Browsing Plant Sciences electronic theses and dissertations (MU) by Thesis Advisor "Bradley, Kevin W. (Kevin Wayne), 1973-"
Now showing items 1-18 of 18
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Agronomic and pest interactions in no-till corn and soybean wih fall versus spring herbicide applications
(University of Missouri--Columbia, 2006)Fall herbicide applications have increased in popularity in recent years. Little is known of how fall herbicide applications impact soil conditions, insect populations, and winter and summer annual weed populations. Few ... -
Evaluation of agrochemical interactions and application timings in corn and soybean
(University of Missouri--Columbia, 2013)Due to the increase in glyphosate-resistant (GR) weeds, two agrochemical companies have developed soybeans with resistance to 2,4-D and dicamba in an effort to provide growers with new options for the control of problematic ... -
Evaluation of cover crops as a component of a weed management system in corn and soybean
(University of Missouri--Columbia, 2016)The recent interest in cover crops as a component of Midwest corn and soybean production systems has led to a greater need to understand the most effective herbicide program for cover crop termination prior to planting ... -
Evaluation of herbicide programs for the management of glyphosate-resistant giant ragweed in soybean
(University of Missouri--Columbia, 2013)In recent years, glyphosate-resistant (GR) giant ragweed (Ambrosia trifida L.) has become an increasingly problematic weed of soybean production systems in Missouri and throughout the Midwest. As of 2013, giant ragweed has ... -
Evaluation of the incidence, severity and forage nutritive value of common weed species in Missouri pastures
(University of Missouri--Columbia, 2017)Across the 2015-2016 growing seasons, 43 mixed tall fescue and legume pastures were surveyed to determine the effects of selected soil and forage parameters on the density of individual weed species and overall weed density. ... -
Evaluations of driftable fractions of dicamba and 2,4-D to selected herbaceous and woody plant species
(University of Missouri--Columbia, 2019)Commercialization of 2,4-D and dicamba-resistant cotton and soybean has given producers another mechanism of action to control herbicide resistant weeds. As a result of the adoption of this technology, off-target movement ... -
Herbicide resistant weeds in Missouri : sources and solutions
(University of Missouri--Columbia, 2019)Herbicide resistant weeds continue to invade new territories each year. Two studies were designed to identify both the spread and the current status of herbicide resistant weeds in Missouri. In 2016 and 2017, 98 separate ... -
Identification, characterization, and management of glyphosate-resistant waterhemp (Amaranthus rudis sauer.) in Missouri
(University of Missouri--Columbia, 2008)The possibility of in waterhemp has been of concern to Midwest corn and soybean producers due to a heavy dependence on glyphosate as a weed control tool and the increased incidence and problematic nature of waterhemp in ... -
Influence of herbicide applications and common pasture weeds on total forage yield and nutritive values in tall fescue pastures and hayfields in Missouri
(University of Missouri--Columbia, 2009)The addition of several new herbicides labeled for pastures or hayfields has led many growers to question their options for weed management in these environments. In addition, little is known about the influence of common ... -
Influence of herbicide programs, weed height, and glufosinate and 2,4-D combinations on weed management in soybean resistant to 2,4-D
(University of Missouri--Columbia, 2012)The introduction of transgenic crops with resistance to 2,4-D will provide growers with new weed management options in soybean. To better understand the utility of this technology in soybean production systems, field and ... -
Influence of herbicides application on weed and tall fescue management and grazing distribution in Missouri pastures
(University of Missouri--Columbia, 2012)One weed that is of concern in Missouri pastures that can be detrimental is Northern dewberry (Rubus flagellaris Willd.). This weed can be detrimental due its production of spines which can injure grazing animals and also ... -
Influence of tillage methods and waterfowl migration on weed seed distribution
(University of Missouri--Columbia, 2016)Identical field experiments were conducted in 2014 and 2015 in Arkansas, Illinois, Indiana, Ohio, Tennessee, Wisconsin and at two sites in Missouri to determine the effects of four tillage treatments combined with one of ... -
Integration of cultural practices and herbicide-resistant crop technologies for the management of glyphosate-resistant waterhemp in soybean
(University of Missouri--Columbia, 2014)Common waterhemp (Amaranthus rudis Sauer) is the most prominent and troublesome weed in agronomic crops in Missouri, Iowa, and Illinois. As of 2014 in the U.S., herbicide resistance was present in waterhemp to one or more ... -
Interactions between cover crops, herbicides and weeds in soybean production systems
(University of Missouri--Columbia, 2018)The use of cover crops in soybean production systems has increased in recent decades. There are many questions surrounding cover crops, specifically their benefits to crop production and how to best manage them. One ... -
Interactions between glyphosate, Fusarium infection of waterhemp, and soil microorganisms
(University of Missouri--Columbia, 2013)In recent years, an increasing number of weed populations have been characterized with resistance to the herbicide glyphosate. In particular, waterhemp has evolved glyphosate resistance (GR) across numerous soybean fields ... -
Investigations of 2,4-d-resistant waterhemp and seed treatment and herbicide interactions in soybean
(University of Missouri--Columbia, 2017)Field research experiments were conducted in 2015 and 2016 in Missouri to determine whether interactions are present between herbicides sprayed prior to planting and seed treatments in soybean. Two varieties of soybean ... -
Investigations of the forage nutritive value of common weeds encountered in Missouri pastures and their relationships with soil fertility
(University of Missouri--Columbia, 2019)During the 2015, 2016, and 2017 growing seasons, a survey of 63 pastures in Missouri was conducted to determine the effects of selected soil and forage parameters on the density of common annual, biennial, and perennial ... -
Utilization of dicamba for the control of glyphosate-resistant giant ragweed (Ambrosia trifida L.) and waterhemp (Amaranthus rudis Sauer.)
(University of Missouri--Columbia, 2013)Soybean varieties that are resistant to the herbicide glyphosate now comprise the majority of soybean acres planted in the U.S. In the past ten to fifteen years, glyphosate has been used as the primary herbicide for ...