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Rafli I. Kawulusan
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Agriculture, Biological Sciences & Forestry

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

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v2i3.1512

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
RESPONS PERTUMBUHAN KEMANGI (Ocimum sanctum L) TERHADAP PEMBERIAN PUPUK ORGANIK DAN ANORGANIK Sendy F. Gigir; Jenny J. Rondonuwu; Wiesje J.N. Kumolontang; Rafli I. Kawulusan
COCOS Vol. 5 No. 3 (2014)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v5i3.5977

Abstract

Abstract The study aims to look at and figure out how the basil plant responses to organic and inorganic fertilizer application on plant growth and development . Also to identify the needs of macro nutrients which provides good leverage for the growth and production of basil plants . The Methods of study was conducted by using a randomized block design with 6 treatment, A control with no fertilizer application , treatment B with organic matter ( manure ) and fertilizer N ( urea ) , P ( SP - 36 ) , and K ( KCL ) ; C treatment with N fertilizer ( urea ) , P ( SP - 36 ) , K ( KCl ) ; D treatment by administering organic matter ( manure ) and fertilizer P ( SP - 36 ) , K ( KCl ) ; Treatment of E with the provision of organic matter ( manure ) and fertilizer N ( urea ) , K ( KCl ) ; and treatment by administering F organic material ( manure ) , N fertilizer ( urea ) fertilizer P ( SP - 36 ) . This treatment was repeated 4 times . Fertilization treatment given compiled using minus one test , by making combinations between fertilizing compost , fertilizer N, P , and K by removing one of the elements of the four elements. The variables measured were plant height , number of branches and fresh weight . The results showed a response to the treatment plant fertilizer application . Macro nutrients nitrogen effect on plant growth Keywords : basil , Inorganic Fertilizer , Organic Fertilizer , Fertilizer Influence
KAJIAN SIFAT FISIK DAN KIMIA TANAH PADA TANAH YANG DI TANAMI PADI GOGO (Oryza Sativa) DI DESA WAWONA KABUPATEN MINAHASA SELATAN Maria Idie; Diane D. Pioh; Rafli I. Kawulusan
COCOS Vol. 9 No. 1 (2017)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i6.16874

Abstract

ABSTRACTThis study aims to determine the physical and chemical properties of soil on soil that plantedupland rice in Wawona Minahasa Selatan Village. This study was taken samples on soil that was plantedwith upland rice and land that is not planted in upland rice. This research was conducted by using surveymethod with composite sampling technique in Wawona Minahasa Tenggara Village at two locationsplanted and not planted with upland rice then under the soil sample to soil laboratory of Faculty ofAgriculture Unsrat for analysis of texture, permeability, soil pH, C -organic, N-total, K-available, andPhosphorus. This study found the physical properties of the soil texture of the soil in the village ofWawona at the location of the planted and not planted with gogo rice has the same texture class clayberliat. The permeability of soil at the location of planted upland rice was 7.48 cm / h - 8.98 cm / h whilein the unopested areas 7.23 cm / h-7.73 cm / hr. The soil chemistry properties are: soil pH at planted siteand not planted with upland rice pH value 6,78-6,80 with neutral criterion, C-organic at planted locationand not planted with upland rice have the same criterion that is being (2 , 08% -2.39%), soil nitrogen inthe planted site has low criterion (0.16% -0.17%) and at the unfertilized site has medium criterion (0.22%-0.24%) . Potassium in the planted and unlogged areas of upland rice has the same criteria that is verylow where in the cultivated tilapia criteria (0.068 me / 100g-0.076 me / g) and the unplanted location hasthe criterion (0.078 m / 100g-0.083 M / g).(15,46%) and in non-cultivated land have low criterion (11,56Ppm-12.81 ppm).Keywords of physical and chemical properties.
RESPON TANAMAN BAYAM (Amaranthus tricolor L.) TERHADAP PEMBERIAN BERBAGAI JENIS PUPUK ORGANIK PADA TANAH MARGINAL Sriwani Punuindoong; Wiesje J.N. Kumolontang; Rafli I. Kawulusan
COCOS Vol. 9 No. 1 (2017)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i6.16876

Abstract

ABSTRACTThis study aims to determine the effect of giving various types of organic fertilizer tothe growth and production of spinach plants grown on the marginal soil and which type oforganic fertilizer the best is on the spinach plant. This research was conducted at the villageof Kalasey I for the pot experiment and the analysis of soil, manure and compost wasconducted at the laboratory of Soil Physics and the laboratory of Soil Chemistry and SoilFertility, Faculty of Agriculture Sam Ratulangi University of Manado. This research using byRandomized Block Design Method, where A as a control, B a manure of chicken, C a manureof cow, D a manure of pig, E a manure of goat and F as a compost. This study was conductedin 3 groups to obtain 18 pot experiments.The results showed that the application of various types of organic fertilizer on themarginal soil affected the availability of nutrients needed by plants in the growth andproduction of spinach plants in this case the height of the plant, the number of leaves, thefresh weight of the plant and the dry weight of the plant. Manure of goat provides the highestyield for height of the plant, the number of leaves, the fresh weight of the plant and dryweight of the plant.Keywords : Marginal Soil, Organic Fertilizer
PENGARUH PUPUK KANDANG DAN TANAH BERTEKSTUR LIAT TERHADAP SIFAT KIMIA TANAH TAILING SERTA RESPON TANAMAN JAGUNG MANIS (Zea mays Saccharata) Mei Cen Trisnady; Tommy D. Sondakh; Rafli I. Kawulusan
COCOS Vol. 9 No. 5 (2017)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i1.19179

Abstract

ABSTRACTThe effect mixing of chicken manure and clayed soils (soil colloids) into ex-mining soils (tailings) on soil chemical properties and growth of sweet corn plants were the objective of this study. Tailings and the clay soils were taken from Tatelu Village of Dimembe Subdistrict and from Paniki Mapanget Subdistrict, respectively. This field research was conducted in Tara-tara II Subdistrict Tomohon West, District of Tomohon. Soil analyses were conducted in Soil Chemistry and Soil Fertilizer and in Soil Physics and Soil Conservation Laboratory at Soil Department, Agriculture Faculty UNSRAT Manado. A completely randomized design consisting of 7 treatments in 4 replicates is utilized in experiment using a 30 kg polybags. The results showed that mixing of clay-textured soil and manure on tailings gave significant effect on soil cation exchange capacity, soil P-available, K-available, corn dry weights, and corn cob weights. However, mixing materials have no significant effect on pH, C-organic content, and total N-content. The best combination mixing of materials is 40 persent clay textured soil and 30 tons of chicken manure and tailings.Keywords: Tailings, Clay Textured Soil and Chicken Manure
PENGARUH PEMBERIAN PUPUK KANDANG SAPI TERHADAP PERTUMBUHAN TANAMAN PAKCOY (Brassica rapa L.) PADA LAHAN KRITIS DI KECAMATAN DUMOGA UTARA KABUPATEN BOLAANG MONGONDOW Ni Nyoman Suriantini; Joice M.J. Supit; Rafli I. Kawulusan
COCOS Vol. 13 No. 2 (2021): EDISI APRIL-JUNI 2021
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v3i3.34470

Abstract

ABSTRACT This study aims to determine the effect of cow manure application on the growth of Pakcoy (Brassica rapa L.) on critical land in North Dumoga District, Bolaang Mongondow Regency. The study was conducted in a pot experiment with cow manure treatment consisting of 0 tons/ha as control, 15 tons/ha; 30 tons/ha; 45 tons/ha and Phonska 300 kg/ha. Number of plants per hole 2 plants. The incubation period for cow manure is 1 week. Research time for 2 months. The research method was an experiment with a completely randomized basic design (CRD) and 3 replications. The variables observed were plant height, number of leaves, and wet weight of pakcoy plants. Statistical testing for data that has been tabulated using Analysis of Diversity Fingerprint (Anova) and Analysis of the Least Significant Difference Test (BNT). The results of the study showed that the cow manure treatment had a significant effect on plant height, number of leaves and wet weight of pakcoy plants. The application of cow manure in the P3 treatment (45 tons/ha) gave the highest yield on plant height, number of leaves, and wet weight of pakcoy plants. Keywords : Cow Manure, Pakcoy, Critical Land
Co-Authors Diane D. Pioh Ismianti Huntojungo Jailani Husain Jenny J. Rondonuwu Joice M. Supit Joice M.J. Supit Maria Idie Mei Cen Trisnady Ngantung, Jeanete A.B. Ni Nyoman Suriantini Sendy F. Gigir Sriwani Punuindoong Tommy D. Sondakh Wiesje J.N. Kumolontang