Use of termitarium soil as a viable source for biofertilizer and biocontrol
Background Environmental deterioration arising from the misuse of pesticides and chemical fertilizers in agriculture has resulted in the pursuit of eco-friendly means of growing crop. Evidence has shown that biofertilizers and biocontrol can boost soil fertility and suppress soil pathogens without c...
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Veröffentlicht in: | Bulletin of the National Research Centre 2021-06, Vol.45 (1), p.1-8, Article 100 |
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Sprache: | eng |
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Zusammenfassung: | Background
Environmental deterioration arising from the misuse of pesticides and chemical fertilizers in agriculture has resulted in the pursuit of eco-friendly means of growing crop. Evidence has shown that biofertilizers and biocontrol can boost soil fertility and suppress soil pathogens without compromising the safety of the environment. Hence, the study investigated the use of termitarium soil as a viable source for biofertilizer and biocontrol.
Results
Twenty-seven soil samples were collected from nine different mound soil (household, farm and water bodies in a sterile sample bag). Aliquots of serially diluted samples were plated on nutrient agar, plate count agar, eosin methylene blue agar and MacConkey agar plates. Isolates were identified using standard microbiological techniques. Identified isolates were screened for plant growth-promoting properties using phosphate solubilization test, potassium solubilization test and indole acetic acid production test. Activities of the plant growth-promoting bacteria were carried out using antagonism by diffusible substance method and antagonistic activity of cell-free culture filtrate of bacterial isolates against
Ralstonia solanacearum
and
Fusarium oxysporum.
Two hundred bacterial isolates were recovered from the 27 soil samples. The most predominant isolate was
Bacillus
spp. Out of the 200 bacterial isolates, 57 were positive for phosphate solubilization test, potassium solubilization test and indole acetic acid production test. Out of the 57 isolates, six bacterial isolates had antagonistic activities against
Fusarium oxysporum
, while seven bacterial isolates antagonized
Ralstonia solanacearum.
Conclusion
The result showed that termite mound soil contains some useful bacteria that are capable of solubilizing phosphate and potassium and producing indole acetic acid which are the plant growth-promoting potentials and as well suppressing plant soil pathogen. |
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ISSN: | 2522-8307 2522-8307 |
DOI: | 10.1186/s42269-021-00560-8 |