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Forum Geografi
Published by Universitas Muhammadiyah Surakarta
ISSN : 08520682     EISSN : 24603945     DOI : -
Core Subject : Science,
Earth & Planetary Sciences
Forum Geografi, Indonesian Journal of Spatial and Regional Analysis (For. Geo) is an open access, peer-reviewed journal that will consider any original scientific article for expanding the field of geography. The journal publishes articles in both physical and human geography specialties of interest to spatial analysis and regional analysis in (but not limited) Indonesia by applying GIS and/or remote sensing techniques.
Arjuna Subject : -
Articles 24 Documents
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Search results for , issue "Vol 16, No 2 (2002)" : 24 Documents clear
Impact of Using Pendowo Liquid Organic Fertilizer Toward Land Potential at Jenar, Sragen, Central Java Retno Woro Kaeksi
Forum Geografi Vol 16, No 2 (2002)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v16i2.608

Abstract

The objectives of this research are to know the content of chemical elements found in waste of fluid organic in Jenar Banker in sub district of Jenar, Sragen and to know the influence of fluid organic fertilizer on the potency of area in Jenar. The collected data in this research are 1) topography, 2) geology, 3) geomorphology process, 4) area used, 5) horizon of the soil, 6) soil texture, 7) soil structure, 8) pH of the soil, 9) Nitrogen, 10) Phosphate, 11) Calium, 12) Calcium, 13) Magnesium, 14) the characteristic of physics and chemical elements in waste of Pendowo fluid organic fertilizer, and 15) the data dealing with interviewing to the civilization. For getting the area taken as the sample, this research uses stratified random sampling. While the analysis used in this study is descriptive method. The result of this research shows that 1) the main stone as the material for forming the land consists of sandstone, tuff of sand, limestone and clay (eaten for medicinal puposes); the relief is wave until making the hill, the plant consists of jati (teak), sonokeling, and the seasonal plants that exist in tegalan (dry field near the rie field but used for vegetables and other secondary crops), farm, and tebu (sugar cane) land. The land that has not influenced by the amine fertilizer, the characteristi of pH soil is base (more than 7,5). The structure of crumbs up to clump soil and texture of clay which have sand are relevant with jati (teak) and sonokeling growth. 2) the chemical elements of fluid organi fertilizer in Banker are not relevant with the chemical elements which are proposed by Paluraya Company. The element of nitrogen proposed is 4% while the result of the research shows 3,93%; 3,6%; 2,26%; 0,887%; 0,09%; 0,137%; 0,171%; 0,156%; 0,187%; 0,167%; 0,175%; and 0,108%. The pH of the fertilizer proposed is 5,5 – 6,5 while the finding of the research shows there are pH 4,65; pH 3,6; pH 4,5; and pH 5,41. The element of phosphate proposed is 0,3% while the result of the research shows that is less of 0,3%, they are 0,22%; 0,1%; 0,001%; 0,0053%; 0,0095%; 0,0077%; 0,0053%; 0,0047%; 0,0052%; 0,0055%; and 0,0072%. The element of calcium proposed is 1,2% but the finding of the analysis from 9 sample of calcium elements are less of 0,2%. 3) The potency of the land lower from time to time and it will become serious problems because there is a series changes of soil structure to be clay strong, the forming of complex cropping board of salt, pedal lay and pH soil become sour. By becoming sour, so the growth of the pants and the development of the plants in the area of the research will be destroyed more over, they will not grow anymore.
Regional Inventory Approach for Paddy Plantation Area Estimation at Yogyakarta Special Province Noorhadi Noorhadi; Su Ritohardoyo
Forum Geografi Vol 16, No 2 (2002)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v16i2.604

Abstract

Generally agricultural data could be collected by several techniques, i.e. rural statistic, sensus, administrative by product, multiple frame sampling  surcey, and frame sampling survey regional inventory. However this research aim was stressed on applying of regional inventory for estimating of rice planting area. This research was carried out in Yogyakarta Special Region. Survey method was employed by data collecting from field observation of land cover on seleted area sample. Proportion of the land over was extrapolated for grasping every kind of land covers on population area. Several steps of research are land stratification, composting of frame sampling, segment sample extraction, field works, and data analysis. Digital Map of Rie Field Standard sacle 1:100.000 used for land stratifying, result three polygons are wetland arable, dry land arable, and highland arable. Based on the frame sampling and its extraction used Systemic Aligned Random Sampling, were selected 53 segment sample distributed in 32 sub districts. Data analysis was performed through desriptive technnique in which mathematically analysis was mmostly used. Result of the research indicates that the regional inventory approach is suitable enough for estimation of rice planting area. However several modifications need to be adapted to the region characteristic. The result of the estimatio shows that the rice planting area on the first period since land preparation up to harvest season (May 2002) is 23,694 ha. Generative phase of rice planting is dominant on the riice field. This phase indicates that the area prediction of rice harvest on July 2002 is about 10,028 ha. The acumulative area of rice harvest on period May – September 2002 is estimated about 22,269 ha. The result of this research finds out that the rice planting area on the second period (July 2002) is predicted about 12,780 ha. On this period, the area is dominated by the phase of rice harvest about 7,015 ha. Based on the rice planting area at phase generative on this period can be predicted that rice harvest area up to September 2002 is about 2,743.7 ha. The acumulative area of rie havest on period July up to the end of November 2002 is estimated about 5,764.87 ha. In generally, regional inventory approach is suitable for estimating for rice planting area.
Spatial Diffusion of Leather Industries (Case Study at Magetan District) Dilahur Dilahur
Forum Geografi Vol 16, No 2 (2002)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v16i2.609

Abstract

After the rise and the fall of the tides and the change of the activities as the phenomena which happen in the daily life of sociaety, the hange of spacing or distributionn of industrial businesses becomes one of the new phenomena. The objective of this research is to know the process of the diffusion from leather industry in Magetan Subdistrict. This research uses secondary data analysis and direct observation. The result of this research shows that the change (the rise and fall of the tides) in leather industry has producted the movement of distribution or spacing in which the center of the main production is declined and the new center may arise. In this movement, it seems that the existence of the specification on types of activity, like having similar leather, shoescraft, beltcraft, and sendalcraft become the serious phenomena. This kind of the change and its development is signed by the change of position from becoming employee to be new employer, having some employees that may become the employers at any time and so forth. The style of the diffusion which happen is the style of mixing diffusion in which the business on leather industry becomes wider reaching around the village while the original village (Kauman) is still as the center of industry, although it has so limited activities because the business is always declined.
Infrared Aerial Photograph Application for Prediction of Runoff Coefficient at Wuryantoro Catchment, Wonogiri Sugiharto Budi Santoso
Forum Geografi Vol 16, No 2 (2002)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v16i2.605

Abstract

This research was carried out in Wuryantoro Watershed, Wonogiri. The goal of this study is to examine the remote sensing technology capability to obtain the physical characteristics data of watershed in the prediction of runoff coefficient using cook method. The physical characteristics is topography (relief), landcover, water storage, and infiltration. The physical characteristis is interpreted on infrared aerial photography on scale 1 : 10.000 based on element of interpretation i.e. tone, texture, size, shape, pattern, site, and association. The result of the prediction is tested by comparing them with the data of field measurement result. The accuraccy of the result of aerial photo interpretation of physical characteristics of watershed can be obtained as follows 1) the accuracy of the interpretation of landuse 88,5%; 2) the accuracy of slope interpretation 87.67%. The accuracy of prediction of the runoff coeficient 86.9%.

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