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¶ Introduction
The nutrient uptake values presented in this Crop File are based on whole plant samples collected from six different corn hybrids (34,000 plants per acre) at two Illinois locations during the 2010 growing season. Samples were collected at the V6 (6-leaf), V10 (10-leaf), V14 (14-leaf), R2 (blister), R4 (dough), and R6 (physiological maturity) growth stages, then separated into the four components.
¶ Figure 1.
¶ Figure 2.
¶ Table 1. Grain Nutrient Removal, Pounds Per Bushel (lb/bu) |
|
| Nitrogen, N | 0.67 ± 0.09 |
| Phosphorus, as P2O5 | 0.36 ± 0.7 |
| (as P) | (0.16 ± 0.03) |
| Potassium as K2O | 0.27 ± 0.04 |
| (as K) | (0.23 ± 0.04) |
| Magnesium, Mg | 0.07 ± 0.01 |
| Sulfur, S | 0.06 ± 0.01 |
¶ Table 2. Grain Nutrient Removal, Ounces Per Bushel (oz/bu) |
|
| Zinc, Zn | 0.020 ± 0.003 |
| Iron, Fe | 0.016 ± 0.002 |
| Manganese, Mn | 0.005 ± 0.001 |
| Copper, Cu | 0.003 ± 0.001 |
| Boron, B | 0.001 ± 0.001 |
¶ References
Bender, R.R., J. W. Haegele, and F. E. Below. 2013. Nutrient Uptake, Partitioning, and Remobilization in Modern, Transgenic Insect-Protected Maize Hybrids. Agrononmy Journal 105:161–170