Effect of Oil Spillage on Cassava Production in Niger Delta Region of Nigeria

摘要

Aims: To examine the effect of oil spillage on cassava farm land, yield and land productivity. Place and Duration of Study: Niger Delta region of Nigeria between January and October, 2012. Methodology: Delta State was purposively chosen from the Niger Delta region for the study. A random sampling technique was employed to select 17 cassava farmers each from three (3) oil spillage communities (Otor-Udu, Olomoro and Uzere) and three (3) non-oil spillage communities (Egini, Aradhe and Ellu), giving a total sample size of 102 respondents for the study. Data analysis was done using descriptive statistics, Likert scale, t-statistic and regression analysis. Results: The results showed that the major significant effects of oil spillage on cassava production perceived by the farmers included crop failure, poor yield, rotting tubers, and stunted crop growth with mean scores of 4.80, 4.78, 4.75 and 4.75 respectively. Others included increased soil temperature and toxicity (mean: 4.73), reduction of soil fertility (mean: 4.70), degradation of farm land (mean: 4.70) and low land productivity (mean: 4.70). The results further indicated that the cassava farm size, yield and land productivity in oil spillage affected communities were significantly (p < 0.01) lower than those of the non-oil spillage communities by 0.61 ha, 6119 metric tonnes (MT) and 1447 MT/ha respectively. These represent significant reduction of 36, 48 and 20% of these variables in the oil spillage affected communities respectively. About 45% of the variation in land productivity in cassava production was influenced by oil spillage and the farmers’ farming experience. The productivity increased with increase in farming experience but decreased with increase in oil spills. Conclusion: Constant maintenance of the oil pipelines and tankers to prevent corrosion and checking of the activities of saboteurs which often destroy oil pipelines will reduce the incidence of oil spillage, hence increasing cassava production in the Niger Delta region. There is need for further study to know the adaptation measures the farmers employed to minimize the adverse effects of oil spillage on their production; and the mitigating measures by government and the oil companies to deal with oil spillage.