Plant, Soil and Environment, 2006 (vol. 52), issue 3
Microbiological parameters of soil set aside before and after desiccation
M. Nováková, K. Voříšek
Plant Soil Environ., 2006, 52(3):97-104 | DOI: 10.17221/3352-PSE 
Herbaceous cover of luvic chernozem (seven years set aside) with legumes, perennial grasses and their mixture was desiccated by the glyphosate herbicide Roundup Biaktiv (5 l/ha at July 2003 and 4 l/ha at June 2004). 165 soil samples were collected before (November 2002-July 2003) and after desiccation (September 2003-August 2004). Desiccation had a strong positive effect on immobilization of organic carbon from herbaceous cover and underground biomass to microbial biomass carbon (MBC) and to soil organic carbon (Corg), respectively. A significant increase after desiccation (p < 0.01) was confirmed in the parameters: Corg,...
New Rhizobium leguminosarum bv. trifolii isolates: collection, identification and screening of efficiency in symbiosis with clover
T. Šimon
Plant Soil Environ., 2006, 52(3):105-110 | DOI: 10.17221/3353-PSE
Suitable clover stands (field and meadow) were chosen to isolate new R. leguminosarum bv. trifolii strains. Together 49 strains were isolated, labelled and maintained. Ten primers were used for identification and amplification products were detected by agarose electrophoresis. Amplification products of individual primers did not make possible to distinguish all isolates; a combination of at least two primers was necessary. No differences in genetic variability level between field and meadow isolates were found. Hydroponic perlite experiments were used for the screening of rhizobial isolates and the tetraploid red clover variety Amos...
Growth and yield response of spring wheat (Triticum aestivum L.) to inoculation with rhizobacteria
A. Salantur, A. Ozturk, S. Akten
Plant Soil Environ., 2006, 52(3):111-118 | DOI: 10.17221/3354-PSE
The growth and yield response of spring wheat to inoculation with foreign and local rhizobacteria of Erzurum (Turkey) origin was studied. At the first stage of the research, a greenhouse experiment was carried out with wheat cv. Kirik using 75 local bacterial strains isolated from the soil with 6 foreign bacteria, and a control. According to results of the greenhouse experiment 9 local strains were identified. At the second stage, the response of wheat cv. Kirik to 20 treatments (9 local strains, 6 foreign bacteria, 4 levels of N, and a control) was investigated in Erzurum field conditions. Seventeen strains had significant positive effects on tiller...
Paranodules and colonization of wheat roots by phytohormone producing bacteria in soil
N. Narula, A. Deubel, W. Gans, R.K. Behl, W. Merbach
Plant Soil Environ., 2006, 52(3):119-129 | DOI: 10.17221/3355-PSE
Soil bacteria belonging to the genus Azotobacter, Pantoea and some unidentified soil isolates were tested in vitro for phytohormone production under laboratory and soil conditions. The German wheat variety Munk was inoculated by several soil bacteria with exogenously applied hormones (IAA, 2,4-D) and a flavonoid(naringenin) with a half of the amount of recommended doses of fertilizers under greenhouse conditions. Most of the soil bacteria tested were able to produce indole acetic acid (IAA), and stimulated a lateral root development and colonization by the addition of 2,4-D and IAA. A formation of paranodules on...
Effect of co-inoculation with phosphate and potassium solubilizing bacteria on mineral uptáme and growth of pepper and cucumber
H.S. Han, Supanjani, Lee K.D.
Plant Soil Environ., 2006, 52(3):130-137 | DOI: 10.17221/3356-PSE
Biofertilizers have been used as sources to improve plant nutrients in sustainable agriculture. Experiments were conducted to evaluate the potential of phosphate solubilizing bacteria (PSB) Bacillus megaterium var. phosphaticum and potassium solubilizing bacteria (KSB) Bacillus mucilaginosus inoculated in nutrient limited soil planted with pepper and cucumber. Results showed that rock P and K applied either singly or in combination did not significantly enhance soil availability of P and K, indicating their unsuitability for direct application. PSB was a more potent P-solubilizer than KSB, and co-inoculation of PSB and KSB...
Fate of carbon and nitrogen from plant residue decomposition in a calcareous soil
F. Nourbakhsh
Plant Soil Environ., 2006, 52(3):137-140 | DOI: 10.17221/3357-PSE
Carbon and nitrogen transformations in soil are microbially mediated processes that are functionally related. The fate of C and N was monitored in a clay-textured soil (Typic Haplocambid) which was either unamended (control) or amended with various plant materials at the rate of 10 g residue C/kg soil. To evaluate C mineralization, soils were incubated for 46 days under aerobic conditions. Nitrogen mineralization/immobilization was evaluated at the end of eight-week incubation experiment. All CO2 evolution data conformed well to a first-order kinetic model, Cm = C0 (1 - e-Kt). The product of K and...