Figure 2
From: Nutritional quality, nutrient uptake and biomass production of Pennisetum purpureum cv. King grass
Linear relationship between biomass production of King grass on different cutting days and in systems with and without fertilization. Plots were created in MATLAB R2021a. FM fresh matter, DM dry matter. Lineal regression equations (C cutting day): Biomass FM with fertilization: − 199.4084 C2 + 28,382.8977C − 240,005.9343. r2 = 0.8113, n = 63, P < 0.001. Biomass FM without fertilization = − 53.7566 C2 + 8406.3371 C − 58,284.7854. r2 = 0.9069, n = 63, P < 0.001. Biomass DM with fertilization = − 32.0241 C2 + 4824.9404 C − 58,229.4563. r2 = 0.8290, n = 63, P < 0.001. Biomass DM without fertilization: = − 8.2090 C2 + 1374.6121C − 13,776.6985. r2 = 0.8997, n = 63, P < 0.001.
