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Journal : Soil REns

Evaluasi Kriteria Kerusakan tanah untuk Produksi Biomassa pada Lahan Kering di Kabupaten Subang Budy Frasetya Taufiq Qurrahman; Abraham Suriadikusumah; Rachmat Haryanto
Soilrens Vol 14, No 1 (2016)
Publisher : Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (481.617 KB) | DOI: 10.24198/soilrens.v14i1.9266

Abstract

Government  Regulation No.  150  Year  2000  on  Soil  Degradation Control  for Production of Biomass  is  a  testament  to  the seriousness  of  the government  in anticipating  and  addressing land degradation due  to  biomass  production.  In fact,  unsustainable intensification can cause soil degradation. Soil  degradation parameters  may  change in accordance  with  the  conditions  of  the district/city. This study aimed to evaluate the standard criteria of soils degradation on dry land in Subang District. Did having high accuracy and whether the ten parameters are decisive parameters. The research  method used  was  a  descriptive survey.  Data  from  the field and then  analyzed  using discriminant analysis. The results of discriminant analysis for soil degradation standard criteria in Subang District, determining parameters were selected 4 parameters, ie bulk density, sand fraction,electrical conductivity, soil reaction (pH) with the level of accuracy obtained discriminant function 74,1 % with corelation coeficient 0,866 or 86,6 % and determination coeficient (R2) 0,75 or 75 %. Keywords: Accuracy Discriminant Function, Evaluation Standards Criteria, Parameters Determinant 
Identifikasi Zona Agroekologi dan Kesesuaian Lahan Komoditas Mangga Arumanis (Mangifera indica L.) di Kabupaten Probolinggo Apong Sandrawati; Abraham Suriadikusumah; Ajeng Dwi Yuningtyas
Soilrens Vol 15, No 1 (2017)
Publisher : Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (762.425 KB) | DOI: 10.24198/soilrens.v15i1.13342

Abstract

Probolinggo district is the one of the largest mango producing in Indonesia. Mango (Mangifera indica L.) is a fruit with a very good potential to be developed. Production of mango in Probolinggo district was decreased. The aim of this research to determine the land suitability for arumanis mango in Probolinggo district. This research has conducted in April untill May 2016 at Probolinggo district and Faculty of Agriculture, University of Padjadjaran. Land evaluation based on agroecological zone are slopes, drainage, moisture and temparature. Sampling spot are used composite sampling based on agroecological zones and data analysis using descriptive and comparative methods. Results of the research suitability of arumanis mango land in Probolinggo district there are three classes which enough suitable (S2), marjinal suitable (S3), and not suitable forever (N2) land suitability class with a major limiting factor slope, texture, temperature, effective depth and precipitation. Based on the result, in conclusion zone I, II and III with 69.851,36 Ha and 54,58 % is suitable for development arumanis mango in Probolinggo district.Keywords: arumanis mango, agroecological zones, land suitability
Land Characteristic and Land Availability for Food Crops to Attain Food Sovereignty in Kabupaten Bandung Abraham Suriadikusumah
Soilrens Vol 16, No 1 (2018)
Publisher : Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (609.13 KB) | DOI: 10.24198/soilrens.v16i1.18311

Abstract

Land use change has long been a problem in West Java, especially in Bandung district (Kabupaten Bandung), a hinterland and buffer area for the Bandung Metropolitan and one of the major crop district in West Java province.  Land use conversion caused the decrease of soil productivity and land availability for agricultural activity especially for food crops, the land reduction is unable to compensate the need of food availability.The research in this study has been done by using descriptive and comparative survey method to study land characteristic and status of land availability in Kabupaten Bandung and its contribution food crop development. The results showed that soil fertility status in Bandung district varies from very low to high. Soil pH conditions ranged from acid to neutral. The actual availability of land for food crops currently stands at 52,790 hectares, with paddy fields as current land use. Availability of potential land for food crops are 64,970 hectares with the current type of land use in the form of bushes and plantations.  Keywords: characteristics, availability, land use conversion, land, district Bandung
Pengaruh Kemiringan Lereng dan Penggunaan Lahan terhadap beberapa Sifat Fisika Tanah di Sub-DAS Cikapundung Hulu Abraham Suriadikusumah; Ridha Hudaya; Adhe Sigit Sutanto
Soilrens Vol 12, No 1 (2014)
Publisher : Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/soilrens.v12i1.29429

Abstract

This research was conducted to find out the effect of various slope classes and land use types on porosity, permeability and soil's aggregate stability index. The research was carried out from June up to December 2009 in Upper Cikapundung Sub Watershed which area was located in West Bandung Regency and Subang Regency, West Java. The method used in this research was explorative survey method. Sampling technique which used based on purposive stratified sampling method. Soil sampling was carried onto three various slope classes in three various land uses, which consist of: 8- 15% slope classes in pine forest, 8-15% slope classes in secondary forest, 8-15% slope classes in tea plantation, 15-30% slope classes in pine forest, 15-30% slope classes in secondary forest, 15-30% slope classes in tea plantation, 30-45% slope classes in pine forest, 30-45% slope classes in secondary forest and 30-45% slope classes in tea plantation. The result of this research showed that highest soil total porosity achieved in 8-15% slope classes in secondary forest, 8-15% slope classes in pine forest, 15-30% slope classes in all land use and 30-45% slope classes in all land use. Highest permeability achieved in 8-15% slope classes in all land use, 15-30% slope classes in tea plantation, 15-30% slope classes in pine forest and 30-45% slope classes in tea plantation. Soil index aggregate stability achieved in 8-30% slope classes in secondary forest, 8-30% slope classes in tea plantation and 30- 45% slope classes in all land use
Integrasi Kompos Kulit Kopi dan Biochar untuk Meningkatkan Kualitas Bibit Kopi Arabika Sara, Dirga Sapta; Tridakusumah, Ahmad Choibar; Joy, Benny; Sofyan, Emma Trinurani; Suriadikusumah, Abraham
Soilrens Vol 23, No 2 (2025)
Publisher : Dept Ilmu Tanah & Sumberdaya Lahan Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/soilrens.v23i2.69715

Abstract

The application of organic amendments is an important strategy to improve seedling quality in coffee nurseries. This study aimed to evaluate the effects of coffee husk compost and biochar, appliedsingly and in combination, on the growth of Arabica coffee seedlings. The experiment was conductedin a nursery using polybags filled with 5 kg of growing media and arranged in a randomized completeblock design with seven treatments and four replications. The treatments consisted of a control, coffeehusk compost alone, biochar alone, and combinations of compost and biochar at different rates.Growth parameters observed included plant height, stem diameter, and number of leaves. The resultsindicated that all amended treatments significantly improved seedling growth compared to thecontrol. The best growth performance was consistently obtained from the combined application ofcoffee husk compost at 300 g polybag⁻¹ and biochar at 200 g polybag⁻¹, which produced the highestplant height, stem diameter, and leaf number. This treatment demonstrated a synergistic effectbetween coffee husk compost as a nutrient source and biochar as a soil conditioner that improved thegrowing media environment. These findings suggest that the combined use of coffee husk compost andbiochar at appropriate rates is an effective approach to enhance vegetative growth and overall qualityof Arabica coffee seedlings in nursery systems.