The search for the best solutions to restore soil balance is essential for attaining a stable
and sustainable agricultural development worldwide. This research, which makes a contribution
to these investigations, focuses on four substances (two innovative ones: basalt flour, brown algal
extract, and two classic soil improvers: finely ground barley straw and compost) which can
potentially alleviate the inhibitory effect of Cd2+ on the soil environment. The following were
analyzed: the activity of acid phosphatase and alkaline phosphatase, counts of Pseudomonas sp.,
cellulolytic bacteria, copiotrophic bacteria and copiotrophic spore-forming bacteria, and the yield
of spring barley. Cadmium (Cd2+) was applied as CdCl2 · 2.5H2O in the following doses: 0, 4, 40,
80, 120, 160, and 200 mg Cd2+ kg-1 of soil. For a more complete assessment of the soil, its biochemical
properties and the counts of microorganisms were scrutinized with the following indices:
RS – soil resistance, R:S – rhizosphere effect and EF – fertilization effect of the contamination
alleviating substances. It was found that alkaline phosphatase is more sensitive to cadmium
contamination of the soil than acid phosphatase. Cadmium did not exert any inhibitory effect on
the number of microorganisms present or the yield of spring barley. Cellulolytic bacteria were
the least sensitive to stress associated with the accumulation of high cadmium doses in the soil,
whereas copiotrophic bacteria were the most sensitive microorganisms to the above stressor. The
ability of cadmium-polluted soil to restore homeostasis depended on the type of a soil improver
and the level of soil contamination. Negative consequences of cadmium pollution were effectively
mitigated by straw, but less so by brown algal extract and basalt flour.
Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies
Informacja
SZANOWNI CZYTELNICY!
UPRZEJMIE INFORMUJEMY, ŻE BIBLIOTEKA FUNKCJONUJE W NASTĘPUJĄCYCH GODZINACH:
Wypożyczalnia i Czytelnia Główna: poniedziałek – piątek od 9.00 do 19.00