NUTRIENT RECOMMENDATIONS BY REMOVAL
Build-up and Maintenance has been, and remains the recommendation system used to determine the amount of phosphorus and potassium since the early 1970s. It is based upon building soil tests to specific optimum levels and uses broad estimates of soil's Phosphorus Supplying Power (phosphorus) and Cation Exchange Capacity (potassium) to generate specific application rates, along with an allowance for soil fixation prior to plant utilization.
New technologies now allow us to be site-specific when it comes to harvest yield and nutrient removal. Rather than estimate nutrient needs with soil tests that roughly estimate plant-available nutrients with little correlation to harvest yield, why not take advantage of data collection and start basing nutrient needs upon what the crop removes each growing season? Makes sense and it works! Below are the most recent nutrient removal rates released by Midwest Land Grant Universities.
New technologies now allow us to be site-specific when it comes to harvest yield and nutrient removal. Rather than estimate nutrient needs with soil tests that roughly estimate plant-available nutrients with little correlation to harvest yield, why not take advantage of data collection and start basing nutrient needs upon what the crop removes each growing season? Makes sense and it works! Below are the most recent nutrient removal rates released by Midwest Land Grant Universities.
