Plant, Soil and Environment, 2005 (vol. 51), issue 6
Soil and plant pollution by potentially toxic elements in Slovakia
J. Kobza
Plant Soil Environ., 2005, 51(6):243-248 | DOI: 10.17221/3581-PSE 
The Problem of soil and plant pollution by heavy metals in Slovakia is evaluated in this study. The measured data on the main risk elements have been obtained from a soil-monitoring grid in Slovakia, which consists of 318 agricultural sites. Analytical procedures of Cd, Pb, Cr, Ni, Zn, Cu (extracted by 2 mol/l HNO3 and by 0.05 mol/l EDTA) as well as the total content of the described elements including Hg have been used for soil samples. Also the plants collected at the same sampling sites were analysed for their Cd, Pb, Cr and Hg contents. On the basis of the obtained results it may be concluded that significant pollution was determined...
The measurement of plant residues distribution quality after harvest by conventional and axial combine harvesters
F. Kumhála, Z. Kvíz, J. Mašek, P. Procházka
Plant Soil Environ., 2005, 51(6):249-254 | DOI: 10.17221/3582-PSE
This paper concerns the evaluation of the husk and straw distribution quality measurement on different commonly used combine harvesters. The plant residues can significantly influence the next plant germination and growth, especially when they are unevenly placed on the field surface. The experiments were realised during the harvesting season in years 2001, 2002 and 2003. All machines were evaluated under normal operational conditions by winter wheat and oil rape harvest. For plant residues distribution quality evaluation the Christiansen's coefficient was calculated. The most important outcome from the measurement is that the distribution pattern...
Effects of winter wheat cover crop desiccation times on soil moisture, temperature and early maize growth
B. Stipešević, E.J. Kladivko
Plant Soil Environ., 2005, 51(6):255-261 | DOI: 10.17221/3583-PSE
Two tillage systems for maize (Zea mays) after soybean (Glycine max), no-till (NT) and conventional till (CT), which consisted of double disking in the spring, were included in the experiment on two sites in Indiana, USA. Each tillage plot had three winter wheat (Triticum aestivum L.) cover crop levels: no cover crop (N), early desiccation (E), 3-4 weeks prior to planting the maize, and regular desiccation (R), within the maize planting week. Due to the mulching effect, both E and R for both tillage systems increased soil moisture, except in the case of spring drought, when E proved dominant. Soil temperature for both tillage...
Digested residue as a fertilizer after the mesophilic process of anaerobic digestion
N. Voća, T. Krička, T. Ćosić, V. Rupić, Ž. Jukić, S. Kalambura
Plant Soil Environ., 2005, 51(6):262-266 | DOI: 10.17221/3584-PSE
The aim of this paper is to determine the difference in quality of the digested residue after the process of anaerobic digestion by using different input raw materials. The research was conducted in the Republic of Austria on four facilities for biogas production. The raw materials used for biogas production were chicken manure, pig manure, Sudan grass and organic household waste. The research included chemical analysis and bacteriological tests of the samples taken. It was found that the digested residue in all of the samples, all of which are mildly alkaline, contains a low level of dry matter, 70% of which is organic matter. Biogenic elements were...
Nitrogen transfers from Vicia sativa L. and Trifolium resupinatum L. to the companion grass and the following crop
W. Opitz Von Boberfeld, E. Beckmann, H. Laser
Plant Soil Environ., 2005, 51(6):267-275 | DOI: 10.17221/3585-PSE
The course of N-NO3- concentrations in soil, N transfer from the catch crops Vicia sativa L. and Trifolium resupinatum L. to the companion grass Lolium multiflorum ssp. gaudinii (Parl.) Schinz et Keller, and the preceding crop effect on Lolium multiflorum ssp. italicum (A. Br.) Volkart were studied in a field experiment. Catch crops were sown in pure stands and grass/legume swards (= two species in alternating rows) at two sowing dates and harvested at different dates from August to November. Vicia sativa was more effective concerning N2 fixation than Trifolium...
Aliphatic compounds, organic C and N and microbial biomass and its activity in long-term field experiment
T. Šimon
Plant Soil Environ., 2005, 51(6):276-282 | DOI: 10.17221/3586-PSE
The content of aliphatic compounds, hydrophobicity index, organic C and N content and the microbial biomass and respiration activity were analysed in soil samples originating from different plots of a long-term field experiment (variants: nil, NPK - mineral fertilization: 64.6-100 kg/ha/year, FYM - farmyard manure and FYM + NPK) from three blocks (III, IV and B) with different crop rotation. Samples were taken from 0-200 mm layer in 2002 and 2003 (spring and autumn). The plots without any fertilization had the significantly lowest aliphatic compound content compared to variants fertilized by FYM or FYM + NPK in all the evaluated blocks in both years....
The allelopathic effects of juglone and walnut leaf extracts on yield, growth, chemical and PNE compositions of strawberry cv. Fern
S. Ercisli, A. Esitken, C. Turkkal, E. Orhan
Plant Soil Environ., 2005, 51(6):283-287 | DOI: 10.17221/3587-PSE
Allelopathic effects of juglone and walnut leaf extracts from Persian walnut (Juglans regia L.) on yield, growth, chemical and plant nutrient element composition of the day-neutral strawberry (Fragaria × ananassa L.) cultivar Fern were investigated as part of an effort to identify tolerant species to plant adjacent to walnut. Strawberry plants were treated with juglone (5-hydroxy-1.4 naphthoquinone, 1mM) and walnut leaf extracts (undiluted, 1/2, 1/4, 1/8 diluted). Vegetative and reproductive plant growth was inhibited strongly by the treatment of both juglone and undiluted walnut leaf extracts. Fruit yield per plant, the...