My soil test shows adequate K levels. Is there still a benefit to apply any this year?
eKonomics News Team
A. There are a couple of good reasons to consider applying K if your soil test level is considered adequate.
1) There is value in maintaining your current soil test level, so applying a maintenance rate of potassium fertilizer will allow you to do that. This even applies to high soil test levels, but obviously the higher your soil test the less likely you are to see a response to fertilization this year.
2) If your soil test level is very close to the critical level established for your state/region, applying K will ensure that more of your production area is at a level to support maximum production. Remember, a good soil test is a representative average of the area you plan to seed to a crop, and if the average soil test is near the critical, you likely have areas that would be considered low.
My video that discusses the reason to apply maintenance applications of K may also help you out.