Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"hydroxyphenylpyruvate dioxygenase (HPPD)"”.
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Evaluation of Benzobicyclon for use in Midsouthern Rice (Oryza sativa) Systems
… to Group 2 herbicides. This will be the first 4-hydroxyphenylpyruvate dioxygenase (HPPD)-inhibiting herbicide commercially available in US rice production. Since, benzobicyclon is still under development, it is important to evaluate this herbicide in a drill-seeded rice production system. …
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Evaluation of Topramezone for Use in Rice (Oryza sativa L.) Production
… One SOA that has garnered interest is the 4-hydroxyphenylpyruvate dioxygenase (HPPD)- inhibiting herbicides. The only HPPD-inhibitor that will soon be labeled for use in US rice is benzobicyclon. The major disadvantage benzobicyclon has when compared to many other herbicides is that it must …
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Physiological and Environmental Basis of Turfgrass and Weed Response to Mesotrione Formulations
… biosynthesis by inhibiting the enzyme p-hydroxyphenylpyruvate dioxygenase (HPPD). Although mesotrione controls many species of grass and broadleaf weeds, it is best know for selective control of perennial grasses like creeping bentgrass (Agrostis stolonifera L.). Field trials conducted at …
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Characterization of a novel five-way-resistant population of waterhemp (Amaranthus tuberculatus)
… auxin receptor, Photosystem II (PSII), and 4-hydroxyphenylpyruvate dioxygenase (HPPD). In 2012, a grower reported the failure to control a waterhemp population in conventional white corn with topramezone, an HPPD inhibitor. Records indicate the field had been planted with conventional corn …
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Evaluation of Benzobicyclon in Midsouth Rice (Oryza sativa) Production Systems
… susceptible to benzobicyclon and other 4-hydroxyphenylpyruvate dioxygenase (HPPD)-inhibiting herbicides. More specifically, japonica-type rice cultivars show much better crop safety to benzobicyclon than indica-type or japonica- x indica-type. In this research, the indica-type rice …
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Distinct biochemical and molecular mechanisms confer resistance to mesotrione and atrazine in a multiple herbicide-resistant waterhemp population
… case of resistance to mesotrione and other 4-hydroxyphenylpyruvate dioxygenase (HPPD) herbicides in a waterhemp population designated MCR. Experiments were conducted to determine if target-site or non-target-site mechanisms confer mesotrione resistance in MCR. Additionally, the basis for …
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Characterization of HPPD-inhibitor resistance in waterhemp (Amaranthus tuberculatus)
… controlled following foliar applications of 4-hydroxyphenylpyruvate dioxygenase (HPPD)-inhibiting herbicides. Chapter 1 of this thesis includes a review of the literature pertaining to HPPD inhibitors, namely their discovery and uses as herbicides, as well as a section on waterhemp biology. …
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Preemergence activity of chloroacetamide herbicides on a multiple herbicide-resistant population of waterhemp (amaranthus tuberculatus)
… auxins, Photosystem II inhibitors (PSII), and 4-hydroxyphenylpyruvate dioxygenase (HPPD) inhibitors. Chloroacetamide herbicides, however, have remained effective. During research on the first HPPD-resistant population of waterhemp from Mclean County, IL (MCR), significantly less-than-anticipated …
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Optimizing Topramezone and Other Herbicide Programs for Weed Control in Bermudagrass and Creeping Bentgrass Turf
… response. An initial investigation of three 4-hydroxyphenylpyruvate dioxygenase (HPPD) inhibiting herbicides in different turf types showed that Kentucky bluegrass, perennial ryegrass, and tall fescue were highly tolerant to topramezone, while creeping bentgrass and bermudagrass could tolerate …
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THE INFLUENCE OF CARRIER WATER QUALITY, COAPPLIED FOLIAR FERTILIZER, AND WATER CONDITIONING ADJUVANT ON HERBICIDE EFFICACY
… will be applied on these crop systems. Likewise, hydroxyphenylpyruvate dioxygenase (HPPD); or mesotrione, glufosinate, isoxaflutole (MGI) resistant soybeans are being developed which will allow the use of mesotrione herbicide. Gaining knowledge on effect of carrier water quality will help for …
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From the simple to the complex: an examination of different herbicide resistances
Herbicide resistance is the result of an evolutionary adaptation that some agronomic weed species have obtained from intense human-driven selection. The mechanisms by which these plants resist herbicides can be diverse. For example, self-pollinating species, such as goosegrass (Eleusine indica), …