Table 5 from:
Van Dyke, A., Johnson, P. G., and Grossl, P. R. 2008. Humic substances effect on moisture retention and phosphorus uptake in intermountain west putting greens. Online. Applied Turfgrass Science doi:10.1094/ATS-2008-1006-01-RS.
Table 5. Effect of humic acid application on tissue nutrient concentration of creeping bentgrass at the USU research putting green in 2006 and 2007 ('06 and '07).
x Means within same column with same letter are not different significantly P = 0.05.
© 2008 Plant Management Network.