Inside and outside views of the geode. Geode (Greek Î³ÎµÏÎ´Î·Ï - ge-ÅdÄs, earthlike) are geological secondary structures which occur in certain sedimentary and volcanic rocks. They are themselves of sedimentary origin formed by chemical precipitation.
The Rhizoctonia solani fungus attacks zoysia grass and causes a disorder called large brown patch. Small, rounded spots of discolored, water-soaked grass appear on zoysia lawns.These damaged areas often have a yellowish ring of dying grass around their perimeters.oysia is a species of warm-weather grass native to Southeast Asia. Named after Karl von Zois, an 18th-century botanist from Austria, zoysia became popular with United States homeowners in the 1940s and 1950s, particularly in the southern United States, because these grasses perform well in warm climates.
Though brown spots are one red flag indicating a problem, many other symptoms accompany spotted grass blades. Identify how to prevent infection and properly care for your zoysia grass, as well as appropriate control methods, for a healthy, vigorous home lawn.atural Control. Remove and destroy affected grass after mowing to prevent disease spread. When mowing grass, use a sharp mower blade instead of a dull one; dull blades don't make a clean cut and create wounds that fungi can easily invade.