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PENGARUH NaCl DAN AMELIORAN ORGANIK Azolla pinnata TERHADAP N-TOTAL, pH TANAH, SERTA BOBOT KERING TANAMAN PADI (Oryza sativa L.) PADA INCEPTISOLS JATINANGOR Khoiriyyah, Luluatul; Setiawati, Mieke Rochimi; Suriadikusumah, Abraham
Jurnal Agroekoteknologi Vol 9, No 1 (2017)
Publisher : Jurusan Agroekoteknologi Fakultas Pertanian Untirta

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Abstract

The high content of NaCl in soil may lead to nutrient imbalance and inhibit the Nitrogen uptake by plants. Azolla pinnata can be used as an organic ameliorant to help plant roots in absorbing nutrients and enhancing the number of available N for plants. The aims of this research were to ascertain whether Azolla pinnata as organic ameliorant gave the significant difference on the enhancement of N content of soil, pH of soil, and dry weight of rice plant on various salinity level of soil and also to find out if Azolla pinnata can suppress salinity stress at certain salinity. The experiment was conducted at the Greenhouse of Faculty of Agriculture Universitas Padjadjaran, Jatinangor and also at the Laboratory of Soil Fertility and Plant Nutrion, Departement of Soil Science and Land Resources on November 2016 until March 2017. The experimental design used was randomized block design with 8 treatments and 4 replications. The treatments consist of without the organic ameliorant Azolla pinnata, and with the application of Azolla pinnata on salinity level 0, 2, 4, 6 mmhos cm-1. The results showed that the application of NaCl and Azolla pinnata gave the significant difference on soil pH, and dry weight of plant. The application of Azolla pinnata is not able yet to suppress the rice symptom of salinity stress at 2, 4, and 6 mmhos cm-1 on the enhancement of dry weight of plant. The application of Azolla at salinity 6 mmhos cm-1 was equivalent with salinity 2 mmhos cm-1 in producing dry weight of plant.
SOSIALISASI SISTEM AGROFORESTRI DI DESA CILAMPUYANG, KECAMATAN MALANGBONG, KABUPATEN GARUT Hudaya, Ridha; Nurbaity, Anne; Suriadikusumah, Abraham; Septianugraha, Reza
Dharmakarya Vol 6, No 1 (2017): Maret
Publisher : Universitas Padjadjaran

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Abstract

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. 
PENGARUH NaCl DAN AMELIORAN ORGANIK Azolla pinnata TERHADAP N-TOTAL, pH TANAH, SERTA BOBOT KERING TANAMAN PADI (Oryza sativa L.) PADA INCEPTISOLS JATINANGOR Khoiriyyah, Luluatul; Setiawati, Mieke Rochimi; Suriadikusumah, Abraham
Jurnal Agroekoteknologi Vol 9, No 2 (2017)
Publisher : Jurusan Agroekoteknologi Fakultas Pertanian Untirta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33512/j.agrtek.v9i2.5109

Abstract

The high content of NaCl in soil may lead to nutrient imbalance and inhibit the Nitrogen uptake by plants. Azolla pinnata can be used as an organic ameliorant to help plant roots in absorbing nutrients and enhancing the number of available N for plants. The aim of this research was to ascertain whether Azolla pinnata as organic ameliorant gave the significant difference on the enhancement of N content of soil, pH of soil, and dry weight of rice plant on various salinity level of soil and also to find out if Azolla pinnata could suppress salinity stress at certain salinity. The experiment was conducted at the Greenhouse of Faculty of Agriculture Universitas Padjadjaran, Jatinangor and also at the Laboratory of Soil Fertility and Plant Nutrion, Departement of Soil Science and Land Resources on November 2016 until March 2017. The experimental design used was Randomized Completely Block Design with 8 treatments and 4 replications. The treatment was consisted of without the organic ameliorant Azolla pinnata, and with the application of Azolla pinnata on salinity level 0, 2, 4, 6 mmhos cm-1. The results showed that the application of NaCl and Azolla pinnata gave the significant difference on soil pH, and dry weight of plant. The application of Azolla pinnata is not able yet to suppress the rice symptom of salinity stress at 2, 4, and 6 mmhos cm-1 on the enhancement of dry weight of plant. The application of Azolla at salinity 6 mmhos cm-1 was equivalent with salinity 2 mmhos cm-1 in producing dry weight of plant.Keywords: NaCl, Organic ameliorant Azolla pinnata, Rice, Salinity
Pengaruh Pupuk Hayati dan Anorganik Terhadap Populasi Bakteri Pelarut Fosfat, Kandungan Fosfat (P) dan Hasil Tomat Hidroponik Adhitiya Rana; Mieke Rochimi Setiawati; Abraham Suriadikusumah
Jurnal Biodjati Vol 3, No 1 (2018): May
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/biodjati.v3i1.2251

Abstract

Pada sistem hidroponik, pemberian pupuk anorganik dan pupuk hayati dilakukan untuk meningkatkan hasil tanaman karena pupuk anorganik menyediakan unsur hara dan pupuk hayati menghasilkan fitohormon yang meningkatkan pertumbuhan tanaman. Penelitian ini bertujuan untuk mengetahui pengaruh pemberian pupuk hayati yang dikombinasikan dengan pupuk anorganik terhadap populasi bakteri pelarut fosfat, kandungan fosfat (P) dan hasil tanaman tomat. Penelitian ini dilakukan menggunakan rancangan acak kelompok (RAK) dengan 7 perlakuan kombinasi pupuk anorganik (konsentrasi 100%, 75%, dan 50%), pupuk hayati (konsentrasi 100%, 75%, 50%, dan 25%) 4 ulangan. Data yang diperoleh dianalisis secara statistik untuk melihat pengaruh perlakuan. Hasil percobaan menunjukkan bahwa kombinasi pupuk anorganik dan pupuk hayati menunjukkan hasil yang tidak berbeda nyata terhadap populasi bakteri pelarut fosfat, kandungan P, dan hasil tanaman tomat pada sistem hidroponik.
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
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

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Abstract

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
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (24.683 KB) | DOI: 10.21831/jps.v24i1.20868

Abstract

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

Abstract

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

Abstract

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

Abstract

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 – 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%.