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JAFE DELSU is licensed under a Creative Commons Attribution 4.0 International License.
Based on a work at Journal of Agriculture and Food Environment.

JAFE Vol. 6 (1): 1-9, 2019

 

Effects of Cassava Peel Compost on Selected Properties of Soil

Nyorere, O.F., Bratte, A.G. and Okpo, S.O.

ABSTRACT
An experiment was carried out to determine the effects of cassava peel compost on some chemical properties of soil: soil pH, CN, selected soil nutrients (N, Ca, Mg and P), and selected heavy metals (Pb, Ni and Cd). Locally -sourced cassava peels were fermented for two weeks and reduced in size. Various proportions of cassava peels compost in soil, 10%, 20%, 30%, 40% and 50% corresponding to C10, C20, C30, C40 and C50, respectively were used. The mixtures were placed in plastic buckets, and placed in a greenhouse. Samples were collected in triplicate from each bucket weekly for four weeks, for analysis. Two way ANOVA and DMRT (5% significance level) were carried out on the data obtained, both for various compost mixes and over time. Results showed that soil pH increased with an increase in compost content. Cyanide values dropped to negligible levels. Nitrogen and lead values increased, but not significantly. Phosphorus values dropped significantly, while there were highly significant increases in soil calcium and magnesium contents as the compost mix ratio increased. Nickel and cadmium values also dropped insignificantly. Soil pH and cadmium levels increased over time, while cyanide, nitrogen, phosphorus, calcium, magnesium, lead and nickel reduced over time, but not significantly. It was concluded that the disposal of large quantities of cassava peels in agricultural soils should be discouraged as it increases soil alkalinity and reduces soil phosphorus, which are likely to have adverse effects on plant growth.

Keywords:

Cassava peel, Compost, Soil, pH, Soil nutrients, Heavy metals.

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