The influence of mineral and organic - mineral fertilisation on the Hayfield vegetation from Banat (Romania) hill region

In this study the objective was to determine the effects of mineral and organic – mineral fertilizers on the vegetation cover of a hayfield from the hill area of western Romania, respectively Fibiş (Timiş County). The average of the annual air temperature in this region is 10.7 oC and the average of the annual rainfall amount is 608 mm. The climate in the studied area is temperate continental with Mediterranean influences. The experimental field was organized by setting 6 fertilisation variants (3 mineral and 3 organic – mineral fertilisation variants) and a control non-fertilised variant. Every studied variant had three replicates. The vegetation data were collected using the linear point quadrate method, thus calculating several vegetation features. The vegetation features taken in account were: the botanical composition, the biodiversity (species richness, Shannon and Simpson indexes), some ecological indexes (temperature, humidity, soil reaction and light). The fertilisation influenced mainly the biodiversity and the light and soil reaction ecological spectre

The effect of ash from thermal power station on the heavy metal content of Festuca arundinacea and Festuca pratensis

Due to its biological activities, adsorption and absorption properties, the soil can function as a cleaning system for many industrial pollutants in moderate concentrations. Because of the microelement content of ash, it can be used for improvement of acid soils or with microelement deficit. The present paper describes the possibilities of using thermal power station ash as amendment and source of microelements for two gramineous species, used as forage and energetic plants. For the experiment design we used randomized blocks with 3 repetitions. The ash was incorporated in soil before sowing of Festuca arundinacea and Festuca pratensis species. Experimental variants were the following: V0 – 0 t/ha non-treated control, V1 – 1 t/ha, V2 – 3 t/ha and V3 – 5 t/ha ash. Plant samples were collected from the above-ground organs, one year after sowing. Heavy metal content was determined using atomic absorption spectroscopy method. Regarding the metal content, the data show that the application of ashes in different dosages had similar effects on both of the gramineous species. The zinc content decreases slightly with the increase of ash dosage at both of the species. Compared to control variant, the copper content increases directly with the amount of applied ash at Festuca arundinacea and decreases at Festuca pratensis. Cobalt, nickel and manganese concentrations presented an increase due to higher ash concentrations at both of the plant species compared to control. From all of the assessed metal contents, manganese presented the highest concentrations in plants. The concentrations are low compared to non-treated control, thus there was no toxicity effect of the studied heavy metals from thermal power station ashes

The influence of mineral and organic - mineral fertilisation on the Hayfield vegetation from Banat (Romania) hill region

In this study the objective was to determine the effects of mineral and organic – mineral fertilizers on the vegetation cover of a hayfield from the hill area of western Romania, respectively Fibiş (Timiş County). The average of the annual air temperature in this region is 10.7 oC and the average of the annual rainfall amount is 608 mm. The climate in the studied area is temperate continental with Mediterranean influences. The experimental field was organized by setting 6 fertilisation variants (3 mineral and 3 organic – mineral fertilisation variants) and a control non-fertilised variant. Every studied variant had three replicates. The vegetation data were collected using the linear point quadrate method, thus calculating several vegetation features. The vegetation features taken in account were: the botanical composition, the biodiversity (species richness, Shannon and Simpson indexes), some ecological indexes (temperature, humidity, soil reaction and light). The fertilisation influenced mainly the biodiversity and the light and soil reaction ecological spectre

The effect of ash from thermal power station on the heavy metal content of Festuca arundinacea and Festuca pratensis

Due to its biological activities, adsorption and absorption properties, the soil can function as a cleaning system for many industrial pollutants in moderate concentrations. Because of the microelement content of ash, it can be used for improvement of acid soils or with microelement deficit. The present paper describes the possibilities of using thermal power station ash as amendment and source of microelements for two gramineous species, used as forage and energetic plants. For the experiment design we used randomized blocks with 3 repetitions. The ash was incorporated in soil before sowing of Festuca arundinacea and Festuca pratensis species. Experimental variants were the following: V0 – 0 t/ha non-treated control, V1 – 1 t/ha, V2 – 3 t/ha and V3 – 5 t/ha ash. Plant samples were collected from the above-ground organs, one year after sowing. Heavy metal content was determined using atomic absorption spectroscopy method. Regarding the metal content, the data show that the application of ashes in different dosages had similar effects on both of the gramineous species. The zinc content decreases slightly with the increase of ash dosage at both of the species. Compared to control variant, the copper content increases directly with the amount of applied ash at Festuca arundinacea and decreases at Festuca pratensis. Cobalt, nickel and manganese concentrations presented an increase due to higher ash concentrations at both of the plant species compared to control. From all of the assessed metal contents, manganese presented the highest concentrations in plants. The concentrations are low compared to non-treated control, thus there was no toxicity effect of the studied heavy metals from thermal power station ashes