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The regional GDP is used in the European Union as the important indicator to the distribution of the European funds. However in the Czech Republic this indicator has had only a short history because regional GDP started to be constructed in the half of the ninetieth. The aims of the paper are to present and evaluate the progress in the process of the regionalization of the GDP in the Czech Republic, review economic productivity of the Czech regions (level NUTS 2 and NUTS 3) and finally point out the persisting weaknesses of the regionalization of the GDP in the Czech Republic. First part of the paper describes problematic beginnings of the process of the regionalization of the GDP, evaluates changes of the methodology and discusses the actual state of this affair. Second part of the paper describes the variability of GDP among the Czech regions at level NUTS 2 and NUTS 3. Alternative modifications of the indicator GDP (for example GDP, GDP per capita, rate of growth) are used in this regional analysis. Consecutively relative positions of individual regions in the Czech Republic are discussed. There are pointed out some contradictions in the Czech regional statistics in this paper. The defined drawbacks indicate possible way of the research into the future.

Two methods for estimating daily global solar radiation (R_G) based on the daily temperature extremes and precipitation sum are compared in the study. All parameters necessary for application of both methods were derived either from literature or from climatic characteristics easily available at the given meteorological stations excluding need for measured R_G data. The performance of both methods was assessed with a help of meteorological database including 4 stations in the Czech Republic (data were provided by the Czech Hydrometeorological Institute) and 6 in Austria (data provided by the Austrian Weather Service) containing in total 41 640 observational day. For each day in the database observed daily sum of R_G, daily maximum and minimum temperatures and precipitation sum were available. Coefficient of determination, slope of regression line forced through origin, mean bias error (MBE) and root mean square error (RMSE) were used as performance indicators. The first method proposed by Winslow et al. (2001) - Eq. (1) is capable to explain 86% of daily R_G variability, with systematic error represented by MBE equaling to 0.19 MJ.m^-2.day^-1 and random error indicated by RMSE reaching up to 3.09. The second method published by Thornton and Running (1999)-Eq. (2) was found to be in almost all parameters inferior to the Eq. (1) and thus the Eq. (1) is recommended to be used in the Central European region (up to 600 m above the sea level). This method might be recommended for stations where neither measured R_G or sunshine duration hours exist. However, one should take into consideration that relative MBE and RMSE are in some months higher than 10% and 30% respectively, which may compromise results of subsequent calculations made with use of estimated solar radiation data and alter the order of the method suitability.

The paper evaluates seven years (1993-1999) of Soil organic matter supply monitoring in multifactor field trials conducted by the Agricultural Research Institute in Kroměříž, Czech Republic, (mean annual temperature 8.9 °C, total annual precipitation 599 mm, medium Luvi-Haplic Chernozem). The studied plots were a part of nine-crop rotation: alfalfa the 1^st and 2^nd year, winter wheat, spring barley, sugar beet, spring barley, winter wheat, silage maize and spring barley. The Soil organic matter supply was measured on four plots: winter wheat after spring barley (var. 1), winter wheat after alfalfa (var. 2), spring barley after winter wheat (var. 3) and spring barley after sugar beet (var. 4). Soil samples were taken from April to July (14-day period) from topsoil (0-30 cm) and subsoil (30-60 cm). The content of Soil organic matter was determined by wet oxidation. Using bulk density, the C content (%) was converted to C supply (t.ha^-1). Average yield (t.ha^-1) reached 6.54 t/ha (var. 1), 7.47 t/ha (var. 2), 6.52 t/ha (var. 3) and 7.20 t/ha (var. 4). Evaluation of the results was carried out by the analysis of variance and time changes by the second-degree regression analysis. Results demonstrated that Soil organic matter supplies were significantly changed in topsoil. The highest supplies were found in barley after sugar beet (118 t.ha^-1), the lowest ones in wheat after alfalfa (111 t.ha^-1). As for the cereal species generally, it was documented that in topsoils under barley the supplies were higher than under winter wheat. In subsoil, there were significant differences between wheat after alfalfa (111 t.ha^-1) and barley after wheat (104 t.ha^-1). As for a difference in the Soil organic matter supply in subsoil according to the cereal species the situation was contrary than in topsoil. Higher supplies were under wheat. Generally (topsoil and subsoil), the highest supply of Soil organic matter was in barley after sugar beet (224 t.ha^-1) and similarly in wheat after alfalfa (222 t.ha^-1). The smallest supply was in the variant of wheat after barley (217 t.ha^-1). In topsoil, the average supply of humus was 114 t.ha^-1 and that in subsoil was 107 t.ha^-1 the difference being statistically significant.

The effect of the χ-casein (C-CSN) and β -casein (B-CSN) loci on the milk production traits (milk yield, fat, protein and lactose content) was estimated for 807 and 488 Czech Fleckvieh and 402 and 244 Holstein cows, respectively. Genotypes of C-CNS and B-CNS were determined by the use of PCR-RFLP method. The genotypes were detected by use of electrophoresis on agarose gel. The associations of studied polymorphisms with milk production traits were estimated using the mixed linear model procedure REML in SAS for Windows 9.1.3. Results indicated that protein content is significantly affected (P ≤ 0.01) by C-CSN genotype (genotype BB > AB > AA). Fat and lactose content were not affected by C-CSN locus. The B-CNS locus had no significant effect on any milk production traits.

The paper works at fertilization influence and weather conditions on the stand composition of Sanguisorba-Festucetum comutatae association. Paper evaluations the economic efficiency of NPK fertilization too. The monitor grass stand is situated in the Bohemian-Moravian Highlands at an altitude 553 m a.s.l. Non-fertilization grass stand, grass stand fertilization with PK, grass stand fertilization with 90 kg ha^-1 N+PK, grass stand fertilization with 180 kg ha^-1 N+PK were compared. Proportion of component arts and agro botanic categories in the take away fodder were monitored. In the paper are evaluated years 2003-2005. Precipitation subnormal (661 mm) was year 2003. Supernormal precipitations (852 mm, respectively 861 mm) were years 2004 and 2005. The grass proportion was by all fertilization variants higher in the years 2004 and 2005. The herb proportion was higher in the year 2003. The grasses dominated most of all by the fertilization grass stand with 180 kg ha^-1 N + PK, especially Alopecurus pratensis L. By the non-fertilization grass stand dominated Festuca rubra L. Its proportion was by the non-fertilization grass stand significant (P

The effect of N and P fertilization on the dry matter content, concentration of nutrients (N, P, K, Ca and Mg) and their intake by the plant, production characteristics (achene yields, head diameter, 1000-seed weight, oil content and oil production) and the content of fatty acids (palmitic, stearic, palmitooleic, oleic, linoleic and linolenic) was evaluated in the one-year pot trial with sunflower (Helianthus annuus, L.). Nitrogen application had a positive effect on dry matter production and increased N intake by plants as early as the beginning of vegetation (4^th true leaf). The effect of P on dry matter production was not markedly evident until the later growth stage (10^th true leaf). At the end of the vegetation period the weight of plants of variants fertilised with N only and variants where P was applied evened out. Achene yields, head diameters, 1000-seed weight, oil content and oil production increased statistically significantly after N application. Of all the monitored characteristics the increased level of P in the soil affected only the 1000-seed weight. The application of both nutrients did not significantly change the content of fatty acids.

The paper deals with the study of the production capacity of biomass in the seven-year stand of Salix alba L. The communities originated in the process of primary succession in the area of the middle Nové Mlýny reservoir on a newly established island. Already since the first stages, the communities have been monitored. Results have shown that white willow behaves as an R-strategist with fast growth in youth. Moreover, the growth is supported by optimum environmental conditions (soils richly supplied with nutrients and water, long growing season). Accumulated phytomass amounted 102,7 t.ha^-1 at the age of 7 years and the yield reached a mean annual increment of 15 t.ha^-1.year^-1. Communities of white willow rank among highly productive phytocoenoses capable of fixing considerable amounts of carbon and, at the same time fulfilling the function of habitat corridors.

The leptin (LEP-HinfI), leptin receptor (LEPR-HpaII) and heart fatty acid binding protein (H-FABP-HinfI) genes and their genotypes combination (LEP-HinfI *LEPR-HpaII) were tested for associations with the pH₁, pH₂₄, myoglobin content (mg/100 g), intramuscular fat content (%) and remission (%). The genotypes were determined in Large White, Landrace and Duroc breeds (n = 106, 56 and 4, respectively). The allele frequencies were: LEP-HinfI: C = 0.133 T = 0.867; LEPR-HpaII: A = 0.331 B = 0.669; H-FABP-HinfI: H = 0.745 h = 0.255. The populations of breeds were in the genetic equilibrium according to the χ² test in the tested loci. The combinations of LEP-HinfI and LEPR-HpaII were significantly associated with the pH₂₄ and remission. The H-FABP-HinfI locus was significantly associated with intramuscular fat content.

The results of the previous studies have suggested that the estimated R_G values are loaded with an error, which might compromise the precision of the subsequent crop model applications. Therefore a detailed analysis of the error propagation was made using two crop models i.e. CERES-Barley and CERES-Wheat. Database of meteorological data originating from 8 stations in Austria and Czech Republic was used in order to carry out the analysis. It has been found that even application of the method based on sunshine duration that yield the lowest bias in R_G estimates significantly influences number of key crop model outputs. It has been also noted that in 5-6 seasons out of 100 cases the deviation greater than ±10 % is to be expected whilst the occurrence of ±25% could not be also ruled out. The precision of the yield estimates and other crop model outputs is lower then expected but still acceptable for most application with mean bias error in range of 2.0-4.1% when estimates based on the diurnal temperature range and cloud cover are used. In this case yield deviations over ±10% occurred in about 20% cases (depending on the crop) whilst the probability of significant yield departure (±25%) doubled of that found for the previous method. The methods based on the diurnal temperature range and daily precipitation sum showed an increase of the systematic bias of yield of winter wheat and considerably higher number of seasons with yield departures over ±25%. Utilisation of the methods based on the diurnal temperature range only for the purposes of seasonal yield forecasting or climate change impact assessment is questionable as the probability of significant yield departure is very high (as well as the systematic error). These findings should act as an incentive to the further research aimed at development of more precise and widely applicable methods of estimating daily R_G based more on the underlying physical principles and/or remote sensing approach. Overall decrease of the existing uncertainties in the R_G estimates would clearly result into increase of the reliability of subsequent applications that use R_G as input variable.

The paper deals with evaluation of attractiveness of apple production in the Czech Republic using the Industry attractiveness evaluation matrix according to the methodology of Higgins and Vincze (1989). It identifies the key criteria for evaluation of attractiveness from five fields: market factors, competition factors, financial and economic factors, technological factors, and socio-political factors. The key criteria are described in detail and evaluated from the viewpoint of a producer operating in the apple production industry. The text comes from the papers from the field of fruit production and apple production published by Kudová (2003, 2004, 2005) and Chládková (2003). Application of these methods on other industries was applied by Žufan et al. (2001) and Tomšík, and Žufan (2004).
According to the data of the Division of Perennial Plants of the Central Institutte for Supervising and Testing in Agriculture (CISTA), the number of subjects (firms and growers) operating intensive orchards reaches 1 238 on the area of 18 998 ha. In 2003 the number of subjects was 1 243 on the area of 19 514 ha. The total sales in fruit production were in decline from 1999 to 2005, and the decline of sales of apples grown in intensive orchards in 2005 was 34% in comparison with 2004. In the foreign trade, there significantly prevail imports above exports, and from 2002 to 2004 the imports of apples grew by 220%. The biggest growth of area of orchards was in 2004 - by 211 ha of mature apple-trees, which amounts only for 2% of the total area. In connection with this growth, there grew also the yield. Diversity of the market is based on varietal structure of apple-trees grown. According to the data of CISTA, the current varietal structure is not suitable and its change is very slow. Most of apples are grown in Central Bohemia, which amounts for 11% of the total area, which is more than 2000 ha. We can conclude, that even though the average market price of agricultural land is quite high - 25.76 CZK.m^-2, the lands for agricultural use for market production with the area of more than 5 ha have the average price of 5.04 CZK.m^-2, which is the country average of the price of agricultural land according to the value index (BPEJ).
The costs of establishing an apple-tree orchard amount for CZK 409,000 to CZK 653,000 per hectare - depending on the number of trees per hectare. The average costs of attending an apple-tree orchard are CZK 75.226 per hectare (average for the period of 1998-2003).
Profits in this industry are based on selling the harvest through growers-organization or to a cannery, or by storing the fruits in own warehouses (only those with a controlled atmosphere are competitive).
Fruit consumption in the Czech Republic is slightly increasing from 1990, and till 2005 it grew by 12.1 kg per person per year (by 18.8%) to the current 76.5 kg per person per year. Apples have an important share on the total fruit consumption, and their consumption grows, as well. The increase in the period of 1990─2005 was 65%. European Union, and the Ministry of Agriculture of the Czech Republic through the State Agricultural Intervention Fund (SZIF) introduce a spectrum of support programmes, in which it is possible to apply for financial support. But it is necessa

The aim of this contribution is to be able to used triticale in distilling industry. Four triticale varieties were grown during 2003-2005. Trials were situated in four different locations of the Czech Republic - Staňkov, Hradec nad Svitavou Krásné údolí and Libějovice. There were used varieties Kolor, Presto, Modus and Disko. The alcoholic yield, protein content and starch content were determined. The technical enzymes Termamyl SC and SAN Extra L. were used into laboratory fermenting tests for saccharification starch. Reached alcoholic yields move between 37-46 la. The highest alcoholic yield (average three years and four locations) was estimated by variety Modus (41.19 la/100 kg. in dry matter), the lowest variety Kolor (40.08 la/100 kg in dry matter). The location Hradec n/Svitavou (41.68 la) and Krásné Údolí were favourable, the year 2005 (41.48 la) was the most positive.
The highest starch content is into positive correlation with alcoholic yield (r = 0.396) and negative with protein content (r = -0.327). The results were pointed out that triticale makes it suitable for in the distilling industry.

The results of three-year trials (1999 to 2001) conducted with six winter wheat varieties in which was studied the grain yield and parameters of technological quality. Varieties of wheat come from four different localities of the Czech Republic. The most favourable weather conditions, a lot of precipitation and high temperature in the course of ripening from three years were proved in the year 2000. The best grain yield were in 2001 (average of sites 8.84 t/ha) and variety Semper, worst quality, had the highest grain yield of 9.17 t/ha, the least grain yield had Sulamit, best quality (7.94 t/ha). The laboratory analysis revealed negative correlation between grain yield and baking quality. The number of statistically highly significant correlations among bread-making quality parameters too.
The negative correlation was of grain yield and grain volume mass (P < 0.05), Zeleny test and protein content taken as a whole for three years (P < 0.01).
The correlation of loaf volume, which is the traits of baking quality and Zeleny test (r = 0.6016**), protein content (r = 0.5932**), dough stability (r = 0.2898**) and flour water absorption (r = 0.3632**) was positive (P < 0.01).

The work was carried out to study the influence of additional sowing and differentiated systems of use in the summer period on the production of grass sward in the autumn and winter period. An additional sowing of Festuca arundinacea and Festulolium was made into the grass stand with dominating Festuca rubra, Taraxacum officinale, Agropyron repens, Dactylis glomerata, Trisetum flavescens, Agrostis stolonifera and Phleum pratense. In summer (preparatory cut), the grass stand was utilized in June, July and August. In the autumn (main use), it was utilized in November, December and January. The additional sowing, the preparatory cut and the main use were monitored for their influence on the yield of dry matter. Another assessment was made of the share of Festuca arundinacea and Festulolium in the harvested herbage. In June 2001, the share of additionally sown herb species in the harvested herbage did not exceed 2%. However, their proportion increased to more than 20% in four years of the study. In the summer period, the additional sowing did not show any significant effect on dry matter yields. The additionally sown herb species exhibited a pronounced dominance in November. The shares of Festuca arundinacea and Festulolium in the harvested herbage were 80.1% and 71.3%, respectively. Yields from the additionally sown grass stands were higher from the third year of the study (by 1.07-1.26 t.ha^-1) than those from the grass stand with no additional sowing (0.66-0.97 t.ha^-1) the variance being insignificant. In the autumn and in winter, a significant decrease (P < 0.05) was seen in yields from the grass stand utilized until the beginning of August and the yields further decreased with the proceeding winter.

Results of the statistical analysis of the of the total economic aggregate account for the Czech Republic enabled, in addition to the quantification of its performance, also to asses the developmental tendencies of economic phenomena under study. From this point of view, the most important were the data obtained within the framework of studies on the total output of Czech agricultural industry. Among the major indicators of the production intensity, the level of intermediate consumption was explored as well. This analysis involved also an exact estimation of both gross and net added value because such an analysis enables to express the the final economic effect of agriculture within the framework of the national economy as a whole. A complex approach to the solution of these problems is presented on the base of studies on the structure of both plant and animal production and of the total intermediate consumption

Long term stationary field experiments with continuous spring barley were conducted in the maize-growing region on heavy gleic fluvisol from 1974 to 2002. Two variants of straw management (straw harvested and incorporated into soil), two variants of soil tillage (conventional plough tillage to 0.22 m, shallow disc tillage to 0.12-0.15 m) and three variants of fertilization (30, 60 and 90 kg. N ha^-1) were studied. The results of organic matter balance in the examinated period according to particular methods were related to trends of real humus content which is presented in C_ox in particular experiment variants. The examinated method by LEITHOLD et al. (1997), used in model Repro, answers most accurate in given conditions according to hypothesys defined in scientific literature. On the base of this result we can confirm significancy of the result. Other verification of method is appropriate for its using in real conditions in context of agricultural sustainability assesment.

The objective of the present study was to evaluate the effect of a relatively more frequent occurrence of lower coefficients of inbreeding in a population of Holstein cattle on the exterior characters. The exterior of inbred cows (on the level of F_x = 1.56 - 4.00%) was compared with their outbreed contemporaries, i.e. half-sisters from the same father. Evaluations of the exterior of both inbred cows and contemporaries were conducted on the same day, 60-180 days after the first calving, in the same barn and using the valid mode of operation "Linear description and evaluation of the exterior of Holstein cattle". The group consisted of 212 inbred cows and 521 contemporaries. This monitoring is part of a more extensive study dealing with the effect of low levels of F_x coefficients on the characters of milk performance. On that score, the evaluations primarily include characters that are associated with milk production.
The group of inbred cows was compared with their contemporaries and the increased variability of all the evaluated characters (V_x) was studied. The increased variability was particularly due to the wider variance of characters and/or due to the more frequent occurrence of the characters, in inbred animals including both biological extremes (maximum and minimum).
Compared to the contemporaries the average values of exterior characters of inbred animals were lower. The most marked decrease in the values was detected for the fore udder attachment (0.28 points, i.e. 5.5 %) and for the total evaluation of the legs (-0.80 points, i.e. a 1.04% decrease). Although the worsening of the exterior of inbred animals involved all the characters under study, compared to the outbreed contemporaries the differences on the studied level of F_x were not statistically significant.

A community of weeds and crops is affected by a number of factors, including, among other things, also tillage. In the years 2000-2002, the composition of weed species in rape stands was evaluated on the fields with the total area of 551 hectares (1 hectar equals to some 2.47 acres). The evaluation was carried out with the application of methodology developed by Kühn (1982). On the fields located in the cadastral area of Olomouc - Holice, which had been cultivated in a traditional manner, 115 relevés were recorded. On the fields in the cadastral area of Bohuňovice, which had been cultivated with the application of reduced tillage, 97 relevés were recorded and evaluated. All of the above fields were subjected to the application of chemical agents reducing the occurrence of weeds. The data thus received were processed by means of multidimensional analysis of ecological data with the application of a RDA method (Redundancy Analysis). In the course of three years, 75 weed species were found on the fields under conventional tillage, on the average, 8.2 species per a relevé, while 66 weed species were found during the same period of time on the fields cultivated by means of reduced tillage, on the average, 8.6 species per a relevé. The application of RDA analysis enabled us to sort out the selected species of weeds (i.e. those the frequency of occurrence of which exceeded 15 %) into three groups. The conditions provided by the conventional tillage appeared to be more satisfactory for the weed species included in the first group (Arctium tomentosum, Elytrigia repens, Helianthus tuberosus, Chenopodium album, Lolium perenne and Papaver rhoeas). The species included in the second group, i.e. Alsinula media, Apera spica-venti, Atriplex patula, Bromus sterilis, Capsella bursa-pastoris, Equisetum arvense, Fallopia convolvulus, Myosotis arvensis and Thlaspi arvense., responded to reduced tillage by the increase in cover or by increased frequency of occurrence. The third group consists of species such as: Cirsium arvense, Chamomilla recutita, Galium aparine, Lactuca serriola, Matricaria maritima, Triticum aestivum and Viola arvensis. Their cover and frequency of occurrence were in a more degree influenced by factors different from the type of tillage. The manner of tillage appears to be only one of a number of factors that affect the occurrence of weed species. It influences them together with other factors and it is a factor of polyfunctional nature.

The freezing point of milk (FPM) is an instant indicator of violated technological quality of raw milk, especially of dilution. FPM can also vary due to numerous effects associated with changes in milk composition and milk characteristics. Beside the effect of season, phase of lactation, breed, milk yield, sub-clinical mastitis etc. the impacts of nutrition and dietary or metabolic disorders are the most significant and the most frequent (GAJDŮŠEK, 2003). FPM is a relatively stable physical characteristic and due to osmotically active elements it ranges from -0.510 to -0.535 °C (HANUŠ et al., 2003b). Recently ŠUSTOVÁ (2001) studied the freezing point of milk in pool samples; she observed seasonal changes in FPM of mixed milk and the effect of different diets on FPM values. KOLOŠTA (2003) looked into the effect of grazing season on FPM. HANUŠ et al. (2003a) analysed possible effects of handling of milk components on FPM.
The aim of this work was to describe the relationship between FPM and milk components and the impact of breed, number and phase of lactation on FPM. We analysed 328 milk samples in total, out of which 137 samples were of Czech Pied cows and 191 samples of Holstein cows. The effect of number and phase of lactation was evaluated for both breeds together.
The greatest coefficients of correlation in total were found between FPM and lactose content (r = 0.600) and solids non fat (r = 0.523). Lower coefficients of correlation were found between FPM and milk fat content (r = 0.235), milk protein content (r = 0.260) and urea concentration (r = 0.256). These coefficients were considerably lower in Holstein cows than in Czech Pied cows. The coefficients of correlation between FPM and number and phase of lactation and somatic cells count were insignificant.
The total mean value of FPM was -0.534 °C. Breed statistically significantly (P

The work is focused on the use of acoustic emission (AE) in technical practice. AE is a relatively new non-destructive experiment method, which is broadly developing mainly at the end of 20th and beginning of 21st century. The aim of the work is to monitor stress and strain initiation area until yield point. The yield point is a final stress-strain limit for machine parts application. Actual σ - ε state should be detected by material acoustic response. It enables determining of machine usable life. Uniaxial tensile test has been performed to achieve this goal. By use of AE method, the whole A2 screw deformation, all the way to breakdown, has been observed. The record from AE has been compared with force-time (F - t) record. In order of completeness the record has been also compared with another screw types - ČSN 021143.50. The comparison clearly confirmed the conclusion about acoustic activity in connecting element - screw.

Groups of 20 to 23 dairy Czech Pied cows were observed monthly for the period of 12 months (12 test days). The cows in experimental groups were in their early lactation. The mean number of lactation was 2,8, the cows were on average 54.8 days after calving and the mean glucose concentration in blood plasma was 3.93 mmol/l. During the first 100 days of lactation milk yield amounted to 2581 kg with 3.91% fat, 3.48% protein and 4.85% lactose.
The coefficients of the correlation between blood plasma glucose and the observed milk production parameters calculated independently for each test day ranged as follows: -0.597 to 0.130 for number of lactation, -0.389 to 0.585 for days after calving, -0.462 to 0.361 for milk yield, -0.201 to 0.526 for milk fat content, -0.385 to 0.632 for milk protein content and -0.600 to 0.469 for milk lactose content. The calculated coefficients of the correlation between blood plasma glucose and milk production parameters did not reveal a clear tendency in the relationships. However, the graphic polynomial expression showed that glucose level had a positive relationship with days after calving and mainly positive relationship with milk protein content; glucose content had a negative relationship with milk yield and number of lactation and a mainly negative relationship with fat content and lactose content.

Pot trial was aimed to investigate an effect of fertilizer nitrogen on the content of vitamin C and offtake of certain macroelements by Brassica pekinensis. The experiment was realized in the years 2000 and 2001 in pots containing 10 kg of loamy brownsoil. Optimalization of NPK rates contributed to the increase of N, P, K, Mg and S offtake by the yield of final product in comparison with unfertilized control. The most marked increase offtake of nitrogen (by 14,6%) was obtained when fertilizer N was applied in the diveded form (80% N prior to seeding + 20% N in initial phase of heads formation, nitrogen applied as DAM 390). Positive effect of full NPK nutrition on the vitamin C content was determined. The highest content of vitamin C (629.0 mg.kg^-1 of fresh mass) was determined in treatment where nitrogen was applied in the divided rate.

The work was focused on problematics of annual-rings width according to position within the tree stem. Annual-ring widths, ratio of late wood and early wood by spruce with compression wood were investigated. Statistically significant differencies of individual zones in tree were occured. Zone of compression wood showed bigger width of annual-rings, common occurence of late wood and higher percentual ratio of late wood. Obtained results agree with common results in literature. Variability of annual-ring width according to position within the tree stem was confirmed. Width of annual-ring was changed mainly according to radius of stem. In height position within the stem no more significant variability of annual-ring width was observed.

This work deal with modelling of the process of drying, air flow, temperature and moisture distribution in a condensation lumber kiln. This model was made and solved in the computing system ANSYS with the use of the finite element method. There are comparationes of the 2D and 3D models, shape of wood stacks and variability of their parameters (height, width, length, cross section) in the work. The flow velocity and orientation, pressure and temperature field were observed.

This contribution presents partial results of a statistical analysis of export indicators of selected agricultural and alimentary categories of products from the Czech Republic according to countries in a reference period 1993-2002. The analysis includes short-run prediction based on applied modes of developmental tendencies of assessed phenomena.

The paper is aimed at the presentation of findings achieved in the study of the dynamics and trends of the rate of unemployment in selected countries with market and transitive economy in the reference period 1995-2001. In addition to the description of developmental trends of analysed time series by means of trend functions of linear, quadratic, exponential, logarithmic, power and inverse types their informative ability was verified as a starting base for the realization of point prediction of investigated events for 2005. With given 95% probability, minimum and maximum values are determined of the evaluated macroeconomic indicator for a defined time horizon.

This contribution presents results obtained by means of a time series analysis of import, export, turnover, balance of trade, coverage indicator of export with import, according to SITC classes (3^rd Rev.) in the Czech Republic for time interval 1993-2001. Along with description of dynamics of examined effects and their trends there following parameters were also classified: mean level, variability and percentage share of particular classification classes of foreign trade indicators.