Suffi ciency Ranges
Macronutrients
N P K Ca Mg S
3.10–4.27% 0.26–0.48% 1.98–4.22 % 0.90–1.84% 0.16–0.32% 0.15–0.57%
Micronutrients
Fe Mn Zn Cu B
undetermined 51–149 ppm 16–45 ppm 5–28 ppm 6–15 ppm
Important Ratios
Maintain the N:S ratio between 5:1 and 15:1.
• DRIS