Effect of Remediation of Crude Oil Polluted Inceptisols on Maize ( Zea mays ) Production Using Organic and Inorganic Fertilizers at Yenagoa, Bayelsa State

摘要

The efficacy of organic and inorganic fertilizers (poultry manure, Cow dung N.P.K. and Urea) as remediation materials in crude oil polluted inceptisols of the Meander belt zone of Yenegoa, Bayelsa State was evaluated using maize ( Zea mays ) as a test crop. A simple factorial experiment fitted into a randomized complete block design with four replicates and twenty four experimental plots and six treatments was used. Fifty six litres of Bony light crude oil at one percent pollutions level was also used. The remediation materials were poultry manure, cow dung, Urea and NPK. The result revealed that plots treated with poultry manure had the best performance in terms of maize seedling emergence (95 and 77.5%), seedling survivability (17.50 and 16.00%), maize plant height (132 and 126 cm), maize plant girth (4.65 and 4.90 cm), (7.00 and 5.50 cm) and (9.00 and 7.50 cm) at 2, 3 and 4 weeks after planting, leaf area (380 and 360 cm), (400 and 381 cm) and (430 and 405 cm) at 4, 5 and 6 weeks after planting, grain yield (2500 and 185 kg ha^-1) and straw yield (13187 and 12969 kg ha^-1) across seasons. This was followed by Cow dung, NPK and Urea in that order. The least was observed in the control. The results also revealed that poultry manure showed superiority over cow dung in amending crude oil degraded soils (Inceptisols). It was recommended that poultry manure be employed in the amendment of crude oil polluted soils.