Elena Maria Draghici, Virgil Scarlat, Maria Pele, Mariana Postamentel, Claudiu Somacescu<br>Usage of Perlite in Polluted Sandy Soils for Potato Crop

Elena Maria Draghici, Virgil Scarlat, Maria Pele, Mariana Postamentel, Claudiu Somacescu
Usage of Perlite in Polluted Sandy Soils for Potato Crop

Abstract:

After three years since pollution by oil, petroleum byproducts practically disappeared (it were found only 1.57 g/kg total petroleum hydrocarbons represented by heavy compounds such as asphaltenes) but, the soil was more salty of about 3.8 times higher (299.1 ppm) than the unpolluted one (78.7 ppm). A greenhouse experiment was carried out to study the response of potato (Solanum tuberosum) to different improved salt affected soils with Perlite (4 mm). The highest production (300g/plant), similar to the one obtained on unpolluted soil (320g/plant), was obtained on soil variant mixed with 75% Perlite while the production on plant grown on polluted soil was lowest (55g/plant). In the case of plants grown on the substrate that contained 75% Perlite, protein and sodium content both for tubers and leaves are very close to those as that found in plants grown on unpolluted soil. However, the sodium content in the tubers of potatoes grown on polluted soil was almost 2 time higher than in the tubers of potatoes grown on unpolluted soil. Our results show that the salty soil ameliorated with 75% Perlite offer growing conditions similar to those of an unpolluted soil. Keywords: salty soil, potato, production, protein, sodium, Perlite

Issue: 2016, Volume 67, Issue 11

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