|
| The recommendations of how much P and K to apply depends on your soil test,soil type, and yield goals. IMO, you really want to get the soil tests into the optimum range and then apply the crop removal rate that the UW recommends either yearly or some choose to apply 2 years worth at one time to reduce application costs. That should give you the most economic benefit.
If your P and K levels are below the optimum level for your soil type and yield goals, the soil test report will recommend you to put on a level of fert. that is above the normal removal rate. The rate the soil test recommends in this type of situation is designed to bring the soil tests to the optimum level after about 4 or 5 years if applied like recommended.
Are the fields you are talking about former dairy farm fields? So much manure got put on some fields around here that I'm sure one could grow a corn/soybean rotation for ALOT of years with only N added on the corn year. That could be one reason to explain why your tests have remained high because they were off the charts to begin with.
| |
|
Crop Removal & Broadcasting P & K
