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Your search keyword '"ŠANTRŮČEK, JAROMÍR"' showing total 8 results
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8 results on '"ŠANTRŮČEK, JAROMÍR"'

2. Effect of Different Plant Arrangements on Maize Morphology and Forage Quality

Author

Jirmanová Jana, Fuksa Pavel, Hakl Josef, Brant Václav, and Šantrůček Jaromír

Subjects
row spacing, stand density, plant height, plant parts, ndf, crude protein, starch content, Agriculture
Abstract

A study was carried out in Central Bohemia to understand the effect of row spacing and stand density on plant morphology, productivity and quality of silage maize in two row spacing treatments (0.70 m and 0.35 m) at two stand densities (92,000 plants/ha and 110,000 plants/ha). The results of the study showed that row spacing and stand density had no effect on plant height or weight; however, significantly higher ear ratio and dry matter content was found in narrow rows at 110,000 plants/ha. It was observed that plant morphology was affected more by the interaction between row spacing and stand density than by a single effect of tested factors. Significantly higher dry matter yield was recorded at higher stand density, but there was no row spacing × stand density interaction. Row spacing had no impact on the whole plant neutral detergent fiber (NDF) content, crude protein of stover and starch content of ear, while narrow rows resulted in almost significantly higher stover NDF content. Our results suggest that narrow rows could be advantageous for maize morphology and quality in cases where higher stand density is applied.

Published
2016
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8. Chrom v hydrogeologii

Author

Sadloň, Matúš, Nedvěd, Jakub, and Šantrůček, Jaromír

Subjects
inorganic chemicals, chromium trivalent, kontaminace podzemních vod, sanační metody, chrom trojmocný, contamination of groundwater, chromium hexavalent, remediation methods, chrom šestimocný, otorhinolaryngologic diseases, technology, industry, and agriculture
Abstract

in English Chromium, particularly its two most stable oxidation states - hexavalent and trivalent chromium - plays a very significant role in the environment. While trivalent chromium is an essential nutrient both for humans and plants, hexavalent chromium proved to be one of the most dangerous contaminants negatively affecting people and the environment on a wide- ranging scale. This thesis aims to provide a complex overview of chromium occurrence in various natural systems, its physical and chemical properties as well as its mobility in the environment. Furthermore, the thesis will describe two case studies (from Greece and India), which illustrate both the natural and anthropogenic sources of hexavalent chromium contamination. Due to its mutagenic and carcinogenic properties, a complex set of remediation methods was suggested for hexavalent chromium removal, including both in-situ and ex-situ ones. Given their proven record in successful elimination of hexavalent chromium contamination from groundwater, in-situ methods are being utilised far more frequently nowadays; these will be explained more comprehensively. The most notable categories of in- situ remediation methods include biological and chemical reduction, chemical precipitation and chemical sorption. Besides these, other promising...

Published
2018

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