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All Journal BERITA BIOLOGI Kajen: Jurnal Penelitian dan Pengembangan Pembangunan
S Slamet
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Agriculture, Biological Sciences & Forestry Arts Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Social Sciences

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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
Uji Aktivitas Antibakteri Ekstrak, Partisi Metanol dan Partisi n-Heksan daun Ketapang (Terminalia Catappa L.)Terhadap Metanol Staphylococus aureus ATCC 25923 PK/5 Mumtaz Alfiy; Wulan Agustin Ningrum; S Slamet; Yulian Wahyu Permadi
E-Jurnal Kajen Vol 7 No 01 (2023): Kajen:Jurnal Penelitian dan Pengembangan Pembangunan
Publisher : Bapperida Kabupaten Pekalongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54687/jurnalkajenv7106

Abstract

Abstrak Tanaman Ketapang (Terminalia Catappa L.) adalah tanaman obat yang dapat digunakan sebagai obat tradisional pemanfaatan dari tanaman obat ini yaitu pada daunnya. Pada daun ketapang terdapat kandungan flavonoid, alkaloid, tannin, triterpenoid, steroid, resin, saponin, kuinon, dan fenolik. Senyawa tanin dan flavonoid daun ketapang diduga bersifat sebagai antibakteri. Antibakteri adalah zat yang dihasilkan oleh mikroba, terutama fungi, yang dapat menghambat pertumbuhan atau membasmi mikroba jenis lain. Tujuan dilakukannya penelitian ini adalah untuk mengetahui aktivitas antibakteri ekstrak, partisi methanol dan partisi n-Heksan daun ketapang (Terminalia Catappa L.). Metode yang digunakan untuk menguji aktivitas antibakteri dengan metode sumuran. Data yang diperoleh berupa diameter zona hambat kemudian dianalisa mengunakan One way ANOVA. Ekstrak daun ketapang Partisi n-Heksan, partisi Methanol dan ekstrak daun Ketapang (Terminallia Catappa L.) memiliki aktivitas antibakteri terhadap bakteri Staphylococus aureus ATCC 25923 PK/5 dengan konsentrasi hambat minimum (KHM) sebesar 30%. Perlu dilakukan penelitian lanjutan mengenai uji daya hambat daun ketapang terhadap bakteri lainnya serta diimplementasikan pada sediaan topikal
Co-Authors Idawati Idawati M Lina Mumtaz Alfiy S Gandanegara Wulan Agustin Ningrum Yulian Wahyu Permadi