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When an area of the creeping bentgrass is affected, large dead spots in the turf are seen. [2] These symptoms are most often observed in the summer months when soil and surface temperatures are high. Because Pythium volutum is a root rotting pathogen, the ability of the creeping bentgrass to intake water is inhibited. When soil and surface ...
Some grubs pack a triple whammy. They infest plant roots. Predators shred the lawn for grubs. And those that become Japanese beetles ravage plants.
Dollar spot is most commonly found on closely mowed turfgrasses. The pathogen infects most cool and warm-season grasses throughout the world, including creeping bentgrass (Agrostis stolonifera), annual bluegrass (Poa annua), Kentucky bluegrass (Poa pratensis), perennial ryegrass (Lolium perenne), hybrid bermudagrasses (Cynodon dactylon x tranvaalensis), seashore paspalum (Paspalum vaginatum ...
Ophiosphaerella korrae, Ophiosphaerella narmari, and Ophiosphaerella herpotricha affect bermudagrass (Cynodon species), while the latter fungus also causes dead spot in buffalo grass (Bouteloua dactyloides). Ophiosphaerella korrae is a cause of necrotic ring spot in creeping red fescue (Festuca rubra). [3]
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Necrotic ring spot is a common disease of turf caused by soil borne fungi (Ophiosphaerella korrae) that mainly infects roots (4).It is an important disease as it destroys the appearance of turfgrasses on park, playing fields and golf courses.
When lettuce is infected with INSV, it shows a number of symptoms, such as yellowing leaves, dead spots, and stunted growth. On the inner leaves there are patterns of necrosis and chlorosis. At the base of the ribs of infected lettuce plants there is significant necrosis and lesions. The necrotic tissue can look brown to dark brown.
Here are the steps to take if number one is doing a number on your grass.