Effect of silicon on barley growth and NO emission under flooding.

The global climate change is related with greenhouse gas emission from cultivated soils - carbon dioxide, methane and nitrous oxide. The emissions of NO also have negative influence on ozone layer of our planet. The major source of the nitrous oxide is denitrification process in soil, which controlled by specific soil microbe society.

Methane production and consumption in loess soil at different slope position.

Methane (CH(4)) production and consumption and soil respiration in loess soils collected from summit (Top), back slope (Middle), and slope bottom (Bottom) positions were assessed in laboratory incubations. The CH(4) production potential was determined under conditions which can occur in the field (relatively short-term flooding periods with initially ambient O(2) concentrations), and the CH(4) oxidation potential was estimated in wet soils enriched with CH(4). None of the soils tested in this study emitted a significant amount of CH(4).