Are we meeting crop K needs?

 

Using the 4R nutrient stewardship approach of selecting the right source at the right rate at the right time and in the right place is just as important when dealing with a nutrient supply challenges as it is for reducing risk of nutrient loss, according to an article on NutrientStewardship.com. Potassium (K) behavior in the soil is different from nitrogen (N) or phosphorus (P). While some of the same factors influence your 4R decisions, right source, right rate, right time, and right place; the variability of the soil’s ability to supply and store K is quite dynamic. Availability of K in the soil is dependent on the percent and type of clay present, cation exchange capacity (CEC, meq/100 g), organic matter (OM) content, soil moisture level, and soil temperature.

 

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