Inoculação de bactérias em diferentes formulações de fertilizantes organominerais. Uma análise exploratória
Inoculação de bactérias em diferentes formulações de fertilizantes organominerais. Uma análise exploratória
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DOI: https://doi.org/10.22533/at.ed.8208112612015
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Palavras-chave: Fertilizantes organominerais, sustentável, inoculante
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Keywords: Organomineral fertilizers, sustainable, inoculant
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Abstract: Organomineral fertilizers have been gaining prominence in the agricultural landscape as a sustainable alternative for partially or completely replacing conventional mineral fertilizers. Furthermore, the use of inoculants, which contain beneficial microorganisms for crops, appears to be another sustainable option, as they can promote plant growth and health. Therefore, this study aimed to conduct a literature review on the use of inoculants in organomineral fertilizers and also test the viability of inoculating three Bacillus species: B. megaterium, B. subtilis, and B. aryabhattai. The experimental study was developed in the soil microbiology laboratory, being carried out in different concentrations of organomineral fertilizers based on NPK (02-10-10, 04-14-08, 05-15- 15 and 10-10-10), storage time of the fertilizer plus the inoculant (Times 0: the inoculant was mixed with the fertilizer and the analysis was carried out; Time 5: the inoculant was mixed with the fertilizer, the mixture was stored for five days and the analysis was carried out; Time 7: the inoculant was mixed with the fertilizer, stored for seven days and the analysis was carried out) with the fertilizer and only the inoculant in different incubation times (20, 21, 47 and 48 hours), always in triplicate mode and with a negative control system to analyze possible contamination. Throughout the study, six test stages were carried out. In the first test, the plates were contaminated, making the results inaccurate. From the second to fifth tests, most plates showed accelerated growth after a short incubation period. However, some showed no growth at all. Furthermore, growth was observed on plates containing only fertilizer without inoculant. In the sixth and final test of the study, the test method was modified, increasing the inoculant dose and autoclaving the fertilizer. However, the results were not very promising. At the end of the tests, it was concluded that the inoculations did not demonstrate the expected results, but further research with other organominerals and other inoculant doses may improve the results already obtained.
- Natália Ledebuhr dos Santos