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Jurnal Ilmu Tanah dan Lingkungan (Journal of Soil Science and Environment)
Published by Institut Pertanian Bogor
ISSN : 14107333     EISSN : 25492853     DOI : -
Core Subject : Agriculture, Social,
Agriculture, Biological Sciences & Forestry Environmental Science
Jurnal Ilmu Tanah dan Lingkungan merupakan media yang menyajikan artikel mengenai hasil penelitian dan telaah perkembangan mutakhir dalam bidang ilmu tanah, air, dan ilmu lingkungan sebagai bahan kajian utama.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Tanah
Articles 6 Documents
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Search results for , issue "Vol 5 No 1 (2003): Jurnal Ilmu Tanah dan Lingkungan" : 6 Documents clear
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (302.187 KB) | DOI: 10.29244/jitl.5.1.13-16

Abstract

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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (443.954 KB) | DOI: 10.29244/jitl.5.1.1-6

Abstract

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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (433.62 KB) | DOI: 10.29244/jitl.5.1.7-12

Abstract

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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (827.767 KB) | DOI: 10.29244/jitl.5.1.29-38

Abstract

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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (351.488 KB) | DOI: 10.29244/jitl.5.1.23-28

Abstract

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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (454.041 KB) | DOI: 10.29244/jitl.5.1.17-22

Abstract

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

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