Plant, Soil and Environment, 2008 (vol. 54), issue 12
Index 2008
editors
Plant Soil Environ., 2008, 54(12):I-V | DOI: 10.17221/430-PSE 
Impact of soil compaction heterogeneity and moisture on maize (Zea mays L.) root and shoot development
B. Konôpka, L. Pagès, C. Doussan
Plant Soil Environ., 2008, 54(12):509-519 | DOI: 10.17221/429-PSE
Soil compaction heterogeneity and water content are supposed to be decisive factors influencing plant growth. Our experiment focused on simulation of two soil moisture levels (0.16 and 0.19 g/g) plus two levels of clod proportion (30 and 60% volume) and their effects on root and leaf variables of maize (Zea mays L.). We studied number of primary and lateral roots as well as primary root length at the particular soil depths. Statistical tests showed that the decrease rate of the number of roots versus depth was significantly affected by the two studied factors (P < 0.01). Soil moisture and clod occurrence, interactively, affected leaf...
Changes in culturable bacterial community of soil treated with high dosages of Cu or C
Z. Piotrowska-Seget, J. Kozdrój
Plant Soil Environ., 2008, 54(12):520-528 | DOI: 10.17221/428-PSE
Culturable bacteria numbers, kinetics of colony formation, community structure analyses in terms of ecological (r/K-strategists) and cytochemical approaches were used to assess the bacteria responses to soil treatment with high concentrations of Cu or Cd over time. The soil treatment resulted in high concentrations of water-soluble forms of the metals. Bacterial numbers significantly decreased in the metal-treated soil shortly after the soil contamination, their numbers however increased during incubation time. The short- or long-term contact of bacteria with the metals significantly decreased or increased the rate of cell proliferations, respectively....
Antioxidative protection in wheat varieties under severe recoverable drought at seedling stag
L. Simova-Stoilova, K. Demirevska, T. Petrova, N. Tsenov, U. Feller
Plant Soil Environ., 2008, 54(12):529-536 | DOI: 10.17221/427-PSE
The antioxidative protection in leaves of four winter wheat (Triticum aestivum L.) varieties with different field drought resistance was studied under severe recoverable soil drought at seedling stage by withholding irrigation for 7 days (57-59% leaf water deficit) followed by rewatering. A 3-fold raise in electrolyte leakage and a sharp increase in proline accumulation corresponded to drought severity. Hydrogen peroxide content and catalase (CAT) activity were maintained low under stress. Peroxidase (GPX) activity increased, whereas superoxide dismutase (SOD) activity only slightly changed. The content of ascorbate and low-molecular thiols...
Interactive effect of salinity and two nitrogen fertilizers on growth and composition of sorghum
E. Esmaili, S.A. Kapourchal, M.J. Malakouti, M. Homaee
Plant Soil Environ., 2008, 54(12):537-546 | DOI: 10.17221/425-PSE
The objective of this study was to investigate the interactive effects of salinity and different sources of applied N on growth, yield and nutrient composition of sorghum. The salinity treatments C0, C1, C2, C3 and C4 corresponded to 0.6, 6, 8, 10 and 12 dS/m, respectively. Eight fertilization treatments combined urea and ammonium nitrate sources. The height, fresh weight, dry weight, leaf area, N, K, Ca, Mg, Na and Cl contents of treated plants were measured after harvesting. Results indicate that both emergence and growth were significantly decreased by increasing salinity. The plant response...
Information and communication technologies and multifunctional agri-food systems in the Czech Republic
P. Šimek, J. Vaněk, J. Jarolímek
Plant Soil Environ., 2008, 54(12):547-551 | DOI: 10.17221/426-PSE
At present, one of the main measures in the evaluation of information society development is, first of all, a stage of communication infrastructure, which is an essential base for its functioning. The paper gives information on the results of a broad survey of information and communication technologies (ICT) development in companies of agricultural production within the whole Czech Republic (CR), which was carried out in the first quarter of 2008. The aim of the survey is to analyse the stage of Internet connectivity development in rural regions, where an absolute majority of business operators acts, as well as to find out the stage and current trends...