«Environmental protection in oil and gas complex»

Assessment of the phytotoxic effect of oil pollution in relation to higher plants on the example of southern chernozems of the Samara region

UDC: 622.88
DOI: -

Authors:

¹ SamaraNIPIneft, Samara, Russia

Keywords: land reclamation, phytotoxic effect, oil pollution, Avena sativa, Brassica rapa, test object, southern chernozem, limiting indicator

Annotation:

The article is devoted to the study of oil-contaminated soils phytotoxic effect in the Samara region. The data of laboratory studies, conducted to assess the effect of various concentrations of petroleum products on the growth and development of oats (Avena sativa) and oilseed radish (Brassica rapa) are presented. The obtained data were processed statistically, regression equations were compiled and the values of DK20 – the concentration of oil causing a phytotoxic effect of 20 % or more – were calculated. It was found that based on the DK20 assessment on the 21st day of the study, the most sensitive parameter of southern chernozem turned out to be the average shoot length of plants. The value of the obtained indicator was 2,96 g of petroleum products per 1 kg of ordinary chernozem soil. At the end of the test, the most sensitive parameter was the number of flowers per plant. The value of the obtained indicator was 4,66 g of oil products per 1 kg of southern chernozem soil. Based on the data obtained, the limiting indicators of the phytotoxic effect of oil contamination on higher plants are determined using the example of southern chernozems of the Samara region at various stages of the life cycle. The research results are a prerequisite for the analysis and assessment of the permissible oil content and products of its transformation in soils after reclamation.

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