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PENGARUH APLIKASI HIDROGEL TERHADAP BEBERAPA KARAKTERISTIK TANAH IMPACT OF HYDROGEL APPLICATION ON SOME SOIL CHARACTERISTICS Abraham Suriadikusumah
Teknotan: Jurnal Industri Teknologi Pertanian Vol 8, No 1 (2014)
Publisher : Fakultas Teknologi Industri Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar

Penelitian ini dilakukan untuk mengetahui pengaruh aplikasi hidrogel terhadap beberapa sifat atau karakteristik tanah : kadar air, stabilitas agregat, porositas makro, dan kandungan C-organik. Penelitian dilakukan pada bulan September sampai dengan November 2013 di rumah kaca dan laboratorium fisika dan kimia tanah Fakultas Pertanian Universitas Padjadjaran dengan ketinggian tempat ± 700 m di atas permukaan laut. Penelitian ini ditata dalam satu rancangan dasar berupa Rancangan Acak Kelompok yang meliputi 4 perlakuan dan 5 ulangan. Perlakuan tadi adalah: dosis hidrogel 0 gr polybag-1 (H0), dosis hidrogel 100 gr polybag-1 (H1), dosis hidrogel 200 gr polybag-1 (H2), dan dosis hidrogel 300 gr polybag-1 (H3). Hasil penelitian menunjukkan bahwa aplikasi hidrogel berpengaruh nyata terhadap hampir semua variabel yang diamati (stabilitas agregat, porositas makro, dan C-organik), akan tetapi aplikasi hidrogel tidak berpengaruh nyata terhadap kadar air tanah.Kata kunci: hidrogel, kadar air, stabilitas agregat, porositas makro, C-organik

SOSIALISASI SISTEM AGROFORESTRI DI DESA CILAMPUYANG, KECAMATAN MALANGBONG, KABUPATEN GARUT Ridha Hudaya; Anne Nurbaity; Abraham Suriadikusumah; Reza Septianugraha
Dharmakarya Vol 6, No 1 (2017): Maret
Publisher : Universitas Padjadjaran

Pada tahun 2004 di DAS Cimanuk Hulu telah diperkirakan mempunyai lahan kritis seluas 40.876 ha, namun hingga kini belum diketahui bagaimana penanganan terhadap fenomena tersebut. Sementara itu kejadian cuaca ekstrim di wilayah ini pada tanggal 20 September 2016 yang melahirkan bencana banjir bandang di kota Garut dapat dijadikan sebagai indikator tentang masih belum tertanganinya secara baik lahan kritis yang ada. Untuk itu perlu adanya upaya untuk menangani masalah tersebut, salah satunya dengan upaya deforestasi melalui agroforestri. Metode kegiatan pengabdian kepada masyarakat di Desa Cilampuyang Kecamatan Malangbong ini berupa sosialisasi, penyuluhan, dan penanaman pohon. Penyuluhan dan diskusi dilaksanakan sebanyak dua kali bertempat di aula BPDASHL Cimanuk desa Cilampuyang. Kegiatan penanaman dilaksanakan setelah acara sosialisasi untuk memberikan ketrampilan secara teknis mengenai sistem agroforestry.

THE ROLE OF HYDROGEL AND INCUBATION TIME TOWADS PH, C-ORGANIK, AND N-TOTAL SOIL Atih Winingsih; Abraham Suriadikusumah; Oviyanti Mulyani; Anne Nurbaity; Emma Trinuranisofyan
Jurnal Penelitian Saintek Vol 24, No 1: April 2019
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

The study was aimed at determining the role of hydrogels and the incubation time on pH, organic C and N-total soil with indicators of sweet corn plants (Zea mays Saccharata Sturt) on Jatinangor inceptisols. The study was conducted from February 2018 to April 2018 at the Ciparanje Experimental Field, Faculty of Agriculture, Padjadjaran University. The study used a Randomized Block Design (RBD) with nine treatments and three replications, consisting of controls; mixed hydrogels and urea incubation and urea only incubation . The parameters observed were pH using the Potentiometric method, C-Organic using the Walkey and Black and N-Total using the Kjeldahl method. The data then were analyzed by variance. Significant testing was conducted to determine the effect of treatment using the Fisher Test at the level of 5%. The results show that there is an effect of hydrogels and the incubation time of hydrogels on pH, organic C and N-total soil. The control treatment shows the highest pH of 6.88. The urea treatment and incubation hydrogel of 20 days shows the highest organic C at 2.80% and the highest N-total is found in the treatment of urea and 40 day incubation hydrogel which is 0.34%.PERAN HIDROGEL DAN WAKTU INKUBASINYA TERHADAP pH, C-ORGANIK, DAN N-TOTAL TANAHPenelitian bertujuan untuk mengetahui peran hidrogel dan waktu inkubasinya terhadap pH, C-organik dan N-total tanah dengan indikator tanaman jagung manis (Zea mays Saccharata Sturt) pada inceptisols Jatinangor. Penelitian dilakukan mulai bulan Februari 2018 hingga April 2018 di Lahan Percobaan Ciparanje Fakultas Pertanian Universitas Padjadjaran. Penelitian menggunakan Rancangan Acak Kelompok (RAK) dengan sembilan perlakuan dan tiga kali ulangan, yang terdiri atas kontrol; hidrogel dan urea inkubasi serta urea inkubasi. Parameter yang diamati adalah pH dengan menggunakan metode Potensiometri, C-Organik dengan menggunakan metode Walkey and Black dan N-Total dengan menggunakan metode Kjeldahl. Data hasil pengamatan pada penelitian akan dianalisis dengan sidik ragam. Pengujian signifikan untuk mengetahui pengaruh perlakuan digunakan Uji Fisher pada taraf 5%. Hasil penelitian menunjukkan terdapat pengaruh hidrogel dan waktu inkubasi hidrogel terhadap pH, C-organik dan N-total tanah. Perlakuan kontrol menunjukkan pH tertinggi yaitu 6,88. Perlakuan urea dan hidrogel inkubasi 20 hari menunjukkan C-organik tertinggi yaitu 2,80% dan N-total tertinggi yaitu perlakuan urea dan hidrogel inkubasi 40 hari yaitu 0,34%.

The Pedogenesis of Inceptisols on Southeast Toposequence of Mount Manglayang in West Java, Indonesia Ganjar Herdiansyah; Mahfud Arifin; Abraham Suriadikusumah
Indonesian Journal on Geoscience Vol 9, No 2 (2022)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17014/ijog.9.2.195-208

DOI:10.17014/ijog.9.2.195-208The most potential soil order in Indonesia is dominated by Inceptisols, whereas the topography combined with a climatic factor are the main factors to regulate pedogenetic process. This research was intended to determine the pedogenetic process and soil development on various terrain positions at the southeast toposequence of Mount Manglayang areas that have hilly topography. The researched area was 28.83 ha. Based on those conditions, this research aims to study the pedogenetic process and soil development in the southeast slope toposequence of Mount Manglayang, the relationship between the physical, chemical, and mineralogical soil properties, the soil classification to family level based on soil taxonomy, National Soil Classification, and FAO soil classification systems. This research used survey, descriptive, and comparative methods. The result showed that the pedogenetic processes identified were the formation of B horizon through clay accumulation, soil colour, and soil structure development, and the formation of amorphous kaolinite and halloysite minerals. Based on soil taxonomy, the soil were classified as Fluventic Humudepts, coarse-loamy, kaolinitic, isohyperthermic at the upper slope and Fluventic Dystrudepts, fineloamy, kaolinitic, isohyperthermic at the middle and lower slopes. According to National Soil Classification, the soil is Humic Cambisol at the upper slope, Distric Cambisol at the middle slope, and Cromic Cambisol at the lower slope. FAO classified the soil as Umbric Cambisols at the upper slope and Dystric Cambisols at the middle and lower slopes.

Identifikasi Kedalaman Pirit dan Kaitannya Terhadap Kesehatan dan Produktivitas Tanaman Kelapa Sawit (Elaeis guineensis Jacq.) ( Studi Kasus di Perkebunan PT Sawit Sumbermas Sarana Tbk ) Aris Primayuda; Abraham Suriadikusumah; M Amir Solihin
Jurnal Ilmu Tanah dan Lingkungan Vol 24 No 1 (2022): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jitl.24.1.6-13

The pyrite layer (FeS2) characterizes acid sulphate soil. Under oxidized conditions, pyrite produces sulphuric acid that increases acidic soil to very acidic (pH 2-3). This condition is a threat to plantation, including oil palm plantation. Therefore, the management of acid sulphate soil must take into account the depth of pyrite layer. Studies on the identification of pyrite and the use of remote sensing in monitoring plant health are urgently required to optimize oil palm production in acid sulphate soil. In this case study, detailed survey and mapping were performed to measure the depth of pyrite followed by plant health analysis, and production analysis. The results showed that the depth of pyrite layer at the site ranged from 30 cm to over 120 cm from the soil surface. The depth indicated that the 72.40% of the soil was categorized medium pyrite depth (60-120 cm). Furthermore, 484.85 ha was shallow pyrite layer (<60 cm) and deep pyrite layer (>120 cm) covered an area of 163.75 ha. A tendency for a positive linear relationship between pyrite depth, NDVI (normalized difference vegetation index) or plant health, and plant productivity. NDVI values and plant productivity and deeper pyrite depth was identified as shown in higher NDVI values following deeper pyrite layer. Plant productivity on deep pyrite soil was significantly different from the one in medium or shallow pyrite soil. Shallower pyrite layer was followed by lower oil palm production. The productivity has decreased by 39% and 19% in soil with pyrite depths of < 60 cm and 60 cm – 120 cm respectively.

Spatial distribution of status silicon availability for plant and its effect to rice yield Budy Frasetya Taufik Qurrohman; Abraham Suriadikusumah; Benny Joy; Rija Sudirja
SAINS TANAH - Journal of Soil Science and Agroclimatology Vol 20, No 1 (2023): June
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/stjssa.v20i1.65862

Silicon (Si) is a beneficial element for rice plants. However, evaluating the Si availability status of paddy soil is rarely done. This study aimed to investigate the Si availability for plant (SiAP), spatial distribution, SiAP correlations with some soil properties and the effect of SiAP status on the rice yield. This study used a survey method to collect paddy soil and water sample. The pot experiment method was used to evaluate paddy plant response to SiAP level. Based on K-means, cluster analysis showed that soil SiAP was categorized low (< 147 mg SiO2 kg-1), moderate (147 â€“ 224 mg SiO2 kg-1) and high (> 224 mg SiO2 kg-1). The SiAP status of the paddy soil area of 26,395 hectares (25%), 61,744 hectares (59%) and 15,952 hectares (15%) was categorized as low, moderate and high, respectively. This present study revealed that the upland area paddy soil has higher SiAP than the lowland area. Total silicon dioxide (SiO2) and clay percentage were negatively correlated with the SiAP in soils. Silicon addition to the paddy soil with SiAP status showed low to high increase in rice yield by 0.2%, 3.9% and 2.7%.

Pemetaan Tingkat Bahaya Erosi dengan Pemanfaatan Teknologi Drone di DTA Cipaheut Sub DAS Cikapundung Hulu Elita Cahyani; Abraham Suriadikusumah; Apong Sandrawati
Media Agribisnis Vol. 7 No. 1 (2023): Mei
Publisher : Program Studi Agribisnis, Fakultas Pertanian, Universitas Muhammadiyah Buton

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35326/agribisnis.v7i1.3232

Technology in the field of mapping is constantly evolving to provide convenience for human work. One of the innovations that are developing in todayâ€™s modern era is drone or Unmanned Aerial Vehicle (UAV). Erosion mapping and erosion measurements are carried out to determine the potential risk of erosion in certain areas. The erosion risk map shows the distribution of erosion hazard levels in an area. The objective of this research is to determine erosion prediction and erosion hazard levels spatially based on USLE (Universal Soil Loss Equation) method using drone. The used of UAV for collecting data to generate soil erosion risk map at detail scale based on USLE method is relatively infrequently done in Indonesia. The research was conducted in Cipaheut Watershed, Cikapundung Hulu Sub-watershed, Cimenyan, Cimenyan, Bandung Regency, West Java. The results of the study show that the role of drone is very helpful in mapping general conditions and land use spatially. In addition, drones are able to provide actual data sources to identify the physical factors needed in the USLE method of erosion calculations such as LS, C and P factors. Erosion prediction and erosion hazard levels can be calculated using data acquired from drones. There are 8 SPLs with a total land area of â€‹â€‹225.10 Ha. SPL 5 with the use of dry land and steep slope have the highest erosion prediction values â€‹â€‹of 703.1207 tons/ha/year and an erosion hazard index of 87.8901 tons/ha/year with a very high level of erosion hazard.

Identifikasi Lahan Kritis Melalui Pemanfaatan Teknologi Drone Di DTA Cipaheut Pada SUB DAS Cikapundung Hulu Riska Adysa; Abraham Suriadikusumah; Mahfud Arifin
Sang Pencerah: Jurnal Ilmiah Universitas Muhammadiyah Buton Vol. 9 No. 2 (2023): Sang Pencerah: Jurnal Ilmiah Universitas Muhammadiyah Buton
Publisher : Lembaga Jurnal dan Publikasi Universitas Muhammadiyah Buton

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35326/pencerah.v9i2.3170

Perkembangan populasi penduduk di wilayah Daerah Aliran Sungai (DAS) menyebabkan terjadinya perubahan pola pemanfaatan Sumberdaya Alam (SDA). Hal tersebut berakibat pada maraknya fenomena alih fungsi lahan yang pada gilirannya akan berdampak pada meningkatnya erosi dan kerusakan lahan. Jika fenomena tersebut terus terjadi maka akan berdampak pada penurunan daya dukung lahan bagi fungsi ekologis DAS dan juga timbulnya lahan kritis. Banyaknya perubahan penggunaan lahan menyebabkan penurunan kualitas pada Sub DAS Cikapundung, salah satunya di daerah Daerah Tangkapan Air (DTA) Cipaheut yang terletak pada Desa Cimenyan, Kecamatan Cimenyan, Kab Bandung, Jawa Barat. Penelitian ini bertujuan untuk mengetahui kondisi lahan kritis pada DTA Cipaheut dengan menggunakan kemampuan teknologi drone. Penelitian dilakukan dengan metode survei dengan analisis deskriptif dan kuantitatif.. Hasil penelitian menunjukkan bahwa DTA Cipaheut didominasi oleh kerapatan vegetasi yang buruk (51,47%). Data DEM menunjukkan bahwa DTA Cipaheut didominasi lereng yang curam (48,20%). Data survei lapangan menunujukkan bahwa tingkat bahaya erosi didominasi dengan kategori berat yakni pada penggunaan lahan tegalan. Manajemen lahan di DTA Cipaheut termasuk kelas sedang. Secara keseluruhan berdasarkan hasil penilaian didapatkan hasil bahwa lahan di DTA Cipaheut 54,020% dalam kategori kritis dan 43,567% dalam kategori sangat kritis.

The Pedogenesis of Inceptisols on Southeast Toposequence of Mount Manglayang in West Java, Indonesia Ganjar Herdiansyah; Mahfud Arifin; Abraham Suriadikusumah
Indonesian Journal on Geoscience Vol. 9 No. 2 (2022)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17014/ijog.9.2.195-208

DOI:10.17014/ijog.9.2.195-208The most potential soil order in Indonesia is dominated by Inceptisols, whereas the topography combined with a climatic factor are the main factors to regulate pedogenetic process. This research was intended to determine the pedogenetic process and soil development on various terrain positions at the southeast toposequence of Mount Manglayang areas that have hilly topography. The researched area was 28.83 ha. Based on those conditions, this research aims to study the pedogenetic process and soil development in the southeast slope toposequence of Mount Manglayang, the relationship between the physical, chemical, and mineralogical soil properties, the soil classification to family level based on soil taxonomy, National Soil Classification, and FAO soil classification systems. This research used survey, descriptive, and comparative methods. The result showed that the pedogenetic processes identified were the formation of B horizon through clay accumulation, soil colour, and soil structure development, and the formation of amorphous kaolinite and halloysite minerals. Based on soil taxonomy, the soil were classified as Fluventic Humudepts, coarse-loamy, kaolinitic, isohyperthermic at the upper slope and Fluventic Dystrudepts, fineloamy, kaolinitic, isohyperthermic at the middle and lower slopes. According to National Soil Classification, the soil is Humic Cambisol at the upper slope, Distric Cambisol at the middle slope, and Cromic Cambisol at the lower slope. FAO classified the soil as Umbric Cambisols at the upper slope and Dystric Cambisols at the middle and lower slopes.

DAMPAK BEBERAPA PENGGUNAAN LAHAN TERHADAP EROSI DAN TINGKAT BAHAYA EROSI DI SUB DAS CISANGKUY Abraham Suriadikusumah; Ganjar Herdiansyah
Agrin Vol 18, No 1 (2014): Agrin
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.agrin.2014.18.1.208

Penelitian ini didasari oleh semakin berkurangnya lahan hutan di Sub DAS Cisangkuy, yang berubah menjadi lahan pertanian. Luas Sub DAS Cisangkuy yaitu 34.024 Ha.Tujuan dari penelitian ini untuk : 1) mengetahui perubahanluas dari setiap jenis penggunaan lahan di Sub DAS Cisangkuy, 2) Mengetahui perubahan penggunaan lahan yang dapat meningkatkan laju erosi rata-rata dan tingkat bahaya erosi di Sub DAS Cisangkuy.Penelitian ini menggunakan metode kualitatif, deskriptif, dan survai lapangan menggunakan metode survai fisiografis secara bebas. Hasil penelitian menunjukkan bahwa selama kurun waktu 15 tahun (1997-2011),terjadi penurunan luas jenis penggunaan lahan hutan 9.849Ha (65,76%) dan sawah 2.221 Ha (11,6%) dari area total Sub DAS Cisangkuy, terjadi peningkatan pada luas jenis penggunaan lahan perkebunan 8.172 Ha (73,57%), ladang 66 Ha (1,17%), kebun campuran 1.431 Ha (45,94%), permukiman 2.401 Ha (59,24%). Terjadi peningkatan besar erosi rata-rata dari 45,24ton/ha/tahun pada tahun 1997 menjadi 303 ton/ha/tahun pada tahun 2010,terjadi peningkatan tingkat bahaya erosi dengan indeks bahaya erosi dari 1,84 (sedang) pada tahun 1997 menjadi 14,03 (sangat tinggi) pada tahun 2010 di Sub DAS Cisangkuy. Kata kunci : penggunaan lahan, erosi, tingkat bahaya erosi, sub Das Cisangkuy ABSTRACTThe research was based on the diminishing of land forest in the Cisangkuy Sub Watershed converted to land agricultural. Area in the Cisangkuy Sub Watershed is 34.024 ha. The research aims to : 1) know the area change of each type of land use in the Cisangkuy Sub Watershed, 2) Knowing the changes in land use can increase the average erosion rate and erosion rate in the Cisangkuy Sub Watershed. This research used qualitative methods, descriptive and field survey by physiographic approach survey. The result showed that during the period of 15 years (1997-2011), there were a decreasing in land use forest area of 9.849 ha (65,76%) and rice field area of 2.221 ha (30,93%) of the total in theCisangkuy Sub Watershed, an increasing in land use plantation area of 8.172 ha (73,57%), field area of 66 ha (1,17%), garden area of 1.431 ha (45,94%), village area of 2.401 ha (59,24%). An increase in the erosion ofthe average of 45,24 tonnes/ha/year in 1997 to 303 tonnes/ha/year in 2010, an increase in the rate of erosion with erosion hazard index of 1.84 (average) in 1997 to14.03(very high) in 2010 in the Cisangkuy Sub Watershed. Keywords: land use, erosion, the level of erosion hazard, Cisangkuy sub watershed

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