Plant, Soil and Environment, 2002 (vol. 48), issue 10
Spatial distribution and correlation of soil properties in a field: a case study
L. Borůvka, H. Donátová, K. Němeček
Plant Soil Environ., 2002, 48(10):425-432 | DOI: 10.17221/4391-PSE 
Analysis of spatial distribution and correlation of soil properties represents an important outset for precision agriculture. This paper presents an analysis of spatial distribution and mutual correlations, both classical and spatial, of soil properties in an agricultural field in Klučov. Clay and fine silt content, pH, organic carbon content (Corg), moisture (Q), total porosity (Pt), capillary porosity (Pc), and coefficients of aggregate vulnerability to fast wetting (Kv1), to slow wetting and drying (Kv2), and to mechanical impacts (Kv3) were determined. Semivariogram ranges from 206 m (clay...
Sulfur and sulfate concentrations in leaves of oilseed rape under field conditions
J. Matula, M. Pechová
Plant Soil Environ., 2002, 48(10):433-440 | DOI: 10.17221/4392-PSE
In 1999-2001 sulfur and sulfate concentrations were studied in expanded young leaves of rapes of the line variety Lirajet and hybrid variety Pronto at the onset of stem elongation (DC 30), flowering (DC 64) and early maturity (DC 70) in different localities of the Czech Republic. Except the S-deficient site the concentration of total sulfur and sulfates in leaves considerably increased in higher growth stages. A less steep increase in S concentration in leaves was associated with rather humid growing season, especially with April precipitation. Great time variations in sulfur concentrations in leaves signal a possibility of diagnostic misinterpretation...
Geochemical and anthropogenic soil loads by potentially risky elements
R. Vácha, J. Němeček, E. Podlešáková
Plant Soil Environ., 2002, 48(10):441-447 | DOI: 10.17221/4393-PSE
The differentiation between anthropogenic and geogenic loads of the soils by potentially risky elements was observed. The collection of soil horizon samples from 21 localities with different anthropogenic loads (imission fall-outs, floods, historical mining) and geogenic loads (lithogenic, chalcogenic) was composed. The soil characteristics (pH, Cox), total content of 13 potentially risky elements, content of potentially risky elements in the extract of 2M HNO3, 1M NH4NO3 (mobile forms) and 0.025M EDTA (potentially mobilizable forms) were detected. The solubility as the ratio of total content and the content...
Influence of fertilization application and growing substrate on container-grown woody ornamentals
F. Šrámek, M. Dubský
Plant Soil Environ., 2002, 48(10):448-457 | DOI: 10.17221/4394-PSE
Five fertilization systems and seven types of growing substrates were tested with two woody plant species with different nutritional demands (Thuja occidentalis, Pyracantha coccinea) grown in two-litre containers. The experiment was repeated in two vegetative seasons. Application of controlled release fertilizer (CRF) was proved the most reliable; it gave good or at least average results in dependence on used growing substrates. Significant differences between application of CRF and other fertilization systems were with Pyracantha plants. System using slow release fertilizer with additional nitrogen fertilizing also showed...
Yields and root technological quality of sugar beet grown in crop rotation and long-term monoculture
B. Rychcik, K. Zawiślak
Plant Soil Environ., 2002, 48(10):458-462 | DOI: 10.17221/4395-PSE
The paper presents the findings of 6-year (1993-1998) investigations obtained in the field static experiment continued since 1967. This experiment concerned the estimation of the crop yield and its structure, and root technological quality under the conditions of crop rotation and extreme shortening of the rotation, i.e. monoculture. Investigations have proved that under agroclimatic conditions of north-eastern Poland it is possible to obtain 60 t of roots per ha in a naturally correct crop rotation, while in a long-term monoculture - 33 t, and 36 t and 19 t of top, respectively. The differences in monoculture crops occurred as a result of a plant...
Management system and mineral nitrogen rate impact on the barley grain composition and its nutritional value for ruminants
B. Čeh Brežnik, I. Šantavec, A. Tajnšek
Plant Soil Environ., 2002, 48(10):463-470 | DOI: 10.17221/4396-PSE
Many factors, most notably climate, soil, genotype and fertilising, can influence barley grain composition and its nutritive value. The aim of the research was to evaluate the impact of mineral N rate in different management systems in the static long-term experiment with three years field rotation of grain maize, wheat and barley on the chemical composition of winter barley and its nutritive value for ruminants. Crude protein content and metabolizable crude protein content were increasing with increased mineral N rates. Higher yield meant lower crude protein and metabolizable crude protein content in all mineral N rates. The average crude protein...
Effect of growth regulators on rooting cuttings of Karwinskia species under in vivo conditions
M. Henselová, A. Lux, E. Masarovičová
Plant Soil Environ., 2002, 48(10):471-476 | DOI: 10.17221/4397-PSE
Effect of the growth regulators Atonik, Rastim 30 DKV, Stimulator AS 1, and Stimulax III on rooting of half-woody shoots of the species Karwinskia humboldtiana (Roem et Schut) Zucc. and Karwinskia parvifolia Rose was studied. Rooting does not occur without stimulation in these species, after stimulation rhizogenesis takes 14 to 16 weeks. Growth regulators, with the exception of the preparation Atonik, showed a significantly stimulating effect on rhizogenesis, and effect of them declined in the order Stimulax III, Stimulator AS, and Rastim 30 DKV. The percentage of rooting in the species Karwinskia humboldtiana was higher...