Transmission of Spring Dead Spot Disease of Bermudagrass by Turf/Soil Cores

Plant Disease ◽  
1986 ◽  
Vol 70 (9) ◽  
pp. 877 ◽  
Author(s):  
J. C. Pair
Keyword(s):  
Soil Cores ◽  
Spot Disease ◽  
Spring Dead Spot

Spring Dead Spot Disease of Bermudagrass and Its Control

1969 ◽  
Vol 72 (2) ◽  
pp. 203
Author(s):  
M. Q. Sayed ◽  
H. K. Droegemeier ◽  
M. J. Bohm
Keyword(s):  
Spot Disease ◽  
Spring Dead Spot

scholarly journals Spring Dead Spot of Buffalograss Caused by Ophiosphaerella herpotricha in Kansas and Oklahoma

Plant Disease ◽  
1999 ◽  
Vol 83 (2) ◽  
pp. 199-199 ◽  
Author(s):  
N. Tisserat ◽  
H. Wetzel ◽  
J. Fry ◽  
D. L. Martin
Keyword(s):  
Great Plains ◽  
Pcr Primers ◽  
The United States ◽  
Soil Cores ◽  
Chain Reaction ◽  
Soil Plug ◽  
Spring Dead Spot ◽  
Polymerase Chain ◽  
Ophiosphaerella Herpotricha ◽  
Species Specific

Buffalograss (Buchloe dactyloides) is widely planted in the Great Plains region of the United States as an amenity turfgrass. In May 1993, we observed circular dead spots in buffalograss lawns that were resuming growth following winter dormancy. The dead spots, 12 to 40 cm in diameter, were slowly filled in by buffalograss during the summer but reappeared in the same locations the following spring. Roots and stolons at the patch margins were colonized by darkly pigmented, ectotrophic fungal hyphae. Ophiosphaerella herpotricha, a cause of spring dead spot disease of bermudagrass (Cynodon spp.), was consistently isolated from diseased buffalograss roots collected in Kansas and Oklahoma. Identification of O. herpotricha was confirmed by the use of species-specific polymerase chain reaction (PCR) primers. To complete Koch's postulates, a 3-year-old stand of buffalograss cv. Sharp's Improved located in Manhattan, KS, was inoculated in September 1994 with O. herpotricha. Eleven soil cores, 10 cm in diameter × 8 cm deep, were removed at 1.2-m intervals across the turf. Five grams of oat seed infested with O. herpotricha (isolate KS221) wasadded to each hole and the soil plug was reinserted. For controls, 5 g of sterile oat seed was inserted in the bottom of each of 11 additional holes. No symptoms developed the following spring, but circular dead spots, ranging in size from 18 to 43 cm in diameter, were observed at 10 of 11 and 6 of 11 inoculation sites in May 1996 and 1997, respectively. No spots were noted in areas amended with sterile oats. O. herpotricha was consistently isolated from the roots at the margins of the patches. This is the first report of O. herpotricha causing spring dead spot in buffalograss.

Isoproturon movement and dissipation in undisturbed soil cores from a grassed buffer strip

Agronomie ◽  
2000 ◽  
Vol 20 (3) ◽  
pp. 297-307 ◽  
Author(s):  
Pierre Benoit ◽  
Enrique Barriuso ◽  
Philippe Vidon ◽  
Benoit Réal
Keyword(s):  
Soil Cores ◽  
Undisturbed Soil ◽  
Buffer Strip ◽  
Undisturbed Soil Cores

TWO NEW SEVERE LEAF SPOT DISEASE ON FOREST TREES OF JALGAON (MAHARASTRA) INDIA

2017 ◽  
Vol 23 (2) ◽  
Author(s):  
S. A. FIRDOUSI
Keyword(s):  
Leaf Spot ◽  
Fungal Disease ◽  
Leaf Spot Disease ◽  
Forest Trees ◽  
First Report ◽  
Spot Disease ◽  
Severe Leaf

During the survey of the forest fungal disease, of Jalgaon district, two severe leaf spot diseases on Lannae coromandelica and ( Ougenia dalbergioides (Papilionaceae) were observed in Jalgaon, forest during July to September 2016-17. The casual organism was identified as Stigmina lanneae and Phomopsis sp. respectively1-4,7. These are first report from Jalgaon and Maharashtra state.

Rapid Inoculation Technique and Biological Control of Leaf Spot Disease in Oil Palm

2019 ◽  
Vol 2 (1) ◽  
pp. 1-11 ◽  
Author(s):  
Delia Agustina ◽  
◽  
Cahya Prihatna ◽  
Antonius Suwanto ◽  
◽  
...  
Keyword(s):  
Biological Control ◽  
Oil Palm ◽  
Leaf Spot ◽  
Leaf Spot Disease ◽  
Inoculation Technique ◽  
Spot Disease

Spring Dead Spot and Burmudagrass Quality As Influenced by Nitrogen Source and Potassium

Crop Science ◽  
1991 ◽  
Vol 31 (6) ◽  
pp. 1674-1680 ◽  
Author(s):  
P. H. Dernoeden ◽  
J. N. Crahay ◽  
D. B. Davis
Keyword(s):  
Nitrogen Source ◽  
Spring Dead Spot
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