Step 7. Sprinkle about 1/2 tablespoon of all-purpose flour for every 1/2 cup of sour cream and heavy cream in the mixing bowl if you want to cook with the creme crÃ¨me fraiche. Substitute the flour stabilizes the creme fraiche substitute when, heated but it does thicken it a little. bit
Hydric Soils - Introduction Definition. The definition of a hydric soil is a soil that formed under conditions of saturation, flooding or ponding long enough during the growing season to develop anaerobic conditions in the upper part. Field Indicators
The physical, chemical and biological properties which make hydric soils recognizable are the result of complex biogeochemical processes occurring over many years. Hydric soils usually have a water table, or the top of a zone of saturation, within one foot from the soil surface during the growing season. This shallow water table excludes oxygen and so creates a reducing environment, especially in the upper part of the soil profile. As a result, mostly hydrophytic plants proliferate -- such as rushes, cattails, sedges and skunk cabbage. Most soils, including hydric soils, are dominantly composed of minerals such as quartz, feldspars, clay minerals, etc. However, hydric soils commonly have a build-up of organic matter at the soil surface, for reasons described above, which can make the surface horizon dark colored. If the organic matter content (measured as organic carbon) is greater than 20 to 30% of the soil's weight (depending upon clay content) and this organic-rich layer is over 16 inches thick, then it is considered an organic soil.