Root and tuber crop market system in Nigeria: macroeconomic determinants

Onwusiribe, Ndubuisi Chigozirim and Oteh, Ogbonnaya Ukeh and Agwu, Nnanna Mba and Okpokiri, Chibuzo and Oloveze, Ambrose Ogbonna (2024) Root and tuber crop market system in Nigeria: macroeconomic determinants. Journal of Agribusiness Marketing (Malaysia), 12. pp. 32-50. ISSN 2289-5671

Root and tuber crops are food security crop and thus have wide market preference and value in many economies. However, they are constrained by a convergence of external factors that impact on their production, marketing and export potential. The study opened conversations on the market system of root and tuber crops and examined macroeconomic variables that influence Nigeria market commercialization drive and competitiveness in both regional and international trade, using cross sectional data from 1960 to 2016 sourced from the Central Bank of Nigeria (CBN) statistical bulletin, Food and Agriculture Organization (FAO) database and World Bank Development indicators. Analytically, the study employed econometric tools such as unit root tests, trend analysis (i.e. quadratic equation), Generalized Method of Moments, Malmquist productivity index, Autoregressive Distributed Lag (ARDL) model. Findings revealed that macroeconomic variables of exports, imports, and inflation, exchange rate, tariff, price and world exports had long-run and short-run impacts on the exports of root and tuber crops. The study recommends market-oriented strategy by caution against protectionist led interventions such as outright ban on importation, as they impact negatively on market behaviour; rather advocated for effective policing of border to check smuggling, also improvement in policies that improve production to check price instability, which characterize root and tuber crop marketing in Nigeria. There is need for effective regulation and policies that protect risk and guarantee returns in the supply chain of root and tuber crops so that supply-chain actors can benefit substantially from international trade.

Full text available from: Official URL: https://www.fama.gov.my/documents/20143/722221/Roo...

Abstract

Root and tuber crops are food security crop and thus have wide market preference and value in many economies. However, they are constrained by a convergence of external factors that impact on their production, marketing and export potential. The study opened conversations on the market system of root and tuber crops and examined macroeconomic variables that influence Nigeria market commercialization drive and competitiveness in both regional and international trade, using cross sectional data from 1960 to 2016 sourced from the Central Bank of Nigeria (CBN) statistical bulletin, Food and Agriculture Organization (FAO) database and World Bank Development indicators. Analytically, the study employed econometric tools such as unit root tests, trend analysis (i.e. quadratic equation), Generalized Method of Moments, Malmquist productivity index, Autoregressive Distributed Lag (ARDL) model. Findings revealed that macroeconomic variables of exports, imports, and inflation, exchange rate, tariff, price and world exports had long-run and short-run impacts on the exports of root and tuber crops. The study recommends market-oriented strategy by caution against protectionist led interventions such as outright ban on importation, as they impact negatively on market behaviour; rather advocated for effective policing of border to check smuggling, also improvement in policies that improve production to check price instability, which characterize root and tuber crop marketing in Nigeria. There is need for effective regulation and policies that protect risk and guarantee returns in the supply chain of root and tuber crops so that supply-chain actors can benefit substantially from international trade.

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Item Type:	Article
AGROVOC Term:	root crops
AGROVOC Term:	marketing
AGROVOC Term:	trade
AGROVOC Term:	production
AGROVOC Term:	exports
AGROVOC Term:	macroeconomics
AGROVOC Term:	supply chains
AGROVOC Term:	risk management
AGROVOC Term:	forecasting
AGROVOC Term:	food security
Geographical Term:	Nigeria
Uncontrolled Keywords:	Export, import, market, root, tuber, macroeconomic
Depositing User:	Nor Hasnita Abdul Samat
Date Deposited:	23 Feb 2026 04:51
Last Modified:	23 Feb 2026 04:51
URI:	http://webagris.upm.edu.my/id/eprint/2658

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