What’s New with K Fertilizer Use?

 

Available research-based information continues to verify that the soil test potassium (K) level of 125 ppm as a critical level for K application is adequately high for agronomic crops of Nebraska. The probability of profitable response to K application is very low if soil test K is above 125 ppm.

 

In three studies of corn response to applied K involving over 50 trials, there was a 2-4 bu/ac average decrease in yield during the year of application. The decrease was not greater with application of 86 compared with 43 lb/ac of K2O. The cause of the decrease has not been well determined. There is no evidence for such a decrease with other crops or of the reduction effect for corn persisting beyond the year of application although this has not been well-studied. These results suggest that

The UNL K recommendations are available in the Nebraska Extension publication, Nutrient Management for Agronomic Crops of Nebraska (EC155). We realize that some advisors recommend K rates in excess of UNL recommendations, but available research-based information indicates that these higher rates reduce profit potential.

 

Video: Syngenta Ag Stories - Robyn McKee, Government and Industry Relations Manager

Syngenta Ag Stories - Robyn McKee, Government and Industry Relations Manager.

You don't need to grow up on a farm to build a career in Canadian agriculture. Robyn grew up in Richmond, Ontario - not on a farm, but in a community shaped by them.

Now she works at the intersection of policy, innovation, and the people who grow our food. Her drive? Making sure the right people understand what Canadian agriculture needs to thrive.

Her message to the next generation: "Agriculture today is full of possibilities - science, technology, business, communications, and policy. You're helping grow the food we eat, and it's hard to think of many things more impactful than that."