Plant, Soil and Environment, 2006 (vol. 52), issue 2
Competition between triticale (Triticosecale Witt.) and field beans (Vicia faba var. minor L.) in additive intercrops
P. Sobkowicz
Plant Soil Environ., 2006, 52(2):47-54 | DOI: 10.17221/3345-PSE 
In a microplot experiment conducted in 1999 and 2000 on light soil triticale and field beans were grown as sole crops and in the intercrop system. Two pure stand plant densities were established: 200 and 400 plants/m2 for triticale and 50 and 100 plants/m2 for field beans. Four possible intercropping combinations were obtained by adding densities of both crops. Triticale was a better competitor than field beans in all intercrops resulting in competitive balance index significantly greater than zero. The number of pods per plant of field beans was significantly reduced in all intercropping combinations compared to the pure stands,...
Dissolved organic carbon and dissolved nitrogen in soil under different fertilization treatments
S.S. Gonet, B. Debska
Plant Soil Environ., 2006, 52(2):55-63 | DOI: 10.17221/3346-PSE
The objective of the study was to evaluate the effects of long-term fertilization of a sandy soil with differentiated doses of cattle slurry as well as its after-effect action on the possibilities of migration of dissolved organic carbon (DOC) and dissolved nitrogen (DNt) down to deeper layers of the soil profile. DOC and DNt were extracted with borate buffer and 0.004M CaCl2 solution. Evaluation of effects of cattle slurry on the content of DOC and DNt was done in comparison with mineral fertilization. It was shown that the use of cattle slurry in the doses of 100 and 200 m3/ha caused a significant increase of labile organic...
The Cd mobility in incubated sewage sludge after ameliorative materials additions
A. Hanč, P. Tlustoš, J. Száková, J. Balík
Plant Soil Environ., 2006, 52(2):64-71 | DOI: 10.17221/3347-PSE
Cadmium mobility in sewage sludge amended by four types of ameliorative materials (lime, limestone, bentonite and zeolite) incubated under aerobic and anaerobic conditions for eight months was studied in the experiment. The most statistically significant decrease of available Cd extracted by 0.01 mol/l CaCl2 was recorded in sludge between second and fourth months of incubation. As most effective stabilizers were found limestone and bentonite added into the sludge incubated under aerobic and anaerobic conditions respectively. The presence of air reduced Cd mobility in individual sludges more than lack of air. Cadmium was separated by sequential...
Sulphur supply to peas (Pisum sativum L.) influences symbiotic N2 fixation
H.W. Scherer, S. Pacyna, N. Manthey, M. Schulz
Plant Soil Environ., 2006, 52(2):72-77 | DOI: 10.17221/3348-PSE
In a pot experiment (culture substrate: perlite with a granulometric composition 0-3 mm) with peas (Pisum sativum L.) we studied the influence of sulphur supply on S and N concentrations, yield formation, symbiotic N2 fixation and available amounts of glucose and sucrose. Under S deficiency conditions S and N concentrations as well as the amounts of glucose and sucrose in shoots and nodules were significantly reduced. We assume that the reduced amounts of available photosynthate with suboptimal S supply could become limiting to energy production and as carbon skeletons for ammonia assimilation, and therefore cause a lower N2...
Effect of selenium foliar application on its content in winter wheat grain
L. Ducsay, O. Ložek
Plant Soil Environ., 2006, 52(2):78-82 | DOI: 10.17221/3349-PSE
The influence of modified pratotechnics of unmanaged grasslands on the amount of mineral nitrogen in lysimetric waters of the rhizosphere
J. Fiala
Plant Soil Environ., 2006, 52(2):83-87 | DOI: 10.17221/3350-PSE
In 2001-2004, the influence of various ways of farming unmanaged grasslands on the mineral nitrogen content in lysimetric waters was monitored. Field trials with 11 variants were performed 420 m above sea level, at depths of 0.2 and 0.4 m, 4-5 times annually. The average amount of Nmin released per ha per year in lysimetric waters ranged from 0.84 to 5.12 kg. The upper layer to a depth of 0.2 m had a higher content. The conclusive difference, in comparison with properly farmed control, was with the black fallow and in the variant where fallow followed mulching. With the exception of this method of farming the pratotechnics of unmanaged grasslands...
Nitrate uptake and N allocation in Triticum aestivum L. and Triticum durum Desf. seedlings
M. Trčková, Z. Stehno, I. Raimanová
Plant Soil Environ., 2006, 52(2):88-96 | DOI: 10.17221/3351-PSE
Inter- and intra-species differences in nitrate uptake and N allocation were studied in wheat seedlings. Two collections of wheat cultivars Triticum aestivum and Triticum durum were grown at controlled conditions in hydroponics (773µM NO3-, i.e. 10.8 ppm N-NO3-). At the age of 3 weeks the net rate of nitrate uptake was measured in depletion experiments and it was expressed as µmol NO3- per g of root fresh weight per hour (µmol/g FW/h). Nitrate uptake capacity of the whole root system was expressed as µmol NO3- per plantper...