Table 2 - Iron Chlorosis | Utah State University Extension

Advantages and disadvantages of iron chlorosis control methods.

Method	Advantages	Disadvantages
Soil application: Iron sulfate-elemental sulfur	Lasts up to several years Relatively inexpensive No injury to plant Simple procedure	Slow response Results sometimes variable Too expensive for large areas of low-value crops Can be labor-intensive
Soil application: Iron chelates	Simple procedure Generally no injury to plant Relatively quick response	May last less than one season Expensive Results sometimes variable
Foliar application: Chelates or iron sulfate	Quick response Fairly simple, easy procedure (except for large trees)	Only practical method for field crops Expensive on trees Can cause temporary leaf burning Often lasts less than one season
Trunk injection or implantation	Lasts up to several years Moderate expense	Injures tree's trunk Can't be used on shrubs or non-woody plants Results sometimes variable Can cause temporary leaf burning Somewhat complicated procedure

Updated 7/15/02