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National Repository of Grey Literature 1 records found  Search took 0.01 seconds. 
The innovation of methods to control phosphorus status of agricultural soils from consensus of agricultural and environmental apsects of frugal using natural resources
 Matula, Jiří
Methodology solves efficient phosphorus supply levels of agricultural soils from agricultural and environmental consensus trough recognition of maximum and minimal concentration of soluble phosphorus fraction in soil solution which is really needed to keep reasonable crop production of agricultural fields. The limitation and do not crossing of necessary maximum P-concentration in soil solution also helps to minimize possible P-losses by surface runoff and subsurface flow. The basic step of solution is standardized laboratory technique extraction of soil solution from soil sample including also the terminal-analytical P determination. And then the estimation range of convenient P concentration in soil solution. The last step is regression between multi-nutrient soil tests (water extraction, ammonium acetate extraction with addition ammonium fluoride and Mehlich 3 soil test) and P-concentration in soil solution. In the case of close regression is then used for recalibration soil tests from agricultural-environmental consensus.
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