Browsing Theses (MU) by Thesis Advisor "Smeda, R. J. (Reid John), 1960-"
Now showing items 1-18 of 18
-
Biology and control of Amur honeysuckle
(University of Missouri--Columbia, 2013)Amur honeysuckle (Lonicera maackii) is an invasive weed species that is present in a majority of the United States. This weed has the ability to displace native plant species and develop monocultures in undisturbed areas. ... -
Biology and management of cut-leaved Teasel (Dipsacus laciniatus L.) in central Missouri
(University of Missouri--Columbia, 2006)Cut-leaved teasel is a biennial invasive weed that grows along roadsides and low disturbed areas. This research was to determine growth characteristics, herbicide efficacy, and seed production of teasel. Growth characteristics ... -
Competition and management of volunteer corn (Zea Mays L.) in corn
(University of Missouri--Columbia, 2011)Volunteer corn (Zea mays L.) is the result of corn kernels remaining in the field following harvest and is a competitive weed in a number of subsequent crops. With widespread adoption of glyphosate-resistant (Gly-R) corn, ... -
Control of amaranthus species using dicamba as a pre- and post-herbicide in Missouri
(University of Missouri--Columbia, 2013)The auxinic herbicide dicamba has been used traditionally as a selective post emergent (POST) herbicide for control of broadleaf weeds in monocot cropping systems. Dicamba resistance is an emerging technology that will ... -
Development of flavonoid compounds in Norton and Cabernet Sauvignon grape skins during maturation
(University of Missouri--Columbia, 2014)Norton is an important grape cultivar that is native to Missouri and grown widely because of disease resistance and wine quality. Wine quality is related to levels of flavonoids, and vineyard practices influence flavonoid ... -
Efficacy of organic herbicides in agronomic crops and improvement of soil biota with organic production practices
(University of Missouri--Columbia, 2019)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI--COLUMBIA AT REQUEST OF AUTHOR.] CHAPTER I. Literature Review. CHAPTER II. Impact of Organic Herbicides in Corn (Zea mays). Abstract: Tillage is a weed control method in ... -
Efficacy of oriental mustard (Brassica juncea L. Czern.) seed meal for weed and disease control in turf
(University of Missouri--Columbia, 2009)Pest management in turf involves the use of fumigants such as methyl bromide, as well as selective pesticides. However, the loss of methyl bromide and development of disease resistance to fungicides suggests that more ... -
Emergence and control of horseweed (Conyza canadensis)
(University of Missouri--Columbia, 2015)*Horseweed (Conyza canadensis (L). Cronq.) traditionally has been viewed as a winter annual. However, farmers report increased problems managing horseweed that emerges in the spring. In the fall of 2013 and 2014, emergence ... -
Emergence pattern of Amaranthus spp. and impact on growth and reproduction
(University of Missouri--Columbia, 2015)Amaranthus species such as common waterhemp (Amaranthus rudis) and Palmer amaranth (A. palmeri) are troublesome annual weeds in cropping systems throughout the Midwest. Seedlings can emerge throughout the growing season ... -
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 ... -
Horticultural crop response to synthetic auxins
(University of Missouri--Columbia, 2019)[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Rising adoption of dicamba-tolerant soybeans increases the potential exposure of grapes to dicamba, where off-target injury may occur via particle or ... -
Identification and characterization of glyphosate-resistant common ragweed
(University of Missouri--Columbia, 2007)A revolution in production agriculture has occurred over the past decade; the development and use of herbicide-resistant crops. Glyphosate is an effective, broad spectrum and offers flexible application timing with minimal ... -
Identification and management of glyphosate-resistant annual bluegrass (Poa annua L.)
(University of Missouri--Columbia, 2010)Annual bluegrass is the most problematic weed on golf courses in the Transition Zone and Southern United States. Applications of glyphosate are common on dormant zoysiagrass to remove winter annual weeds. In 2007, a suspect ... -
Mechanical and thermal weed control in organic crops
(University of Missouri--Columbia, 2017)Effective weed control is one of the most yield-limiting factors in organic corn and soybean production. Additionally, the amount of tillage needed to control weeds in organic practice is often criticized for its negative ... -
Poison hemlock (conium Maculatum L.) : biology, implications for pastures and response to herbicides
(University of Missouri--Columbia, 2008)Poison hemlock is a biennial, toxic and invasive weed that grows along roadsides, pastures and low-disturbed areas. Research was conducted to determine seed ecology, growth characteristics and response to herbicides. Seed ... -
Tank contaminant and residual effects of dicamba
(University of Missouri--Columbia, 2017)Introduction of dicamba-tolerant soybeans (Glycine max L. Merr.) will improve management of increasing populations of herbicide-resistant weeds. However, increased use will lead to risks for damage to susceptible crops ... -
Vegetation management along roadside and railroad right-of-ways
(University of Missouri--Columbia, 2018)Efficient transportation of freight as well as motorists requires effective control of vegetation on right-of-ways (ROW's). Traditionally on railroad ROW's, residual herbicides are applied early in the growing season with ... -
Weed management and nitrogen loss in glyphosate-resistant corn (Zea mays)
(University of Missouri--Columbia, 2009)The advent of glyphosate-resistant corn in Missouri has changed traditional reemergence (PRE) followed by postemeregence (POST) herbicide programs to ones that predominately utilize glyphosate POST. POST only programs can ...