Van Dyke, Adam; Johnson, Paul G.; Grossl, Paul R. | Influence of humic acid on water retention and nutrient uptake in simulated putting greens (2009 - USGA TERO) | R=151745 |
Van Dyke, Adam; Johnson, Paul G.; Grossl, Paul R. | Humic substances effect on moisture retention, nutrition, and color of intermountain west putting greens (2009 - USGA TERO) | R=145715 |
Van Dyke, Adam; Johnson, Paul G. | Influence of humic substances on moisture retention and phosphorus uptake of putting greens (2007Y1) | R=132616 |