon seed to improve its viability. This research used Completely Randomized Design (CRD) with two factors: namely Seed (Factor A), dipped in hot water at 60 º C for (A0 = Control, A1 = 2 minutes, A2 = 4 minutes, A3 = 6 minutes), Factor B, seeds soaked in cold water: (B0 = control, B1 = 6 hours of soaking, B2 = 12 hours, B3 = 18 hours, B4 = 24 hours). The parameters observed were germination percentage, germination rate and vigor index. The results showed that among all parameters observed the interaction of factors A1B2, A2B2 and A3B2 were the best treatment for germination percentage which was equal to 100 percent, the best germination rate of 3.897 days and the best vigor index of 27.02
Efforts to Implement the International Regulations for Preventing Collisions at Sea (COLREGS) to Prevent Collisions on Board the SPB. Sainty Giant Sahrul Angga Saputra; Marthen Marthen; Sigit Sigit
Journal of Multidisciplinary Science: MIKAILALSYS Vol 4 No 2 (2026): Journal of Multidisciplinary Science: MIKAILALSYS
Publisher : Darul Yasin Al Sys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/mikailalsys.v4i2.11086

Abstract

The implementation of the International Regulations for Preventing Collisions at Sea (COLREGs) 1972 is essential for ensuring navigational safety in Indonesia’s strategic waters, where dense international shipping traffic increases collision risks. Although COLREGs have been widely examined, studies specifically addressing watchkeeping responsibilities and navigational aid utilization on Self-Propelled Barges (SPB) in Indonesian crossing situations remain limited. This study aims to analyze the implementation of COLREGs in preventing collisions on SPB Sainty Giant, particularly during crossing situations. A descriptive qualitative approach with a case study design was employed, involving three informants consisting of the Chief Officer, Second Officer, and Able-Bodied Seaman, who were selected using purposive sampling. Data were collected through observation, in-depth interviews, and documentation studies, and were analyzed thematically through data reduction, data presentation, and conclusion drawing. The findings indicate that the implementation of COLREGs on SPB Sainty Giant remains suboptimal, as reflected in watchkeeping officers arriving exactly at the start of their watch without sufficient handover time, crew fatigue caused by excessive daytime workload, and inadequate radar adjustment to weather conditions, which resulted in small vessels remaining undetected. These findings highlight the importance of watchkeeping discipline, navigational aid optimization, and crew competency in strengthening collision prevention. This study contributes to maritime navigation and safety literature by extending understanding of COLREGs application in SPB operations. The practical implications emphasize the need for shipping companies and ship masters to improve watchkeeping procedures, provide regular Radar ARPA training, and strengthen crew understanding of COLREGs through simulation-based training. Further research is recommended to examine COLREGs implementation across different vessel types and shipping routes in Indonesian waters.
Co-Authors Elizabet Kaya Herman Rehatta Sahrul Angga Saputra Sigit Sigit