Umudike Journal of Engineering and Technology

Michael Okpara University of Agriculture, Umudike


DEVELOPMENT OF AN UNDERGROUND STORAGE STRUCTURE FOR COCOYAM CORMELS

Oriaku, L.
Department of Agricultural and Bio-Resources Engineering, Michael Okpara University of Agriculture Umudike, P.M.B.7267, Nigeria;National Root Crop Research Institute Umudike, Abia State Nigeria

Ndukwu, M. C.
Department of Agricultural and Bio-Resources Engineering, Michael Okpara University of Agriculture Umudike, P.M.B.7267, Nigeria



ABSTRACT

An underground composite storage structure with plant material ash incorporated into the walls as a botanical treatment to make a composite wall was designed and tested with cocoyam cormels of the colocasia esculente species. When the temperature of each pit is compared with the ambient value the pit with palm nut shell ash maintained the lowest temperature difference of 0.87oC while the highest was the pit with no treatment which had a temperature difference of 1.03oC. The ash of various plant materials had a considerable impact on the average weekly temperature.  The walls made of iroko and palm kernel ash had the lowest percentage weight loss of 28% after 13 weeks of storage in cocoyam initial weight which is lower by 2.5 to 6.47% obtained with other indigenous cocoyam storage methods. This trend suggests that Iroko tree back and palm kernel shells are rated best among plant materials for cocoyam storage, with a high degree of weight retention and weight loss reduction of cocoyam. The pit integrated with the Iroko tree bark had the largest percentage drop in moisture content compared to other treatments, with a loss of 8.8%. After storage, sprouting occurred in all three replications. This demonstrates that the cormels preserved in the subterranean storage technique for storing cocoyam for planting during the farming season are viable. As a result, farmers are advised to employ this form of storage.


Keywords: underground storage; cocoyam; agricultural products; botanical treatments


https://doi.org/10.33922/j.ujet_v9i2_10
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Published
Monday, November 06, 2023

Issue
Vol.9 No.2, December 2023

Article Section
GENERAL

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