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Selected Works

Articles 1 - 9 of 9

Full-Text Articles in Agronomy and Crop Sciences

Rethinking Invasion Impacts Across Multiple Field Sites Using European Swallowwort (Vincetoxicum Rossicum) As A Model Invader, Grant L. Thompson, Terrence H. Bell, Jenny Kao-Kniffin Aug 2018

Rethinking Invasion Impacts Across Multiple Field Sites Using European Swallowwort (Vincetoxicum Rossicum) As A Model Invader, Grant L. Thompson, Terrence H. Bell, Jenny Kao-Kniffin

Grant Thompson

European swallowwort [Vincetoxicum rossicum (Kleopow) Barbarich] is found in the northeastern United States and southeastern Canada. It forms dense growth patterns that reduce plant and insect biodiversity, and lab assays show that it produces allelopathic compounds that affect microbial activity. Consequently, we hypothesized that V. rossicum alters soil microbiome composition and activity in invaded habitats, which may impact
ecosystem properties and processes. We sampled soil from a similar time point within a growing season at each of five sites in New York State where V. rossicum was both present and absent. We measured bacterial and fungal microbiome composition, available soil …

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Diversity Enhances Npp, N Retention, And Soil Microbial Diversity In Experimental Urban Grassland Assemblages, Grant L. Thompson, Jenny Kao-Kniffin May 2016

Diversity Enhances Npp, N Retention, And Soil Microbial Diversity In Experimental Urban Grassland Assemblages, Grant L. Thompson, Jenny Kao-Kniffin

Grant Thompson

Urban grasslands, landscapes dominated by turfgrasses for aesthetic or recreational ground covers, are rapidly expanding in the United States and globally. These managed ecosystems are often less diverse than the natural or agricultural lands they replace, leading to potential losses in ecosystem functioning. Research in non-urban systems has provided evidence for increases in multiple ecosystem functions associated with greater plant
diversity. To test if biodiversity-ecosystem function findings are applicable to urban grasslands, we examined the effect of plant species and genotypic diversity on three ecosystem functions, using grassland assemblages of increasing diversity that were grown within a controlled environment facility. …

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Soybean As A Receiver Crop For Nitrogen In Swine Lagood Effluent, Daniel W. Israel, Robert Mikkelsen Dec 2000

Soybean As A Receiver Crop For Nitrogen In Swine Lagood Effluent, Daniel W. Israel, Robert Mikkelsen

Robert Mikkelsen

Soybean (Glycine max L. Merr.) has been approved by the Natural Resource Conservation Service as a receiver crop for N in swine lagoon effluent applied to spray fields. However, its efficacy as a N receiver crop depends on the sensitivity of symbiotic N2 fixation to inhibition by N in the applied effluent. The objectives of this study were to use a 15N natural abundance method to (i) assess the degree of inhibition of symbiotic N2 fixation in soybean by applied effluent N and (ii) determine the quantity of effluent N removed from the soil in harvested seed of nodulating soybean. …

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Tva Fluid Fertilizers Chapter Seven - Suspension Fertilizers - Production And Use, J Getsinger, Frank Achorn, George Hoffmeister, Robert Mikkelsen Dec 1983

Tva Fluid Fertilizers Chapter Seven - Suspension Fertilizers - Production And Use, J Getsinger, Frank Achorn, George Hoffmeister, Robert Mikkelsen

Robert Mikkelsen

No abstract provided.

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Chapter Six - Liquid (Solution) Fertilizers, Frank P. Achorn, Lawrence C. Faulkner, Robert Mikkelsen Dec 1983

Chapter Six - Liquid (Solution) Fertilizers, Frank P. Achorn, Lawrence C. Faulkner, Robert Mikkelsen

Robert Mikkelsen

No abstract provided.

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Tva Fluid Fertilizers Chapter Three - Physical Properties Evaluation Aspects, T M. Jones, H L. Balay, Robert Mikkelsen Dec 1983

Tva Fluid Fertilizers Chapter Three - Physical Properties Evaluation Aspects, T M. Jones, H L. Balay, Robert Mikkelsen

Robert Mikkelsen

No abstract provided.

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Sulphate Of Potash For Quality, Kali Export Gesellschaft Dec 1974

Sulphate Of Potash For Quality, Kali Export Gesellschaft

Robert Mikkelsen

No abstract provided.

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Sulphate Of Potash For Quality Dec 1974

Sulphate Of Potash For Quality

Benjamin L. Harwood

No abstract provided.

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Sulphate Of Potash For Quality Dec 1974

Sulphate Of Potash For Quality

Robert Mikkelsen

No abstract provided.

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