Article Per Year (5 Year)
p-Index From 2020 - 2025
0.882
P-Index
This Author published in this journals
All Journal AGROLOGIA : Jurnal Ilmu Budidaya Tanaman JURNAL BUDIDAYA PERTANIAN Science Nature
Osok, Rafael M
Fakultas Pertanian Universitas Pattimura Ambon
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science

Published : 13 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 4 Documents
Search
Journal : AGROLOGIA : Jurnal Ilmu Budidaya Tanaman

 1 
Pengaruh Bahan Organik dan Azotobacter terhadap pertumbuhan Jagung di Tailing terkontaminasi merkuri dari Pulau Buru Reginawanti Hindersah; A. Marthin Kalay; Rafael Osok
Agrologia Vol 7, No 2 (2018): Agrologia: Jurnal Ilmu Budidaya Tanaman
Publisher : Faculty of Agriculture, Pattimura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/a.v7i2.762

Abstract

Characteristics of mineral-mine tailings deposited in agricultural areas do not meet the requirements for food crop cultivation. The objective of the experiment was to obtain the information on the improvement of plant growth planted in mercury-contaminated tailings after adding organic matter and nitrogen fixing bacteria, Azotobacter. The greenhouse trial was set up in randomized factorial design which tested the Azotobacter inoculation consentrations and organic matter doses. There was no interaction effect between the two treatments on the growth of four-week old corn. Both organic matter and Azotobacter had a positive impact on vegetative growth of corn.
Efek Penggunaan Lahan Terhadap Degradasi Tanah Pada Kebun Campuran Di Kecamatan Kairatu Kabupaten Seram Bagian Barat Propinsi Maluku Silwanus M Talakua; Rafael M Osok
Agrologia Vol 7, No 1 (2018)
Publisher : Faculty of Agriculture, Pattimura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/a.v7i1.352

Abstract

Land use is the most influential factor in soil degradation due to erosion. The objectives of this research are to know the level of land degradation and the factors that influence the land use area, the upper vegetation density and the lower vegetation density. This research uses the method of measuring ground damage indicator in the field. The results showed that single, wide land use, upper vegetation density and lower vegetation density had an effect on soil degradation on mixed garden land use; while simultaneously, wide land use, upper vegetation density and lower vegetation density have an effect on soil degradation on mixed garden land use. The most influential factors for soil degradation in mixed gardens are the area of land use and lower vegetation density.Keyword:  Degradation of soil, land, vegetation density, mixed gardens.
Morphometric and Hidrological Characteristics of Way Apu Watershed Regency Of Buru Rafael M. Osok; Silwanus M. Talakua; Alfredo Manusama; Pieter J. Kunu
Agrologia Vol 9, No 1 (2020): Agrologia: Jurnal Ilmu Budidaya Tanaman
Publisher : Faculty of Agriculture, Pattimura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/a.v9i1.1058

Abstract

Morphometry is important characteristics to understand hydrological processes of a catchment.The research purpose was to study  the morphometry and flood discharge characteristics of the Way Apu Watershed. Morphometrics data were measured using topographic maps and SIG-ArcView. The frequency distribution of rain was calculted using the Log-Pearson Type III, Gumbel, Normal, Log-Normal methods, and the design rainfall was determined according to 2, 5, 10, 25, 50, and 100 years return periods. The flood discharge was calculated using the rational method, while the hydrograph unit was established using the Nakayasu method. The result showed that the watershed roundness ratio is 0.46 and the elongated ratio is 0.86 indicating the elongate watershed form. The design Rainfall of the return periods of 2, 5, 10, 20, 25, 50 and 100 years range from 37.59 - 185.14 mm (Log Pearson Type III), 41.32 - 180.28 mm (Gumbel), 47, 68 - 139,98 mm (Normal), and 36,82 - 203,66 mm (Log-Normal). The Smornov-Kolmogorof test results show that the Log-Pearson Type III, Gumbel, and Log-Normal methods are suitable to calculate the design flood discharge. Data of the design flood discharge of Gumbel is suited for 25 years of waterwork plan, while Log-normal is suited for 100 years plan. Based on the Nakayasu Synthetic Hydrograph Unit, the river capacity of the Way Apu watershed is 21.37 m3/sec.
Penetapan Kelas Kemampuan Lahan Dan Arahan Rehabilitasi Lahan Das Wai Batu Merah Kota Ambon Provinsi Maluku Rafael M Osok; Silwanus M Talakua; Dhanang Supriadi
Agrologia Vol 7, No 1 (2018): Agrologia: Jurnal Ilmu Budidaya Tanaman
Publisher : Faculty of Agriculture, Pattimura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/a.v7i1.355

Abstract

Land use planning requires a proper consideration, so that the function of land can take place continuously and sustainably. The objectives of the research were to establish the land capability class of Wai Batu Merah watershed its land use management in accordance with each land capability class. The research method was survey with synthetic and analytical approaches, and  flexible observation distance following physiographic change, soil type and land use within landunits. The results of the study showed that Wai Batu Merah watershed has 6 class and 12 sub-class land capability of II.B,KE3,e1, III.e2,  III.C, IV.b2, IV.D,b2, IV.D, VI.e4, VI.E, VII.e5, VII.F,e5, VII.F, and VIII.t5 with limiting factors of  slope steepness, erosion sensitivity, percentage of gravel and rock, and soil texture. Land use management planning  in the Wai Batu Merah watershed includes intensive, medium, and limited agriculture, intermediate and limited grazing, agroforestry, protection forest, forest, home garden, biopores and organic materials.Keywords: Land Capability Class, Wai Batu Merah Watershed
Co-Authors A.M. Kalay Alfredo Manusama Calvin T Tutuarima Daniel Torimtubun Dhanang Supriadi Dhanang Supriadi Elizabeth Kaya Ellisa J Gaspersz Ellisa J Gaspersz Hendrico F Hehakaya Hetti May Rini Pintu Batu Pieter J Kunu Reginawanti Hindersah Sandhy H Luhulima Silwanus M Talakua Silwanus M Talakua Silwanus M Talakua Silwanus M Talakua Silwanus M Talakua Silwanus M. Talakua Silwanus M. Talakua Silwanus Talakua Siregar, Adelina Sisilia Wariunsora Willem A Siahaya