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Bambang Gonggo Murcitro
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INDONESIA
Jurnal Ilmu-Ilmu Pertanian Indonesia
Published by Universitas Bengkulu
ISSN : 14110067     EISSN : 26849593     DOI : https://doi.org/10.31186/jipi
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Jurnal Ilmu-Ilmu Pertanian Indonesia (JIPI) is a scientific journal that publishes research results related to resource issues and agricultural productivity widely, including Agroecotechnology, Plant Breeding, Soil Science, Plant Protection, and Agricultural Ecology.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Agronomi dan Ilmu Tanaman
Articles 7 Documents
 1 
Search results for , issue "Vol 9, No 1 (2007)" : 7 Documents clear
PERBEDAAN SIFAT-SIFAT TANAH VERTISOL DARI BERBAGAI BAHAN INDUK B. H. Prasetyo
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 9, No 1 (2007)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.9.1.20-31

Abstract

Vertisols is black and fertile soils, derived from various parent materials, dominated by smectite clay minerals, and charasterize by crack formation during dry season. Six soil profiles consisted of thirty two soil samples from dIfferent location were analyzed for their chemical and mineralogical composition at the laboratories of Soil Research Center for soil characteristics. Results indicate that the color matrix of Vertisols varies, hue range from 2.5Y to 10YR, color value varies from 2 to 6, and chroma range from 0 to 4. Clay mineral composition of Vertisols is dominated by smectite. Other clay minerals founded in the Vertisols are kaolinite, illite and vermiculite. The mineralogy composition of sand fraction is varies, some of them rich in weatherable minerals like andesine, amfibole, orthoclase, sanidin and the others are dominated by resistant minerals such as quartz and opaque. The mineralogical composition of Vertisols dependent on their parent material. The dominant cations in Vertisols are Ca++ and Mg++. Vertisols from volcanic materials is dominated by Ca++ and followed by Mg++ cations, Vertisols from limestone is dominated by Ca++, while Vertisols from peridotite is dominated by Mg++. All of the Vertisols studied have a high cation exchange capacity with pH’s range from 5.5 to 7.4. In using Vertisols for food plantation, should be consider the high content of Ca++, Mg++ and the water management. The soils should be atleast always in moist condition, otherwise soils become very hard and cracks when dry.
DAMPAK PEMANENAN KAYU BERDAMPAK RENDAH TERHADAP KERUSAKAN TEGAKAN TINGGAL DI HUTAN ALAM (Studi Kasus di Areal HPH PT. Suka Jaya Makmur, Kalimantan Barat) Muhdi Muhdi; Diana Sofia Hanafiah
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 9, No 1 (2007)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.9.1.32-39

Abstract

The objective of the study was to know the degree of residual stand damages caused by conventional timber harvesting and reduced impact logging in natural forest. The study showed that degree of residual stand damages based on tree population in conventional timber harvesting and reduced impact logging was 33.15% and 19.53% respectively. Based on the size injury of every individual tree, the degree of the trees  damages caused by timber harvesting in conventional timber harvesting and reduced impact logging  is as follow : trees heavy injury was 64.66% and 57.20%, trees medium injury was 20.30% and 24.00% and trees light injury was 15.03% and 18.80% respectively. These research results indicate that conventional timber harvesting in the tropical natural forest caused heavier damage on residual stand when compared with a reduced impact logging.
PENINGKATAN PRODUKSI DAN KECERNAAN BAHAN KERING Centrosema pubescens DAN Pueraria phaseoloides OLEH PEMUPUKAN BATUAN FOSFAT DAN INOKULASI MVA Dwi Retno Lukiwati
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 9, No 1 (2007)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.9.1.1-5

Abstract

Centrosema pubescens (centro) and Pueraria phaseoloides (puero) are important forage legumes as protein and mineral sources for ruminant livestock in the tropics.   However, most of the land that used for forage production is characterized by a low phosphorus content.   As the high cost of superphosphate is a major limiting factor, a combination of rock phosphate (RP) fertilization and vesicular-arbuscular mycorrhizae (VAM) fungi inoculation maybe a promising technique. A field experiment was conducted in Bogor during 7 months, on a latosolic soil (low pH and low available Bray II extractable P) to evaluate the effects of RP fertilization and VAM inoculation and their interaction on dry matter (DM) production and in vitro dry matter digestibility. A completely randomized block design with 3 replicates was used. The main experiment consisted therein the combination of three factors as follows 1) legume species (centro, puero), 2) VAM inoculation (with, and without VAM inoculation), and 3) rock phosphate fertilization (0, 44, 87, 131, and 175 kg P ha-1).  The period of defoliation was used as sub factor (defoliation I, II, and III).   Results showed that DM production and DM digestibility of puero was significantly higher (P<0.05) compared to centro after defoliation.  Dry matter digestibility of VAM inoculated puero was significantly higher (P<0.05) compared to uninoculated one. Rock phosphate fertilization significantly increased (P<0.05) DM production of VAM inoculated legume. Dry matter production was not significantly different (P>0.05) with or without VAM inoculation.  When inoculated, rock phosphate fertilization increased DM production of legume.   Success of VAM inoculation in the field affected by effectiveness of indigenous- VAM fungi or depending upon VAM inoculum potential.
POTENSI TIGA GENUS BAKTERI DARI TIGA RIZOSFER TANAMAN SEBAGAI AGENSIA PENGENDALI HAYATI PENYAKIT LINCAT Heru Adi Djatmiko; Triwidodo Arwiyanto; Bambang Hadisutrisno; Bambang Hendro Sunarminto
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 9, No 1 (2007)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.9.1.40-47

Abstract

Objectives of this research were to characterize three genera of bacteria isolated from three of crop rhizosphere, and to measure the ability of the antagonistic bacteria in suppressing lincat disease caused by Ralstonia solanacearum and Meloidogyne incognita. The research showed that the sixth bacteria were able to utilize some carbon and nitrogen compounds, degrade macromolecules, grew at different temperatures and salt contents, and grew at medium with chitin and pectin.  The bacteria isolated from pepper rhizosphere (Pf51, Ba4, Ba22), groundnut (Pf83), and eggplant (S4 dan S7) was included to fluorescent pseudomonads (Pf51 and Pf 83), Bacillus spp. (Ba4 and Ba22), and Streptomyces spp. (S4 and S7).  The sixth bacteria having the ability in antagonist.  The bacteria isolate having the best ability in suppressing Ralstonia solanacearum and Meloidogyne incognita was Streptomyces spp. (S4). The bacteria isolate having the best ability in suppresssing R. solanacearum by antibiosis and the inhibition mechanism by bacteriostatic was S4
HUBUNGAN ANTARA KANDUNGAN LIGNIN KULIT BENIH DENGAN SIFAT-SIFAT KHUSUS KULIT BENIH KACANG HIJAU Marwanto Marwanto
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 9, No 1 (2007)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.9.1.6-11

Abstract

Lignin content in  seed coat may have a direct effect on seed coat characteristics of mung bean  genotypes (Vigna radiata). This research was designed to study the variation of seed coat lignin content among mung bean genotypes and its relationship to permeability, seed electrolyte conductivity and hard seed.  Seeds of eleven mung bean genotypes were grown in research plots at Agriculture Faculty, Bengkulu University on February 2002 and hand harvested at R8 maturation stage. The plots were arranged in a randomized complete block design having three replications. Genotypic differences were evident for seed coat lignin content, seed coat permeability, seed electrolyte conductivity and hard seed. The seed coat lignin content contributed to variability in permeability, seed electrolyte conductivity and hard seed and closely related with permeability (r =0.75*), with seed electrolyte conductivity (r = - 0.93**) and with hard seed (r = - 0.71*). Overall, seed coat lignin content appears to have determining effects on seed coat characteristics.
PENGARUH BUNGKIL INTI SAWIT FERMENTASI DALAM PAKAN TERHADAP PERTUMBUHAN IKAN MAS ( Cyprinus carpio L.) M. Amri
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 9, No 1 (2007)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.9.1.71-76

Abstract

The study effect of Fermented Palm Kernel Cage (FPKC) in feed on growth of Cyprinus carpio L. was done to evaluate the utilization of palm kernel cage increasing the quality by fermentation technology as a feed in ration to Cyprinus carpio L. performance and get a good level in ration. This experiment was set in a Randomized Completely Design with four treatments and four replicates.  Treatments were diets with : A (12% PKC), B (15% FPKC),  C (18% FPKC), and D (21% FPKC). Results of experiment indicated that the feed consumption body weight gain, feed conversion and income over feed cost was in proved by 18% FPKC in the diet.
DAMPAK PERUBAHAN PENUTUPAN LAHAN TERHADAP EVAPOTRANSPIRASI AKTUAL Eleonora Runtunuwu
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 9, No 1 (2007)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.9.1.12-19

Abstract

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