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Centrosema pubescens plant, notice the slender stem, flower, triple leaflets and long pods with seeds
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Evaluation of microbial loads and physico-chemicals of cassava mill effluent simulated soil was carried out using standard microbiological and biochemical techniques. This was to determine the effect of cassava mill effluent (CME) on rhizosphere microbial loads, physicochemical properties, nitrogenous salt and heavy metals. The results showed that...
Citations
... This agrees with the findings of Uzochukwu et al. [19]. It also corroborates the findings of Agbo et al. [20], who reported that increase in heavy metals could be traced to the use of wastewater for irrigation and probably due to extensive use of organic fertilizer and/or solid manure. The study further revealed that CME effect on the physicochemical determinants (pH, Ca, Mg, K) and heavy metals determinants (Fe, Zn, Co, Ni, Pb and Mn) was concentration determinant. ...
The influence of cassava mill effluent on the microbial community of the soil was determined using viable counts method. Soil samples were collected from different sites (Locations A, B, C and D) impacted with cassava mill effluent, and also from sites unimpacted with cassava mill effluent, which served as control. The result of analysis of the impacted soil showed that the counts of Total Heterotrophic Bacteria, Total Coliforms and Total Fungi ranged from 2.0x103 CFU/ml to 2.3x104 CFU/ml, 1.9x102 CFU/ml to 1.5x104 CFU/ml and 1.4x102 CFU/ml to 2.2x102 CFU/ml respectively. These values were lower compared to the values (3.4x105 CFU/g to 3.6x106 CFU/g, 2.1x106 CFU/g to 3.3x106 CFU/g and 2.1x104 CFU/g to 3.0x104 CFU/g respectively) obtained from the unimpacted soils (control). The identification process of the isolates revealed the presence of the following bacteria; Bacillus spp., Micrococcus spp., Klebsiella spp., Pseudomonas spp., Staphylococcus spp., Salmonella spp. The fungal isolates from the effluents were identified to be Aspergillus spp., Rhizopus spp. and Mucor spp. The results obtained indicates that effluents from cassava mill effluent have a great impact on the microbial population of the soil. Since its application causes change that affects the microbial population and diversity, its continuous disposal could lead to decreased soil fertility and consequent low crop yield. Therefore, cassava mill effluents should be subjected to treatments that reduces their harmful substance content before disposal.
... Cassava mill effluent creation has expanded emphatically because of expansion in cassava production. This mill effluent should be appropriately control prior to releasing forestall nitrogen-fixing deficiency microorganisms (Agbo et al., 2021). Technical analysis revealed that discharged cassava processing effluent if not control may cause serious harm to the ecosystem (Antia et al., 2021). ...
The research aims reviewed impact of the Cassava Processing Mill Effluent (CME) on the physco-chemical properties of soils. Collected samples of three chosen areas at the Igbatoro community, Akure, Ondo State, Nigeria and labeled as A B C. Soil samples free from cassava mill effluent were likewise gathered from two unique areas marked D and E to serve as control samples at an interval of 15 cm depth from the top. Chemical changes occurred in the soil because of the release of effluent from cassava handling plants; the soil samples collected were analyzed in the laboratory utilizing the Atomic Absorption Spectrometry (AAS) method. The accompanying physical and chemical parameters were investigated; soil texture, soil porosity, particle size, TOC, pH, electrical conductivity, Pb, Zn, Cr, Fe, K, Ca, and Na. Results were compared with the result obtained from the control site Federal Environmental Protection Agency (FEPA) and World Health Organization (WHO) standards. Analysis shows that the soil samples with CME exceeds the WHO and FEPA standards. The result shows that the CME has contaminated the soil and made it unsatisfactory for agricultural purposes; this also affected the environment and the soil organic matter. Based on WHO and FEPA standard regulations, these metals exhibit hazardous concentrations. There was no huge expansion in Pb and Cr grouping of CME samples with the control tests. The chemical concentration of CME and its consequences for the soil propose its true capacity as a bio fertilizer particularly for K and Na contents. Findings shows that the effluent has great effect on the surrounding soil, and which leads to soil pollution, remediation should be practice.
