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Earth Sciences

2014

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Articles 61 - 68 of 68

Full-Text Articles in Agriculture

U.S. Drought Monitor, January 14, 2014, Eric Luebehusen Jan 2014

U.S. Drought Monitor, January 14, 2014, Eric Luebehusen

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for January 14, 2014 (1/14/14) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Cattle, Winter wheat.


U.S. Drought Monitor, January 7, 2014, Mark D. Svoboda Jan 2014

U.S. Drought Monitor, January 7, 2014, Mark D. Svoboda

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for January 7, 2014 (1/7/14) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.


Nucleotide Polymorphism And Copy Number Variant Detection Using Exome Capture And Next-Generation Sequencing In The Polyploid Grass Panicum Virgatum, Joseph Evans, Jeongwoon Kim, Kevin L. Childs, Briaenne Vaillancourt, Emily Crisovan, Aruna Nandety, Daniel J. Gerhardt, Todd A. Richmond, Jeffery A. Jeddeloh, Shawn M. Kaeppler, Michael D. Casler, C Robin Buell Jan 2014

Nucleotide Polymorphism And Copy Number Variant Detection Using Exome Capture And Next-Generation Sequencing In The Polyploid Grass Panicum Virgatum, Joseph Evans, Jeongwoon Kim, Kevin L. Childs, Briaenne Vaillancourt, Emily Crisovan, Aruna Nandety, Daniel J. Gerhardt, Todd A. Richmond, Jeffery A. Jeddeloh, Shawn M. Kaeppler, Michael D. Casler, C Robin Buell

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Switchgrass (Panicum virgatum) is a polyploid, outcrossing grass species native to North America and has recently been recognized as a potential biofuel feedstock crop. Significant phenotypic variation including ploidy is present across the two primary ecotypes of switchgrass, referred to as upland and lowland switchgrass. The tetraploid switchgrass genome is approximately 1400 Mbp, split between two subgenomes, with significant repetitive sequence content limiting the efficiency of re-sequencing approaches for determining genome diversity. To characterize genetic diversity in upland and lowland switchgrass as a first step in linking genotype to phenotype, we designed an exome capture probe set based on transcript …


Soil Penetrometer, David A. Bainbridge Jan 2014

Soil Penetrometer, David A. Bainbridge

David A Bainbridge

A simple easy to build impact soil penetrometer can provide very useful information on soil strength. This can be very important for restoration planning and management of soils in agriculture and forestry.


Soil Solarization, David A. Bainbridge Jan 2014

Soil Solarization, David A. Bainbridge

David A Bainbridge

Soil solarization makes use of the energy of the sun to heat soil and kill weeds and pathogens. Single, double, or bubblepack plastic and be used to increase soil temperature. Multiple growth benefits are often realized.


Wetland Issues Affecting Waterfowl Conservation In North America, Heath M. Hagy, Scott C. Yaich, John W. Simpson, Eduardo Carrera, David A. Haukos, W.Carter Johnson, Charles R. Loesch, Fritz A. Reid, Scott E. Stephens, Ralph W. Tiner, Brett A. Werner, Greg S. Yarris Jan 2014

Wetland Issues Affecting Waterfowl Conservation In North America, Heath M. Hagy, Scott C. Yaich, John W. Simpson, Eduardo Carrera, David A. Haukos, W.Carter Johnson, Charles R. Loesch, Fritz A. Reid, Scott E. Stephens, Ralph W. Tiner, Brett A. Werner, Greg S. Yarris

Natural Resource Management Faculty Publications

This paper summarises discussions by invited speakers during a special session at the 6th North American Duck Symposium on wetland issues that affect waterfowl, highlighting current ecosystem challenges and opportunities for the conservation of waterfowl in North America. Climate change, invasive species, U.S. agricultural policy (which can encourage wetland drainage and the expansion of row-crop agriculture into grasslands), cost and competition for water rights, and wetland management for non-waterfowl species were all considered to pose significant threats to waterfowl populations in the near future. Waterfowl populations were found to be faced with significant threats in several regions, including: the Central …


The Effects That Liquid And Solid Cattle Manure Have On The Water Quality Of Drainage Ditches In Putnam County, Ohio, Janelle Horstman Jan 2014

The Effects That Liquid And Solid Cattle Manure Have On The Water Quality Of Drainage Ditches In Putnam County, Ohio, Janelle Horstman

Honors Projects

Lake Erie has experienced harmful algal blooms with increased frequency since the mid-1990s due to excess nutrients from Rivers, such as the Maumee River, and largely agricultural watersheds. Nonpoint source pollution from agriculture contributes to eutrophication, algal blooms, and the degradation of water quality. This creates stress on aquatic fauna, reduced aesthetic quality, odor, and limits of the water for usage of drinking, recreation, and industry. This research paper asks what the contributions of having access to manure application records, soil records, and information about antibiotics have on what is known about manure management and antibiotic resistance, which has been …


Boron Nutrition Of Burley And Dark Tobacco, Laura Ann Frakes Mitchell Jan 2014

Boron Nutrition Of Burley And Dark Tobacco, Laura Ann Frakes Mitchell

Theses and Dissertations--Plant and Soil Sciences

The incidences of suspected Boron (B) deficiency have increased recently in Kentucky tobacco fields, potentially due to recent changes in management practices. The symptoms observed in the field include; hollow stalk, stunted growth, deformed or no bud formation, small slits on the lower leaf midrib and uncontrollable breaking of the midrib approximately two inches from the stalk. B is a micronutrient tobacco needs in minute amounts, however excessive additions of B could cause toxicity. The objectives of this work were to 1) establish critical points for B sufficiency, 2) describe and define B deficiency and toxicity symptoms and 3) develop …