|
Effects of hydrocarbons on temporal changes in soil and
crops
Ivica Kisic1*, Aleksandra Jurisic1,
Goran Durn2, Hana Mesic3 and
Sanja Mesic4
1
Faculty of Agriculture, University of Zagreb, Svetosimunska cesta 25,
Zagreb, Croatia.
2Faculty
of Mining, University
of Zagreb, Geology and Petroleum
Engineering, Pierottijeva 6, 10 000 Zagreb, Croatia.
3Croatian
Environmental Agency, Ksaver 208, Zagreb, Croatia.
4INA-NAFTAPLIN,
V Holjevca bb, Zagreb, Croatia.
*Corresponding author. E-mail:
ikisic@agr.hr.
Tel:
385 1 2393 959. Fax: 385 1 2393 981.
Accepted 2 July, 2010 |
|
Changes in soil chemical properties, plant density and crops
yield (maize, winter wheat, winter barley, soybean and
oilseed rape) grown in soil contaminated by different
degrees of crude oil and drilling fluids were monitored for
three years. Drilling fluids had a stronger impact on
chemical properties of the studied soil, while plant density
and yield were strongly affected by crude oil. The influence
of crude oil contamination on changes in soil chemical
characteristics, plant density and yield was significant
only during the first year of investigation. The problem of
soil contamination by TPH and PAH may be solved through soil
bioremediation or aeration by any kind of tillage practice.
The common agricultural management practices (inter-row
cultivation for spring row crops; management of stubble and
autumn ploughing for winter crops) and mineral fertilization
reduced the soil TPH and PAHs levels to a tolerable level
for production of field crops as early as the second year of
investigation.
Key words:
Soil, crops, crude oil, drilling fluids.
|
