scholarly journals Effects of Nitrogen Fixing and Phosphate Solubilizing Bacteria on Plant Development, Number of Bulb, Quality of Bulb of Some Tulip Cultivars

2019 ◽  
Author(s):  
Fazilet Parlakova Karagöz ◽  
Atilla Dursun
Keyword(s):  
Plant Development ◽  
Phosphate Solubilizing Bacteria ◽  
Nitrogen Fixing ◽  
Phosphate Solubilizing

scholarly journals PRODUKSI MASAL INOKULUM AZOTOBACTER, AZOSPIRILLUM DAN BAKTERI PELARUT FOSFAT DENGAN MENGGUNAKAN MEDIA ALTERNATIF

2010 ◽  
Vol 12 (2) ◽  
pp. 33
Author(s):  
Richard Gunawan ◽  
Iswandi Anas ◽  
Fahrizal Hazra
Keyword(s):  
Nutrient Broth ◽  
Phosphate Solubilizing Bacteria ◽  
Bacterial Cells ◽  
Microbial Cells ◽  
Nutrient Broth Medium ◽  
Growing Medium ◽  
Materials Used ◽  
Phosphate Solubilizing ◽  
The Cost

<p>Azotobacter, Azospirillum and phosphate solubilizing bacteria are the most common microbial inoculants used as biofertilizer. To have good quality of biofertilizer, the high number of inoculant cells and suitable carriers as well as the method of carrier sterilization are among the most important factors determined the quality of biofertilizer. Related to the number of inoculant cells in carriers, the growing medium used to cultivate the microbial cells play very important role. For mass production of microbial cells, the medium should be able to support fast growth of microbial cells. The price of medium should be reasonably cheap and the materials used in medium should be available easily. The purpose of this study was to obtain a cheap growing medium that can support high number of microbial inoculant cells and the components of the medium should be easyly obtain and the price is not expensive. The study was conducted at the Department of Soil Science and Land Resources, Faculty of Agriculture, Bogor Agricultural University (IPB). The results showed that the medium IPB RI-1 was able to support the growth of 1010 cfu ml-1 Azotobacter, 108 cfu ml-1 Azospirillum and 109 cfu ml-1 Phosphate Solubilizing Bacteria. The number of bacterial cells in Nutrient Broth medium was only 108 cfu ml-1. This means that the IPB RI-1 medium was able to produce 100-fold population of Azotobacter compared to the growth of this bacterium in Nutrient Broth and Phosphate Solubilizing Bacteria was 10-fold higher than population in Nutrient Broth medium. The costs of the IPB RI-1 and IPB RI-2 were much cheaper compared to the cost of Nutrient Broth medium. The cost of medium IPB RI-1 only 3% (IDR 945) and IPB RI-2 about 2% (IDR 690) of the cost of Nutrient Broth medium (IDR 27,752) per liter medium in the year of 2010.<br />Keywords : Alternative media, Azotobacter, Azospirillum, Nutrient Broth, Phosphate Solubilizing Bacteria</p>

scholarly journals PENGARUH PUPUK HAYATI DAN DOSIS AZOTOBACTER SP. DALAM FITOREMEDIASI MENGGUNAKAN TANAMAN RAMI (BOEHMERIA NIVEA L. GAUD) PADA TANAH TERCEMAR HIDROKARBON MINYAK BUMI

2018 ◽  
Vol 22 (1) ◽  
pp. 13
Author(s):  
Gea Anggun Pratiwi ◽  
Diyan Herdiyantoro ◽  
Pudjawati Suryatmana
Keyword(s):  
Soil Fertility ◽  
Chlorophyll Content ◽  
Petroleum Hydrocarbon ◽  
Hydrocarbon Biodegradation ◽  
Phosphate Solubilizing Bacteria ◽  
Total Chlorophyll ◽  
Nitrogen Fixing ◽  
Nitrogen Fixing Bacteria ◽  
Total Chlorophyll Content ◽  
Phosphate Solubilizing

Phytoremediation in soil contaminated with petroleum hydrocarbon is a technology to remediate contaminant using plant as nutrient availability facilitator for degrading microbials in the rhizosphere. Phytoremediation can be promoted by biofertilizers containing nitrogen fixer, phosphate solubilizer, and mychorrizal for improving soil fertility, also Azotobacter sp. which produces biosurfactant. The purpose of this research was to determine the effects of biofertilizers and doses of Azotobacter sp. on enhancing of petroleum hydrocarbon biodegradation efficiency, nitrogen fixing bacteria and phosphate solubilizing bacteria population, and total chlorophyll content in ramie leaves. This research was carried out from September 2016 to April 2017 at Laboratory of Soil Biology, Laboratory of Soil Fertility and Plant Nutrition, also Greenhouse and Field Station Faculty of Agriculture Universitas Padjadjaran. This research used factorial randomized complete block design with two factors consisted of biofertilizers (control, nitrogen fixing bacteria, phosphate solubilizing bacteria, phosphate solubilizing fungi, mychorrizal, and biofertilizer consortium) and doses of Azotobacter sp. (control, 1%, and 2%). The results of experiment showed there was an interaction effect between biofertilizer of phosphate solubilizing fungi and 2% dose of Azotobacter sp. on the enhancement of total chlorophyll content in ramie leaves.

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