scholarly journals Stewart's Wilt Reactions of an International Collection of Zea mays Germ Plasm Inoculated with Erwinia stewartii

Plant Disease ◽  
2000 ◽  
Vol 84 (8) ◽  
pp. 901-906 ◽  
Author(s):  
Jerald K. Pataky ◽  
Lindsey J. du Toit ◽  
Noah D. Freeman
Keyword(s):  
United States ◽  
Germ Plasm ◽  
Sweet Corn ◽  
The United States ◽  
River Valley ◽  
Ohio River ◽  
Ohio River Valley ◽  
The World ◽  
The Mean ◽  
Stewart's Wilt

Maize accessions were evaluated in 1997, 1998, and 1999 to identify additional sources of Stewart's wilt resistance and to determine if reactions differed among accessions collected from various regions of the United States and throughout the world. The distributions of Stewart's wilt reactions rated from 1 (no appreciable spread of symptoms) to 9 (dead plants) were relatively similar among groups of accessions from all regions of the world except for those from the Mid-Atlantic/Ohio River Valley region of the United States, the southern United States, and the northeastern United States. The mean and median Stewart's wilt rating for 1,991 accessions evaluated in 1997 was 4. The mean Stewart's wilt rating for 245 accessions collected from the Mid-Atlantic/Ohio River Valley region was 3.1, which was significantly lower than that for accessions from all other regions. The mean rating for accessions from the southern United States was 3.7, which also was lower than mean ratings for accessions from all other regions. Ratings from trials in 1997 and 1998 were highly correlated (r = 0.87) for 292 accessions and 15 sweet corn hybrid checks evaluated in both years. Of 20 accessions rated below 2 in 1997 and 1998, seven were from Virginia, seven were from the Ohio River Valley or central Corn Belt of the United States, four were from the northern or western Corn Belt of the United States, and two were from Spain. Ratings for these accessions ranged from 1.7 to 3.1 in 1999. Ratings ranged from 2.6 to 3.7 for F1 hybrids of these accessions crossed with one of two susceptible sweet corn inbreds, CrseW30 or Crse16, which were rated 5.7 and 5.4, respectively. Based on the reactions of this collection of germ plasm, it appears that high levels of Stewart's wilt resistance are prevalent only among accessions collected from areas where the disease has been endemic for several years, whereas moderate levels of resistance can be found in accessions collected from nearly everywhere in the world.

Development of communication networks and water quality early warning detection systems at drinking water utilities in the Ohio river valley basin

2005 ◽  
Vol 52 (9) ◽  
pp. 235-242
Author(s):  
J.G. Schulte ◽  
A.H. Vicory
Keyword(s):  
United States ◽  
Water Quality ◽  
Drinking Water ◽  
Early Warning ◽  
The United States ◽  
River Valley ◽  
Water Utilities ◽  
Ohio River ◽  
Source Water ◽  
Ohio River Valley

Source water quality is of major concern to all drinking water utilities. The accidental introduction of contaminants to their source water is a constant threat to utilities withdrawing water from navigable or industrialized rivers. The events of 11 September, 2001 in the United States have heightened concern for drinking water utility security as their source water and finished water may be targets for terrorist acts. Efforts are underway in several parts of the United States to strengthen early warning capabilities. This paper will focus on those efforts in the Ohio River Valley Basin.

Sustainable management of the Ohio River (USA) by an interjurisdictionally represented commission

1995 ◽  
Vol 32 (5-6) ◽  
pp. 193-200 ◽  
Author(s):  
Alan H. Vicory ◽  
Peter A. Tennant
Keyword(s):  
United States ◽  
Water Quality ◽  
Sustainable Management ◽  
Water Quality Monitoring ◽  
The United States ◽  
River Valley ◽  
United States Government ◽  
Ohio River ◽  
Ohio River Valley ◽  
Major River

In 1948 the Ohio River Valley Water Sanitation Commission (ORSANCO) was established to abate pollution of a major river basin in the United States. The commission consists of representatives of eight states in the Ohio River Valley and the United States Government. The necessity of such an interstate commission, representing multiple jurisdictions, reflects the nature of the Ohio River which is approximately 1,580 km in length, transverses six states, and is extensively used for public and industrial water supply, wastewater disposal, transportation, power generation and recreation. ORSANCO's programmes include coordination and communication, setting and enforcing wastewater discharge standards, operating key water quality monitoring programmes for the Ohio River and major tributaries, data assessments and studies to evaluate problems and programmes for remediation, and monitoring when spills occur. The Commission's approach to achieving improved water quality, while at the same time balancing the needs of the users of the river, is accomplished by successfully involving and integrating the various interests in river management (governmental agencies, industry, public utilities, other river users and the general public) into its programme planning and implementation. Thus an intergovernmental agency which encourages co-operation with non-governmental entities can be an effective approach to sustainable management of a major river.

scholarly journals A Two-Tier Statistical Forecast Method for Agricultural and Resource Management Simulations

2008 ◽  
Vol 47 (6) ◽  
pp. 1573-1589 ◽  
Author(s):  
Steven A. Mauget ◽  
Jonghan Ko
Keyword(s):  
United States ◽  
Gulf Coast ◽  
Southern Oscillation ◽  
Winter Season ◽  
River Valley ◽  
Ohio River ◽  
Ohio River Valley ◽  
Central United States ◽  
Phase Systems ◽  
Simple Phase

Abstract Simple phase schemes to predict seasonal climate based on leading ENSO indicators can be used to estimate the value of forecast information in agriculture and watershed management, but may be limited in predictive skill. Here, a simple two-tier statistical method is used to hindcast seasonal precipitation over the continental United States, and the resulting skill is compared with that of ENSO phase systems based on Niño-3 sea surface temperature anomaly (SSTA) and Southern Oscillation index (SOI) persistence. The two-tier approach first predicts Niño-3 winter season SSTA, and then converts those predictions to categorical precipitation hindcasts via a simple phase translation process. The hindcasting problem used to make these comparisons is relevant to winter wheat production over the central United States. Thus, given the state of seasonal SOI and Niño-3 indicators defined before August, the goal is to predict the tercile category of the following November–March precipitation. Generally, it was found that the methods based on either predicted or persisted winter Niño-3 conditions were skillful over areas where ENSO affects U.S. winter precipitation—that is, the Southeast and the Gulf Coast, Texas, the southern and central plains, the Southwest, Northwest, and the Ohio River valley—and that the two-tier approach based on predicted Niño-3 conditions was more likely to provide the best skill. Skill based on SOI persistence was generally lower over many of those regions and was insignificant over broad parts of the central and southwest United States, but did lead the other methods over the Ohio River valley and the northwest. A more restrictive test of leading hindcast skill showed that the skill advantages of the two-tier approach over the central and western United States were not substantial, and mainly highlighted SOI persistence’s lack of skill over the central United States and leading skill over the Ohio River valley. However, two-tier hindcasts based on neural-network-predicted Niño-3 SSTA were clearly more skillful than both ENSO phase methods over areas of the Southeast. It is suggested that the relative skill advantage of the two-tier approach may be due in part to the use of arbitrary thresholds in ENSO phase systems.

scholarly journals Climate of the weakly-forced yet high-impact convective storms throughout the Ohio River Valley and Mid-Atlantic United States

2018 ◽  
Vol 52 (9-10) ◽  
pp. 5709-5721 ◽  
Author(s):  
Binod Pokharel ◽  
S.-Y. Simon Wang ◽  
Jonathan Meyer ◽  
Robert Gillies ◽  
Yen-Heng Lin
Keyword(s):  
United States ◽  
High Impact ◽  
River Valley ◽  
Ohio River ◽  
Ohio River Valley ◽  
Convective Storms

scholarly journals Influence of Ohio River valley emissions on fine particle sulfate measured from aircraft over large regions of the eastern United States and Canada during INTEX-NA

2006 ◽  
Vol 111 (D24) ◽  
Author(s):  
Christopher J. Hennigan ◽  
Scott Sandholm ◽  
Saewung Kim ◽  
Robert E. Stickel ◽  
L. Gregory Huey ◽  
...  
Keyword(s):  
United States ◽  
Fine Particle ◽  
River Valley ◽  
Ohio River ◽  
Ohio River Valley ◽  
Eastern United States

IODIDE METABOLISM IN ONTARIO

1967 ◽  
Vol 54 (4) ◽  
pp. 604-608 ◽  
Author(s):  
Fred Rosen ◽  
Calvin Ezrin ◽  
Robert Volpé
Keyword(s):  
United States ◽  
North America ◽  
Renal Clearance ◽  
Young Women ◽  
The United States ◽  
Iodized Salt ◽  
Endemic Goitre ◽  
Iodide Uptake ◽  
The World ◽  
The Mean

ABSTRACT Various parameters of inorganic iodide metabolism have been measured in a group of 22 healthy young women in a previous endemic goitre region of Ontario. The mean plasma inorganic iodide (PII) was comparable to values obtained in North America and Iceland, but higher than those in Scotland. The increased utilization of iodized salt in North America is thought to be responsible for this difference, and for the reduced incidence of endemic goitre. The thyroidal radioiodine clearance tended to be low (10.1 ml/min), but the absolute iodide uptake (AIU) was comparable to values obtained in the United States. The renal clearance of radioiodine was 30.0 ml/min. This compares well with values reported from around the world.

Simon Flexner, 1863-1946

1949 ◽  
Vol 6 (18) ◽  
pp. 408-445 ◽  
Keyword(s):  
United States ◽  
New York ◽  
New Orleans ◽  
Yellow Fever ◽  
The United States ◽  
Ohio River ◽  
Jewish Family ◽  
French Quarter ◽  
The World ◽  
Set Up

If Simon Flexner had been asked to classify himself, beyond doubt he would have deemed his place to lie amongst the most factual of men; for always he concerned himself with immediate situations and his logic was severe. He had no use for prophecy, and visionaries he could not understand. Yet he had vision of the sharpest, seeing the future implicit in the present; and he acted upon what he saw. From youth, as if with foreknowledge, he made himself ready for the needs of a coming time, moulding himself for its purposes, almost in detail. Flexner derived from an erudite Jewish family who were living in Bohemia when his father, then a boy, was sent off for education to an uncle, a rabbi in Strasbourg. There Morris Flexner grew up and for a brief while taught school before emigrating to the United States in 1853. Landing in New York he pressed on to New Orleans with two companions, to find opportunities in the French quarter; but instead they were found by yellow fever and within a few weeks Flexner alone was left alive. He lost no time in making his way up the Ohio River to the good climate of Kentucky, already a well-settled state, as the occupation he perforce took up sufficiently shows; for he became a peddler, tramping from house to house. Soon he was providing wares to other peddlers, and within a few years had become a merchant in hats at wholesale and was able to marry. His wife had grown up in Alsace and learnt dressmaking in Paris before journeying to relatives in Louisville, where she and Morris Flexner now set up their home. They both had been soundly taught by the world, possessed enterprise and acumen, and were familiar with the languages and ways of France and Germany. Simon was born in 1863, the fourth of nine children. The panic of 1873 wiped out his father’s business, and his parents almost gave over the hope to educate their children for the professions. It is a measure of their despair that one day Simon’s father, downcast and silent, led him by the hand to the neighbourhood plumber and offered him as apprentice. But so meagre was the ten-year boy that the plumber after one glance said no. This was ‘S. F.’s’ own story, told long after at an august dinner in his honour, to relieve an occasion which bore on him hard.

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