scholarly journals Diagnosis of Common Root Rot of Wheat and Barley

2003 ◽  
Vol 4 (1) ◽  
pp. 11 ◽  
Author(s):  
D. E. Mathre ◽  
R. H. Johnston ◽  
W. E. Grey
Keyword(s):  
Host Range ◽  
Geographic Distribution ◽  
Root Rot ◽  
Common Root ◽  
Common Root Rot ◽  
The Common ◽  
And Storage ◽  
Symptoms And Signs ◽  
Methods Of Isolation

Diagnosis of common root rot of wheat and barley is discussed in detail, including its symptoms and signs, host range, taxonomy, and geographic distribution, as well as methods of isolation, identification, and storage of the common root rot pathogen. Accepted for publication 17 July 2003. Published 19 August 2003.

Detection and Identification of Botrytis Species Associated with Neck Rot, Scape Blight, and Umbel Blight of Onion

2006 ◽  
Vol 7 (1) ◽  
pp. 38 ◽  
Author(s):  
Martin I. Chilvers ◽  
Lindsey J. du Toit
Keyword(s):  
Host Range ◽  
Geographic Distribution ◽  
Detection And Identification ◽  
And Storage ◽  
Symptoms And Signs ◽  
Methods Of Isolation

Diagnosis of detection and identification of Botrytis species associated with neck rot, scape blight, and umbel blight of onion are discussed in detail, including the disease's symptoms and signs, host range, taxonomy, and geographic distribution, as well as methods of isolation, identification (including macroscopic vs. microscopic characteristics), and storage of the pathogens. Accepted for publication 7 August 2006. Published 27 November 2006.

Sudden Oak Death and Associated Diseases Caused by Phytophthora ramorum

2003 ◽  
Vol 4 (1) ◽  
pp. 12 ◽  
Author(s):  
J. M. Davidson ◽  
S. Werres ◽  
M. Garbelotto ◽  
E. M. Hansen ◽  
D. M. Rizzo
Keyword(s):  
Host Range ◽  
Geographic Distribution ◽  
Leaf Blight ◽  
Phytophthora Ramorum ◽  
Sudden Oak Death ◽  
Associated Diseases ◽  
And Storage ◽  
Symptoms And Signs ◽  
Methods Of Isolation

Diagnosis of Sudden Oak Death, ramorum leaf blight, and ramorum shoot dieback on a wide variety of hosts are discussed in detail, including the symptoms and signs, host range, taxonomy, and geographic distribution, as well as methods of isolation, identification, and storage of Phytophthora ramorum, the pathogen which causes Sudden Oak Death. Accepted for publication 6 June 2003. Published 7 July 2003.

Gray Leaf Spot of Perennial Ryegrass

2003 ◽  
Vol 4 (1) ◽  
pp. 10 ◽  
Author(s):  
Philip F. Harmon ◽  
Richard Latin
Keyword(s):  
Host Range ◽  
Lolium Perenne ◽  
Geographic Distribution ◽  
Perennial Ryegrass ◽  
Magnaporthe Oryzae ◽  
Leaf Spot ◽  
Gray Leaf Spot ◽  
And Storage ◽  
Symptoms And Signs ◽  
Methods Of Isolation

Diagnosis of gray leaf spot (caused by Magnaporthe oryzae) of perennial ryegrass (Lolium perenne) is discussed in detail, including the disease's symptoms and signs, host range, taxonomy, and geographic distribution, as well as methods of isolation, identification, and storage of M. oryzae. Accepted for publication 29 January 2003. Published 10 March 2003.

Nocardiopsis dassonvillei strain MB22 from the Algerian Sahara promotes wheat seedlings growth and potentially controls the common root rot pathogen Bipolaris sorokiniana

2019 ◽  
Vol 101 (4) ◽  
pp. 1115-1125 ◽  
Author(s):  
Khadidja Allali ◽  
Yacine Goudjal ◽  
Miyada Zamoum ◽  
Khaoula Bouznada ◽  
Nasserdine Sabaou ◽  
...  
Keyword(s):  
Root Rot ◽  
Bipolaris Sorokiniana ◽  
Common Root ◽  
Wheat Seedlings ◽  
Common Root Rot ◽  
Algerian Sahara ◽  
The Common

THE OCCURRENCE OF FUSARIUM SPECIES IN CANADA: V. TAXONOMY AND GEOGRAPHIC DISTRIBUTION OF FUSARIUM SPECIES IN SOIL

1956 ◽  
Vol 34 (6) ◽  
pp. 833-846 ◽  
Author(s):  
W. L. Gordon
Keyword(s):  
Geographic Distribution ◽  
Root Rot ◽  
Fusarium Species ◽  
Soil Samples ◽  
Taxonomic Study ◽  
Common Root ◽  
Common Root Rot ◽  
Prevalent Species ◽  
Soil Dilution

A taxonomic study was made of 1348 isolates of Fusarium found in 206 soil samples collected in 1946. Approximately 70% of the samples, or 143, were obtained from 127 localities in Manitoba; the remaining 30%, or 63, came from seven other provinces.Of 25,973 colonies of fungi that developed on the 2060 soil-dilution plates involved in this study, Fusarium accounted for approximately 5%. A total of 14 species and varieties of Fusarium, classified in nine sections of the genus, were isolated; they are F. merismoides Cda., F. poae (Pk.) Wr., F. sporotrichioides Sherb., F. avenaceum (Fr.) Sacc., F. semitectum Berk. & Rav., F. acuminatum Ell. & Ev., F. equiseti (Cda.) Sacc., F. culmorum (W. G. Sm.) Sacc., F. sambucinum Fuckel, F. sambucinum var. coeruleum Wr., F. moniliforme Sheld. emend. S. & H., F. oxysporum Schlecht. emend. S. & H., F. oxysporum var. redolens (Wr.) Gordon, F. solani (Mart.) App. & Wr. emend. S. & H. F. oxysporum, F. oxysporum var. redolens, F. equiseti, and F. solani accounted for approximately 90% of the total Fusarium isolates. F. oxysporum was by far the most prevalent species isolated. With the exception of F. merismoides, all of the species isolated were found previously to be seed-borne by cereals and to be associated with common root rot of those crops.

scholarly journals Efficacy of Bacillus SPP. strains against barley diseases caused by Bipolaris Sorokiniana on cultivars of different resistance

2020 ◽  
Vol 11 (4) ◽  
Author(s):  
L. O. Kriuchkova ◽  
◽  
T. I. Patyka ◽  
Keyword(s):  
Root Rot ◽  
Bipolaris Sorokiniana ◽  
Spot Blotch ◽  
Growth Media ◽  
Common Root ◽  
Common Root Rot ◽  
Medium Resistance ◽  
Bacillus Spp ◽  
The Common ◽  
Bacillus Strains

The effect of Bacillus strains, B. subtilis 16 and B. pumilus 11, on two barley diseases caused by Bipolaris sorokiniana (Sacc.) Shoemaker has been studied. It was found that the activity depends on both the resistance of the cultivar against disease and the bacterial strain. The severity of spot blotch of barley decreased significantly when the cell suspension of B. subtilis strain16 was sprayed on the leaves of disease-susceptible cultivars Nashсhadok, but failed to inhibit the disease on the leaves of resistant cultivars. Applying the cell suspensions into plant growth media significantly inhibited the common root rot on susceptible cultivar Syaivo, which, however, was not accompanied by an increase in the biomass of seedlings. A significant increase in the weight of shoots and roots of seedlings was observed on cultivars with medium resistance to the disease: Sebastian and Antey.

Pink Hibiscus Mealybug Identification

2006 ◽  
Vol 7 (1) ◽  
pp. 43 ◽  
Author(s):  
Amanda Hodges ◽  
Greg Hodges
Keyword(s):  
Host Range ◽  
Geographic Distribution ◽  
Pink Hibiscus Mealybug ◽  
Symptoms And Signs ◽  
Methods Of Isolation

Identification of pink hibiscus mealybug is discussed in detail, including its symptoms and signs, host range, taxonomy, and geographic distribution, as well as methods of isolation, identification, and preservation. Accepted for publication 18 March 2006. Published 14 April 2006.

Geographic distribution of common root rot and Bipolaris sorokiniana in Queensland wheat soils

1986 ◽  
Vol 26 (5) ◽  
pp. 601 ◽  
Author(s):  
GB Wildermuth
Keyword(s):  
Geographic Distribution ◽  
Lower Incidence ◽  
Root Rot ◽  
Bipolaris Sorokiniana ◽  
Common Root ◽  
The South ◽  
Common Root Rot ◽  
Winter Cereals ◽  
Central Highlands

A survey to determine the geographic distribution of common root rot in Queensland wheatgrowing areas was conducted in 1978, 1979 and 1980. In 1980, soil populations of Bipolaris sorokiniana were determined from the areas where common rot was assessed. Common root rot was found in all areas and was most severe in the South-western Downs, Western Downs and Northern Darling Downs and least severe in the Central Highlands. Incidence of common root rot over all areas changed from 77% in 1978, to 65% in 1979, and to 56% in 1980. This was mostly due to a reduction from 91 to 44% on the Darling Downs. The lower incidence in 1979 and 1980 was thought to be associated with lower rainfall in those years and in some areas with an increase in rotation to crops other than winter cereals. Severity of common root rot was significantly lower only in 1979. In general, the severity of common root rot in Queensland was higher than that recorded in Canada and lower than that recorded in Brazil. Soil populations of B. sorokiniana varied from 0 to 320 propagules per gram of soil with an overall mean of 58. They were highest in the Western and Southwestern Downs, and lowest in the Central Highlands. In general, the size of the populations were less than those recorded elsewhere.

Isolation, Identification, and Pathogenicity of Phytophthora Blight of Pigeonpea

2018 ◽  
Vol 19 (3) ◽  
pp. 233-236
Author(s):  
Mamta Sharma ◽  
Raju Ghosh
Keyword(s):  
Geographic Distribution ◽  
Phytophthora Blight ◽  
Causal Organism ◽  
Diagnosis And Management ◽  
And Storage ◽  
Symptoms And Signs ◽  
Methods Of Isolation

Phytophthora blight is an emerging threat in pigeonpea. This article briefly discusses diagnosis of Phytophthora blight on pigeonpea including the symptoms and signs, taxonomy, and geographic distribution. Methods of isolation, identification, and storage of Phytophthora cajani (causal organism of Phytophthora blight) are also discussed. This information will be useful to all researchers involved in the diagnosis and management of Phytophthora blight of pigeonpea.

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