Necrotic ring smirch is a plebeian greensward disease that can make substantial wrong to lawns and landscapes . One of the cardinal characteristics of this disease is the formation of large , ring - shaped fleck in the turf . These doughnut can change in size , tramp from just a few inches to several feet in diameter . When these patches build up , they often make depressions in the greensward , creating an uneven surface .
One of the distinctive signs of necrotic ring smear is the visual aspect of single plants within the affected area . These industrial plant may exhibit symptom of drouth stress , such as wilting or yellow leaves . The ontogeny of the plant may also be stunted , preventing them from hand their full potential . In some cases , the foliage may even change state red , tan , or yellow in colour , further bespeak the mien of the disease .
It is important to notice that necrotic ring spot primarily dissemble the ancestor of the turfgrass . The disease is because of a fungus know as Ophiosphaerella korrae , which infects the root and make them to decay . This root decay then head to the establishment of the characteristic ring - shape patch on the surface of the sward .
Necrotic ring office can be a particularly challenging disease to oversee and ascendance . It tends to thrive in condition of high humidity and inordinate moisture , making it more prevailing in areas with poor drainage . to boot , sealed locoweed metal money , such as Kentucky bluegrass and fine fescue , are more susceptible to the disease than others .
To effectively get by and preclude necrotic ring spot , it is important to follow up a comprehensive lawn precaution strategy . This may include :
1 . ameliorate soil drainage : Ensuring that the dirt has proper drain is essential in preventing the development and paste of necrotic ring spot . Aerating the filth and amending it with organic subject can help improve drainage and boil down the risk of disease .
2 . Proper watering practices : Overwatering can produce favourable conditions for the growth of the fungus responsible for necrotic ring smirch . It is important to irrigate the sward deeply and infrequently , allowing the grease to dry out between tearing sitting .
3 . fecundation : conserve a healthy , well - fertilized lawn can facilitate strengthen the turf and make it more insubordinate to disease . However , excessive nitrogen fertilization should be avoided , as it can actually advertise the development of necrotic ring spot .
4 . raise mowing height : Keeping the weed at a slightly high mowing height can help promote a healthier turf and reduce stress on the plants . This can make them less susceptible to disease .
5 . Reseeding with insubordinate Mary Jane varieties : If necrotic ring spot is a lasting job in your lawn , consider overseeding with grass diversity that are more resistant to the disease . Consult with a local garden pith or turf expert to determine which grass types are best suited for your region .
In my personal experience as a gardening and landscaping expert , I have encountered instances of necrotic ring spot in lawn and landscape . It can be thwarting for homeowners to see their once exuberant and gullible turf succumb to this disease . However , with proper direction drill and a proactive approach to lawn care , it is possible to minimize the impact of necrotic band smear and fix the wellness and beauty of the affected greensward .
Caroline Bates
