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Дисертації з теми "Effect of herbicide on"

Автор: Grafiati
Опубліковано: 4 червня 2021
Оновлено: 20 лютого 2023

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1

Somireddy, Upender Reddy. "Effect of Herbicide-Organic Mulch Combinations on Weed Control and Herbicide Persistence." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1325255792.

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2

Mansooji, Ali Mohammad. "Herbicide resistance in wild oats, Avena spp." Title page, contents and abstract only, 1993. http://web4.library.adelaide.edu.au/theses/09PH/09phm289.pdf.

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3

Maneechote, Chanya. "Mechanisms of herbicide resistance in wild oats (Avena spp.)." Title page, contents and abstract only, 1995. http://web4.library.adelaide.edu.au/theses/09PH/09phm274.pdf.

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Анотація:
Bibliography : leaves 159-184. This study found at least three mechanisms of resistance to the acetyl coenzyme A carboxylase (ACCase)-inhibiting herbicides. A modified target -site was responsible for moderate and high resistance to herbicides at the whole plant level. Enhanced herbicide metabolism and reduced translocation of herbicide to the target site was observed in one resistant biotype each.
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4

Abulnaja, Khalid Omar. "Effect of different herbicide classes on lipid metabolism." Thesis, Cardiff University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.254870.

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5

Zama, Paul. "Studies on the mechanisms of action of the herbicide safener CGA- 92194." Diss., Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/49970.

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CGAr92194 {α-[1,3-dioxolan-2-yl-methoxy)imino]benzeneacetonitrile} is a herbicide safener that is used as a seed dressing agent (1.25 g ai/kg seeds) to protect grain sorghum [<i>Sorghum bicolor</i> (L.) Moench] against metolachlor [2-chloroi-<u>N</u>-(2-ethyl-6-methylphenyl-<u>N</u>-(2-methoxy1-methylethyl)acetamide] injury. The potential adverse phytotoxic effects and the mechanisms of the protective action of this safener were studied in laboratory experiments. Adverse phytotoxicity was assessed by comparing CGA-92194 and the herbicide safeners cyometrinil {(Z)-α[(cyanomethoxy)imino]benzene
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6

Clifford, Philip A. (Philip Alan). "Validation of a Coupled Herbicide Fate and Target Plant Species Effects Model." Thesis, University of North Texas, 1989. https://digital.library.unt.edu/ark:/67531/metadc332422/.

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A series of experiments provided data to parameterize and validate a coupled herbicide fate and target plant species effects model. This simulation model is currently designed to predict responses of water hyacinth populations to treatments of the dimethylamine formulation of 2,4- dichloro-phenoxy acetic acid (2,4-D -DMA). Experiments investigated 1) the response of water hyacinth to varying exposures of 2,4-D (DMA); 2) the role of water hyacinth density and herbicide interception in treatment effectiveness using 2,4-D (DMA); and 3) the importance of root exposure to obtain control of water hy
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7

Nietschke, Brett Steven. "Integrated strategies for wild oat (Avena spp.) management in southern Australian farming systems." Title page, contents and abstract only, 1997. http://web4.library.adelaide.edu.au/theses/09PH/09phn677.pdf.

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Анотація:
Bibliography: leaves 128-146. Study was undertaken to determine the occurence and species incidence of wild oats in a major cropping region of southern Australia. Population dynamic studies were undertaken at two sites to define the seed bank decline and emergence pattern of several wild oat populations over a three year period. Management studies were conducted to determine appropriate strategies for the control of wild oats in southern Australian farming systems.
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8

Mersie, Wondimagegnehu. "Selectivity and soil behavior of chlorsulfuron." Diss., Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/53563.

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Анотація:
Response of barley (<i>Hordeum vulgare</i> L.) and wheat (<i>Triticum aestivum</i> L.) to root-applied chlorsulfuron (2-chloro N-[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl) amino] carbonyl] benzenesulfonamide), a herbicide for use in small grains, was investigated. The results showed that, although wheat roots take up more chlorsulfuron than barley roots, barley was less tolerant to chlorsulfuron and chlorsulfuron was more mobile in barley. This study indicated that difference in uptake or translocation cannot explain the differential response of the two species to root-applied chlorsulfuron. I
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9

Fillmore, Andrew Nathan. "Droplet Size Effect on Herbicide Used in Cereals to Control Dicotyledonous Weeds." Thesis, North Dakota State University, 2014. https://hdl.handle.net/10365/27419.

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Анотація:
Experiments were conducted to evaluate the effect of droplet size on the efficacy of translocated and non-translocated herbicides. Translocated and non-translocated herbicides provided similar control when comparing droplet size effect on efficacy. Medium and very coarse droplet sizes gave the greatest visible injury whereas coarse-sized gave the lowest visible injury assessments for most species. However, droplet size generally did not affect contact herbicide efficacy. Overall, droplet size was not a strong factor contributing to herbicide efficacy and often, differences were only between he
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10

Yenne, Samuel P. "Investigations on the mechanism of action of the oxime ether safeners for the protection of grain sorghum against metolachlor." Diss., Virginia Polytechnic Institute and State University, 1989. http://hdl.handle.net/10919/54821.

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Анотація:
Herbicide safeners (protectants, antidotes) are used to protect crop plants from herbicide injury. Currently our understanding of the mechanisms involved in the protection of plants by safeners is not well defined; therefore, investigations were conducted to elucidate the mechanism(s) of action of the oxime ether safeners. Molecular comparisons of selected herbicide-safener combinations using computer-aided molecular modeling revealed that the chemical structures of safeners and herbicides are very similar at the molecular level; and, indicate that these compounds could bind at the same active
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11

Friesen, Lincoln Jacob Shane. "Identification of the mechanisms of wild radish herbicide resistance to PSII inhibitors, auxinics, and AHAS inhibitors." University of Western Australia. School of Plant Biology, 2008. http://theses.library.uwa.edu.au/adt-WU2008.0106.

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Анотація:
The objective of this Ph.D. research was to identify new and novel mechanisms of wild radish (Raphanus raphanistrum L.) resistance to photosystem II (PSII) inhibitors, auxinics, and acetohydroxyacid synthase (AHAS) inhibitors. PSIIinhibitor resistance was demonstrated to be target-site based, and conferred by a Ser264 to Gly substitution of the D1 protein. Auxinic resistance was associated with reduced herbicide translocation to the meristematic regions of resistant wild radish plants. Two new resistance mutations of wild radish AHAS were discovered, including one encoding the globally rare As
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12

Carr, J. E. "Physiological effects of the herbicide fluazifop-butyl." Thesis, Nottingham Trent University, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.482982.

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13

Dodds, Darrin Matthew. "Adjuvant effects on herbicide absorption and translocation." Diss., Mississippi State : Mississippi State University, 2007. http://library.msstate.edu/etd/show.asp?etd=etd-11022007-143506.

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14

Stedman, Sam. "Effect of Timing and Herbicide Compatibility in the Application of Burst on Upland Cotton." College of Agriculture, University of Arizona (Tucson, AZ), 1987. http://hdl.handle.net/10150/221232.

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Анотація:
A field trial was conducted to study the elements of application timing and herbicide compatibility in the use of Burst, a plant growth regulator, and the effects of these two factors on yield of upland cotton. Eight treatments combined the two factors of timing and tank mix. The results showed no significant difference in yield between treatments.
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15

Sta, Chaima. "Activités toxiques et génotoxiques de la sulcotrione chez Vicia faba, en association ou non avec d'autres molécules de protection." Thesis, Clermont-Ferrand 2, 2014. http://www.theses.fr/2014CLF22453/document.

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La toxicité cellulaire potentielle de la sulcotrione 2-(2-chloro-4-(methylsulfonyl)benzoyl)-1,3-cyclohexanedione, un herbicide sélectif tricétonique a été évaluée sur Vicia faba et Allium cepa. La génotoxicité a été étudiée sur une culture hydroponique pour des traitements à différentes concentrations de sulcotrione 10-5, 10-4 et 2.10-4 M pendant 45 h. Nos résultats ont montré que la sulcotrione provoque une augmentation dose-dépendante de la fréquence des micronoyaux dans les cellules méristèmatiques des racines. Elle induit des altérations chromosomiques à la concentration la plus faible (10
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16

Clark, Sonya A. "Herbicide effects on white clover growth and nodulation." Thesis, University of Canterbury. Microbiology, 1987. http://hdl.handle.net/10092/6909.

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Five herbicides commonly used for suppression of weed growth in white clover seed crops were tested for toxicity against white clover (Trifolium repens), Rhizobium trifolii and the nitrogen fixing symbiosis formed between these two organisms. Trials were carried out on R.trifolii on solid and in liquid media to determine if growth of this bacterium was affected by the presence of the 5 herbicides. Paraquat and MCPB substantially inhibited bacterial growth on solid medium. Bentazone, fusilade and kerb caused very small zones of growth inhibition of R.trifolii on solid agar at high concentration
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17

Hankins, S. D. "The effect of precipitation on the performance of foliage-applied herbicides for the control of broad-leaved weeds." Thesis, University of Oxford, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.379852.

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18

Barker, Whitnee Leigh. "Lateral Movement of Herbicides on Golf Course Fairways and Effects on Bentgrass Greens." Thesis, Virginia Tech, 2004. http://hdl.handle.net/10919/9929.

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Concern has been raised that herbicides recently registered for use in warm-season turf to control perennial ryegrass could be dislodged from treated areas and deposited on neighboring cool-season grasses. In a field study, rimsulfuron was applied at 17.5 or 35 g ai/ha to perennial ryegrass in the afternoon; the following morning while dew was still present, a greens mower was driven through the perennial ryegrass and across adjacent creeping bentgrass. Irrigation had no effect on perennial ryegrass control but reduced visible track length and injury of neighboring creeping bentgrass. When tre
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19

Robinson, Richard D. (Richard Daniel). "The effects of bromoxynil herbicide on experimental prairie wetlands /." Thesis, McGill University, 1989. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=55701.

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20

Kim, Do-Soon. "Modelling herbicide and nitrogen effects on crop-weed competition." Thesis, University of Bristol, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302155.

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21

Jenkins, David G. "Effects of an herbicide on a planktonic food web." Thesis, Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/90948.

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In situ microcosms of a planktonic community were exposed to the triazine herbicide simazine. Randomly selected sets of microcosms were collected and sampled each week for three weeks (plus Week 0). Samples of ambient water were collected each week for evaluation of enclosure effects. Physical and chemical parameters were measured per microcosm. Simazine was measured at Weeks 0 and 3 only. The following organisms were preserved and quantified: phytoplankton, bacteria, and zooplankton, including ciliates, copepod nauplii, cladocerans and rotifers. Simazine decreased dissolved oxygen and pH, b
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22

Simão, Fátima Cristina Paulino. "The effects of distinct herbicide regimes in soil arthropods." Master's thesis, Universidade de Aveiro, 2011. http://hdl.handle.net/10773/6235.

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Mestrado em Ecologia, Biodiversidade e Gestão de Ecossistemas<br>As práticas agrícolas têm sido associadas a perdas em larga escala a nível da biodiversidade. No entanto, elementos como as margens dos campos, são con-siderados importantes e com potencial para diminuir os impactes da agricultura ao promover fontes de alimento e refúgio. No entanto, os pesticidas e em parti-cular os herbicidas podem afectar estas áreas e provocar impactes nas comu-nidades que dependem destas estruturas. Devido à sua sensibilidade a pertur-bações, os artrópodes são um grupo ideal para avaliar os impactes de pesti
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23

Kim, Sangho. "Metabolic bases for the differential response of 'Kwangkyo' and 'Hood' soybean (Glycine max (L.) Merr) to the herbicide paraquat." Diss., Virginia Tech, 1992. http://hdl.handle.net/10919/40182.

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The soybean cultivars differentially sensitive to 'Kwangkyo' and 'Hood' are the bipyridylium herbicide paraquat (1,l'-dimethyl-4,4'-bipyridinium ion). This was confirmed by visible injury observations as well as by measurements of desiccation ratings, chlorophyll content, and chlorophyll fluorescence tracings of fully expanded first trifoliolate leaves of these two cultivars after exposure to a wide range of paraquat concentrations. The margin of this intraspecific differential tolerance to paraquat was narrow and the ratio of the paraquat concentrations causing 50% injury to the tolerant Kwan
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24

Rowe, Alexander M. "The effects of the herbicide atrazine on mammalian immune function." Morgantown, W. Va. : [West Virginia University Libraries], 2007. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=5181.

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Анотація:
Thesis (Ph. D.)--West Virginia University, 2007.<br>Title from document title page. Document formatted into pages; contains vi, 183 p. : ill. (some col.). Includes abstract. Includes bibliographical references.
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25

Galli, Fabrizio. "Welfare effects of herbicide-tolerant rice adoption in southern Brazil." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=106439.

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The advent of new biological technologies requires significant investment in research and development (R&amp;D). The public sector has historically lead initiatives in agricultural R&amp;D, which due to its public goods nature and high investment risk, the private sector has had limited incentive to participate. However, with the consolidation of intellectual property mechanisms in agriculture – such as Plant Breeders Rights and patents – and the increasing debate on the appropriate rigor they ought to entail, the private sector has accounted for a significant share of the R&amp;D expenditure
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26

Martin, Mark. "Herbicide Effects on Cultivars of Soybeans [Glycine Max (L.) Merr.]." TopSCHOLAR®, 1985. https://digitalcommons.wku.edu/theses/2585.

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Breeding herbicide-tolerant cultivars is a means of extending herbicide utilization. In 1983 and 1984, 20 soybean [Glycine max (L. Merr] cultivars were screened for their reactions to the following herbicides: metribuzin 4-amino-6-(tert)-butyl-3-(methylthio)-astriazin-5-(4H)-one]; vernolate (S-propyl dipropylthiocarbamate); and fluchloralin [N-(2-chloroethyl)-2,6-dinitro-N-propyl-4-(trifluoromethyl) aniline]. Each herbicide was applied at the recommended rate X, 2X, and 4X in 1983. An 8X rate was added in 1984. The recommended rates (X) for the herbicides were as follows: metribuzin 0.42, vern
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27

Bianchi, Leandro. "Efeito de glyphosate e clethodim isolados e em mistura em Digitaria insularis." Universidade Estadual Paulista (UNESP), 2018. http://hdl.handle.net/11449/153555.

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Submitted by Leandro Bianchi (leandro_bianchii@hotmail.com) on 2018-04-16T19:41:47Z No. of bitstreams: 1 Leandro final.pdf: 3197976 bytes, checksum: 442c110e13ec1198a874c1285f176bbc (MD5)<br>Approved for entry into archive by Maria Lucia Martins Frederico null (mlucia@fca.unesp.br) on 2018-04-16T20:03:09Z (GMT) No. of bitstreams: 1 bianchi_l_me_botfca.pdf: 3197898 bytes, checksum: 5bd6736d1b7a1e530435ae5e7c91c884 (MD5)<br>Made available in DSpace on 2018-04-16T20:03:09Z (GMT). No. of bitstreams: 1 bianchi_l_me_botfca.pdf: 3197898 bytes, checksum: 5bd6736d1b7a1e530435ae5e7c91c884 (MD5) Previo
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28

Arjoon, Diane S. "Effect of water table management on pesticide movement in two Québec soils." Thesis, McGill University, 1993. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=69596.

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Анотація:
A three year field study was undertaken to assess the influence of water table management, namely subsurface irrigation and controlled drainage, on the movement of pesticides through the soil profile into ground water. The herbicides under investigation were prometryn on an organic soil, and metolachlor on a sandy soil. Both soil and groundwater were collected and analyzed. The results presented are those obtained in the first two years of the project.<br>In the organic soil, herbicide leaching was greatly reduced due to the management of the water table. The pesticide remained higher in the s
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29

Cave, Ashley E. "Grey treefrog tadpole development and behavior altered by dicamba herbicide exposure." Wittenberg University Honors Theses / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=wuhonors1623757491963071.

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30

Chin, Pampillo Juan Salvador. "Environmental benefits of using biochar as an amendment in pineapple cultivation in Costa Rica: soil physicochemical and biological effects and interaction with agrochemicals." Doctoral thesis, Universitat Autònoma de Barcelona, 2020. http://hdl.handle.net/10803/670452.

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La producció de pinya tropical és una activitat econòmica important a Costa Rica, l’àrea de cultiu de la qual ha augmentat significativament en les dues darreres dècades, i amb una significativa generació de residus agroindustrials i ús intensiu de plaguicides com els herbicides bromacil i diuron. Tots dos han estat detectats en aigües superficials i subterrànies, causant problemes ambientals, de salut i econòmics, malgrat que hi ha poca informació sobre el seu destí ambiental en sòls tropicals. La transformació de residus agroindustrials en biocarbó (biochar) mitjançant piròlisi i la seva adi
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31

Smith, Chad Lee. "Auxin herbicide effects on glyphosate efficacy and cotton (Gossypium hirsutum) yield." Thesis, Mississippi State University, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10141708.

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<p> Field, greenhouse and laboratory experiments were implemented to investigate the effects of auxin herbicides on growth and yield of cotton in glyphosate based systems. Field experiments evaluated the effect of rate and timing of dicamba or 2,4-D exposure when applied in glyphosate-resistant cotton. Increasing rates of either dicamba or 2,4-D resulted in increased injury and yield reductions. Initial injury symptomology was similar for cotton exposed at vegetative and reproductive stages. When cotton was exposed to auxin herbicides during vegetative growth, injury increased with time, while
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32

Sun, Jinxia. "Characterization of Organosilicone Surfactants and Their Effects on Sulfonylurea Herbicide Activity." Diss., Virginia Tech, 1996. http://hdl.handle.net/10919/30343.

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This research focused on the characterization of organosilicone surfactants and their effects on sulfonylurea herbicide activity. The project included efficacy tests, rainfastness studies in the greenhouse, radiotracer studies on herbicide uptake, fluorescent dye studies on surface deposition, and various measurements of physico-chemical properties. In measuring physico-chemical properties, a logistic dose response relationship was found between adjuvant concentration and contact angle on parafilm. An AsymSigR relationship existed between adjuvant concentration and surface tension for all the
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33

Nichols, K. J. "The influence of bentazone on stomatal movements." Thesis, Nottingham Trent University, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233906.

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34

Humphry, Roger William. "Herbicide effects on a plant community and on monocultures of different densities." Thesis, University of Liverpool, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367638.

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35

Emsalem, Caroline. "Intoxications par le Paraquat et le Diquat, étude pharmacocinétique et index de péroxydation : à propos de deux cas cliniques." Paris 5, 1995. http://www.theses.fr/1995PA05P019.

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36

Anderson, Robert David. "Effects of Nitrogen Fertilizer Rate, Timing, and Herbicide Use on Industrial Hemp (Cannabis Sativa)." TopSCHOLAR®, 2018. https://digitalcommons.wku.edu/theses/2100.

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Industrial hemp (Cannabis sativa) is an old crop being reintroduced into certain states; thus, very little information is known about growing the crop domestically. Two field experiments were established in Bowling Green, KY to evaluate various nitrogen fertilizer rates and timing applications to examine the effects on growth and yield of industrial hemp (Cannabis sativa). Each experiment was sprayed with 1.12 a.i. ha-1 pendimethalin on half of each plot as a pre – emergent herbicide. Hemp was planted at a rate of 43 kg/ ha into a conventionally tilled silt loam soil. Nitrogen rates studied we
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37

Nuttens, Andréïna. "Étude des effets de l'interaction entre polluants et ressources sur Myriophyllum spicatum grâce à une approche couplant écotoxicologie et écologie chimique." Thesis, Université de Lorraine, 2016. http://www.theses.fr/2016LORR0143/document.

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Анотація:
La contamination simultanée des écosystèmes aquatiques par des polluants et des nutriments est un problème majeur dont les effets sur les macrophytes sont encore méconnus. L'objectif de cette thèse était d'étudier les effets de deux types de polluants : herbicides et éléments trace métalliques (ETM), en combinaison avec des ressources variables (azote, phosphore, ou carbone) sur Myriophyllum spicatum, en utilisant des paramètres provenant de l'écologie chimique et de l'écotoxicologie. Les tests ont montré des effets contrastés des herbicides sur la plante, mais pas d'effet des ETM. Dans tous l
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38

Alaib, M. A. "Seedlings' growth in response to drought stress and 2,4-dichlorophenoxyacetic acid (2,4-D)." Thesis, Durham University, 1989. http://etheses.dur.ac.uk/6325/.

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Анотація:
The aim of this work was to study the effect of the herbicide, 2,4-D on a mono- cot (Lolium temulentum Linn.) and a dicot (Raphanus sativus Linn.) in relation to drought stress, in order to elucidate if the combined treatments altered the survival of the plants. Herbicide effects were investigated on a number of plant developmental stages; germination, seedling growth, mature leaves and root function, and were combined with various water stress regimes.2,4-D did not alter the germination percentage in either species when applied singly or with polyethylene glycol (PEG) induce water stress. How
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39

Oppong, Francis Kofi. "Studies on the biological activity of a novel herbicide (Triasulfuron) including studies of mobility and persistence in soil." Thesis, Bangor University, 1988. https://research.bangor.ac.uk/portal/en/theses/studies-of-the-biological-activity-of-a-novel-herbicide-triasulfuron-including-studies-of-mobility-and-persistence-in-soils(20ca442c-519c-4e3a-a11e-9e0b162ff25e).html.

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Triasulfuron (3-(6-methoxy-4-methyl-1,3,5-triazin-2-yl)-1-[2-(2- chloroethoxy)-phenylsulfonyl)-urea} is a new pre- and post-emergence herbicide developed for the control of broad-leaved_'Teeds and some grasses in small grain cereals at rates of 10-20gha . Oilseed rape, pea, broad bean, Senecio vulgaris, Veronica persica, Lolium renne, Poa annua, Poa trivialis and prates were severely a ed 5y pre-emergence and post-emergence applications of triasulfuron but wheat and barley were much more resistant. The development of injury symptoms was generally slow and was characterized by an initial growth
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40

Stoyer, Tracy Lynne. "Integration of the herbicide 2, 4-D with the rosette weevil Trichosirocalus horridus (Panzer) for control of Carduus thistles." Thesis, Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/76145.

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41

Besler, Brent Alan. "Effects of row spacing on diseases, herbicide persistence, and qualitative characteristics of peanut." Diss., Texas A&M University, 2003. http://hdl.handle.net/1969.1/2188.

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Field and greenhouse studies were conducted to assess the effects of row-spacing on diseases, weed control, herbicide persistence and plant development in peanut. Tebuconazole, when averaged across cultivars and row spacing, effectively controlled white mold (57%) and rust (58%). Azoxystrobin also controlled white mold (58%) and controlling rust (44%). Both fungicides reduced leaf spot severity in the conventional and twin rows when compared to untreated plots. Twin rows showed a 10% yield increase compared to the conventional planting. Both diclosulam and imazapic, when applied to twin rows
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42

McCloskey, William B., and Michael Maurer. "Effects of Long-Term Preemergence Herbicide Use on Growth and Yield of Citrus." College of Agriculture, University of Arizona (Tucson, AZ), 1997. http://hdl.handle.net/10150/220524.

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The effects of several preemergence herbicides at various rates were tested on bearing Redblush' grapefruit trees and non-bearing Navel orange trees. Some of the preemergence herbicides caused foliar injury symptoms on the trees including Hyvar X Diuron, and Krovar I although they did not cause significant yield reductions in the short time period of this experiment. Several herbicides including Solicam, Surflan, and Prowl did not cause foliar injury or reduce yield and provided good weed control for various lengths of time. The Prowl treatments provided the longest period of weed control in t
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43

Dalvie, Mohamed Aqiel. "The long-term respiratory health effects of the herbicide, paraquat, among Western Cape workers." Master's thesis, University of Cape Town, 1996. http://hdl.handle.net/11427/25687.

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Objective: Paraquat is a commonly used herbicide worldwide and is a well-documented cause of pulmonary fibrosis in studies of laboratory animals and in humans following high dose exposure (usually accidental or as parasuicide). The respiratory effects of long-term, low dose paraquat exposure have not been fully evaluated. We set out to evaluate the possible effects of paraquat spraying among deciduous fruit farm workers in the Western Cape, South Africa. Methods: A cross-sectional study of 126 workers was performed. Administered questionnaires generated information on exposure, respiratory sym
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44

Bevilaqua, Natalia da Cunha. "Dinâmica e ação do nicosulfuron em híbridos de milho /." Botucatu, 2019. http://hdl.handle.net/11449/181829.

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Orientador: Caio Antonio Carbonari<br>Banca: Edivaldo Domingues Velini<br>Banca: Natália Corniani<br>Resumo: O herbicida nicosulfuron se destaca entre os principais utilizados em pós-emergência na cultura do milho. Dentre as tecnologias disponíveis no mercado, alguns híbridos podem ser considerados tolerantes ao nicosulfuron, e essa sensibilidade diferencial está relacionada com o ambiente, o estádio de desenvolvimento da planta e a dose de herbicida utilizada. A seletividade de herbicidas é geralmente determinada em função da fitointoxicação e do efeito do produto nas características morfológ
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45

Winnick, Blake Edward. "The Effects of Glyphosate Based Herbicides on Chick Embryo Development." Thesis, University of North Texas, 2013. https://digital.library.unt.edu/ark:/67531/metadc500146/.

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Glyphosate based herbicides are among the most widely used herbicides in the world. The purpose of this study was to determine developmental toxicity of glyphosate, the active ingredient in the common herbicide Roundup, on developing chicken embryos. Few studies have examined toxic effects of glyphosate alone versus the full compound formulations of Roundup, which include adjuvants and surfactants. Adjutants and surfactants are added to aid in solubility and absorption of glyphosate. In this study chicken embryos were exposed at the air cell on embryonic day 6 to 19.8 or 9.9 mg / Kg egg ma
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46

Perrin-Ganier, Corinne. "Dispersion et transformation de l'isoproturon dans le sol et l'eau." Vandoeuvre-les-Nancy, INPL, 1995. http://www.theses.fr/1995INPL074N.

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Les mécanismes responsables du transfert de l'herbicide isoproturon dans le sol et vers les eaux captées ont été étudiés. D'abord, l'analyse de la teneur en isoproturon dans l'eau libre du sol prélevée par drainage ou bougie poreuse a démontré son passage précoce dans la solution du sol superficielle. Puis, le même sol limono-argileux a servi à constituer des colonnes modéles placées sous conditions climatiques naturelles. Il est apparu que les événements pluvieux susceptibles de provoquer les migrations importantes qui contaminent les eaux souterraines interviennent au cours du premier mois q
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47

Abell, Kristopher J. "The Effects of Clearcutting and Glyphosate Herbicide Use on Parasitic Wasps in Maine Forests." Fogler Library, University of Maine, 2007. http://www.library.umaine.edu/theses/pdf/AbellKJ2007.pdf.

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48

Calas, André-Guilhem. "Neurotoxicité du principe actif d'un herbicide à large spectre, le glufosinate d'ammonium, chez la souris." Orléans, 2008. http://www.theses.fr/2008ORLE2072.

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Le glufosinate d’ammonium (GLA) est le principe actif d’un herbicide à large spectre. Son utilisation tend à s’accroître avec le développement des cultures transgéniques résistantes à cet herbicide, entraînant une augmentation de l'exposition des agriculteurs au GLA, à de faibles doses mais sur des périodes prolongées. L’action herbicide du GLA s’effectue par inhibition de la glutamine synthétase (GS) végétale. Cette enzyme, est également présente dans le système nerveux central des mammifères où elle joue un rôle primordial dans l’homéostasie du principal neurotransmetteur excitateur, le glut
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49

Ackley, John A. "Efficacy and selectivity of the herbicide rimsulfuron in potatoes [Solanum tuberosum], transplanted tomatoes [Lycopersicum esculentum], and transplanted peppers [Capsicum annum]." Thesis, This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-06302009-040447/.

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50

Sellers, Brent Alan. "The physiological basis for diurnal effects on glufosinate activity and impacts on weed management in glufosinate-resistant corn /." free to MU campus, to others for purchase, 2003. http://wwwlib.umi.com/cr/mo/fullcit?p3091967.

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