The impact of Trichoderma harzianum on sprouting and early development of pepper until thinning

This paper presents the results of the study on the analysis of the stimulative and biopesticide effects of the fungus Trichoderma harzianum T-22 on germination, sprouting and early development of two pepper varieties (Amfora and Buketna 1) in organic production. The results show the significant effect of the applied T-22 strain on ger­mination, sprouting, growth and early development of both aboveground and underground parts of plants, either used as soil or seed inoculum, in comparison to controls. It was concluded that T. harzianum T-22 proved its efficiency in promoting growth and development of pepper, and preventing the development of mycoses. [Projekat Ministarstva nauke Republike Srbije, br. TR31031: Promotion of sustainability and competitiveness in organic plant and stock production using new technologies and inputs

Synthesis of biomorphaus SiC-ceramics

The carbothermal reduction processing of partially mineralized fir (Abies alba) samples was used to obtain highly-porous SiC ceramics with cellular structure. The infiltration of TEOS (tetraetilortosilikat, Si(OC2H5)4) as a silica source, was conducted in order to carry out the mineralization process. Synthesis of the SiC was achieved with a C/SiO2 replica annealing at 1723 K in Ar atmosphere. The obtained samples were characterized using X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and energy dispersive spectrometry (EDS). The experimental results revealed that the hierarchical bimorphous wood structure was preserved even after high-temperature treatment. Microstructural characterization of the ceramics revealed the presence of the P-SiC phase and traces of the a-SiC phase

ELF electro-magnetic fields as stress factors in some yeasts and molds

The possibility of species targeted growth inhibition of three yeast (Candida albicans, Cryptococcus neoformans and Saccharomyces cerevisiae) and one mold species (Aspergillus fumigatus) by electromagnetic fields of certain characteristics was investigated. Cultures were exposed to sinusoidal 50 Hz fields, and 10, 40 and 70 mT magnetic components and 20 V/m electric component, for 30 minutes. Cell density in yeast cultures and germination time and rate in mold cultures were investigated