Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Fertilizers analytical procedures potassium

In the United States the analytical methods approved by most states are ones developed under the auspices of the Association of Official Analytical Chemists (AOAC) (3). Penalties for analytical deviation from guaranteed analyses vary, even from state to state within the United States (4). The legally accepted analytical procedures, in general, detect the solubiUty of nitrogen and potassium in water and the solubiUty of phosphoms in a specified citrate solution. Some very slowly soluble nutrient sources, particularly of nitrogen, are included in some specialty fertilizers such as turf fertilizers. The slow solubihty extends the period of effectiveness and reduces leaching losses. In these cases, the proportion and nature of the specialty source must be detailed on the labeling. [Pg.214]

There are three primary elements in fertilizers that require analytical determinations nitrogen (N) available phosphate (AP) for plant uptake expressed as P2O5 and water-soluble potassium expressed as K2O. Procedures are examined to determine values based on the best methods available for the primary elements, secondary elements, micronutrients in fertilizers, and other trace elements. Uniform methods can eliminate problems associated with fertilizer analyses, resulting in agreement between laboratories on a given sample. By following the exact procedures as outlined in an acceptable method, one can expect a reliable and reproducible chemical analysis. [Pg.1224]


See other pages where Fertilizers analytical procedures potassium is mentioned: [Pg.1229]   
See also in sourсe #XX -- [ Pg.118 , Pg.119 , Pg.120 , Pg.121 ]




SEARCH



Analytic Procedures

Analytical procedures

Fertilizers analytical procedures

Fertilizers potassium

Potassium fertilization

© 2024 chempedia.info