Limnological Conditions Influencing Duckling Use of Saline Lakes in South-Central North Dakota

1984 ◽  
Vol 48 (2) ◽  
pp. 340 ◽  
Author(s):  
George A. Swanson ◽  
Vyto A. Adomaitis ◽  
Forrest B. Lee ◽  
Jerome R. Serie ◽  
John A. Shoesmith
Keyword(s):  
North Dakota ◽  
Saline Lakes ◽  
South Central

Impacts of Crop Sequence and Tillage Management on Soil Carbon Stocks in South-Central North Dakota

2016 ◽  
Vol 80 (4) ◽  
pp. 1003-1010 ◽  
Author(s):  
Jonathan J. Halvorson ◽  
Mark A. Liebig ◽  
David W. Archer ◽  
Mark S. West ◽  
Donald L. Tanaka
Keyword(s):  
North Dakota ◽  
Soil Carbon ◽  
Carbon Stocks ◽  
South Central ◽  
Soil Carbon Stocks ◽  
Crop Sequence

Greenhouse Gas Fluxes of a Shallow Lake in South-Central North Dakota, USA

Wetlands ◽  
2016 ◽  
Vol 36 (4) ◽  
pp. 779-787 ◽  
Author(s):  
Brian A. Tangen ◽  
Raymond G. Finocchiaro ◽  
Robert A. Gleason ◽  
Charles F. Dahl
Keyword(s):  
North Dakota ◽  
Greenhouse Gas ◽  
Shallow Lake ◽  
South Central ◽  
Gas Fluxes ◽  
Greenhouse Gas Fluxes

A NEW SPECIES OF CHIRONOMUS (DIPTERA: CHIRONOMIDAE) FROM SALINE LAKES IN BRITISH COLUMBIA

1975 ◽  
Vol 107 (4) ◽  
pp. 447-450 ◽  
Author(s):  
Robert A. Cannings
Keyword(s):  
British Columbia ◽  
New Species ◽  
Saline Lakes ◽  
South Central ◽  
A New Species

AbstractA new species, Chironomus athalassicus, is described from saline lakes in south-central British Columbia.

Habitat Use by Mallard Broods in South Central North Dakota

1982 ◽  
Vol 46 (3) ◽  
pp. 629 ◽  
Author(s):  
Larry G. Talent ◽  
Gary L. Krapu ◽  
Robert L. Jarvis
Keyword(s):  
Habitat Use ◽  
North Dakota ◽  
South Central

scholarly journals Survival of Mallard Broods in South-Central North Dakota

The Condor ◽  
1983 ◽  
Vol 85 (1) ◽  
pp. 74-78 ◽  
Author(s):  
Larry G. Talent ◽  
Robert L. Jarvis ◽  
Gary L. Krapu
Keyword(s):  
North Dakota ◽  
South Central

scholarly journals Foods Consumed by Breeding Mallards on Wetlands of South-Central North Dakota

1985 ◽  
Vol 49 (1) ◽  
pp. 197 ◽  
Author(s):  
George A. Swanson ◽  
Mavis I. Meyer ◽  
Vyto A. Adomaitis
Keyword(s):  
North Dakota ◽  
South Central

scholarly journals Widespread Occurrence of Ergot in Upper Midwestern U.S. Barley, 2005

Plant Disease ◽  
2006 ◽  
Vol 90 (4) ◽  
pp. 527-527 ◽  
Author(s):  
P. B. Schwarz ◽  
S. M. Neate ◽  
G. E. Rottinghaus
Keyword(s):  
North Dakota ◽  
Disease Incidence ◽  
Regional Survey ◽  
North Central ◽  
Widespread Occurrence ◽  
The North ◽  
South Central ◽  
Low Incidence ◽  
Rain Splash ◽  
Grading Standards

Ergot, caused by Claviceps purpurea (Fr.) Tul., occurs every year on cereals and grasses in North Dakota, but the occurrence on barley (Hordeum vugare L) is generally sporadic with a very low incidence of sclerotia. Disease surveys conducted during the 2005 growing season revealed an unusually widespread occurrence. This is of concern since barley production in North Dakota was estimated at 1.25 million metric tons, 27% of the total 2005 U.S. production. Barley samples (n = 304, ~0.50 kg) collected in all crop-reporting districts of North Dakota, northwestern Minnesota, and northeastern Montana, as part of an annual regional survey of barley crop quality (4), were examined for sclerotia. All barley samples were cleaned for dockage, and ergot (% [w/w]) was estimated on subsamples of ~100 g from a sample divider. Of all barley samples collected, 62% contained ergots. The regional average for ergot infested kernels was 0.06%, and samples ranged from <0.01 to 1.19%. Approximately 15% of all samples were in excess of 0.10% ergots and would have been downgraded to ergoty barley under the Official United States Standards for Grain. Occurrence of ergot was most common in northwestern Minnesota and the three eastern and north-central districts of North Dakota. Ergot was less frequent in the south-central and three western districts of North Dakota and was not detected in samples from northeastern Montana. Floret infection occurs during and up to 15 days after anthesis (2), and in the three eastern and north-central districts of North Dakota that occurred around the last week in June and first week in July. Between 22 June and 4 July, the North Dakota Agricultural Weather Network Stations in that region recorded average daily temperatures of 99% of the 30-year norm, but multiple precipitation events amounted to 227% of the 30-year norm. Rain splash and associated high relative humidity favor conidiation and spread of the fungus (1) and may have contributed to the high disease incidence. Average sclerotia weight for a sample ranged from <10 to 70 mg. However, large sclerotia (37 to 180 mg) often were removed by the no. 6 riddle of the dockage tester and were not counted in the ergot estimates as per U.S. Grading Standards. Samples containing 1.19, 0.81, 0.22, 0.14, 0.05, and 0.02% ergots were analyzed for ergopeptine alkaloids (3). These were found to contain 27.9, 25.4, 2.4, 1.1, 1.7, and 5.7 μg/g ergopeptine alkaloids, respectively. The average ratio of ergosine/ergotamine/ergocornine/ergocryptine/ergocristine was approximately 1:2:2:3:9. There also was widespread occurrence of the Fusarium mycotoxin deoxynivalenol (DON) on North Dakota barley in 2005. While there was no apparent relationship between the level of the DON and the amount of ergot in the samples (r = 0.042), more than 90% of samples with ergot had detectable levels (0.1 to 69 μg/g) of DON. While only DON is routinely measured in the crop survey (4), other tricothecenes and zearalenone have also been detected. This should be of concern to livestock producers and grain processors since the potential interactions of multiple mycotoxins are not well known. References: (1) G. M. Marshall. Ann. Appl. Biol. 48:19, 1960. (2) S. B. Puranik and D. E. Mathre. Phytopathology 61:1075, 1971. (3) G. E. Rottinghaus et al. J. Vet. Diag. Invest. 5:242 1993. (4) P. B. Schwarz et al. J. Am. Soc. Brew. Chem. 64:1, 2006.

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