Plant, Soil and Environment, 2008 (vol. 54), issue 11
The changes of soil nitrogen and carbon contents in a long-term field experiment under different systems of nitrogen fertilization
V. Nedvěd, J. Balík, J. Černý, M. Kulhánek, M. Balíková
Plant Soil Environ., 2008, 54(11):463-470 | DOI: 10.17221/435-PSE 
Content of N and C in soil were investigated in a long-term field experiment under different systems of N fertilization. Chernozem and Cambisol were extracted using hot water (Nhws, Chws) and 0.01M CaCl2 (NCaCl2, CDOC). The Ct/Nt ratio in Chernozem was 9.6:1 and in Cambisol 6.1:1. The lowest Ct/Nt ratio in both experiments was found in the control treatment. Results showed that C and N compounds are less stable in Cambisol, which leads to a higher rate of mineralization. In the Chernozem, Nhws formed 3.66% from the total N content in the soil...
Response of the Czech hybrid hop cultivar Agnus to the term of pruning, depth of pruning and number of trained bines
J. Křivánek, J. Pulkrábek, R. Chaloupský, T. Kudrna, J. Pokorný
Plant Soil Environ., 2008, 54(11):471-478 | DOI: 10.17221/432-PSE
Agnus is a Czech hybrid hop cultivar and a statistically significant influence of depth and term of pruning on harvested hop cones yield and on alpha-bitter acids content in hop cones were found in this study. Evaluated agrotechnical measures, i.e. depth of pruning, term of pruning and number of trained bines, considerably influenced performance and quality of newly grown hop genotype. Every year, we found a positive influence of shallow pruning on yield (increase of dry hop cones yield in 2003 by 0.37 t/ha, in 2004 by 0.28 t/ha and in 2005 by 0.02 t/ha). The hop yield of plants treated with shallow pruning increased on average by 11.6% in three years....
Effects of road deicing salts on soil microorganisms
J. Černohlávková, J. Hofman, T. Bartoš, M. Sáňka, P. Anděl
Plant Soil Environ., 2008, 54(11):479-485 | DOI: 10.17221/431-PSE
In this study, the effects of road salting on the quality of forest soils near the road were monitored in the Krkonoše Mountains (Czech Republic). Physical, chemical properties and microbial parameters of soils were determined and the toxic potentials of soil water extracts were evaluated using the bacterial tests (Microtox and Pseudomonas putida growth inhibition test). Increased concentrations of Na+ ions (up to 100 mg/kg) and pH values up to 8 were found closer to the road. Microbial biomass and respiration activity were significantly reduced at the roadside (ANOVA; P < 0.05), and the metabolic quotients showed that the...
Biogeochemical effect of karst soil on the element contents in the leaves of two species of Flos Lonicerae
Q. Li, J. Cao, L. Yu
Plant Soil Environ., 2008, 54(11):486-492 | DOI: 10.17221/433-PSE
In order to study the characteristics of element values in the cell of plants and soils and their relationships that would help to evaluate the biogeochemical effect of soil on the element contents in the cells of plants in the same environment of Southwestern China, the soil samples were collected for analysis and the weight and atom percentage of elements (WT% and AT%) in the leaves of two different species of Flos Lonicerae were analyzed by the electron probe (EDX-9100). The results of soil analysis show that the nutrient element contents in the soil are determined by the liable content of elements, which were arranged as: Ca > Mg >...
Kinetics of the antioxidant response to salinity in the halophyte Limonium bicolour
Y. Li
Plant Soil Environ., 2008, 54(11):493-497 | DOI: 10.17221/434-PSE
The fresh weight (fw) and dry weight (dw) of shoots and roots, the activity of anti-oxidant enzymes [superoxide dismutase (SOD), peroxidase (POD), catalase (CAT)], and parameters of oxidative stress of shoots - malondialdehyde (MDA) - were investigated in Limonium bicolor, a naturally salt-resistant halophyte. The seedlings of L. bicolour were treated with different (0, 100, 200, 400 mmol/l) NaCl concentrations. The results showed that NaCl played an important role in growth of L. bicolour. It made obviously promotion of a certain NaCl concentration to growth of L. bicolor, the seedlings of L. bicolour grew best under...
Rhizobia associated with neotropical tree Centrolobium tomentosum used in riparian restoration
M.C. Pagano
Plant Soil Environ., 2008, 54(11):498-508 | DOI: 10.17221/436-PSE
Centrolobium tomentosum is a tropical legume tree indicated for functional and structural restoration of riparian areas. This study was conducted to characterize the rhizobia isolated from nodules of C. tomentosum in situ and to determine their capacity of renodulation, in an experimental area of land rehabilitation in the Rio Doce valley. Nodulation potential to inoculation with 2 selected fast-growing Rhizobium strains separately and a mixed inoculum of arbuscular mycorrhizal fungi was evaluated by the use of antibiotics resistance. Flood disturbance were observed not to affect renodulation by fast-growing strains. DNA fingerprinting...