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Corn tissue nutrient response related to soil health and fertility
(University of Missouri--Columbia, 2021)
Nutrient uptake in corn (Zea mays L.) is influenced by many different factors which include properties of soil health. The push for increasing soil health has raised the question of how soil health and fertility measurements could be combined...
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...
Cover crop and rotation intensity effects on soil health and yield in corn-soybean cropping systems
(University of Missouri--Columbia, 2020)
soil health and cash crop yields for the long-term. The implementation of cover crops and crop rotation are widely promoted management strategies that have been shown to enhance soil health in agricultural systems, and may lead to increases in cash crop...
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...
Comparison of three tall fescue-based stocker systems
(University of Missouri--Columbia, 2009)
A two-year study was conducted on tall fescue-based pastures to evaluate three approaches to rotationally stocking stocker calves. Within each year, two sets (a spring set and a fall set) of crossbred steers were stratified ...
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...
Molecular characterization of soybean resistance to soybean cyst nematode
(University of Missouri--Columbia, 2009)
identified. The Rhg4 locus, a major QTL controlling soybean resistance against H. glycines was previously sequenced and patented by two independent research groups and a gene encoding a leucine-rich repeat receptor-like kinase protein (LRR-RLK) was proposed...
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...
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...
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...
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...
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...
Response of beef cattle selected for tolerance to tall fescue toxicosis
(University of Missouri--Columbia, 2019)
D2 (DRD2) gene has been identified as a way to determine tolerance to tall fescue toxicosis. Results will be presented from three research projects involving cow-calf pairs on pasture, heifers in the GrowSafe feeding system, and rumen fluid in a...
Efficacy of oriental mustard (Brassica juncea L. Czern.) seed meal for weed and disease control in turf
(University of Missouri--Columbia, 2009)
. Residual material from the extraction of oils of oriental mustard seed may provide an integrated approach. Research was conducted comparing the effects of MSM to dazomet on the germination of different weeds and turfgrasses. Comparisons were also conducted...
Characterization of raffinose synthase genes in soybean
(University of Missouri--Columbia, 2009)
As the use of soy products in foods and feeds increases, it is ever more important to consider the nutritional value of each component of the seed. The carbohydrate component is largely composed of sucrose, raffinose, and ...
Comparing mosquito communities of various patch-matrix landscape combinations in central Missouri, with implications for developing models to forecast abundances of important mosquito taxa
(University of Missouri--Columbia, 2010)
environmental conditions within different landscape configurations may help approximate a model for predicting the risk of encountering these disease vectors. Therefore, the goals of the research were to 1) describe the mosquito fauna of the various patch...
Herbage accumulation, nutritive value and nitrogen dynamics of a tall fescue forage system with either nitrogen fertilization or intercropped sunn hemp
(University of Missouri--Columbia, 2019)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Elevated temperatures and declining precipitation during the summer results in tall fescue [Schedonorus arundinaceus (Schreb.) Dumort., nom. Cons] ...
Plasticity of soybean (Glycine max (l.) Merrill) root system development under mild water deficit
(University of Missouri--Columbia, 2008)
Drought is the major abiotic factor limiting soybean yield in the US. Under water deficit conditions, root systems may exhibit developmental plasticity resulting in morphological changes that extend the water-absorbing ...
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 ...
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...