Evidence, Regulation, and Consequences of Nitrogen-Driven Nutrient Demand by Turfgrass
Figure 7
Phosphorus and K content as a function of tissue N content for 419 tissue samples collected from putting greens around the state. Each data point represents a mean of all points within a particular N range. For example the 4.25 % N data points for P and K are the averages for all tissue samples with an N content between 4.0% and 4.5% (). Both regression models were statistically significant ().