Slow release fertilizers should be used only during active growth periods. Do not apply a full years fertilizer requirement in one application. K is beneficial for food storage, root growth, and minimizing many plant stress factors. Iron containing fertilizers are beneficial in promoting good turf color, without the excess growth sometimes experienced with nitrogen containing fertilizers. Ferrous sulphate is inexpensive, but may be short-lived in our high pH western soils.
Cheleated irons are more effective but more expensive and are used on high profile turfs.
This site was developed for the Arizona Cooperative Extension , College of Agriculture , The University of Arizona . The University of Arizona. All contents copyrighted. All rights reserved.