Plant, Soil and Environment, 2003 (vol. 49), issue 9
Content of PCB substances in carrot root and its relations to selected soil factors
I. Danielovič, Š. Tóth, A. Marcinčinová, V. Šnábel
Plant Soil Environ., 2003, 49(9):387-393 | DOI: 10.17221/4141-PSE 
The influence of the content of polychlorinated biphenyls (PCB) in agricultural soil and its agrochemical properties on bioaccumulation of PCBs by edible part of carrot (Daucus carota L.) was monitored in 18 locations of the Eastern Slovakian lowland (ESL). The congeners Nos. 28, 52, 101, 138, 153 and 180 have been determined in almost all samples and in both soil and plant material. Soil PCB values varied between 0.16 µg/kg, detected in the congener 52, and 53.4 µg/kg for the congener 180. The average value of the sum of all the followed congeners was 17.9 µg/kg. The variation interval of investigated PCB congeners in carrot...
Phosphorus availability in hydromorphic soils of Eastern Croatia
D. Petosić, V. Kovacević, M. Josipović
Plant Soil Environ., 2003, 49(9):394-401 | DOI: 10.17221/4143-PSE
The phosphorus (P) availability was tested on hydromorphic soils located in theSavavalley. 480 soil profiles covering the area of31 227 hawas analysed in our study. The plant available P was determined by the Ammonium-Lactate method. The P availability in the surface layer (0-30 cm) is very low (up to 5 mg P2O5/100 g of soil) in about 30% of the tested agricultural land (9 440 ha), next 32% (9 897 ha) is in the range of a low P availability (from 5.1 to 10 mg), while only 17% (5 445 ha) has a good or very good P availability (above 20 mg). Especially high frequency of low P availability was found in vertic gley, amphygley and hypogley soils (total8...
Biomass yields of shoots and roots of plants cultivated in soil amended by vermicomposts based on tannery sludge and content of heavy metals in plant tissues
K. Gondek, B. Filipek-Mazur
Plant Soil Environ., 2003, 49(9):402-409 | DOI: 10.17221/4144-PSE
Sewage sludge application in agriculture is the simplest method of its management. Its content of organic and inorganic toxic components is a barrier to such management. Particular attention should be paid to the content of heavy metals whose presence in sewage sludge and later in soil poses hazard for plants, animals and people. The investigations aimed to determine the effect of vermicomposts obtained from tannery sludge on development of the root system and biomass of shoots as well as heavy metal concentrations in these organs. In the first year after the vermicomposts application their effect on the maize biomass increase was equal to the farmyard...
Evaluation of frost resistance in varieties of common buckwheat (Fagopyrum esculentum Moench)
J. Kalinová, J. Moudrý
Plant Soil Environ., 2003, 49(9):410-413 | DOI: 10.17221/4145-PSE
The aim of this study was to determine the most sensitive growth stage of common buckwheat to frost temperatures and evaluate differences in frost resistance among varieties. A modified field-laboratory method was utilised for the study on four varieties of common buckwheat. The lethal temperature (LT50) was determined for all variants. The critical time of frost action (Lt50) was determined for the lethal temperature and for the most sensitive growth stage. Buckwheat is most sensitive to frost temperature from the stage of primary leaves to the stage of two secondary leaves. Differences among the growth stages developed with plant hardening during...
Effects of tillage and reduced herbicide doses on weed biomass production in winter and spring cereals
M. Knežević, M. Đurkić, I. Knežević, O. Antonić, S. Jelaska
Plant Soil Environ., 2003, 49(9):414-421 | DOI: 10.17221/4146-PSE
The effects of different tillage systems and dose reduction on the efficacy of triasulfuron & chlortoluron mixture in the post-emergence control of annual broad-leaved weeds in winter wheat and spring barley were studied on lessive pseudogley soil in north-eastern Croatiaduring 1997-2000. Total dry biomass production in untreated plots was significantly influenced by tillage and it was lowest in continuous mouldboard ploughing (99 kg/ha), medium and similar in mouldboard ploughing/disk harrowing alternating every second year and in chisel ploughing (218 kg/ha) whereas the biomass was highest in continuous disk harrowing (422 kg/ha). Thereby the...
The effect of plant population densities on growth, yield and yield components of two spring rapeseed cultivars
H. Ozer
Plant Soil Environ., 2003, 49(9):422-426 | DOI: 10.17221/4151-PSE
Rapeseed (Brassica napus L.) is an important alternate oilseed crop in eastern Anatolia, Turkey. No information on plant density for rapeseed is available in this region. Therefore a study was initiated to investigate the effects of spacings between rows and spacings within rows on the yield and agronomic characteristics of two genotypes of spring rapeseed (Tower and Lirawell) in Erzurum, eastern Anatolia, during 1994 and 1995. The effects of spacings between or within rows on the yield and yield components of Tower and Lirawell, two cultivars of Brassica napus L., were studied for 2 years inErzurum,Turkey. Rows were spaced at 15,...
PCR markers of apple resistance to scab (Venturia inaequalis CKE.) controlled by Vf gene in Czech apple breeding
P. Vejl, S. Skupinová, J. Blažek, P. Sedlák, M. Bardová, H. Drahošová, H. Blažková, Z. Milec
Plant Soil Environ., 2003, 49(9):427-432 | DOI: 10.17221/4147-PSE