Agronomic Usefulness of Anaerobic Slurry on Tomato (Lycopersicum Esculentum) Seedlings
1 Department of Chemistry, Edo University, Iyamho, Edo State
2 Department of Chemistry, University of Benin, Benin City, Nigeria
* Corresponding author: muniratu.maliki@edouniversity.edu.ng
2 Department of Chemistry, University of Benin, Benin City, Nigeria
* Corresponding author: muniratu.maliki@edouniversity.edu.ng
Abstract
Current anaerobic digestion technologies are geared towards maximizing biogas yield and the subsequent use of the anaerobic slurries as soil amendments. However, only few studies have established the agronomic risk associated with the utilisation of anaerobic slurries. Therefore, this study evaluates the effect of agronomic use of anaerobic slurry on lycopersicum esculentum seedlings. L. esculentum is one of the most important vegetables worldwide. In this study, Palm esculentum Oil Mill Effluent (POME) collected from the Nigeria Institute for Oil Palm Research (NIFOR) was anaerobically digested at 1:1 effluent (E) to inoculum (I) ratio using the mesophilic technique. The physicochemical of the POME such as pH, Chemical Oxygen Demand (COD), lead, chromium, zinc, calcium, magnesium, phosphate, etc., were determined before and after anaerobic digestion. The anaerobic slurry was evaluated for their bio-fertility potential by using them as soil amendments at different doses: 0, 200, 400 and 600 ml/3 kg soil in a completely randomized design in triplicate followed by screenhouse trial. The physicochemical properties of the soil were determined using standard methods before and after the screenhouse experiment. The results showed that anaerobic digestion of the effluent was a successful biological treatment system with high COD removal efficiency (over 60 % reductions), while water properties such as total solids, nitrate, phosphate etc., were not considerably affected by the treatments. Result from the pre-plant soils revealed that the soil organic carbon, nitrogen, phosphorus, magnesium and calcium increased with increasing anaerobic slurry applications while the soil pH remained in the acidic region and the soil exchangeable acidity reduced. The plant height, number of leaves, leaf length, stem girth and total biomass yield by the plant significantly (p
Keywords
Anaerobic slurry
soil properties
tomato growth
heavy metals
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How to Cite
Muniratu, M., & Ikhuoria, E. U. (2020). Agronomic Usefulness of Anaerobic Slurry on Tomato (Lycopersicum Esculentum) Seedlings. Nigerian Journal of Materials Science and Engineering, 10(2), 51-59.
M. Muniratu, and E. U. Ikhuoria, "Agronomic Usefulness of Anaerobic Slurry on Tomato (Lycopersicum Esculentum) Seedlings," Nigerian Journal of Materials Science and Engineering, vol. 10, no. 2, pp. 51-59, December 2020.