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Full-Text Articles in Life Sciences
Use Of Capacitance Sensors For Development Of Conservative Irrigation Regimes, Ethan Daniel Hagen
Use Of Capacitance Sensors For Development Of Conservative Irrigation Regimes, Ethan Daniel Hagen
Masters Theses
Several experiments were conducted to further develop capacitance sensor-based automated irrigation systems. The first experiment tested whether the photosynthetic response to decreasing volumetric water content (VWC) differed among four species tested. A sigmoidal curve best described the relationship for all species (r2 [r-squared]>0.86). The VWC that maintained maximum photosynthesis at 90% was selected as a potential conservative irrigation set point and values were not different between species, nor were 100% container capacity values. This indicates that a single set point is adequate to initiate irrigation and that a common upper threshold for VWC can be used for this …
Distribution And Growth Of Autumn Olive In A Managed Landscape, Matthew Ruddick Moore
Distribution And Growth Of Autumn Olive In A Managed Landscape, Matthew Ruddick Moore
Masters Theses
Invasions by exotic plant species result in significant challenges for forest managers. Disturbance and increased light have been shown to facilitate the successful establishment and invasion of exotic, invasive plant species. Several studies have sought to determine which key factors lead to greater abundance of exotic, invasive plants on certain sites and this information is important for determining the likelihood for exotic plant invasions at broad scales. Site characteristics that may promote autumn olive (Elaeagnus umbellata) were studied. Our goal was to identify variables associated with forest road edges most important in explaining autumn olive abundance and growth. …
Impacts Of Preemergence Herbicides On Hybrid Bermudagrass Morphology, Patrick Alan Jones
Impacts Of Preemergence Herbicides On Hybrid Bermudagrass Morphology, Patrick Alan Jones
Masters Theses
Preemergence (PRE) herbicides were evaluated in multiple experiments to determine their impacts on hybrid bermudagrass morphology [(C. dactolyn (L.) Pers. x C. transvaalensis (Burtt Davy)]. First, indaziflam and prodiamine were applied to hybrid bermudagrass rooted to various depths in either sand or silt loam mini-rhizotrons. Results indicated that prodiamine (a mitiotic inhibitor) and indaziflam (a cellulose biosynthesis inhibitor) both significantly reduced root length density compared to a non-treated control; however, indaziflam treated plants exhibited foliar injury (i.e., reddening, necrosis) while those treated with prodiamine did not.
The researchers surmised that reductions in root length density with indaziflam may compromise …