Table 3.

Foliage color change of silver maple following treatments in June and July, 1987.

Treatment (n = 5)	initial color at 6/87	Color change^¹ at 9/87
Iron NutriBoosters	6.3	1.1a^²
(Ferric ammonium citrate injection)
Control	6.4	-0.2b

↵¹ Color change = final color - initial color
↵² Color change values followed by different letters are significantly different from each other (p .05) using Friedman's method for randomized blocks.