Rahayu, Febriana Puji (2017) Viabilitas Biofertilizer Berbahan Baku Azotobacter pada Media Pembawa Padat Berbentuk Granul. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Azotobacter merupakan bakteri aerob yang banyak dijumpai di rhizosfer dan mampu memfiksasi nitrogen. Azotobacter A1b, A3, A6, A9, dan A10 yang diisolasi dari lahan Eco Urban Farming ITS selain mampu memfiksasi nitrogen dan juga melarutkan fosfat dan kalium. Berdasarkan potensi konsorsium, Azotobacter tersebut dapat digunakan sebagai agen pengomposan untuk biofertilizer curah. Produk biofertilizer supaya mudah digunakan maka memerlukan pengemasan dengan mengubah biofertilizer bentuk curah ke bentuk granul. Penggunaan bahan perekat tepung tapioka, tanah liat, dan gum arabika masing-masing sebesar 5%. Biofertilzer granul dengan masa simpan bulan ke 0, 1, dan 2 masing-masing dianalisis kandungan nitrat tersedia, fosfat terlarut, kalium tersedia dan viabilitas Azotobacter.
Hasil Biofertilizer berbentuk granul dengan konsorsium Azotobacter pada ketiga bahan perekat mempunyai viabilitas yang hampir sama. Bahan perekat tepung tapioka lebih efektif digunakan, dapat mempertahankan nutrisi (NPK), harga ekonomis, proses dispersi cepat, dan mempunyai nutrisi (NPK) lebih tinggi dibandingkan gum arab dan tanah liat setelah penyimpanan 2 bulan.
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Azotobacter is an aerobic bacteria that is found in rhizosphere and have ability to fix nitrogen. Azotobacter A1b, A3, A6, A9, and A10 which were isolated from the Eco Urban Farming ITS field not only able to fix nitrogen but also dissolve phosphate and potassium. Based on the potential of the consortium, the Azotobacter can be used as a composting agent for bulk biofertilizer. The biofertilizer product requires packaging by converting the bulk biofertilizer to granule to make this product more easy to use. It was used adhesives of tapioca starch, clay, and gum arabica are 5% each. Granular biofertilizer with a shelf life of 0, 1, and 2 months respectively analyzed nitrate availability, phosphate dissolved, potassium availability, and viability of Azotobacter
The result is the viability on all three adhesives of granular biofertilizer with Azotobacter consortium has same. Tapioca starch adhesives are more effectively used, can maintain nutrients (NPK), economical prices, fast dispersion process, and higher of nutrients (NPK) than gum arab and clay after 2 months storage.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | Azotobacter, Biofertilizer Granul, Viabilitas. |
| Subjects: | Q Science Q Science > QR Microbiology |
| Divisions: | Faculty of Mathematics and Science > Biology > 46201-(S1) Undergraduate Thesis |
| Depositing User: | Febriana Puji Rahayu |
| Date Deposited: | 21 Aug 2017 08:04 |
| Last Modified: | 05 Mar 2019 03:35 |
| URI: | http://repository.its.ac.id/id/eprint/41924 |
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