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All Journal Jurnal Sains dan Teknologi Nuklir Indonesia (Indonesian Journal of Nuclear Science and Technology) BERITA BIOLOGI
M Lina
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Energy Environmental Science Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Physics

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PENGARUH INOKULASI SEJUMLAH ISOLAT AZOSPIRILLUM TERHADAP PERTUMBUHAN DAN SERAPAN PUPUK N PADA TANAMAN JAGUNG Gandanegara, S; Slamet, S; Idawati, Idawati; Lina, M
BERITA BIOLOGI Vol 6, No 3 (2002)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (300.229 KB) | DOI: 10.14203/beritabiologi.v6i3.1222

Abstract

Two greenhouse experiments had been conducted to study the effect of inoculation of some Azospirillum isolates on maize growth in sand culture and sterilized soil. In the first experiment some growth parameters were used, i.e., root length and root surface area, dry weight of root, shoot, and shoot length. Inoculation enhanced plant growth, as shown by increased of all plant growth parameters. Root length and root surface area were sensitive parameter and could be used for evaluating the effect of inoculation. The best plant perfomance achieved by inoculation with Azospirillum isolates Btl No. 8 and No. 11 and with the increase of plant biomass 24 and 53% over control, respectively. In the second experiment, six selected Azospirillum isolates were evaluated on growth, N uptake, and N contribution15 in maize plants. N isotope dilution method was used to measure the N contribution from fertilizer. Uninoculated control plants showed low dry weight and contribution from N fertilizer, 3.09 gram and 10.84%. Inoculation increased mineral nutrition expressed in higher N plant yield and N contribution from fertilizer. N plant yield ranging from 147 to 189 mg N as compared to 134 mg N in control plants. The high contribution of N fertilizer (13.21-14.35 %) achieved by inoculation with Azospirillum isolates No. 6, 7, 8, and RDCB Az 1
PENGARUH IRADIASI SINAR GAMMA PADA PERTUMBUHAN STREPTOCOCCUS AGALACTIAE SEBAGAI BAHAN VAKSIN PENYAKIT MASTITIS PADA SAPI PERAH B Jeanne Tuasikal; I Sugoro; T Tjiptosumirat; M Lina
Jurnal Sains dan Teknologi Nuklir Indonesia (Indonesian Journal of Nuclear Science and Technology) Vol 4, No 2 (2003): Agustus Edisi Khusus 2 2003
Publisher : BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jstni.2003.4.2.1696

Abstract

PENGARUH IRADIASI SINAR GAMMA PADA PERTUMBUHAN STREPTOCOCCUS AGALACTIAE SEBAGAI BAHAN VAKSIN PENYAKIT MASTITIS PADA SAPI PERAH. Suatu penelitian dilakukan untuk mengetahui pengaruh iradiasi sinar gamma dalam melemahkan S. agalactiae sebagai bakteri dominan penyebab mastitis pada sapi perah. Penelitian ini bertujuan memperoleh dosis iradiasi yang tepat untuk bahan pembuatan vaksin mastitis iradiasi. Bakteri S. agalactiae yang telah mencapai pertengahan fase log dari pertumbuhannya dibagi menjadi 6 kelompok perlakuan, dan masing-masing diiradiasi dengan dosis 0; 0,2; 0,4; 0,6; 0,8; dan 1 kGy. Setelah ditanam pada medium BHI agar, dilakukan penghitungan koloni bakteri untuk penentuan LD50-nya. Hasil penghitungan koloni S. agalactiae adalah masing-masing 7,5x108; 5,0x107; 7,0x106; 9,5x105; 1,5x104; dan 3,5x103sel/mL. Dari pengamatan hasil tersebut menunjukkan bahwa semakin tinggi dosis iradiasi semakin rendah jumlah sel/mL yang masih bertahan hidup dan LD50 di bawah dosis 0,2 kGy.
PENGARUH INOKULASI SEJUMLAH ISOLAT AZOSPIRILLUM TERHADAP PERTUMBUHAN DAN SERAPAN PUPUK N PADA TANAMAN JAGUNG S Gandanegara; S Slamet; Idawati Idawati; M Lina
BERITA BIOLOGI Vol 6, No 3 (2002)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v6i3.1222

Abstract

Two greenhouse experiments had been conducted to study the effect of inoculation of some Azospirillum isolates on maize growth in sand culture and sterilized soil. In the first experiment some growth parameters were used, i.e., root length and root surface area, dry weight of root, shoot, and shoot length. Inoculation enhanced plant growth, as shown by increased of all plant growth parameters. Root length and root surface area were sensitive parameter and could be used for evaluating the effect of inoculation. The best plant perfomance achieved by inoculation with Azospirillum isolates Btl No. 8 and No. 11 and with the increase of plant biomass 24 and 53% over control, respectively. In the second experiment, six selected Azospirillum isolates were evaluated on growth, N uptake, and N contribution15 in maize plants. N isotope dilution method was used to measure the N contribution from fertilizer. Uninoculated control plants showed low dry weight and contribution from N fertilizer, 3.09 gram and 10.84%. Inoculation increased mineral nutrition expressed in higher N plant yield and N contribution from fertilizer. N plant yield ranging from 147 to 189 mg N as compared to 134 mg N in control plants. The high contribution of N fertilizer (13.21-14.35 %) achieved by inoculation with Azospirillum isolates No. 6, 7, 8, and RDCB Az 1
Co-Authors B Jeanne Tuasikal Gandanegara, S I Sugoro Idawati Idawati Idawati Idawati S Gandanegara S Slamet S Slamet, S T Tjiptosumirat