Soil Nutrient Management
SOIL 4234
Soil Nutrient Management
Labs
Dr. Brian Arnall
Office: 373 Ag Hall
Phone: 405-744-1722
b.arnall@okstate.edu
| Compound | Solubility | |
| g/100ml | Valence | |
| KCl | 23.8 | K+ |
| CaCl | 74.5 | Ca++ |
| FeCl3 | 74.4 | Fe+++ |
| K2SO4 | 12 | K+ |
| CaSO4 * 2H2O | 0.24 | Ca++ |
| NaHCO3 | 6.9 | Na+ |
| K3PO4 | 90 | K+ |
| Ca5(PO4)3OH | 0.003 | Ca++ |
| MgCO3 | 0.179 | Mg++ |
| (NH4)2HPO4 | 57.5 | NH4+ |
| NH4H2PO4 | 22.7 | NH4+ |
| CaHPO4 | 0.002 | Ca++ |
| NH4NO3 | 118 | NH4+ |
| NH4HCO3 | 11.9 | NH4+ |
| CaCO3 | 0.0014 | Ca++ |
Results from the 09 Mobility Lab
N reference Strip Lab
NH3 Volatilization from Anhydrous
In-Field Soil Sampling Exercise and
HOMEWORK!!!!
Assignment Hint:
For Tables 2 and 3 for min, max, average recommendations use the
use soil test calculated values given, not average of vertical or by plot
recommendations.
N-P-Lime Teaching DEMO
YP and SBNRC
