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 20 of 83 for “"postemergence"”.
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Comparative Studies With Several Selective Postemergence Grass Herbicides for Soybeans
Restricted to the U of I community indefinitely during batch ingest of legacy ETDs
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Postemergence control of annual bluegrass with mesotrione in Kentucky bluegrass
… weed is currently the only viable option. The postemergence control of annual bluegrass with an herbicide is difficult. The number of herbicides available for use in cool-season turf is limited, and the ones that are available, selectively control annual bluegrass in a few turfgrass species and …
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Factors affecting the performance of three postemergence, grass- selective herbicides
A series of experiments was conducted to investigate the effects of adjuvants, spray volume, temperature, and combinations with broadleaf-selective herbicides on the toxicity of sethoxydim (2-[l-(ethoxyimino)-butyl]-5-[2-(ethylthio)-propyl]-3-hydroxy-cyclohexene-1-one), CGA-82725 (2-propynyl …
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Evaluation of CGA-136872 and DPX-V9360 for postemergence use in corn
… ))-N,N-dimethyl) were investigated for postemergence use in corn, including corn tolerance, weed control and combinations of CGA-136872 with other postemergence corn herbicides for weed control. CGA-136872 Applied at rates of 1.2, 2.5, 5.0 and 10.0 times the suggested recommended use …
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Environmental influence on postemergence chemical control of crabgrass (Digitaria spp.) in turf
The influence of environment on efficacy of postemergence herbicides was quantified. A three-fold approach included: first, use of field test sites to select an herbicide sensitive to environmental conditions; second, quantify herbicide responses to temperature, moisture, and morphological …
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Evaluation of Weed Control and Crop Tolerance With Postemergence Herbicides in Sethoxydim-Tolerant Corn
… Excellent bermudagrass control was obtained from postemergence broadcast or postemergence directed applications of sethoxydim, fluazifop-P, quizalofop-P, clethodim, and fluazifop-P plus fenoxaprop. Broadcast applications of fluazifop-P and both broadcast and directed applications of clethodim …
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The Effect of Various Herbicide Combinations Applied Postemergence to Corn and Giant Foxtail (Setaria Faberii)
Made available in DSpace on 2014-12-12T00:17:53Z (GMT). No. of bitstreams: 1 7317251.pdf: 5933623 bytes, checksum: 68abbeeccc4b1e066897290743238281 (MD5) Previous issue date: 1972
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Effect of postemergence johnsongrass control on MCDV and MDMV incidence and severity in field corn
… treated with nicosulfuron or primisulfuron for postemergence johnsongrass control. Symptoms observed included chlorosis, reddening of the leaves and shortening of the internodes. The nature and time of symptom expression were consistent with those caused by maize chlorotic dwarfvirus (MCDV) and …
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Characterizing Oxadiazon Resistance and Improving Postemergence Control Programs for Goosegrass (Eleusine indica) in Bermudagrass (Cynodon spp.)
… turfgrass managers are seeking alternatives for postemergence goosegrass control and how to utilize currently labeled goosegrass control products more effectively. Studies were conducted to investigate a suspected-resistant (SR) goosegrass accession in Richmond, VA and characterize the resistance …
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Effects of Petroleum Oil and Soybean Oil in Adjuvants for Postemergence Herbicides (Surfactant, Photodecomposition, Absorption, Efficacy, Translocation)
… oil-emulsifier blend (SBOC) as adjuvants for postemergence herbicides.
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Studies on Postemergence Grass Herbicides for Soybeans and Uptake, Translocation and Metabolism of Fluazifop-Butyl in Several Plants
Field studies evaluating the efficacy of several new chemistry post-emergence grass herbicides indicated high potential of these herbicides for controlling annual grasses in soybeans. Low rates and delayed application time to allow most grasses to germinate, resulted in nearly 100% grass control …
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Investigating the potential of novel synergistic postemergence tank mixtures to manage HPPD- and atrazine-resistant Amaranthus tuberculatus populations
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-04-06 without embargo terms
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Double-crop corn (zea mays) weed control in Virginia
… residual herbicides and/or selective postemergence herbicides in both production systems. Glyphosate-tolerant corn was planted in all experiments and postemergence glyphosate treatments were also evaluated. In each experiment, dependent variables included weed control by species …
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Weed Control in Cucumber Cucumis sativus, Pumpkin Cucurbita maxima, and Summer Squash Cucurbita pepo with Halosulfuron
… 4, 9, 18, and 27 g ai/ha preemergence (PRE) and postemergence (POST) in combination with clomazone at 174 g ai/ha plus ethalfluralin applied PRE at 630 g/ha. Crop injury, weed control, and crop yield was collected from the field studies. Weed control by halosulfuron was dependent upon application …
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Studies on the Timing of Application, Soil Activity, and Factors Affecting Soil Activity of Several Selective Grass Herbicides (Sethoxydim, Fluazifop-Butyl, Haloxyfop-Methyl)
Field studies on the management of postemergence grass herbicides were conducted. No reduction in soybean yield occurred as a result of up to 5 weeks of early grass competition. Delayed treatment of sethoxydim (10-15 cm stage) especially when planting early provided the best grass control by …
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Evaluation of Glyphosate Resistant Giant Ragweed (Ambrosia trifida) in Ohio Soybean (Glycine max) Fields
… cloransulam-methyl; 3) Determine the effect of postemergence herbicide management strategies on control and fecundity of giant ragweed in glyphosate-resistant soybeans and 4) Compare the effectiveness of University-recommended strategies with those used by growers, for management of giant …
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Efficacy of glufosinate and weed control in transformed corn and soybean
Glufosinate is a postemergence herbicide that inhibits the glutamine synthetase enzyme in plants, causing an accumulation of ammonia, inhibition of photosynthesis, and ultimately plant death. The use of this herbicide has been limited to no-tillage prior to planting or in noncrop areas. Recent …
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Studies on the Herbicidal Properties of Sn 533 (Epronaz) (1- (n-Ethyl- N-Propylcarbamoyl) -3-Propyl-Sulphonoyl) -1,2,4-Triazole) and Its Uptake, Translocation and Metabolism by Soybeans and Peanuts
… was to evaluate SN 533 for preemergence and postemergence herbicidal activity, and to determine its fate in soybeans (Glycine max L.) and peanuts (Arachis hypogea L.).
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Studies on the Use of Herbicides for Control of Wild Garlic (Allium Vineale L.) in a Winter Wheat-Soybean Double Crop Rotation (Chlorsulfuron, Dpx T6376)
… chlorsulfuron was applied preemergence, and postemergence, in early fall, late fall, early spring and late spring. All treatments reduced aerial and underground bulb production, but spring applications were much more effective than preemergence, or postemergence, fall applications. …
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