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).

Treat-
ment		 P K Ca Mg S Fe Cu Zn Mn Na
'06 '07 '06 '07 '06 '07 '06 '07 '06 '07 '06 '07 '07
(%) (mg/kg)
Control 0.43ax 0.43a 1.4a 1.2a 0.74a 0.75a 0.26a 0.29a 0.32a 0.31a 234a 523a 9.6a 30a 31a 55a
Humic
acid		 0.41b 0.42a 1.5a 1.1a 0.69a 0.68a 0.26a 0.28a 0.29b 0.29a 214a 421a 9.5a 27a 27a 51a

 x Means within same column with same letter are not different significantly P = 0.05.






© 2008 Plant Management Network.