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Competition and management of volunteer corn (Zea Mays L.) in corn
(University of Missouri--Columbia, 2011)
(10, 20, and 40 cm) in glufosinate-resistant or imidazolinone-tolerant hybrids, respectively. Research was conducted during 2008, 2009, and 2010 at multiple locations throughout central and northeast Missouri. Harvest inefficiencies resulted in kernels...
Mechanical and thermal weed control in organic crops
(University of Missouri--Columbia, 2017)
. This research was conducted in central Missouri from 2016-2017 to compare cultivation, flame application, between-row mowing, and hot water spray for in-season weed control in organic corn and soybeans. Between-row mowing and hot water application were paired...
Adaptation of soybean to tropical environments for smallholder farmers
(University of Missouri--Columbia, 2018)
There are many traits that influence crop adaption to a new environment so that it can perform as a farmer would prefer. In these chapters, I have shown the influence of the genetic mechanisms behind pod shatter, days to flower, days to maturity...
An attentional theory of issue-carrying capacity
(University of Missouri--Columbia, 2018)
for and tend to be more reactive to the problems in their social environments. The potential implications of these distinct cognitive styles, however, have received scant academic attention in political science research. In particular, we have scant knowledge...
Influence of herbicides application on weed and tall fescue management and grazing distribution in Missouri pastures
(University of Missouri--Columbia, 2012)
to the health of grazing animals. It can contain a fungus known as ergovaline which is in its highest concentration in tall fescue seedheads. Applying herbicides at certain growth stages can reduce tall fescue seedhead density. Applications of metsulfuron...
Molecular characterization of CLE peptide mimicry during cyst nematode pathogenesis
(University of Missouri--Columbia, 2011)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Plant-parasitic cyst nematodes establish intimate parasitic relationships with their hosts by penetrating the root as motile juveniles and migrating ...
Glyphosate resistance : pollen movement within a common ragweed (Ambrosia artemisiifolia L.) population and herbicide release from common waterhemp (Amaranthus rudis sauer) plants
(University of Missouri--Columbia, 2011)
Common ragweed and Common waterhemp are native, summer annual weeds distributed widely throughout the United States. Both weed species have developed resistance to the broad-spectrum herbicide glyphosate. Research was conducted to determine...
Effect of temperature on a soybean [Glycine max (L.) Merr.] mutant
(University of Missouri--Columbia, 2013)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Soybean is influenced by temperature and light, and global warming has been shown to reduce soybean yields. In this study we tested the germination of ...
Field pennycress management in upstate Missouri
(University of Missouri--Columbia, 2017)
Field pennycress has the potential to serve as a cover and oilseed crop. A seed oil content of 25 to 36 percent has created interest in pennycress domestication. This research evaluated management strategies for growing field pennycress. The most...
A digestive phospholipase a2 in Midguts of worker honey bees, Apis mellifera : significance in lipid nutrition and health
(University of Missouri--Columbia, 2018)
]C for at least three months. These findings open a new corridor of research into honey bee dietary lipid digestion and nutrition. I used classical molecular tools to identify genes encoding honey bee midgut PLA2s, to clone the genes from midgut tissue...
Allelopathic effects and removal of overseeded ryegrass on bermudagrass
(University of Missouri--Columbia, 2010)
is essential for bermudagrass recovery or decline of bermudagrass is inevitable. However, underlying reasons for this decline is unknown. Objectives of this research were to assess allelopathic effects of ryegrasses on bermudagrass and determine best management...
Evaluations of driftable fractions of dicamba and 2,4-D to selected herbaceous and woody plant species
(University of Missouri--Columbia, 2019)
, dicamba, and dicamba plus glyphosate were applied to begonia, coleus, geranium, impatiens, marigold, petunia, vinca, and zinnia. Based on visual injury assessments recorded 28 days after treatment (DAT), coleus was found to be the most sensitive species...
The influence of fusarium species on sweet potato plant performance, root yield and quality
(University of Missouri--Columbia, 2018)
was conducted in collaboration with an organic sweet potato grower to develop a strategy of using cover and/or green manure crops, by evaluating their effects on plant health, weed suppression and root yield in organic production systems. The results showed...
Characterizing hormesis and the in vitro effects of sub-lethal fungicide exposure in sclerotinia homoeocarpa
(University of Missouri--Columbia, 2018)
to exhibit hormesis. The first goal of this research was to evaluate the effects of sub-lethal doses of DMI fungicides on the mycelial growth of a range of S. homoeocarpa isolates via an in vitro fungicide assay. The second goal was to examine the impact...
Reducing ergovaline and ergot alkaloid concentrations through fertilizer, herbicide and clipping management
(University of Missouri--Columbia, 2010)
Animals grazing tall fescue grass (Lolium arundinaceum) infected with Neotyphodium coenophialum consume the toxins ergovaline and other ergot alkaloids. This research included a series of experiments with two overall objectives: 1) to explore...
Interactions between cover crops, herbicides and weeds in soybean production systems
(University of Missouri--Columbia, 2018)
in 2016. Glyphosate-, glufosinate-, and paraquat-based treatments were applied between April 15 and April 29 in 2016 and April 10 and April 20 in 2017. Visible control of cover crops was determined 28 days after application. Glyphosate-based herbicide...
Influence of entomopathogenic fungi from forest and urban habitats on founding pairs of reticulitermes flavipes (rhinotermitidae)
(University of Missouri--Columbia, 2015)
of subterranean termites has been unsuccessful using entomopathogenic fungi, such as Beauveria and Metarhizium. Previous biocontrol research focused mostly on the worker caste and exploiting social behaviors. Due to many social and physiological defenses, large...
Modification of fatty acid composition in soybean seeds to improve soybean oil quality and functionality
(University of Missouri--Columbia, 2011)
The purpose of this project is to modify the fatty acid composition in soybean seeds to improve soybean oil quality and functionality. By sequencing the FAD2-1A and FAD2-1B genes in 24 plant introductions, we identified ...
Vegetation management along roadside and railroad right-of-ways
(University of Missouri--Columbia, 2018)
followed by summer (half-rates). Spring/summer split applications resulted in consistent weed control throughout the growing season in four of five locations. Fall application at half-rates delayed the spring timing of spring half-rates up to 40 days...
Predator diversity impacts herbivore abundance and behavior with cascading effects on the prevalence of a vector-borne plant pathogen
(University of Missouri--Columbia, 2013)
There is growing concern about the loss of biodiversity; particularly of organisms at higher trophic levels, such as predators, which face a disproportionately higher risk of extinction. As predator diversity declines there ...