Puccinia sorghi. [Descriptions of Fungi and Bacteria].

1964 ◽  
Author(s):  
G. F. Laundon
Keyword(s):  
United States ◽  
South Africa ◽  
Zea Mays ◽  
Geographical Distribution ◽  
United States Of America ◽  
The United States ◽  
Artificial Inoculation ◽  
Puccinia Sorghi ◽  
Puccinia Polysora ◽  
The Tropics

Abstract A description is provided for Puccinia sorghi. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Pycnia and aecia on some 30 species of Oxalis including O. corniculata (some of these by artificial inoculation only). Uredia and telia on Euchlaena mexicana, E. perennis and Zea mays. DISEASE: Rust of maize causing chlorosis and death of leaves and leaf sheaths. GEOGRAPHICAL DISTRIBUTION: The aecial infection is limited in distribution to temperate regions in Europe, the United States of America, Mexico and South Africa, with one record from Nepal (C.P. News 7: 59, 1961). The uredial and telial stages are practically co-extensive with the distribution of their hosts (CMI Map 279). In the tropics it is less common than Puccinia polysora below 4, 000 feet. TRANSMISSION: By air (Phytopathology 47: 101-7), by seed (Reyes, Philippine J. Agric. 18: 115-128; 1953) and probably also by infected or contaminated material.

scholarly journals The colonial matrix of power: Image ontology and the question of blackness

2021 ◽  
Vol 77 (4) ◽  
Author(s):  
Itumeleng D. Mothoagae
Keyword(s):  
United States ◽  
South Africa ◽  
United States Of America ◽  
Black People ◽  
World Order ◽  
The United States ◽  
Global South ◽  
Black Theology ◽  
The Social ◽  
The World

The question of blackness has always featured the intersectionality of race, gender, sexuality and class. Blackness as an ontological speciality has been engaged from both the social and epistemic locations of the damnés (in Fanonian terms). It has thus sought to respond to the performance of power within the world order that is structured within the colonial matrix of power, which has ontologically, epistemologically, spatially and existentially rendered blackness accessible to whiteness, while whiteness remains inaccessible to blackness. The article locates the question of blackness from the perspective of the Global South in the context of South Africa. Though there are elements of progress in terms of the conditions of certain Black people, it would be short-sighted to argue that such conditions in themselves indicate that the struggles of blackness are over. The essay seeks to address a critique by Anderson (1995) against Black theology in the context of the United States of America (US). The argument is that the question of blackness cannot and should not be provincialised. To understand how the colonial matrix of power is performed, it should start with the local and be linked with the global to engage critically the colonial matrix of power that is performed within a system of coloniality. Decoloniality is employed in this article as an analytical tool.Contribution: The article contributes to the discourse on blackness within Black theology scholarship. It aims to contribute to the continual debates on the excavating and levelling of the epistemological voices that have been suppressed through colonial epistemological universalisation of knowledge from the perspective of the damnés.

Diplodia maydis. [Descriptions of Fungi and Bacteria].

1966 ◽  
Author(s):  
B. C. Sutton
Keyword(s):  
United States ◽  
South Africa ◽  
Zea Mays ◽  
South America ◽  
Geographical Distribution ◽  
Ear Rot ◽  
Seedling Blight ◽  
Stalk Rot ◽  
Maize Roots ◽  
Stenocarpella Maydis

Abstract A description is provided for Diplodia maydis[Stenocarpella maydis]. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Zea mays. Also on Arundinaria sp. DISEASES: Stalk rot, white ear rot, and seedling blight of maize. Roots may also become infected. GEOGRAPHICAL DISTRIBUTION: Africa (Congo, Kenya, Malawi, Rhodesia, South Africa, Tanzania); Asia (India); Australasia (Australia); Europe (U.S.S.R.), North America (Canada, Mexico, United States); South America (Argentina, Brazil, Colombia).

scholarly journals Burrow casts from the Lystrosaurus-Procolophon Assemblage-zone, Karoo Sequence, South Africa

Koedoe ◽  
1991 ◽  
Vol 34 (1) ◽  
Author(s):  
G.H. Groenewald
Keyword(s):  
United States ◽  
South Africa ◽  
United States Of America ◽  
The United States ◽  
Climatic Conditions ◽  
Desiccation Cracks ◽  
Assemblage Zone

Five types of burrow casts from the Lystrosaurus- Procolophon Assemblage-zone (Palingkloof Member and Katberg Formation, Triassic, Karoo sequence. South Africa) are associated with casts of desiccation cracks and red mudstone. Vertebrate remains of Lystrosaurus sp. and Procolophon sp. indicate that these animals probably made the burrows during the Triassic. It is possible that burrowing was an adaptive advantage during periods of severe and unfavourable climatic conditions. Similar burrow casts were found in the Dicynodon-Theriognathus Assemblage-zone, suggesting a burrowing habit for fauna represented in this zone. In structure, the burrow casts resemble those of Scoyenia, Thalassinoides, Histioderma, Gyrolithes and Planolites reported from Germany, France, Asia, Ireland, Spain and the United States of America.

Sign in / Sign up

Export Citation Format

Share Document