Effects of municipal solid waste compost and petroleum hydrocarbon decomposing bacteria on nutrient uptake by the Cordia myxa L. seedlings in soil contaminated with crude oil.

Extraction and refinement of fossil fuels have led to contaminate of soil resources and also caused to make a considerable part of lands out of reach. This study aimed to evaluate the effect of different levels of organic matter and hydrocarbon decomposing bacteria on nutrient uptake of Cordia myxa seedlings. Treatments included crude oil (0, 3 and 6 w/w) municipal solid waste compost (0, 5 and 10% v/v) and bacteria (with and without bacteria of psu141 and psu27ps). The results showed that the highest concentrations of nitrogen in shoot, phosphorus, potassium, manganese, iron and zinc in shoot and root were found in compost 10%, with 3.69%, 0.22%, 0.15%, 1.82%, 1.52% and 94.91, 123.66, 110.15, 1086.01, 32.44, and 79.67 mg/kg, respectively, and the concentrations of these elements in the presence of bacteria were significantly higher than the control. In general, the presence of biological factors caused an increase in the absorption of nutrients and improvement of the nutritional status of plants under oil pollution stress conditions.