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.
Cause. There are several different turf diseases that can cause brown patches in your lawn. Some turf diseases can be caused by feeding your lawn with the wrong type of fertiliser. Some diseases are encouraged by too much nitrogen in the soil.They are also encouraged if the soil is poorly nourished and or heavy with thatch.ause. There are several different turf diseases that can cause brown patches in your lawn. Some turf diseases can be caused by feeding your lawn with the wrong type of fertiliser. Some diseases are encouraged by too much nitrogen in the soil.