Occurrence of Stenocarpella macrospora Causing Ear Rot in Corn in the United States

2016 ◽  
Vol 17 (2) ◽  
pp. 152-154
Author(s):  
Martha P. Romero Luna ◽  
Carl A. Bradley ◽  
Heather M. Kelly ◽  
Kiersten A. Wise

Diplodia ear rot of corn is primarily caused by the fungus Stenocarpella maydis in the United States. Stenocarpella macrospora is a closely related fungus present in the U.S. but primarily associated with Diplodia leaf streak. S. macrospora is recognized as a major ear rot pathogen in South America and South Africa, but has infrequently been associated with ear rot in the U.S. This brief presents the first reports of Diplodia ear rot in Illinois and Tennessee. This is also the first confirmation of S. macrospora causing ear rot in the U.S. in over 60 years. Accepted for publication 19 May 2016. Published 15 June 2016.

Author(s):  
B. C. Sutton

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).


1978 ◽  
Vol 20 (2) ◽  
pp. 107-131 ◽  
Author(s):  
Richard B. Craig

The problems associated with drug abuse in the United States have received considerable attention in recent years. By the mid-1970s, approximately 500,000 Americans were addicted to heroin, while at least 15 million were regular or casual users of marijuana. None of this heroin originates domestically, and only a small percentage of the marijuana, and this of low potency, is home-grown. Consequently, the question of source has become cardinal to most analyses of drug use and abuse in the United States.Mexico has long been the primary source of high potency marijuana for the American market. Despite the recent influx from Jamaica and Colombia, Mexico still supplies an estimated 70% of the annual American consumption, or some 10 million pounds. More importantly, Mexico is currently the source of 70% to 80% of the heroin on the U.S. market, an alarming 6-8 ton annual figure. Furthermore, Mexico is both a primary transshipment route for cocaine, an increasingly popular drug originating in South America, and the source of vast quantities of psychotropic substances.


Worldview ◽  
1984 ◽  
Vol 27 (1) ◽  
pp. 12-14
Author(s):  
Robert Conway

U.S. policies can play a major part in influencing change in South Africa, but before this can occur there is much faulty thinking to correct. Traditional academic commentary on the matter prescribes for the U.S. the role of honest broker; indeed, the State Department often categorizes its own role in such terms. This is a myth that must be exploded immediately. The United States has too much at stake in the area; it can't pretend to be neutral or play the role of a third party mediator. It is a major partner.


1982 ◽  
Vol 12 (3-4) ◽  
pp. 37-45
Author(s):  
David F. Gordon

Despite continued American insistence that a negotiating impasse had not been reached, by the final months of 1982 it seemed clear that internationally-recognized independence for Namibia would not soon be achieved. While Washington claimed that negotiations between South Africa, Angola, and the Southwest African Peoples Organization (SWAPO) (with the U.S. as mediator) remain meaningful, there appears to have been a decisive move away from settlement. The latest round of negotiations, spearheaded by the United States as the leading element of the Western Contact Group (the U.S., the United Kingdom, France, West Germany, and Canada), has attempted to move South African-controlled Namibia to independence on the basis of Security Council Resolution 435 of September 1978.


1979 ◽  
Vol 9 (1-2) ◽  
pp. 42-46
Author(s):  
Michael Klare

Although the United States agreed to honor both the 1963 UN embargo on arms deliveries to South Africa and the 1966 arms embargo on Rhodesia, vast quantities of U.S. arms have been supplied to the two countries through a variety of clandestine and semi-legal channels. These deliveries have enabled the minority governments of Pretoria and Salisbury to intensify their control over the black majority and resist what they perceive as half-hearted calls for change on the part of U.S. officials.


1996 ◽  
Vol 24 (2) ◽  
pp. 46-47
Author(s):  
Rachel Rubin

Between the 1970s and 1990s, many whites, including myself, embraced antiapartheid work, partly because we were outraged at the horror of South Africa but also because it gave us a way to fight racism and do antiracism work here in the United States. I had always seen and disapproved of racism and from a very young age felt a need to fight against it. The anti-apartheid struggle gave me a solid way to do that. In the mid 70’s when I was in college, the campus that I was on was so segregated and the institutional policies so paternalistic and racist that there were very few forums for blacks and whites to work together. The first fully-fledge antiapartheid group at my university, which I joined on its inception, was established by an African-American who was a visiting artist on campus.


1997 ◽  
Vol 17 ◽  
pp. 242-262 ◽  
Author(s):  
Sandra Lee McKay

The scope of this paper is limited to an overview of mutilingualism in the U.S. from 1980 to the present. During this period, discussions of language diversity in the U.S. have been largely dominated by an effort to exert the hegemony of English. This effort has been brought on by changes in the demographic makeup of the U.S. population and supported by a commonly held belief that the economic strength of the U.S. in the international sphere is declining. A dramatic increase in the number of immigrants from Central and South America and the Pacific Rim, coupled with increasing economic competition from industrialized European and Asian nations, has resulted in widespread support for the exclusive use of English in the U.S. This emphasis on English is seen as a way to minimize the threat of the “foreign” influences that are believed to be undermining both the internal unity of the U.S., and its economic world dominance. Whereas nativism is nothing new in the U.S., its current intensity has been fueled by global aspects of migration and economic trade.


1972 ◽  
Vol 1 (01) ◽  
pp. 47-54
Author(s):  
Donald B. Agnew

My observations are drawn from an economic-feasibility study for additional cattle slaughtering plants in the Republic of Panama, including aspects of technology as well as location and scale, supply and competition, transportation and market outlets. The study was made early in 1972 during a short-term assignment to the U.S. AID mission in Panama. In making the Panama study I was able to avoid many inadequacies I had encountered in similar studies of proposed new cattle slaughter plants for economic development at various locations in the United States and South America. There were contrasts in these situations and a broader challenge in the Panama study.


Author(s):  
Marina E. Henke

This chapter focuses on the Korean War, which constituted the first instance of multilateral military coalition building in the post-World War II era. The U.S. government served as the pivotal state in this coalition-building effort. The chapter then looks at the deployment decisions of the three largest troop-contributing countries: the United Kingdom, Canada, and Turkey; the Philippines, a deeply embedded state with the United States in 1950; and South Africa, a weakly embedded state with the United States in 1950. The deployment decisions of the U.K. and Canada were the result of intense U.S. prodding involving a mixture of personal appeals, incentives, and threats. In this process, the U.S. government instrumentalized diplomatic networks to the greatest extent possible. Meanwhile, the Philippines was lured into the coalition via U.S. diplomatic embeddedness. Finally, in the case of South Africa, diplomatic embeddedness played no direct role. Rather, South Africa perceived the Korean War as an opportunity to gain from the U.S. long-desired military equipment, in particular military aircraft.


1893 ◽  
Vol 25 (3) ◽  
pp. 64-67 ◽  
Author(s):  
Nathan Banks

Since my last article ont his group Can.Ent., Aug.,1891), I have obtainded quite a number of forms; some of the new ones are described in this article. Two genera, new to the U.S., are recorded, both of which occur in South America. Chelifer alius, described by Leidy in Proc. Phil. Acad. Sci., 1877, agrees, as far as description goes, with Chelanosp oblongus, Say and with no other form known to me, therefore I consider it a synonym of C. oblongus.


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