Dynamics of growth of higher plants in reclaimed oil-contaminated alluvial meadow soils of different granulometric composition
Keywords:
oil, alluvial meadow soil, phytotoxicityAbstract
In laboratory chronic experiments, the influence of the oil content in the reclaimed alluvial meadow medium loamy and sandy loam soil on the yield of spring wheat biomass and sowing peas was determined. It was shown that peas are more sensitive to the residual content of oil products in the soil. When wheat is cultivated on reclaimed oil-contaminated soils, the toxic effect is manifested only in the early stages of plant development. When growing peas on contaminated medium loamy soil, the inhibitory effect was not manifested only in the variant containing 8.6 g/kg of pollutant. In other cases, inhibition of pea growth was observed with a tendency to increase in time in the variant containing 14.3 g of oil per kg. The development of peas in the early stages on sandy soil containing a minimal amount of pollutant was accompanied by stimulation of plant growth, when this effect was leveled by the end of the chronic experiment. The cultivation of peas at the maximum tested pollutant content in medium loamy and sandy loamy soils led to a decrease in bio productivity. The stimulation effect was observed in variants containing 1.5 and 6.0 g/kg of oil.
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