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KAJIAN KESESUAIAN DOLINE UNTUK BEBERAPA TANAMAN SEMUSIM DI DAERAH KARST GUNUNGSEWU DENGAN PENDEKATAN GEOMORFOLOGI (Studi kasus di kecamatan Ponjong dan Rongkop, Gunung Kidul, Yogyakata)

Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 2, No 1 (2002)
Publisher : Faculty of Agriculture, Sebelas Maret University

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Abstract

The observation has a goal to obtain the answer on land problem at Ponjong and Rongkop Districts which lie on Gunungsewu area based on geomorphology approach. The case which is being observed is it low of seasonal agriculture result in that area has a relation to the land. As we know that the area (gunungsewu karst topography) has specifi cation for doline and connical hills. The observation is done by using geomorphology survey approach which emphasizes to some aspects: land form, soils, geomorphology process, interview and bibliography. Population in the observation is karst topography and karst farmers and for the sample are doline and karst farmers (land owners) that have been choosen based on purposive. And for the land sample was appointed based on geomorpho-doline character observation. In analyzing the doliize used qualitative and quantitative methods by matching between land quality and seasonal plants growth requirenments (gogo ewe, corn, peanut and soya bean). The observation result was known that : (1) doline has marginal land for the seasonal plants (gogo rice, corn, peanut and soya bean) with main limit factor is lack ofphosphor, (2) karst farmer cultivate and fertilize still traditional ways only in soils crack depth (x < 25 cm) and was done in fourth season (18th September- 12th October) so in fifth season (13th October - 8th November) gogo rice, peanut and soya bean seeds begin growing, (3) the best plant pattern is tumpangsari but in making the pattern of plant has to be tried by seeing the doline contour to the center of doline.

KAJIAN PENGELOLAAN LAHAN BERDASARKAN TINGKAT BAHAYA EROSI DAN POLA KONSERVASI TANAH DAN AIR DI DESA NGADIPIRO KECAMATAN NGUNTORONADI, KABUPATEN WONOGIRI

Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 8, No 1 (2011)
Publisher : Faculty of Agriculture, Sebelas Maret University

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This research is aimed to identify the land management which has been done in Ngadipiro in order to overcome the erosion problem, to know and to analyze the class of erosion hazard, to get a soil and water conservation technique alternative which are appropriate to the this surrounding. This research is phenomenological qualitative descriptive research where the variable approach is done by field survey. The field unit map is got by pilling up on one another the map of the field use, soil depth and the declivity of the slope. The sample is taken by purposive sampling technique. Data and information about field management is got by analyzing directly to the field and by interviewing the informant key. Data analysis of the erosion prediction erosion hazard degree is done by using the formula of USLE. The result of the research shows that the erosion danger degree can be classified in to 5 class, they are: very light (SPL 4), light (SPL 3), medium (SPL 5), heavy (SPL 2, 6, 8, and 10), very heavy (SPL 1, 7, 9, 11, and 12), erosion that happenes in the field research (190,08 ton/ha/year/land units) has already been dangerous for the soil productivity preservation because it is already in the limit which is allowed (16,05 ton/ha/year/land units). The recommended soil and water conservations are: a) mechanical water and soil conservation: making the construction bench terrace in SPL 1, 5, 6, 7, 8, 9, 10, and 12, making rorak in SPL 2, 3, 4, 6, 7, 10, and 12, b) vegetative soil and water conservation technique: application agroforestry system by path planting in SPL 6, 7, 10, and 12, the use of soil covering plant in every SPL, for most in SPL 11, c) fertilizing as means to improve ingredients organic matter of land in every SPL. Keywords: Erosion hazard degree, land management, soil and water conservation

KAJIAN BAHAYA EROSI PADA LAHAN KERING DI SUB DAS SAMIN KABUPATEN KARANGANYAR

Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 5, No 2 (2008)
Publisher : Faculty of Agriculture, Sebelas Maret University

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Samin sub watershed at Karanganyar District, Central Java has been degraded by erosion. The shed needs to be managed seriously. This research was done at Samin sub watershed at 650 – 1800 above sea level from June to November 2006. The aim of the research is studying erosion hazard on each land unit in Samin sub watershed and land management have been done farmer. This research used phenomenology qualitative description method by interpretation of theme maps and Iconos image satellite, and survey. Soil and land management sampling method was done by purposive sampling. The result of this research are land in research area very sensitive to occur land degradation because erosion hazard in light until very heavy; intercropping system in land unit 1, 2, 3, 4, 5, 6, 7, and 8 is the best method to land conservation and diversification of agriculture yield; soil management method and intercropping system have been done by farmer are the best of land conservation Keywords: Erosion, Samin Sub Watershed, upland, intercropping, soil management

EVALUASI KESESUAIAN “BEBERAPA JENIS TANAMAN” DALAM SISTEM WANATANI DI WILAYAH DESA NGADIPIRO KECAMATAN NGUNTORONADI KABUPATEN WONOGIRI

Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 7, No 2 (2010)
Publisher : Faculty of Agriculture, Sebelas Maret University

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The research was conducted in July 2008 until October 2008, in Ngadipiro, Nguntoronadi, Wonogiri. The research is aimed to evaluated the appropriateness of the plant teak, cashew fruit, melinjo, ground nut and grass the setaria as a part in the agroforestry system in Ngadipiro, Nguntoronadi, Wonogiri and to give some kind of agroforestry planting pattern model among teak, cashew fruit, melinjo, ground nut and grass the setaria in Ngadipiro, Nguntoronadi, Wonogiri. The research is fenomological qualitative description research it means that the research takes the data from the field which is supported by quantitative analysis in laboratory. Set of analysis in the research is set of field map and the soil sample taking technique is purposive sampling method. While, to know the field appropriateness class, the research compares the quality and the field characteristic with the plant growing condition from PPT Bogor 2003. The planting pattern model is based or plant functions and according to planting pattern model proposal from PPLH 2008. To know assess the egibility of is effort farmer the researcher does the B/C ratio analysis and studies plant use value. The result of the research shows that the appropriateness of teak, cashew fruit, melinjo, ground nut and grass the setaria in Ngadipiro is around S3 to N (marginal appropriate to inappropriate). There are three planting pattern model which can be used to lessening level of erosion danger in Ngadipiro. They are Model A (The mix of teak, cashew fruit, ground nut and grass the setaria), Model B (The mix of teak, melinjo, ground nut and grass the setaria) and Model C (The mix of teak cashew fruit, melinjo, ground nut and grass the setaria) While from the B/C ratio analysis and assess the egibility of is effort farmer which based on the use of the plant shows that of teak, cashew fruit, melinjo, ground nut and grass the setaria is appropriate to be tried and to be developed in the research field in Ngadipiro. Keywords: agroforestry, plant approprianteness, planting pattern

Implementasi Authentic Assesment dalam Pembelajaran Fisika untuk Menilai Kinerja Siswa

Media Eksakta Vol 2, No 2 (2006)
Publisher : Media Eksakta

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Penelitian tindakan kelas ini bertujuan memperoleh penilaian hasil belajar fisika yang autentik, dan mengetahui bagaimana pengaruh pelaksanaan authentic assesment dalam menilai kinerja siswa terhadap peningkatan minat, motivasi dan semangat dalam mempelajari mata pelajaran fisika pada setiap siklus. Subyek penelitian adalah siswa kelas VIIIA SMP Negeri 1 Palu yang mengikuti mata pelajaran tahun pelajaran 2005/2006 dengan jumlah 40 siswa yang terdiri atas 21 siswa laki-laki dan 19 siswa perempuan. Penelitian ini dilaksanakan dalam dua siklus, tiap-tiap siklus terdiri atas tahap perencanaan, pelaksanaan observasi, dan refleksi. Hasil penelitian menunjukkan bahwa implementasi authentic assesment melalui model pembelajaran kooperatif dapat menilai hasil belajar fisika siswa yang autentik, dan meningkatkan minat, motivasi, dan semangat dalam mempelajari mata pelajaran fisika pada setiap siklus. Hal ini didukung hasil analisis yang menunjukkan adanya peningkatan kinerja siswa dari 69,59 (kategori baik) pada siklus I menjadi 77,05 (kategori baik) pada siklus II, adanya peningkatan hasil fisika siswa pada tes formatif siklus I yang mencapai 70,50 menjadi 74,03 pada siklus II, dan peningkatan hasil belajar fisika siswa berdasarkan portofolio pada siklus I dan II masing-masing sebesar 71,93 (kategori baik) dan sebesar 79,26 (kategori baik).

Status Unsur Hara Ca,Mg, dan S sebagai Dasar Pemupukan Tanaman Kacang Tanah (Arachis hypogaea L.) di Kecamatan Punung Kabupaten Pacitan

Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 9, No 2 (2012)
Publisher : Faculty of Agriculture, Sebelas Maret University

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Title  : Nutrient Status Ca, Mg, and S as The Basic Fertilizing of The Groundnut (Arachis hypogaea L.) in Punung, Pacitan. The research was done in May until October 2008. The aims of this research were to know the status of soil N, P, K and determine the fertilizing and the soil management strategy for peanut in Punung, Pacitan. This research used fenomenological qualitative descriptive method that supported by laboratory analysis and cuisioner about agriculture activity by the farmers at Punung. The research soil variables are pH, organic-C, N total, P available, K available, CEC, base saturation, and soil tekstur. The result of this research shows that the globally available Ca soil  status in Punung is medium (6,08-7,87me%), avalaible Mg soil provided status globally is high(4,05-5,25me%) , and S soil provided status globally is also very low. S nutrient must be added Land Map Unit (LMU) 2, 5, 9, 14, 15 to reach yield 2 ton/ha and 2,5 ton/ha of groundnut. Soil management strategy is done by adding S fertilizer adjusted with the plant need by drowning it into the soil nearby the root area with two times fertilizing, ZA fertilizer addition to keep S supply, the addition organic matter, the use of mulsa, plant rotation and soil management adjusted tho the slope condition.

EFEK PERIMBANGAN PUPUK ORGANIK DAN PUPUK ANORGANIK TERHADAP SIFAT KIMIA TANAH ANDISOL TAWANGMANGU DAN HASIL TANAMAN WORTEL (Daucus carota L.)

Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 6, No 2 (2009)
Publisher : Faculty of Agriculture, Sebelas Maret University

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This research was carried out from August 2008 to February 2009. The purpose of this research were to know the effect of litter quality of Gliricidia maculata and Salacca edulis to inhibition of nitrification and efficiency N benefit in Alfisols. This research were conducted in Blumbang, Sub district Tawangmangu, Karanganyar Regency. The aim of this research to know the effect of balance organic fertilizer and inorganic fertilizer to Andisols soil chemistry at Tawangmangu. This research was experimental research which is used RCBD (Randomized Complete Block Design) with single factor: trial pattern P1 (0% organic fertilizer + 0% inorganic fertilizer), P2 (50% inorganic fertilizer), P3 (100% inorganic fertilizer), P4 (50% organic fertilizer), P5 (50% organic fertilizer + 50% inorganic fertilizer), P6 (50% organic fertilizer + 100% inorganic fertilizer), P7 (100% organic fertilizer), P8 (100% organic fertilizer + 50% inorganic fertilizer), P9 (100% organic fertilizer + 100% inorganic fertilizer). Statistical analysis to test about treatment influence used F-test and Kruskal-wallis test, for comparing inter-treatment used Duncan Multiple Range Test (DMRT) and Mood Median, for finding out of the relation inter-variable it is used correlation test. The result of the research shows that the balance of organic fertilizer and inorganic fertilizer give significant effect to increase total N soil, available N soil, Cation Exchange Capacity (CEC), and pH H2O, but it has not significant effect to total P soil, available P soil, total K soil, available K soil, pH NaF, Base Saturation (BS), and Organic Matter. The Highest total N soil was 0,56% with increased percentage 38.8% from control and CEC was 28.08 me%, increased 4.87 me% from control in balanced 100% organic fertilizer and 100% inorganic fertilizer, affected to yield of carrot was 138.5 g increased 27.3 g (24.5%) from control. Keywords: Organic fertilizer, Inorganic Fertilizer, Andisols, Soil Chemistry, Carrot

PEMETAAN TINGKAT BAHAYA EROSI LAHAN KERING DI KECAMATAN JATIPURO KABUPATEN KARANGANYAR DENGAN SISTEM INFORMASI GEOGRAFI (SIG)

Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 7, No 2 (2010)
Publisher : Faculty of Agriculture, Sebelas Maret University

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This research had been conducted at Jatipuro, Sub District of Karanganyar from July until September, 2007. The aims of this research are to know degree of erosion danger and to map that degree of erosion danger. This research was descriptive-explorative by field’s survey and laboratory analysis. Soil sampling technique using purposive sampling method. Site sampling determined with land mapping unit. Analysis of erosion level using USLE method, even though to know degree of erosion dangerous used the table of relation soil depth with erosion level. To make the map degree of erosion dangerous with Arc view GIS 3.3 software. The result of this research conclude that Jatipuro, Sub District of Karanganyar can be classified into 4 erosion dangerous class, with position and width area such that very light in 6th land mapping unit with width area 8.53 ha or 1.17% from total wide of research area. Light, in 1st, 4th, 7th, 12tnd and 16th land mapping units with width area 245.36 ha or 33.72% from total wide of research area. Middle class, in 2nd, 8th, 9th, 10th, 14th, 15th, 17th and 18th land mapping units with width area 181.59 ha or 24.95% from total wide area. Heavy class, in 3rd, 5th, 11th, 13th, 19th, 20th, 21st and 22nd land mapping units with width area 292.18 ha or 40.15% from total wide area. The management of conservation in the land with degree of erosion danger very light until light is low tillage applications, which this purpose is to create soil condition that supported growth of root, but also must be understood the result of tillage, which can be broken soil structures. For the lands with degree of erosion danger middle until heavy, the better conservation is needed. These lands needed terrace’s repairing, there are making bench terrace with middle construction for the middle class and more better terrace for the heavy one. For the best result to minimalist erosion level in this location, in terrace’s making also needed vegetative conservation, there is strip grass to strength the terrace, and also mulching. Keywords: degree of erosion hazard, dry land, GIS

Aplikasi Sistem Informasi Geografi (Gis) untuk Pemetaan dan Simulasi Erosi Tanah

Caraka Tani: Journal of Sustainable Agriculture Vol 22, No 1 (2007): March
Publisher : Universitas Sebelas Maret

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The aims of the research are to use the technology of the geographic information system for mapping and simulation of the soil erosion, and to know the difference betweet actual and potential erosion on the spesific land use type. The area of the research is Jumapolo District, Karanganyar Regency. USLE equation method (R=R.K.L.S.C.P) was used to predict the soil erosion intensity. The steps of the research are (1) pre-survey, prepared equipments for suvey, (2) survey, was done by exploring predertemined land map unit, and (3) labs, analysis of the soil samples, the rainfall data and teh ArcView GIS. Analysis was done using rating based on Zachar (1982) in order to know the difference of the soil erosion intensity.The results of the research are first, geographic information system is useful to mapping and simulation of the soil erosion, especially to calculate data that numerous and difficult, to overlay, to layout the map (or the other spasial data) and the statistic of land area, second, Jumapolo District has variability of the soil erosion intensity i.e. very slight 25,77 ha (0,62% of the agriculture land area), slight 815,71 ha (20,39%), moderate 1.094,69 ha (25,49%), severe 1.150,58 ha (33,09%), very severe 827,25 ha (18,88%) and catastrophic 243,69 ha (1,53%) and third, the change of the land unit type and the conservation technic can change the soil erosio  intensity. Simulation process result that land area which have soil erosion intensity severe, very severe and catastrophic changes become slight and moderate, therefore the new compotitions of the soil erosion intensity are very slight 25,77 ha (0,62%), slight 1.665,48 ha (40,06%), moderate 2.466,43 ha (59,32%), and each severe, very severe and catastrophic 0 ha (0%).

KAJIAN KERUSAKAN LAHAN SUB DAS KEDUANG DI GUNUNG KENDENG DI DESA NGADIPIRO, KECAMATAN NGUNTORONADI, KABUPATEN WONOGIRI

Caraka Tani: Journal of Sustainable Agriculture Vol 24, No 1 (2009): March
Publisher : Universitas Sebelas Maret

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The study site is administratively located at Ngadipiro village, Nguntoronadi subdistrict, Wonogiri regency with the total area of 663.61 ha. The coordinate of the study site lies at latitude of 7o52’00” – 7o54’15” S and longtude of 110o57’45” – 111o60’45” E and altitude of 196-427 m a.s.l. According to geomorphologic, the study site is a denudation hilly area, which severely scraped, with the type of primary land use is rainfed, which occupied by annual crops and seasonal crops. This reaserch were aimed at: 1) identify the physical problems and soil cultivation that have caused the land degradation; 2) obtain the alternative solutions for land degradation, which is suitable with the land physical condition. The type of this research is phenomenology description, with the method of surveying. Land mapping technique used the overlay of three maps, i.e: slope map, soil depth map and land use map, which is obtained from the interpretation of topographic map with the scale of 1:25.000. The obtained land unit was used for analysis unit. The land evaluation was carried out based on: 1) observations of land degradation indicators (land cover, outcrop, soil erosion, soil slide, bench erosion and soil depth); 2) soil erosion analysis with USLE formula, which described by soil hazard class. The alternative solution were based on the land degradation types, the threat levels of land degradation and the land management by farmers. Conclusions: physical problems found are: 1) the climate conditions promoted physical and chemical rocks weathering; 2) the volume of eroded soil corresponded to slope, which shaped “S”; soil management problem found are: 1) land management by farmers also could drive the land degradation, 2) the low level of farmers economical condition resisted the adoption of technology innovation by farmers. The alternative solution offered are minimum soil tillage (TOT) at 9, 10, 11 and 12 land units. On the other hand, the land units of 2, 3, 6, 7, 9, 10 and 12 required the roraks construction and the planting of cover crops and annual crops periodically.