Sign up for email alerts of new Fluid Journal issues!
Fluid Journal : Fluid Journal 1993-1995
3 Fluid Journal Summer 1994 What affects K uptake Soil aeration. Uptake of K is affected more by poor aeration than most other nutrients. Minimum tillage and compaction limit K uptake. Low soil test. As level of soil test K drops, root uptake decreases. Fixation. Soils that trap K and hold it in unavailable form reduce the amounts available for plant uptake. CEC. In general, soils with high CECs have greater storage capacity and supplying power for K. Soil temperature. Low soil temperature reduces the availability and uptake of K by plant roots. Its effect can be partially offset by increasing soil K levels. Soil moisture. Both drought stress and excess moisture reduce plant uptake of K. Soil itself. Soil's overall characteristics determine how efficiently crops uptake K. Included are parent material from which soil was formed, amounts and types of clay materials soil contains, vegetation under which soil was formed, topography, drainage, depth, etc. Applying K Methods of applying K are many fold: • surface broadcast without incorporation • broadcast and disk • broadcast and plow down • direct seed placement • banding, including various combinations of distances below and to the side of the seed • deep placement or knifed • surface strips • fertigation.
Fluid Journal 1996-1998