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Jurnal Ilmu Tanah dan Lingkungan

jtanah
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Published by Institut Pertanian Bogor

ISSN : 14107333 EISSN : 25492853 DOI : https://doi.org/10.29244/jitl.28.1.1-10

Core Subject : Agriculture, Social,

Agriculture, Biological Sciences & Forestry Environmental Science

Focus and Scope Journal of Soil Science and Environment Jurnal Ilmu Tanah dan Lingkungan is a media that presents articles on the results of research and studies of the latest developments in the fields of soil and land resources, water and environmental sciences as the main study material.

Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Tanah

Articles 306 Documents

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TEKNIK PENGENDALIAN ALIRAN PERMUKAAN YANG EFEKTIF PADA USAHATANI LABAN KERING BERLERENG A Noeralam; Sitanala Arsyad; Iswandi Anas
Jurnal Ilmu Tanah dan Lingkungan Vol 5 No 1 (2003): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

The aims of this study were to find out the effects of runoff control techniques and cropping patterns on the runoff rate of sloping upland farming. A series of factorial experiments were conducted on a Lithic Dystrudepts located at three different sloping uplands in Malang, East Java. The area belongs to the C type of Oldeman climatic zone. The three runoff control techniques were soil pit with vertical mulch (T1), soil pit with ridge and vertical mulch (T2), and soil pit with a ridge (T3). The two sequential cropping patterns were maize (Zea mays L.) - soybean (Glycine max (L.) Merr.) - maize (P1), and peanut (Arachis hypogaea) - maize - soybean (P2). The result indicates that runoff control techniques decrease rate of runoff by 88%, for soil pit with ridge technique, 86% for soil pit with ridge and vertical mulch technique, and 84% for soil pit with vertical mulch technique. The relationship ofrainfallJx) with run off(y) can be expressed by y = 0.05x; r = 0.92 in cropped plot andy = 0.30x; r = 0.90 in bare plot. Keywords: ridge, soil pit, vertical mulch

The Changes in Chemical and Physical Properties of Fibric Peat Pollowing Burning B.H Saharjo; A.D Nurhayati
Jurnal Ilmu Tanah dan Lingkungan Vol 5 No 1 (2003): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Fire is still used until today for land preparation because it is cheap, easy and relatively quick to be done, meanwhile, the impact is still not much yet known especially for peatland Due to that reason the research, especially on peat quality following burning, is highly important in order to understand the performance of it in the term of sustainability. The research objective was to understand the performance of burned peat quality compared to the condition before burning at fibric peat especially in the land preparation area using fire belong to the shifting cultivator. The site was located in the Pelalawan district, Riau province, Indonesia, during the dry season in the year 2001. To reach the research objective 2 plots of each 400 m) (20 m x 20 m) were established. The results of the research shown that soon the following burning, chemical properties of burned peat were increased significantly, while after one month part of them tended to decrease such as P, K, and base saturation. Three months after burning most of the chemical properties decreased while at six months a few of them were still increased such as P, Na and CEC. This research showed that the increasing of ash after burning was a temporary effect and others the negative impact is continued. Key words: fire, peat burning, peat quality

ISOLASI DAN SELEKSI BAKTERI FILOSFER PEMICU TUMBUH DARI DAUN PADI (ORYZA SATIVA L.) VARIETAS IR-64 D.A Santosa; N Handayani; Iswandi Anas
Jurnal Ilmu Tanah dan Lingkungan Vol 5 No 1 (2003): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Phylosphere bacteria are bacteria that live on the leave surface. Phylosphere bacteria have been reported to improve the growth of several plants such as rice. However, in Indonesia, the study concerning phylosphere bacteria is very rare. The aims of this study were to isolate and select phylosphere bacteria which are able to stimulate the growth of rice cultivar IR-64. Phylosphere bacteria were isolated from leaves of rice cultivar lR-64 grown at Ciherang (Sindangbarang) and at Pasirkuda (Ciomas) Bogor at the age of two, four and eight weeks after planting. The media used to isolate the phylosphere bacteria was Agar Ashbey. The surface of rice seeds was sterilized and then inoculated by deeping the rice seeds into bacterial suspension with a cell density of 1 x 106 cells ml-1. Leave inoculation was done by deeping leaves of three weeks old rice seedling into bacterial suspension with a cell density of 1 x 106 cells ml-1. Parameters measured were plant height, upper part biomas and root biomas. Phyllosphere bacteria were identified based on Bergey's Manual of Determinative Bacteriology. Nineteen isolates of phyllosphere bacteria were isolated from rice leaves, nine isolates were from Pasirkuda (Ciomas) and ten isolates were from Ciherang (Sindangbarang); eleven isolates were from rice phyllosphere and eight isolates were from endophyllosphere. Based on the age of the rice, two isolates were from two weeks old rice, nine isolates were from four weeks old rice and eight isolates were from eight weeks old rice. Phyllosphere bacteria significantly increased the plant height, upper parts biomass as well as root biomass. Six isolates were able to improve the growth of rice seedling IR-64 were Aureobacterium seperdae (two isolates), Arthrobacterium globiformis (one isolate) and Microbacterium lacticum (three isolates). Keywords: endophyllosphere, phyllosphere bacteria, rice cultivar IR-64

Metode-Metode Penetapan Biomassa Mikroorganisme Tanah secara Langsung dan Tidak Langsung: Kelemaahn dan Keunggulannya(Direct and Indirect Methods of Soil Microbial-Biomass Determination: Weakness and Strength) Gunawan Djajakirana
Jurnal Ilmu Tanah dan Lingkungan Vol 5 No 1 (2003): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Dalam dua dasawarsa terakhir ini telah terjadi peningkatan minat para pakar ilmu tanah dan lingkungan dalam menentukan jumlah total mikroorganisme dalam contoh tanah. Minat tersebut muncul karena para pakar menyadari pentingnya peranan mikroorganisme tanah di dalam berbagai proses biokimia yang terjadi di dalam sistem tanah, proses retensi dan pelepasan hara serta energi dalam tanah. Setiap usaha untuk menentukan aliran hara dan energi dalam sistem tanah harus mempertimbangkan peranan dari mikroorganisme tanah.

TEKNOLOGI PEMANFAATAN PASIR GUNUNG SEBAGAI PUPUK ALAMI: MEMPERCEPAT PELEPASAN UNSUR HARA Iskandar Iskandar; Indah Irwanti
Jurnal Ilmu Tanah dan Lingkungan Vol 5 No 1 (2003): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Volcanic sands, that contain relatively high content of dark minerals. can be used as a natural fertilizer. Unfortunately, the amount of the nutrients from this material available for the plant growth is very low. To increase the release of the nutrients to the environment. weathering process of the minerals should be accelerated. The objective of this research was to study the capability of urea and ammonium sulphate (ZA) in increasing the release of cations Ca2, Mg2, K1, Cu2 and Zn2 from the minerals. Urea and ZA used in this study is not only known as the source of N fertilizer but also found to destroy the floor of the storehouse made from concrete. Volcanic sands from Cimangkok and Ciapus were sieved with 100 mesh sieve and were mixed with each urea or ZA with the rate of 10%, 20% and 33%. The mixture was then 3 months incubated in wet conditions. The amount of Ca2 , Mg2, K1, Cu2 and Zn2 extracted with aquadest was measured at the 1st, 2nd and 3rd months. Due to the higher acidity, adding df the ZA to the sand from Cimangkok and Ciapus effectively increased the amount of extracted Ca2, Mg2 and K1 compared to the adding of urea. At the rate of 10%, adding of the ZA to the sand from Ciapus increased the amount of extracted Ca2 from 25.3 mg kg-1 to 800.1 mg kg-1 and K from 10.6 mg kg-1 to 108.3 mg kg-1. The highest concentration of Mg2 was found on the treatment of ZA with a rate of 33%. i.e. from 9.8 mg kg-1 to 161.7 mg kg-1 in sand from Ciapus. Adding of the urea or of the ZA affected the amount of extracted Cu2 and Zn2, however, there was no trend which rate effectively have increased the extracted these cations. Generally, the incubation time of I, 2 or 3 months is not significantly effected the amount of extracted cations. Keywords: Ammonium sulphate (ZA). natural fertilizer. nutrient, volcanic sand, urea

PENGARUH BAHAN ORGANIK (Puerariajavanica) DAN FOSFAT ALAM TERHADAP PERTUMBUHAN DAN SERAPAN P TANAMAN JAGUNG (Zea mays) PADA ANDISOL PASIR SARONGGE Sri Djuniwati; Arief Hartono; Lilik Tri Indriyati
Jurnal Ilmu Tanah dan Lingkungan Vol 5 No 1 (2003): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Phosphor (P) is the second esensial element after nitrogen which is needed by plants, however, its avaiiability is a problem in vulcanic ash soils such as Andisol. The objective of the research was to study the effect of organic matter (Pueraria javanica) and rock phosphate to the growth and P-uptake of corn plant in Andisol Pasir Sarongge. The experiment was conducted in the greenhouse of Soil Department, Faculty of Agriculture, Bogor Agriculture University. The design of the experiment was completely randomized design with two factors and three replications. The first factor was the rates of organic matter (0, 2.5%, and 5%) and the second factor was the rates of rock phosphate (0, 40 mg Plkg, and 80 mg Plkg), therefore there were 27 of treatments of experiment. Three kilogram of soil samples were put in the plastic bag and mixed with combination of organic matter and rock phosphate based on the treatments and then incubatedfor 4 week periods. After incubation, five seeds of corn were planted, and then were selected and left three plants after one week period. The soil moisture was maintained to water holding capacity. The results of the study showed that after 4 weeks of planting (4WAP), addition of organic matter increased plant height, dry matter and P- uptake of corn plant. However, the effect between the rate of 2.5% and 5% of organic matter to those variables above were not significantly different. The increased of plant height (4WAP), dry matter, and P-uptake due to addition of organic matter were in the range of 32-41%, 68-105%, and 84-92%, respectively. Meanwhile. addition of rock phosphate. and combination of organic matter and rock phosphate did not affect those variables. Keywords: Andisol, organic matter, Puerariajavanifa, P-uptake, rock phosphate

HUBUNGAN NISBAH K/Ca DALAM LARUTAN TANAH DENGAN DINAMIKA HARA K PADA ULTISOL DAN VERTISOL LAHAN KERING A Kasno; Abdul Rachim; Iskandar Iskandar; J. Sri Adiningsih
Jurnal Ilmu Tanah dan Lingkungan Vol 6 No 1 (2004): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

The objectives of this experiment were: (1) to study the effect of K and Ca fertilization on the dynamic of K, (2) to study the relationship between the dynamic of K in the soils with corn growth, and (3) to determine the optimum K requirement on different K/Ca ratio in the soil solution. Ultisol and Vertisol from the upland areas were used for the study. The determination of K and Ca dosage was based on the maximum soil sorption. The experiment was carried out in a greenhouse using the factorial randomized complete design with three replications. Four levels K dosage and three levels Ca dosage were applied in the experiment. The C-7 hybrid of corn was selected as an indicator plant. The result showed that adding K and Ca increased the dry weight of the plant in both Ultisol and Vertisol. In Ultisol, adding of K increased the amount of exchangeable Ca, Mg and K, and water-extracted K, whereas adding of Ca increased the exchangeable Ca and Mg and water-extracted K. The optimum K requirement for Ultisol was 58 mg kg-1 for K/Ca ratio <0.03 and 88 mg kg-1 for K/Ca ratio >0.03. In Vertisol, adding of K increased the exchangeable and water-extracted K, while adding of Ca increased both exchangeable and water-extracted Ca and Mg. The optimum K requirement was 55 mg kg-1 for the K/Ca ratio <0.03 and 171 mg kg-1 for the K/Ca ratio >0.03. Water extracted Ca and Mg showed a negative relationship with the K/Ca ratio both in Ultisol and Vertisol. The positive relationship between K/Ca ratios with water-extracted K was found in Ultisol, and with both exchangeable and water-extracted K in Vertisol. The increase of the K/Ca ratio increased the critical level of exchangeable K and water-extracted K. Keywords: K/Ca ratio, K dynamic, soil solution, Ultisol, upland, Vertisol

BEBERAPA SIFAT SPESIFIK ANDISOL UNTUK PEMBEDA KLASIFIKASI PADATINGKAT SERI: STUDI KASUS DI DAERAH CIKAJANG DAN CIKOLE, JAWA BARAT D. Djaenudin
Jurnal Ilmu Tanah dan Lingkungan Vol 6 No 1 (2004): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

The objective of this research was to study specific soil characteristics of Andisols as series differentiae. Five pedons of Cikajang and Cikole regions were studied. Both regions belong to the wet climate, udic soil moisture regime and isothermic temperature regime. As much as 32 soil samples were taken for analysis of physical, chemical and mineralogical properties follows the standard procedures of The Central Research and Development of Soil and Agroclimate laboratory. The specific soil properties can be used for soil series to differentiate each soil family. In soil family level, pedon Dn-1, Dn-2, and Dn-4 are classified as Typic Hapludand, medial-mixed, isothermic, and pedon Dn-3 and Dn-5 are classified as Thaptic Hapludand, medial-mixed, isothermic. Each soil family consists of two soil series. The properties of buried soil, color, texture, and soil reaction are used for soil series differentiate. Keywords: Andisols, soil series, specific soil characteristics, West Java

KAJIAN PENDUGAAN EROSI SUB DAERAH ALIRAN SUNGAI TUGU UTARA (CILIWUNG HULU) Nono Sutrisno Sa'ad
Jurnal Ilmu Tanah dan Lingkungan Vol 6 No 1 (2004): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

The research of erosion prediction method at the watershed scale was carried out at Tugu Utara (Upper Ciliwung) sub-watershed in Puncak, West Java, Indonesia from August 2000 to February 2001. The objectives of this study were: ( I ) to predict erosion at watershed scale through an approximation of sediment yield measurement at the outlet of subwatershed, and (2) multiple regression equation and Sediment Delivery Ratio (SDR) prediction. The experiment at Tugu Utara (upper Ciliwung) sub-watershed measured the discharge, surface erosion by soil pan method, sediment yield by sampling at the outlet and SDR. The result showed that the multiple regression equation and SDR Stiff Diagram can be used to predict the erosion at Tugu Utara (upper Ciliwung) sub-watershed. Keywords: Erosion prediction, multiple regression equation, sediment delivery ratio.

Abundance, Biomass and Diversity of Soil Fauna at Different Ecosystems in Jakenan, Pati, Central Java Rahayu Widyastuti
Jurnal Ilmu Tanah dan Lingkungan Vol 6 No 1 (2004): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

The assessment of soil fauna in three different ecosystems namely teak forest, home garden and fallow paddy field had been studied in Pati, Central Java. The soil fauna was collected using a soil corer of 20 cm diameter to the depth of 0-15 cm from 5 randomized points in the above ecosystems. The soil fauna was t$en extracted in a Berlese funnel extractor. Soil fauna in the home garden showed the highest abundance (2 940 individual m--), followed by teak forest (2 340 individual m-?) and fallow paddy (1 790 individual m-?). The home garden had also a higher soil fauna diversity (2.06) compared to the teak forest (1.82) and fallow paddy (1.67). In terms of soil fauna biomass, the teak forest had a higher value (961 mg m-3 compared to the home garden (368 mg m-3 and fallow paddy (309 mg m"). In these three ecosystems, two fauna groups, i.e. Collembola and Acari were the most abundant animals. Poor vegetation cover tends to reduce the population of soil fauna in the fallow paddy. field, whereas vegetation, found in the home garden and teak forest protected the soil surface from direct sunshine and maintained soil moisture. This condition presumably provided a more favorable habitat for soil fauna. Thus, vegetation cover appears important to maintain soil moisture and soil living-organisms. Keywords: soil fauna, abundance, diversity, ecosystem, vegetation cover

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Prof. Dr. Ir. Widiatmaka, DAA, IPU

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Department of Soil and Land Resources, Faculty of Agriculture, IPB University Jl. Meranti Wing 18 Lv 6, Darmaga Campus of IPB, Bogor 16680 Tel. 02518629360; Fax. 02518629358

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INDONESIA

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Home Page

OAI Link

Editorial Team

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Contact Name Prof. Dr. Ir. Widiatmaka, DAA, IPU

Contact Email jitl@apps.ipb.ac.id

Phone +6285217342125

Journal Mail Official jtl@apps.ipb.ac.id

Editorial Address Department of Soil and Land Resources, Faculty of Agriculture, IPB University Jl. Meranti Wing 18 Lv 6, Darmaga Campus of IPB, Bogor 16680 Tel. 02518629360; Fax. 02518629358

Location Kota bogor, Jawa barat INDONESIA

Abstract

Abstract

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Contact Name
Prof. Dr. Ir. Widiatmaka, DAA, IPU

Contact Email
jitl@apps.ipb.ac.id

Phone
+6285217342125

Journal Mail Official
jtl@apps.ipb.ac.id

Editorial Address
Department of Soil and Land Resources, Faculty of Agriculture, IPB University Jl. Meranti Wing 18 Lv 6, Darmaga Campus of IPB, Bogor 16680 Tel. 02518629360; Fax. 02518629358

Location
Kota bogor,

Jawa barat

INDONESIA