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Jailani Husain
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EROSI DAN INFILTRASI PADA LAHAN HORTIKULTURA BERLERENG DI KELURAHAN RURUKAN Huntojungo, Ismianti; Supit, Joice M.; Husain, Jailani; Kawulusan, Rafli I.
COCOS Vol 2, No 3 (2013)
Publisher : COCOS

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Abstract

ABSTRAKPengolahan tanah intensif yang bertujuan untuk membersihkan gulma dan menciptakan media tumbuh yang gembur pada lahan berlereng menyebabkan tertutupnya pori-pori tanah dan menghambat proses infiltrasi. Proses infiltrasi yang terhambat dapat memicu terjadinya erosi. Pemberian bahan organik (kompos) diharapkan untuk memperbesar kapasitas infiltrasi sehingga dapat mengurangi erosi. Penelitian ini bertujuan untuk mengetahui berapa besar erosi dan infiltrasi yang terjadi pada lahan hortikultura yang berlereng. Penelitian ini dilakukan di lapangan menggunakan metode petak kecil. Hasil penelitian rata-rata erosi yang terjadi pada lahan hortikultura berlereng pada petak teras guludan dengan kompos yaitu 6,54 ton/ha/tahun dan petak guludan tanpa kompos yaitu 4,45 ton/ha/thn. Rata-rata infiltrasi pada lahan hortikultura berlereng dengan perlakuan guludan tanpa kompos lebih tinggi (222552,01 mm/jam) dibandingkan dengan infiltrasi pada lahan hortikultura dengan perlakuan teras guludan dengan kompos (41464 mm/jam).Kata kunci : Erosi, Infiltrasi, Lereng
EVALUASI KESESUAIAN LAHAN UNTUK TANAMAN PINANG (Areca catechu) DI DAS REMU, SORONG , PAPUA BARAT Korwa, Fernando D.; Husain, Jailani; Titah, Tilda; Supit, Joice
COCOS Vol 7, No 4 (2016)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v7i4.12602

Abstract

ABSTRACTThe purpose of this study was to determine the land suitability for areca nut (Areca catechu) in Remu watershed, Sorong, West Papua Province. This research uses descriptive method comprising of survey and map overlay. This research was conducted in the field and the GIS laboratory, Faculty of Agriculture, University of Sam Ratulangi. The research was conducted during ± 4 months, namely from January to April 2015. It was revealed that within 5771.74 ha of suitable area, 2581.76 ha area was classified as the most suitable, 898.7 ha as fairly suitable, and 1730.57 ha as marginally suitable. In addition, 509.78 ha area was evaluated as presently not-suitable and 50.93 ha as permanently not suitable. Further study is required as to provide more specific site information on land suitability for areca nut in the study area.Keywords : GIS, land suitability, areca nut
INFILTRASI DAN PERMEABILITAS PADA TANAH REKLAMASI TAMBANG EMAS Tambunan, Liskawani; Husain, Jailani; Supit, Joice M.J.
EUGENIA Vol 24, No 1 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.24.1.2018.21649

Abstract

ABSTRACT Infiltration and permeability are soil parameters that can be used to describe the extent of land damage caused by the mining process. In accordance with Law No. 4.of 2009 on Mineral and Coal Mining, that reclaiming mining land is obligatory for every company that manages it. This study aims to determine the rate of infiltration and permeability on the reclaimed gold mined land. The research was conducted at the gold mining location of Bakan and Lanut. Infiltration measurements were carried out on straight line transect along the foot slope to the top slope. Measurements were made at two meter distance in 5 cm depth along the transect line direction using the Guelph Permeameter. Hydraulic conductivity was calculated from infiltration data. This research revealed that reclamation has positive effect in increasing of infiltration rate and permeability. Crop dan root growth should have contributed in increasing soil organic matter, root and microbial activities, which leads to improve soil texture and soil structure.Keywords: infiltration, permeability, reclaimed
HARA N P DAN K SECARA KUALITATIF DISEKITAR PERAKARAN TANAMAN JAGUNG (Zea Mays L) DI DESA TATELU RONDOR KECAMATAN DIMEMBE KABUPATEN MINAHASA UTARA Mampioper, Novita; Husain, Jailani; Kaunang, Djoni
COCOS Vol 1, No 1 (2020)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i1.27335

Abstract

ABSTRACT The purpose of this study was to determine the level of nutrient availability, N P and K around corn plants. The results of this study found that the element of nitrogen in the soil around the roots showed relatively low. The element of phosphorus around the roots is moderate and the phosphorus in the soil around the mixed roots is moderate. The element of potassium around the roots is low to high and tanh around the roots are mixed, the potassium content is above the potassium deficiency. Keyword: Hara, N, P, And K, Around Maize Planting, Tatelu Rondor.
LINGKUNGAN HIDUP STRATEGIS TERHADAP PERENCANAAN TATA RUANG KABUPATEN BOLAANG MONGONDOW TAHUN 2011-2030 Lepa, Alex A.; Polii, Bobby J.V.; Husain, Jailani
EUGENIA Vol 17, No 3 (2011)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.17.3.2011.3548

Abstract

ABSTRACT   Strategic Environmental Assessment (SEA) can be done to ensure that the preparation of policy, planning and program (PPP)  on  spatial plan draft  of Bolaang Mongondow Regency  have included the sustainable development. The purpose of this study was (1) to asses whether the PPP have included the linkage, balance, and fairness principles. (2) to identify the environmental impact caused by implementing PPP defined in the Bolmong’s spatial plan. (3) to find out measures in mitigating  negative impacts resulting from PPP. The study was performed using quick appraisal approach by means of matrix analysis, expert judgements, secondary data, field survey, and literature. The result revealed that the score of PPP regarding linkage principle was very good (84.24%) as well as balance principle good (79.59%). The  fairness principle and SEA principle were  very good as well  which were  (83.72%),  (82.52%) respectively.  Identified nine issues of sustainable development resulted  negative and  positive impact . This study implied that mitigating  negative impacts could be achieved by integrating SEA principles to  articles that not fully considering SEA.
SISTEM AGROFORESTRI DATARAN TINGGI DAN DATARAN RENDAH KABUPATEN MINAHASA SELATAN PROVINSI SULAWESI UTARA Suli, Andreas A.T.; Husain, Jailani; Walangitan, Hengki D.
EUGENIA Vol 24, No 1 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.24.1.2018.21651

Abstract

ABSTRACT South Minahasa Regency have a topography that varied from lowland to highland. Until now there has been no research on differences in the performance of agroforestry systems of lowland and highland agroecological zones. The purposes of this study were to analyze the diversity of plant species and to estimate the biomass amount of agroforestry systems at lowland and highland agroecological zones. The research was carried out from October to December 2017 at two different agroecological zones, namely; the highland (Mokobang Village) and the lowland (Blongko Village). The results showed that there were 21 plant species at lowland having 4 plant species in average, while 30 plant species were found in the highland with 6 plant species in average. The biomass of 0.25 to 13.11 Mg ha-1 with an average of 3.47 Mg ha-1 was found at lowland, whereas the highland contained 0.34 to 98.65 Mg ha-1 with an average of 27.40 Mg ha-1 biomass. It is concluded that in South Minahasa Regency the highland agroforestry system had more plant species and had more carbon sequestration than that of lowland.Keywords : agroforestry, highland zone, lowland zone
PEMETAAN WILAYAH RAWAN BANJIR DI KOTA MANADO DENGAN MENGGUNAKAN SISTEM INFORMASI GEOGRAFIS Renwarin, Syanet; Lengkong, Jeanne; Sondakh, Tommy; Husain, Jailani
COCOS Vol 5, No 3 (2014)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v5i3.5978

Abstract

sistem informasi geografis.ABSTRACThis study was conducted during one month (May 29, - June 29, 2014) andimplemented in the city of Manado. This study aims to analyze the flood prone areas in thecity of Manado in order to obtain the level of vulnerability and dissemination of informationin the form of a map by using a Geographic Information System. The study was conducted byusing descriptive method which consists of collecting data and map overlay. While theidentification of flood-prone areas using the method by Hematang (2011). Parametersmeasured were soil type, slope, land use and rainfall. The results of this study show the studyarea prone to flooding in the city of Manado has not vulnerable flood level (an area of603.34 ha), the vulnerability of being (an area of 5467.01 ha), are not susceptible (coveringan area of 6492.39 ha) and the rate is very susceptible (an area of 2180.11 ha) spread in 10districts namely Bunaken, Malalayang, Mapanget, Sario, Singkil, Paal Dua, Tikala,Tuminting, Wanea and Wenang.Key Word : mapping, flood, geographic information system
APLIKASI SISTEM INFORMASI GEOGRAFIS DALAM MEMPREDIKSI EROSI DENGAN METODE USLE DI SUB DAS DUMOGA Surono, Surono; Husain, Jailani; Kamagi, Yani E.B.; Lengkong, Jeane
COCOS Vol 3, No 5 (2013)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v3i5.2372

Abstract

AbstractThe objective this study was to predict erosion rate and erosion hazard level in DumogaSub-watershed. The study is expected to provide spatial information on erosion rateand erosion hazard level in Dumoga Sub-watershed, particularly for spatial planning as wellas soil and water conservation. Erosion was predicted employing USLE while spatial analysiswas conducted using Geographic Information Systems (ArcView 3.3). Rainfall data were collectedfrom three weather stations, erodibility values obtained by analyzing samples fromthree soil types, slope categories were determined using DEM (Digital Elevation Model), valuesof the landuse and soil conservation were determined by means of satellite image interpretationin and field survey as well. It was found that soil erosion ranged from 0.39 to16.800 tonnes /ha/year. The lowest erosion rate occurred on forest land and ricefield withhacingflatslope. The highest erosion rate was identified on farm land having very steep slope.Erosion hazard level varied from verylow to very severe. It is necessary to perform soil andwater conservation measured on the land experiencing severe to very severe erosion hazardas to reduce soil erosion.Keywords: Erosion, Geographic Information System, Watersheed