Effect of Cassava mill effluent on some soil chemical properties and the growth of fluted pumpkin (Telfairia occidentalis Hook F.)

Abstract

Abstract:In the trials, Cassava mill Effluent was used for fluted pumpkin (Telfairia occidentalis) cultivation in order to verify the influence of the effluent on the growth and some soil chemical properties. In this regard, a completely randomized and randomized complete block designs were used in the greenhouse and field trials respectively with 6 treatments replicated 3 times. In the greenhouse, the following rates of 0, 100, 200, 300, 400 and 500 ml per 5 kg topsoil were used while in the field trial, 0, 40000, 80000, 120000, 160000 and 200000 litres/ha were utilized. The rates used in the field were equivalent to those of greenhouse. In both trials, the cassava mill effluent was applied 2 weeks prior to transplanting the seedlings. Results indicated that the cassava mill effluent significantly (P < 0.05) increased soil pH, organic carbon, N, P, K, Ca, Mg, Na, Fe, Cu and Zn whereas the exchangeable acidity decreased significantly (P < 0.05) with corresponding increase in cassava mill effluent treatments. Except N and Na, which declined with corresponding increase in the cassava mill effluent treatments, an improved P, K, Mg, Ca, Fe, Cu and Zn components was achieved in cassava mill effluent polluted plants compared to control. The plant height, significantly (P < 0.05) decreased with increased cassava mill effluent treatment in the greenhouse trial while in the field trial, 120000 litres/ha was significantly (P < 0.05) higher than other treatments. In the greenhouse trial, significantly (P < 0.05) higher number of leaves was attained in 100 ml treatment compared to other treatments whereas in the field trial, the 120000 and 200000 litres/ha were significantly (P < 0.05) higher compared to other treatments

Removal of Heavy Metals in Cassava Mill Effluents with Saccharomyces cerevisiae isolated from Palm Wine

“…After treatment, the level of copper was within the limit of effluent to be discharged into surface water as recommended by FEPA [48]. The findings of the initial concentration in this study is comparable to the value 1.83mg/l reported by Orhue et al [11] 1.91mg/l reported by Adejumo and Ola [12] and lower than the value of 2.5mg/l [13] 2.60mg/l [14] and higher than the value of 0.00mg/l reported by Omomowo et al [15]. …”

“…After treatment, the level of iron was below limit of effluent to be discharged into surface water as recommended by FEPA [48]. The findings of the initial concentration of iron in this study is higher than the value 2.35 mg/l [12] 2.30mg/l [15] 2.00 mg/l [11] and lower than the value of 30.9 mg/l reported by Olorunfemi and Lolodi [14].…”

“…Zinc decreased by26.26% after 15 days of treatment with S. cerevisiae (Figure 1). The findings of the initial level of zinc in this study is comparable to the value 4.1 mg/l reported by Patrick et al [13] and lower than the value of 5.90mg/l reported by Olorunfemi and Lolodi et al [14] and higher than the value of 1.07mg/l [11] 0.00 mg/l [12,15].…”

“…The waste water is mostly discharged into the environment without treatment in developing country like Nigeria. Authors have variously reported that cassava mill effluent contain heavy metals [11][12][13][14][15]. Furthermore, authors have also reported cassava mill effluent is having impact on soil characteristics with regard to general physicochemical, microbial and heavy metals characteristics [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31].…”

Geo-accumulation Index, Enrichment Factor and Quantification of Contamination of Heavy Metals in Soil Receiving Cassava Mill Effluents in A Rural Community in the Niger Delta Region of Nigeria

“…The characteristics of the effluent have been widely reported in literatures. The general physico-chemistry and heavy metals of cassava mill effluents have been reported by Orhue et al (2014), Rim-Rukeh (2012), Adejumo and Ola (2011), Patrick et al (2011), Olorunfemi and Lolodi (2011), Omomowo et al (2015), Izah et al (2017a-c). Furthermore, the microbial characteristics have also been documented by authors (Nwaugo et al, 2007;Rim-Rukeh, 2012;Omotioma et al, 2013;Omomowo et al, 2015).…”