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Using Soil Tests to Evaluate Plant Availability of Potassium in Soils

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dc.contributor.author Bell, Michael J.
dc.contributor.author Thompson, Michael L.
dc.contributor.author Moody, Philip W.
dc.date.accessioned 2021-12-10T01:38:54Z
dc.date.available 2021-12-10T01:38:54Z
dc.date.issued 2020
dc.identifier.uri ${sadil.baseUrl}/handle/123456789/1636
dc.description 28 p. ; PDF en_US
dc.description.abstract The purpose of this chapter is to describe how bioavailable soil K is assessed or predicted by soil tests. Soil testing commonly refers to the collection of a sample of soil representative of a field or agronomic management unit and, by way of extraction using chemical reagents, determination of the quantity of a nutrient that can be related to plant uptake or yield. Normally only a small fraction of the total quantity of the nutrient present in the soil is extracted during the procedure, but if that amount can be correlated with actual crop uptake or overall crop productivity, then the soil test is deemed to have useful predictive power. Soil tests are routinely used to guide applications of fertilizer to soil so that crop demand for nutrients can be met effectively and economically. Here, we summarize the procedures involved in collecting a representative soil sample for K analysis, outline how that sample should be prepared for laboratory analysis, highlight the principles and mode of action of routine soil tests, and explore some common issues that may confound the correlation between a soil K test result and plant K acquisition or crop yield. Soil testing methods are discussed in the context of their relationship to the different forms of soil K and the in-soil chemical processes that may change these forms into K that can be taken up by roots. en_US
dc.language.iso en en_US
dc.publisher Springer Nature en_US
dc.subject Bioavailable en_US
dc.subject Soil sample preparation en_US
dc.subject Plant K acquisition en_US
dc.subject Plant K demand en_US
dc.title Using Soil Tests to Evaluate Plant Availability of Potassium in Soils en_US
dc.type Book chapter en_US


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