• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 1
  • Tagged with
  • 2
  • 2
  • 2
  • 2
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Commercial Bumble Bees as Vectors of the Microbial Antagonist Clonostachys rosea for Management of Botrytis Blight in Wild Blueberry (Vaccinium angustifolium)

Reeh, Kevin 10 May 2012 (has links)
Greenhouse and laboratory experiments in 2011 determined that Clonostachys rosea can effectively prevent Botrytis cinerea infection in Vaccinium angustifolium blossoms. In vitro testing demonstrated that C. rosea germination was not significantly affected by the presence of Switch®, but was by either Pristine® or Maestro®. Field experiments completed during the summer of 2010 and 2011 indicated that the dispenser designs tested had no significant effects on Bombus impatiens foraging behaviours, aside from hive-activity. There was also no difference in the quantity of C. rosea applied by each to bees, the distribution of product in the field, or for blossoms exposed to bees from each dispenser to resist infection by B. cinerea. However, B. cinerea prevalence in blossoms from both treatments was significantly different from the control, with infection reduced by 10-20%. Technical issues with dispensers currently appear to be the limiting factor for application within commercial wild blueberry production.
2

Quantifying Asiatic garden beetle (<i>Maladera castanea</i>) populations and their impacts on commercial mint production

Connor Eric Sturr (17583585), Doug richmond (17583727), Elizabeth Y. Long (17583733), Christian Krupke (17583735) 07 December 2023 (has links)
<p dir="ltr">The Asiatic garden beetle (AGB), in its larval stage, has become an increasingly detrimental to the health of commercially grown mint in northern Indiana by feeding on their roots. In my research, I have optimized a method to quantify populations by determining the proper sample size to maintain accurate and precise estimates, determining the best sampling method and sampling scheme. Additionally, I established the relationship between AGB larval feeding and mint performance and have established a threshold of the average number of larvae required to cause significant yield loss. </p>

Page generated in 0.1416 seconds