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Risamasu, Robby G
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ANALISIS KESESUAIAN LAHAN UNTUK PENGEMBANGAN KOMODITI PERKEBUNAN POTENSIAL DI KECAMATAN LEITIMUR SELATAN KOTA AMBON Robby G Risamasu
JURNAL BUDIDAYA PERTANIAN Vol 12 No 2 (2016): Jurnal Budidaya Pertanian
Publisher : Universitas Pattimura

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Abstract

Assessment of chemical properties for 6 soil samples for its fertility in the study area was as follows: Soil pH ranged from acid to slightly acid (5.0-6.0), C-organic low to very high (0.64-7.9%), N-total very low to low (0.09-0.25%), P-available (Bray I) very low to low (0.0-12.4 ppm), very low to moderate Ca (0.0-8.9 me/100 g), very low to high Mg (0.2-4.9 me/100 g), very low to moderate K (0.0-0.3 me/100 g), very low to low Na (0.0-0.1 me/100 g), low CEC (2.7-13.7 me/100 g), very low to very high base saturation BS (5.6-78.9%). The soil fertility status at the study sites only used CEC parameters (cmol/kg), BS (%), organic matter (%) and P2O5 ppm. Soil fertility status in the study area ranged from very low (SR), low (R), to moderate (S). Based on the assessment of the land suitability class on the four plantations of coconut, cocoa, cloves and nutmeg, it can be seen that the plantation commodity group which was considered to have the S3 land suitability class (as marginal) is 4.146 Ha or 86.7%, and N (not suitable) accordingly was an area of ​​636 Ha or 13.3%. With soil physical limiting factors: Rooting medium (rc): Soil depth, - Danger of erosion (eh): Slope. Limiting Factor of Agroclimatology/climate (wa): Rainfall, Nutrient Availability (na): N, P, K.
Evaluasi Kesesuaian Lahan Tanaman Kacang Tanah (Arachis hipogeae L.) di Desa Werwaru Kecamatan Pulau Moa Marlin J Oraplawal; Johanis P Haumahu; Robby G Risamasu
JURNAL BUDIDAYA PERTANIAN Vol 14 No 1 (2018): Jurnal Budidaya Pertanian
Publisher : Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/jbdp.2018.14.1.35

Abstract

This study was aimed to determine the limiting factors for peanut plants found in the field and establish land suitability class for peanuts in Werwaru Village, Moa Island Sub-District Western South Maluku District. The method used in this research was survey method. Distance observation was free survey, by using identification observation type (boring), and pit profile. Based on the actual land suitability assessment, it was known that in the research location there were several characteristic and quality factors of the land that became the limiting factors on the growth of peanut crops, i.e: rainfall factor during growth period (wa), effective depth (r), C-organic (nr), slope (s). Based on the land area improvement action for peanut crops were in the S2 and S3 classes. The recommended land units for peanut plants were: for class S2: L0a1D, L0a3A, L0a3B, L0a3C, L0a3D, L1a1D, L1a3B, L2a1D, L2a3B with area 1942,13 ha or 36.1 percent and S3: L0a2E, L1a2E, L2a2E covering an area of 219.12 ha or 4.1 percent. Keywords: evaluation of land suitability, peanuts, Werwaru Moa Island ABSTRAK Penelitian ini bertujuan untuk menentukan factor-faktor pembatas untuk tanaman kacang tanah yang terdapat di lapangan dan menetapkan kelas kesesuaian lahan untuk tanaman kacang tanah di desa Werwaru Kecamatan Pulau Moa Kabupaten Maluku Barat Daya. Metode yang digunakan dalam penelitian ini adalah metode survey. Jarak observasi yang digunakan adalah free survey, dengan menggunakan tipe pengamatan identifikasi (boring), dan profil pit. Berdasarkan hasil penilaiaan kesesuaian lahan aktual diketahui bahwa pada lokasi penelitian terdapat beberapa faktor karakteristik dan kualitas lahan yang menjadi faktor pembatas terhadap pertumbuhan tanaman kacang tanah yakni: faktor curah hujan pada masa pertumbuhan (wa), kedalaman efektif (r), C-organik (nr), Kemiringan lereng (s). Berdasarkan tindakan perbaikan satuan lahan yang direkomendasikan untuk tanaman kacang tanah yaitu pada kelas S2 dan kelas S3. Satuan lahan yang direkomendasikan untuk tanaman kacang tanah yakni: Untuk kelas S2: L0a1D, L0a3A, L0a3B, L0a3C, L0a3D, L1a1D, L1a3B, L2a1D, L2a3B dengan luas 1942,13 ha atau 36,1 persen dan S3: L0a2E, L1a2E, L2a2E dengan luas 219,12 ha atau 4,1 persen. Kata kunci: evaluasi kesesuaian lahan, kacang tanah, Werwaru Pulau Moa
Analisis Evaluasi Kesesuaian Lahan Beberapa Komoditas Pertanian Tanaman Pangan di Pulau Nusalaut Kabupaten Maluku Tengah Semuel Laimeheriwa; Robby G. Risamasu; Reni Tomasoa; Edison Jambormias
Jurnal Indonesia Sosial Sains Vol. 3 No. 11 (2022): Jurnal Indonesia Sosial Sains
Publisher : CV. Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2432.578 KB) | DOI: 10.59141/jiss.v3i11.729

Abstract

This research was conducted on Nusalaut Island, Central Maluku Regency, aiming to determine the land suitability class of several food crop commodities. Data collection and analysis methods include: (1) analysis of thematic maps, (2) preparation of Land Unit Maps (PSL), (3) field checking using the field survey method, which uses independent survey techniques; (4) observation of land characteristics and quality in each land unit, and (5) analysis of land characteristics and quality in each land unit. The follow-up analysis is in the form of: (1) determining the level of land suitability and (2) producing a map of land suitability classes for food crop commodities on the island of Nusalaut. The results of the assessment of land suitability class on food crops cassava, sweet potato, and corn included in the category of marginally suitable class (S3) with limiting factors of water availability (wa), rooting media (rc), slope (eh) and unsuitable class (N). Cassava plantations had a marginally suitable class (S3) with a limiting factor (wa, rc) of 1452.4 ha or 66.51% and for an unsuitable class (N) of 731.52 ha or 33.50%. Sweet potato plants have a marginally suitable class (S3) with a limiting factor (wa, rc, eh) covering an area of ​​1452.38 ha or 66.5% and for an unsuitable class (N) an area of ​​731.52 ha or 33.50%. Corn plants have a marginal suitable class (S3) with a limiting factor (wa, rc) covering an area of ​​1452.38 ha or 66.5% and for an unsuitable class (N) an area of ​​731.52 ha or 33.50%.
Identifikasi Karakteristik Morfologi dan Sifat Fisik Tanah Akibat Konversi Penggunaan Lahan Berbeda di Negeri Hatu, Kecamatan Leihitu Barat Robby G Risamasu; Irenne Marlissa
JURNAL PERTANIAN KEPULAUAN Vol 4 No 1 (2020): Jurnal Pertanian Kepulauan
Publisher : Fakultas Pertanian, Universitas Pattimura

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Abstract

Field research and laboratory analysis results were obtained on the parameters that experienced a changein the morphology and physical properties of soil including the soil color at each site. It had beenobserved that the color looked brown due to the organic materials associated with Fe, yellow due to ironoxide compounds such as hydroxide Fe2O3.H2O (hydroxide iron) and red was caused by soil parentmaterial. We examined state structure and consistency. The soil structure of the three lands use was arounded cube and consistency ranged from slightly sticky to sticky, wet. Soil water content at each studysite varied according to land use and density of land cover (canopy). The values generated by a heavyvolume of soil in each land use were different. The values produced different soil porosity. This wasrelated to several soil properties, including the type and number of plants, roots, and organic mattercontent.
Karakteristik Fisik, Kimia dan Mineral Tanah Di Lokasi Kampus IAIN- Ambon Kecamatan Sirimau Kota Ambon Anggi Asafita Lattupeirissa; Marcus Luhukay; Robby G Risamasu
JURNAL PERTANIAN KEPULAUAN Vol 6 No 2 (2022): Jurnal Pertanian Kepulauan
Publisher : Fakultas Pertanian, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (238.345 KB) | DOI: 10.30598/jpk.2022.6.2.72

Abstract

The aims of this study was to identify morphological characteristics, clay mineral composition and soil similarity index between two soil profiles at the IAIN campus. The results showed that soil color characteristics of soil layers of both soils are different. Both soil profiles have deep solums with loam to sandy loam texture distribution. The increasing of clay content in the B horizon of both soil profiles is still weak as indicated by the present of a Bw (kambik) horizon. Soil structure is a subangular blocky with fine to coarse sizes and weak to strong structural development. Soil consistency is slightly sticky to sticky. Cation exchange capacity is very low as indicated by low Ca dan Na, medium to high Mg and high Na soil exchangeable cations. The dominant clay mineral in both soil profiles is kaolonit, which is formed by unwell-consolidated weathering materials mixed with weathering-resistant quartz. The silt/clay ratio and CEC values shows similarity between layers between both profiles, however, the Ca/Mg ratio shows dissimilarity. The soil type in both soil profiles is district Kambisol (Typic distrudepts) categorized as a developed soil
Analisis Perubahan Curah Hujan Dan Pemetaan Zona Agroklimat Oldeman Pulau Seram Provinsi Maluku Robby G. Risamasu; Semuel Laimeheriwa; Elia L. Madubun; Marcus Luhukay
Innovative: Journal Of Social Science Research Vol. 3 No. 3 (2023): Innovative: Journal Of Social Science Research
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/innovative.v3i3.2317

Abstract

Adanya kecenderungan terjadinya perubahan curah hujan dalam periode belakangan ini dibandingkan dengan periode sebelumnya, maka berapa besar perubahan curah hujan yang sudah terjadi perlu dianalisis untuk mengetahui kondisi iklim terkini. Berdasarkan hal tersebut, maka telah dilakukan suatu penelitian yang bertujuan untuk menentukan tren perubahan curah hujan dan memetakan Zona Agroklimat Oldeman Pulau Seram yang baru. Penelitian ini menggunakan data curah hujan 60 tahun yang dibagi menjadi 2 periode, yaitu 1962-1991 dan 1992-2021. Pengumpulan data curah hujan bersumber dari berbagai Stasiun Meteorologi yang ada saat ini dan Stasiun Hujan yang pernah ada di Pulau Seram serta melalui pembangkitan data curah hujan menggunakan persamaan matematis sederhana. Analisis tren perubahan curah hujan dilakukan dengan membandingkan nilai rata-rata curah hujan antara dua periode. Penentuan zona agroklimat menggunakan sistem klasifikasi iklim Oldeman dan pemetaannya menggunakan Program Arc View 3.3. Hasil penelitian menunjukkan bahwa telah terjadi peningkatan curah hujan rata-rata tahunan di Pulau Seram dalam 30 tahun terakhir (periode 1992-2021) dibandingkan dengan 30 tahun sebelumnya (periode 1962-1991), yaitu sebesar 18,0% pada wilayah dengan pola hujan monsunal dan 12,2% pada wilayah dengan pola hujan lokal. Berdasarkan sistem klasifikasi iklim Oldeman, di Pulau Seram terdapat 4 zone agroklimat, yaitu A1, B1, C1 dan D1.
Klasifikasi Sebaran Status Kesuburan Tanah Di Kecamatan Teluk Elpaputih (Studi Kasus Areal Kebun Awaya) Risamasu, Robby G; Maitimu, Leonora; Luhukay, Marcus; Tomasoa, Reny
Jurnal Agrosilvopasture-Tech Vol 2 No 2 (2023): Jurnal Agrosilvopasture-Tech
Publisher : Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/j.agrosilvopasture-tech.2023.2.2.473

Abstract

The purpose of this study was to categorize the soil fertility status in Teluk Elpaputih District, Central Maluku Regency. This case study uses the National soil classification system and Soil Taxonomy. The study area is placed on flat-wavy physiography (slopes 0–15 %) by the flexible observation method of the grid. In order to ensure the ground association, observation lines are 800 meters apart and checking paths are located every 400 meters. According to the National Soil Classification System, four types of soil are found: Regosol, Alluvial, Gleisol, and Cambisol. The equivalent of Soil Taxonomy has two orders Entisol and Inceptisol, four suborders Psamment, Aquent, Fluvent, Udepts, four great group Udipasmments, Hydraquents, Udifluvents, Dystrudepts, and four subgoups Aquic Udipasmments, Typic Hydraquents, Typic Udifluvents, and Oxic In addition, the soil fertility status in the study area units ranged from low to high, namely PL0G1 (high), PL0G2 (medium) land units, PL0G3 (medium), and UL1G3 (low).
KARAKTERISTIK DAN KUALITAS LAHAN UNTUK PENGEMBANGAN TANAMAN BAWANG MERAH DI OHOI ABEAN, KECAMATAN KEI TIMUR, KABUPATEN MALUKU TENGGARA Luhukay, Marcus; Risamasu, Robby G Risamasu; Mailuhu, Diana
Community Development Journal : Jurnal Pengabdian Masyarakat Vol. 4 No. 6 (2023): Volume 4 Nomor 6 Tahun 2023
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/cdj.v4i6.22568

Abstract

Wilayah kecamatan Kei Kecil Timur merupakan sentra utama komoditi bawang merah di Kabupaten Maluku Tenggara. Berdasarkan informasi dari Dinas Pertanian dan Dinas Perdagangan Kabupaten Maluku Tenggara, diperoleh gambaran bahwa sekitar 30 – 50 persen stok bawang merah di pasar kabupaten tiap tahunnya berasal dari Kecamatan Kei Kecil Timur. Pada kondisi tertentu ketika panen berlebihan, komdoiti bawang merah dari desa/ohoi ini tidak saja dijual di pasar kabupaten tetapi juga pasar lainnya seperti Ambon, Papua, dan daerah lainnya di Maluku. Kenyataan di lapangan menunjukkan bahwa, hingga saat ini kontribusi komoditi bawang merah bagi peningkatan pendapatan masyarakat tani di desa/ohoi ini belum optimal. Permasalahannya adalah pengetahuan dan keterampilan petani dalam kegiatan usaha tani bawang merah relatif masih rendah; disamping akses petani terhadap alsintan dan sarana prasarana produksi serta sistem manajemen usaha tani yang relatif masih terbatas. tujuan dari kegiatan pengabdian kepada masyarakat ini adalah untuk memberikan pengetahuan dan pemahaman tentang karakteristik dan kualitas lahan yang sesuai untuk budidaya tanaman bawang merah di desa/ohoi Abean.
Kesesuaian Lahan untuk Kacang Tanah (Arachis hypogaea L.) pada Zona Agroekologi-II.5 Kawasan Desa Ohoinol Kei Kecil Timur, Kabupaten Maluku Tenggara Sibualamo, M. Gentha Yudha Sandy; Risamasu, Robby G; Ufie, Conradus; Siregar, Adelina
JURNAL PERTANIAN KEPULAUAN Vol 9 No 1 (2025): Jurnal Pertanian Kepulauan
Publisher : Fakultas Pertanian, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/jpk.2025.9.1.17

Abstract

This study aims to inventory land resources and management practices of groundnut smallholder farms in the Ohoinol agricultural area. assess land suitability for groundnut in ZAE II.5. to create a land suitability map for groundnut based on predictions of relative production potential. The method used was survey method, analytical approach, free survey observation distance by conducting identification (boring) and making complete soil profiles and current land use in the sample area determined in 20 land units. The observation results found three types of soil, namely Rensina (Calsiudols), Litosol (Udorthents), and Cambisol (Eustrudepts), which were carried out on community gardens. Groundnut planting activities take place in the eastern season (summer) twice and the western season (rainy season) once. The length of the growth period (LGP) is about 240 days, compared to the peanut growth cycle of 90-140 days. the LGP has no impact on the peanut growth age of 90-140 (average 115 days) and a decrease in production; in other words, the LGP is optimal, namely 80-100% of the subsistence level production achievement of 1,305 Kg dry beans/ha (VS Class = S1). Assessment of groundnut suitability (rooting depth ± 30 cm) based on soil conditions in land units RL015 and RL215 (42 ha in total) is mostly very suitable and has no effect on reducing subsistence level production
Determination of Plant Season Based on Oldeman Agri Climate Zone and Utilization of Regulation Food Crops Cropping Patterns in Kisar Island, Southwest Maluku Regency Laimeheriwa, Semuel; Madubun, Elia Leonard; Risamasu, Robby Gerald; Luhukay, Marcus
RUMPHIUS Vol 7 No 1 (2025): RUMPHIUS Pattimura Biological Journal
Publisher : Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/rumphiusv7i1p001-008

Abstract

Oldeman agroclimate zone is a classification system used to group areas based on rainfall distribution patterns and soil moisture potential available throughout the year. This system provides a clearer picture of which areas are suitable for certain crops based on their water needs, as well as optimizing the use of existing climate resources through cropping patterns arrangements. This study aims to identify and analyze Oldeman agroclimate zones to determine the right planting season and develop efficient food crop cropping patterns on Kisar Island. This study combines two approaches, namely descriptive and quantitative with the following analysis stages: generating rainfall data, calculating average regional rainfall, determining agroclimate zones, determining planting seasons, and arranging cropping patterns. The results of the study indicate that Kisar Island is included in Agroclimate Zone E3 with a planting season length of 7 months, starting in December and ending in June. Intercropping or mixed cropping patterns are options in corn and legume cultivation. To avoid water shortages during the reproductive phase of the plant, dryland rice planting should be carried out in the period from March to June.
Co-Authors Anggi Asafita Lattupeirissa Edison Jambormias Ferad Puturuhu Irenne Marlissa Johanis P Haumahu Laimeheriwa, Semuel Luhukay, Marcus Madubun, Elia Leonard Mailuhu, Diana Maitimu, Leonora Marlin J Oraplawal Reni Tomasoa Sibualamo, M. Gentha Yudha Sandy Siregar, Adelina Tomasoa, Reny Ufie, Conradus Umanailo, Irmanji