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Relationship of Vegetation Indices from Drone-Based Passive Optical Sensors with Corn Grain Yield and Sugar Beet Root Yield and Quality
(North Dakota State University, 2019)
The main goal of this study was to calibrate small unmanned aircraft system (SUAS) based vegetation indices with fertilizer-N application rate and yield for corn and sugar beet. It was hypothesized that canopy reflectance ...
Effects of Grazing of Reed Canarygrass (Phalaris arundinacea) in Restored Wet Meadows in the Northern Tall Grass Prairie
(North Dakota State University, 2019)
Reed canarygrass (Phalaris arundinacea) is a grass species that can dominate wet meadow plant communities. This study investigated if grazing by cattle on restored wet meadows suppresses reed canarygrass, thereby promoting ...
Impact of Nitrogen and Rhizobial Seed Inoculants on Soybean Aphid (Aphis Glycines Matsumura) Densities
(North Dakota State University, 2012)
Soybeans are able to obtain nitrogen from two different sources, nitrogen found in the soil (e.g. from fertilizers) and biologically fixed nitrogen (from symbiotic bacteria called rhizobia). Nitrogen source and degree of ...
Characterizing Soil Microbial Communities of Reclaimed Roads in North Dakota
(North Dakota State University, 2012)
Reclaimed roads on the Little Missouri National Grasslands of southwestern North Dakota have not returned to pre-disturbance conditions. Phospholipid fatty acid analysis was performed on soil samples collected from reclaimed ...
Corn Response to Sulfur Fertilizer in the Red River Valley
(North Dakota State University, 2018)
A study was conducted at ten locations in North Dakota and Minnesota in 2016 and 2017 to evaluate corn response to different sulfur (S) application rates and to determine the relationship between corn yield and plant tests. ...
Prairie Dog (Cynomys Ludovicianus) Contributions to Soil Change on Grazed Mixed-Grass Prairie
(North Dakota State University, 2012)
Vegetation and soils were evaluated on a black-tailed prairie dog (Cynomys ludovicianus) colony and adjacent non-disturbed mixed-grass prairie in central South Dakota. The study’s objectives were 1) determine differences ...
Evaluation of Soil Potassium Test to Improve Fertilizer Recommendations for Corn
(North Dakota State University, 2015)
A study was conducted at thirteen locations in North Dakota and Minnesota in 2013 and 2014 with the objectives of determining difference between the soil potassium (K) results based upon air-dried (KDry) and field-moist ...
Impacts of Prescribed Fire and Grazing on Northern Great Plains Rangelands
(North Dakota State University, 2018)
Prescribed burning was utilized as a management tool on grasslands of the Northern Great Plains. We analyzed the use of fire to manipulate encroaching and unpalatable western snowberry (Symphoricarpos occidentalis), to ...
Effectiveness of Multiple Restoration Techniques in Reducing the Abundance of Kentucky Bluegrass and Smooth Bromegrass in the Northern Great Plains
(North Dakota State University, 2012)
Kentucky bluegrass (Poa pratensis L.) and smooth bromegrass (Bromus inermus L.) are cool-season, perennial, non-native grasses that are invading North Dakota grasslands. Two studies evaluated different restoration techniques ...
Aphid Interactions with Environmental Variation in the Field and Lab
(North Dakota State University, 2015)
A basic tenet of ecology is that organisms are affected by both abiotic factors and other organisms; therefore, there is value in understanding interactions in our changing world. Aphids are model organisms for questions ...