scholarly journals General weather conditions and precipitation contributing to the 2011 flooding in the Mississippi River and Red River of the North Basins, December 2010 through July 2011: Chapter B in 2011 floods of the central United States

2013 ◽  
pp. i-22 ◽  
Author(s):  
Kevin C. Vining ◽  
Katherine J. Chase ◽  
Gina R. Loss
Keyword(s):  
United States ◽  
Mississippi River ◽  
Weather Conditions ◽  
Red River ◽  
The North ◽  
Central United States

Life History and Behaviour of the Armyworm, Pseudaletia unipuncta (Haw.) (Lepidoptera: Noctuidae), in Eastern Ontario

1961 ◽  
Vol 93 (12) ◽  
pp. 1141-1153 ◽  
Author(s):  
J. C. Guppy
Keyword(s):  
United States ◽  
Mississippi River ◽  
The United States ◽  
Pseudaletia Unipuncta ◽  
North American Continent ◽  
The North ◽  
Central United States ◽  
Important Pest ◽  
Lepidoptera Noctuidae ◽  
Eastern Half

The armyworm, Pseudaletia unipuncta (Haw.), has been an important pest of grasses in North America for many years, largely in the eastern half of the Continent, from the more southerly regions of Canada to the southern United States. The larvae skeletonize rhe surface of the leaf blades or rhe inner surface of the sheaths during the early instars, and later feed from the margins of the leaves, consuming all the tissues. The inflorescence is seldom damaged unless leaf foliage is scarce but in some grasses, notably timothy, the green heads are often readily consumed by the older larvae even when foliage is abundant. Normally, populations of the armyworm are small, attracting little attention, but at irregular intervals of five to 20 years widespread outbreaks have occured simultaneously in Canada and the united States; eight such outbreaks have been recorded since 1860. In some of the intervening years smaller and more localized outbreaks have occurred. During the outbreak, damage to forage grasses and cereal crops has been so severe that the armyworm constitutes one of the most important insects attacking these crops. The latest great outbreak occurred on the North American Continent in 1954; this was preceded by a smaller but severe attack in 1953, largely in the central United States east of the Mississippi River. In Canada, in 1954, all the provinces from eastern Saskatchewan to Newfoundland were involved.

scholarly journals Genetic Variation of Sclerotinia sclerotiorum from Multiple Crops in the North Central United States

PLoS ONE ◽  
2015 ◽  
Vol 10 (9) ◽  
pp. e0139188 ◽  
Author(s):  
Laura Aldrich-Wolfe ◽  
Steven Travers ◽  
Berlin D. Nelson
Keyword(s):  
United States ◽  
Genetic Variation ◽  
Sclerotinia Sclerotiorum ◽  
North Central ◽  
The North ◽  
Central United States

Relation of algal biovolume to chlorophyll a in selected lakes and wetlands in the north-central United States

1995 ◽  
Vol 52 (2) ◽  
pp. 416-424 ◽  
Author(s):  
James W. LaBaugh
Keyword(s):  
United States ◽  
North Dakota ◽  
Chlorophyll A ◽  
Linear Relation ◽  
Algal Biomass ◽  
Open Water ◽  
Light Penetration ◽  
North Central ◽  
The North ◽  
Central United States

Algal chlorophyll a is commonly used as a surrogate for algal biomass. Data from three lakes in western Nebraska, five wetlands in north-central North Dakota, and two lakes in north-central Minnesota represented a range in algal biovolume of over four orders of magnitude and a range in chlorophyll a from less than 1 to 380 mg∙m−3. Analysis of these data revealed that there was a linear relation, log10 algal biovolume = 5.99 + 0.09 chlorophyll a (r2 = 0.72), for cases in which median values of chlorophyll a for open-water periods were less than 20 mg∙m−3. There was no linear relation in cases in which median chlorophyll a concentrations were larger than 20 mg∙m−3 for open-water periods, an occurrence found only in shallow prairies lakes and wetlands for years in which light penetration was the least.

Processing Snap Bean Variety Responses to Applied Nitrogen and Irrigation in the North Central United States

2015 ◽  
Vol 107 (4) ◽  
pp. 1401-1410 ◽  
Author(s):  
Yi Wang ◽  
Matthew D. Ruark ◽  
Amanda J. Gevens ◽  
Don T. Caine ◽  
Amanda L. Raster ◽  
...  
Keyword(s):  
United States ◽  
Snap Bean ◽  
North Central ◽  
The North ◽  
Bean Variety ◽  
Central United States ◽  
Applied Nitrogen
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