Influence of Different Potassium Solubilizing Microbial Inoculants on Enzyme Activities and Biological Properties of Soil

Author: Nihala Jabin P. P. and Syed Ismail

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Abstract

Potassium (K) is an important nutrient required for plant growth. K present in soil include both available and non-available form and among this non-availble form is comparatively higher in concentration. Thus, many are following the addition of chemical fertilizers, and that finally depletes the soil quality. Here comes the importance of potassium solubilizing bacteria (KSB) because which could solubilize the insoluble K and make it available for plant uptake. To study this a pot trail was carried with soil planted brinjal to assess the influences of potassium solubilizing bacteria (KSB) on the enzyme activities and microbial count in soil. The effects were examined of nine inoculation-treatments (KSB-W1, KSB-PD-3-A, KSB-NP-3, KSB-PD-1-A, KSB-M-1, KSB-PD, KSB-M-2, KSB-PD-1-B, KSB-M-3) and a non-inoculation (control) treatment on the enzyme-activities and the microbial-count in brinjal soil. The results showed that the Use of Pseudomonas sp (KSB-PD-1-A) inoculation significantly improved dehydrogenase activity in soil. Whereas highest increase in activity of acid and alkaline phosphates in soil was found at KSB strain Bacillus sp (KSB-PD-3-A). The soil microbial- population at all growth stages of brinjal crop was also increased with Pseudomonas sp (KSB-PD-1-A) along with recommended dose of fertilizers.

Keywords

KSB, soil biological properties, enzyme activity, microbial count

Conclusion

All the inoculated treatments had higher enzyme activity and microbial count compared to control. Use of Pseudomonas sp (KSB-PD-1-A) inoculation significantly improved dehydrogenase activity in soil. Whereas highest rise in acid and alkaline-phosphates-activity in soil was found at KSB strain Bacillus sp (KSB-PD-3-A). The soil microbial-population at various growth stages of brinjal crop was also improved with Pseudomonas sp (KSB-PD-1-A) along with recommended dose of fertilizers.

References

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How to cite this article

Nihala Jabin P. P. and and Syed Ismail (2023). Influence of Different Potassium Solubilizing Microbial Inoculants on Enzyme Activities and Biological Properties of Soil. Biological Forum – An International Journal, 15(7): 66-70.