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Dissertations / Theses on the topic 'Pesticide residue in plant'

Author: Grafiati

Published: 4 June 2021

Last updated: 2 February 2022

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1

Diggle, Rebecca. "Regulatory science and uncertainty in the risk assessment of pesticide residues." Thesis, University of Nottingham, 2010. http://eprints.nottingham.ac.uk/11451/.

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In this thesis I examine how the scientific advisory system in England and Wales has responded to concerns about the risks of pesticide residues in food and demands for wider engagement in the formulation of advice. Specifically, I explore how the Advisory Committee on Pesticides (ACP) frames scientific uncertainties in risk assessment, and why some bodies outside and within government are critical of the ACP’s approach that is centred in the conventional single-chemical, high-dose-response paradigm of toxicology. Although some of these challenges date back to the early history of pesticide re

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2

Trevisan, Marcos José. "Resíduos de carbosulfan e de seus metabólitos carbofuran e 3-hidroxi-carbofuran em frutos e folhas de laranjeira [Citrus sinensis (L.) Osbeck], determinados por cromatografia em fase gasosa." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/11/11146/tde-12022003-144017/.

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Este estudo teve como principal objetivo avaliar o inseticida/acaricida carbamato carbosulfan e seus metabólitos carbofuran e 3-hidroxi-carbofuran, de modo a estudar este metabolismo em condições de campo, abrangendo a sua ocorrência como resíduos em frutos, cascas e suco, bem como o potencial de contaminação do agroecossistema (resíduos em folhas). A degradação/persistência desses resíduos nos substratos foi monitorada durante certo período de tempo de tomada de amostras, e comparada com o limite máximo de resíduo (LMR) e o intervalo de segurança, estabelecidos pela legislação Brasileira para

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3

Cerri, Fabiana. "Validação de metodologia para análise de procimidona em morango e determinação de seus resíduos na fruta \"in natura\" e produtos processados." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/11/11141/tde-15122008-145419/.

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O morango utilizado pela indústria alimentícia tem seu sabor e aroma bastante valorizados e apreciados, quando comparado com outras frutas. Entretanto, é um produto muito delicado e altamente perecível, exigindo, assim, o uso de técnicas adequadas de colheita e pós-colheita. Para manter sua qualidade e quantidade de produção, observa-se um aumento do uso de agrotóxicos para minimizar prejuízos causados por pragas e doenças do campo. Porém, os pesticidas podem deixar resíduos persistentes nos alimentos e o seu consumo in natura ou industrializado pode ficar comprometido, colocando em risco a sa

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4

Amajuoyi, Ifeanyi Kingsley. "Behavior and elimination of pesticide residues during supercritical carbon dioxide extraction of essential oils of spice plants and analysis of pesticides in high-lipid-content plant extracts." [S.l. : s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=963029177.

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5

Ahmad, Maqbool. "Pesticide residue analysis using supercritical fluid extraction." Thesis, University of South Wales, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320724.

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6

Haag, Jennie, and Anna Landahl. "Pesticide residues in cucumbers cultivated in Bangladesh." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-234741.

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Pesticides are widely used for preventing crop losses due to pest attack. In Bangladesh, the food safety and health of farmers are being compromised as a result of poor regulation concerning usage of pesticides in food production. The aim of this study was to identify and quantify pesticides applied on cucumber crops in Bangladesh. A method for extraction and clean-up was developed to allow the quantification of four pesticides by GC-ECD in vegetable samples, specifically cucumber. The accuracy of the method was validated using recovery and its precision by studying the standard deviation and

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7

Seeger, Bettina [Verfasser]. "Risk assessment of hormonally active pesticide residue mixtures / Bettina Seeger." Hannover : Bibliothek der Tierärztlichen Hochschule Hannover, 2016. http://d-nb.info/1107039568/34.

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8

Wei, Jin Chao. "Research on novel sample preparation and analytical methods for trace determination of the pesticides in traditional Chinese medicine." Thesis, University of Macau, 2018. http://umaclib3.umac.mo/record=b3953269.

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9

Trevizan, Luiz Roberto Pimentel. "Resíduos de acefato, de seu metobólito metamidofós e de clorotalonil em cultura protegida de tomate (Lycopersicon esculentum Mill) e de campo." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/11/11146/tde-18032003-165159/.

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O desenvolvimento da agricultura, a modernização dos meios da produção agrícola, buscando atender um mercado exigente em produtos de alta qualidade tem aumentado grandemente os cultivos conduzidos em condições de estufa. Tais culturas, demandam o uso de pesticidas para controle de problemas fitossanitários, cujos resíduos, principalmente em hortaliças e frutas, são motivo de preocupação com a saúde de consumidores e de operários que necessitam trabalhar nessas instalações. Os objetivos deste estudo foram determinar resíduos dos inseticidas acefato, de seu metabólito metamidofós e do fungicida

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10

Gershater, Markus Christian. "Plant carboxylesterases involved in pesticide hydrolysis." Thesis, Durham University, 2006. http://etheses.dur.ac.uk/2934/.

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Many herbicides are applied in the form of carboxylic esters to increase their hydrophobicity and hence aid their passage through the waxy cuticle. Hydrolysis in planta of these pro-herbicide esters releases the active acid or alcohol and the rate of this cleavage can be a factor in determining herbicide selectivity. Protein extracts from 13 crop and weed species were assayed for carboxylesterase activity toward multiple xenobiotic and pesticide ester substrates, including 2,4-D-methyl, aryloxyphenoxypropionate esters and p-nitrophenyl esters. A diversity of activities was exhibited by the dif

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11

Al-Saad, Jalal Abdulla. "Development of novel solid phase extraction materials for pesticide residue analysis." Thesis, University of Southampton, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263469.

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12

Monteiro, Sérgio Henrique. "Desenvolvimento e validação de metodologia para determinação de resíduos de pesticidas piretróides por HPLC em feijão." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/46/46133/tde-22062016-160326/.

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Um método rápido utilizando cromatografia liquida (LC) foi desenvolvido para determinação simultânea de 7 pesticidas piretróides (bifentrina, cipermetrina, fenpropatrina, fenvalerato, permetrina, lambda-cialotrina, e deltametrina). Os resíduos são extraídos com acetona e a partição realizada de acordo com o método multi-resíduos DFG-S19, substituindo diclorometano por acetato de etila/ciclohexano (1+1) e purificação usando cromatografia de permeação a gel com uma coluna Biobeads SX3 e acetato de etila/ciclohexano (1+1) como eluente. A separação por LC é realizada com uma coluna LiChrospher 100

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13

Marella, Venkata S. S. R. "Understanding plant residue decomposition in shrubland ecosystem." Thesis, Bangor University, 2015. https://research.bangor.ac.uk/portal/en/theses/understanding-plant-residue-decomposition-in-shrubland-ecosystem(6dcfe4c8-c9a4-46fe-aeb7-58b0a6e0fbf0).html.

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Litter decomposition is a key component in ecosystem C and nutrient cycling. Shrubland litter decomposition is not well understood, even though shrublands cover a significant proportion of earth surface. This project aims to investigate the decomposition of shrubland plant residue (Cistus monspeliensis L.). The first and second experimental chapters of this thesis present the data about root chemistry, C and N mineralisation from the decomposing roots. Root tissue chemistry varies significantly with age, younger roots consist of higher relative amounts of N, P, K, soluble compounds, conversely

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14

au, j. anderson@murdoch edu, and Jonathan Anderson. "Impacts of Amending Bauxite Residue Sands with Residue Fines for the Establishment of Vegetation on Residue Disposal Areas." Murdoch University, 2009. http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20090831.155453.

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Long term storage of bauxite residue materials requires a capping stratum which will limit erosion while stabilizing slopes, limit deep infiltration of water into storage piles, and be aesthetically acceptable to the surrounding community. A diverse native vegetative community capable of surviving seasonal drought, low plant available water and nutrient constraints has the best potential of satisfying most, if not all of these requirements. Current and past rehabilitation of residue disposal areas (RDAs) using species native to southwest Western Australia has exhibited varying success. Current

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15

Yau, Kerrm Y. F. "Synthesis of recombinant antibody fragments for pesticide residue analysis using enzyme-linked immunosorbent assays." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ35947.pdf.

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16

Motsoeneng, Marnonyowe Portia. "Relationship between pesticide residue levels and neurotoxicity among women on farms in the Western Cape." Master's thesis, University of Cape Town, 2014. http://hdl.handle.net/11427/13344.

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Includes bibliographical references.<br>Farm workers and residents living in and around farms are exposed to pesticides. Women are vulnerable to health risks posed by pesticides. To date there are few studies that have investigated the relationship between pesticide residues in human body fluids and neurotoxicity. This study therefore aims to investigate the relationship between urinary pesticide residue levels and neurotoxicity amongst women working in farms in the Western Cape, South Africa.

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17

Vilca, Franz Zirena. "Validação de método de análises multiresíduo para determinação de pesticidas em morango (Fragaria ananassa Duch) e quinoa (Chenopodium quinoa Willd), por técnicas cromatográficas CG-μECD e LC-MS/MS." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/91/91131/tde-30102012-163305/.

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O método de extração QuEChERS, foi ajustado, validado e utilizado para a determinação de doze agrotóxicos organoclorados em 37 amostras de quinoa provenientes da colheita 2010-2011 de Puno - Peru e 36 amostras de morango provenientes de três varejões da cidade de Piracicaba do Estado de São Paulo - Brasil coletadas durante o período de outubro de 2010 até setembro de 2011, usouse um sistema cromatográfico a gás acoplado a um detector de captura de elétrons μECD. Por outro lado para a determinação de 36 agrotóxicos nas amostras morango e 42 agrotóxicos em quinoa, o QuEChERS foi ajustado e va

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18

Marcomini, Angelina Maria. "Bioatividade e efeito residual de nanoformulações de nim sobre Spodoptera frugiperda (J.E. Smith)." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/11/11146/tde-09112009-141755/.

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Na tentativa de reduzir a biodegradação dos compostos ativos do nim e melhorar seu efeito residual, extratos de nim foram nanoformulados com diferentes tipos de nanoparticulas e de polímeros. Estas nanoformulações foram testadas sobre Spodoptera frugiperda (J. E. Smith) e sua eficiência comparada a um produto comercial. Os polímeros poli--caprolactona (PCL), poli-- hidroxibutirato (PHB) e polimetilmetacrilato(PMMA), foram utilizados nas quantidades 0,25, 0,50 e 0,75g, e em dois tipos de nanopartículas (cápsulas e esferas). Foram utilizados Tween®80 e polivinil álcool (PVA) como agentes tensoat

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19

Gibbs, Paul A. "The influence of residue chemical composition on gross rates of nitrogen mineralisation." Thesis, University of Reading, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.388468.

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20

White, Paul Mark Jr. "Enhancing soil carbon sequestration with plant residue quality and soil management." Diss., Manhattan, Kan. : Kansas State University, 2006. http://hdl.handle.net/2097/222.

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21

Collins, Shane. "Residue composition influences nutrient release from crop residues." University of Western Australia. School of Earth and Geographical Sciences, 2009. http://theses.library.uwa.edu.au/adt-WU2009.0171.

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[Truncated abstract] A greater adoption of stubble retention, minimum-till and no-till farming practices for the purposes of conserving soil, water and fertility requires a greater understanding of the complexity of physical and chemical interactions between the soil and crop residues. There is currently insufficient knowledge to allow reliable predictions of the effects of different residue types in different environments on soil fertility and crop growth, owing to the many residue characteristics and environmental interactions that have been shown to affect decomposition or nutrient release.

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22

Darvishvand, Taher Mehrdad. "A virtual nozzle for modeling pesticide spray deposition in a plant canopy." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ35792.pdf.

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23

Birtle, Alan John. "Development of controlled-release pesticide formulations for use against plant parasitic nematodes." Thesis, Imperial College London, 1985. http://hdl.handle.net/10044/1/37642.

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24

Kopittke, Peter Martin. "Limitations to plant root growth in highly saline and alkaline bauxite residue /." [St. Lucia, Qld.], 2004. http://adt.library.uq.edu.au/public/adt-QU20040913.094109/index.html.

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25

Si, Weiduo. "The effect of plant residue decomposition on microbial community composition in soil." Thesis, University of Newcastle Upon Tyne, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.324866.

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26

Southwell, Rebecca Victoria. "Exploring the reproducibility and environmental realism of pesticide fate processes in regulatory systems." Thesis, University of Warwick, 2018. http://wrap.warwick.ac.uk/101653/.

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Pesticides are vital for controlling agricultural pests and increasing crop yields; however, they can have detrimental effects on the environment and human health. Regulatory laboratory studies need to be carried out to assess the risks of a pesticide before it can be produced and sold. These regulatory studies tend to poorly predict pesticide fate and degradation in the field, likely due to specified test conditions not accurately representing the environment. This thesis focuses on the potential for adding greater environmental realism to regulatory-type tests, using the fungicide isopyrazam

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27

Amin, Bilal Ahmad Zafar. "Rôle des enzymes lignocellulolytiques dans le processus de biodégradation de résidus végétaux dans les sols : Influence de la qualité des résidus sur l’efficacité des enzymes et leur dynamique." Thesis, Reims, 2012. http://www.theses.fr/2012REIMS029/document.

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La décomposition des résidus végétaux joue un rôle essentiel dans le cycle biogéochimique des éléments nutritifs et influence le fonctionnement des écosystèmes. La composition biochimique intrinsèque des résidus végétaux est un facteur clé qui influe sur les processus de décomposition dans le sol tandis que la majorité des réactions biochimiques dans le sol, liées à la biodégradation des résidus végétaux, sont catalysées par des enzymes extracellulaires produites par les microorganismes. L'objectif global de cette étude était d'acquérir des connaissances fondamentales concernant l'impact de la

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28

Pessini, Milena Martins de Oliveira. "Resíduos de acetamiprid e thiamethoxam em tomate estaqueado (Lycopersicon esculentum Mill.), em diferentes modalidades de aplicação." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/11/11146/tde-15072003-141133/.

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No final dos anos 80, intensificaram-se as preocupações com os danos provocados à saúde do trabalhador rural e ao meio ambiente devido o uso indiscriminado de agrotóxicos. A descoberta de novos grupos de inseticidas, menos tóxicos e agressivos ao meio ambiente, vieram amenizar o problema. Entretanto, seus efeitos residuais ainda são pouco estudados, o que motivou esta pesquisa. Este trabalho visou avaliar o efeito dos inseticidas acetamiprid e thiamethoxam, pertencentes ao grupo dos neonicotinóides em diferentes modalidades de aplicação, com a finalidade de reduzir o número de pulveriza

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29

Ademoyegun, Olufemi Temitope. "Evaluation of some pharmaceutical and personal care products and pesticide residues in selected wastewater treatment plants and receiving watersheds in Eastern Cape, South Africa." Thesis, University of Fort Hare, 2017. http://hdl.handle.net/10353/2922.

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Emerging organic contaminants (EOCs) have been the focus of global environmental research for over three decades. EOCs have caused widespread concern due to their extensive use. As EOCs were designed to correct, enhance or protect a specific physiological, their target effects in humans and/or farm stocks are relatively well known and documented. However, there is limited knowledge about their unintended effects in the environment. To address the occurrence, distribution and fate of EOCs in the environment, efficient and reliable analytical methods are needed. The relatively low concentration,

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30

MORACCI, LUIZ F. S. "Residuos de agrotoxicos em lodo de estacao de tratamento de agua: validacao de metodologia analitica utilizando cromatografia liquida acoplada a espectrometria de massas em TANDEM (LC-MS/MS)." reponame:Repositório Institucional do IPEN, 2008. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11734.

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Made available in DSpace on 2014-10-09T12:55:14Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:06:02Z (GMT). No. of bitstreams: 0<br>Dissertação (Mestrado)<br>IPEN/D<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP

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31

Tüttinghoff, Hildegard. "Pesticide use in plant protection : descriptive analysis of decision making among rice farmers in Central Thailand /." Kiel : Wiss.-Verl. Vauk, 1991. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=002634473&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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32

Ribeiro, Inês de Amaral. "Validação de técnicas analiticas para determinação de residuos de pesticidas em vinho." Master's thesis, ISA, 2010. http://hdl.handle.net/10400.5/3076.

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Mestrado em Engenharia Alimentar - Instituto Superior de Agronomia<br>Vine is one of the most important crops in Portuguese agriculture. To counteract the effects of various diseases and pests that may occur in vineyards, a great part of the total pesticide consumption in Portugal is dedicated to this crop. Hence, it is of great importance to study the the presence of pesticide residues in wine. Food is the basis of human life, and wine is an important part of a regular diet of populations, as well as one of the most widely consumed beverages. therefore contamination with toxic pesticides

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33

Mackowiak, Cheryl L. "The Efficacy of Plant Residue Degradation Products on Phosphorus, Iron, Iodine, and Fluorine Bioavailability to Plants." DigitalCommons@USU, 2001. https://digitalcommons.usu.edu/etd/6758.

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Plant and animal wastes degrade in soils to form relatively stable humified compounds, which form ion complexes that affect the bioavailability of elements in the soil solution. Hydroponic studies with wheat and rice were conducted to characterize the effect of humic acid (HA) on phosphorus (P), iron (Fe), fluorine (F), and iodine (I) bioavailability. Ferrihydrite [Fe(OH)3] precipitation was greater on root surfaces without HA or synthetic chelates. Oxides such as ferrihydrite strongly adsorb P and provide exchange sites for metals. HA reduced this precipitate and increased P and Fe uptake. Hu

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34

Cogo, Juliana Pivetta. "Determinação de resíduos de pesticidas em plantas de arroz empregando QuEChERS modificado e GC-ECD." Universidade Federal de Santa Maria, 2008. http://repositorio.ufsm.br/handle/1/10439.

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Rice culture is an activity that has currently been gaining more importance due to its use in human feeding, allowing enough food and acceptable quality to the population. There is a great concern regarding the intensive use of pesticides, the main strategy employed in the countryside to combat and prevent plagues, as well as the residues resulting from such practice. This paper has been developed and validated on an analytical procedure, using the QuEChERS modified extraction approach and gas chromatography with electron-capture detection (GC-ECD) for the determination of residual insecticide

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35

Carvalho, Stella Pacheco Lombardi de. "Resíduos de deltametrina e de carbaril em dois sistemas de condução da cultura de tomate estaqueado (Lycopersicon esculentum Mill) e sua eficiência no controle da broca-pequena-do-fruto Neoleucinodes elegantalis (Guenée, 1854) (Lepidoptera: Crambidae)." Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/11/11146/tde-22092004-143434/.

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O objetivo deste estudo foi avaliar os inseticidas deltametrina e carbaril, de modo a abranger seus resíduos em dois sistemas de condução da cultura de tomate estaqueado (linha dupla, plantio comercial e linha simples, plantio experimental) e sua eficiência no controle da broca-pequena-do-fruto, a determinação dos resíduos nos substratos: frutos (visando à proteção à saúde pública), folhas e solo (como uma possível fonte de contaminação ambiental), a comparação dos níveis de resíduos encontrados nesses diferentes sistemas de condução, o controle obtido com os dois inseticidas e sistemas de con

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36

Kamota, Agathar. "Effect of BT maize on earthworm activity, silage quality and residue decomposition in the central Eastern Cape." Thesis, University of Fort Hare, 2011. http://hdl.handle.net/10353/413.

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There are concerns that genetic modification of maize with Bacillus thuringiensis may influence its structural and chemical composition which, together with the Cry1Ab proteins, may affect agro-ecosystem processes and feed quality. This study was aimed at investigating the expression of Cry1Ab protein in leaves, stems and roots of Bt maize and the effect of genetic modification (MON810) on activity of earthworms, silage quality and decomposition of residues in the field. In 2009/10 four maize cultivars; DKC61-25B, DKC61-24, PAN6Q-321B and PAN6777 were planted. Expression of Cry1Ab in leaves, s

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37

Johns, Josiah A. "Assessing Phosphorus Sources with a GIS-Based Phosphorus Risk Index in a Mixed-Use, Montane Watershed." BYU ScholarsArchive, 2017. https://scholarsarchive.byu.edu/etd/6559.

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Elevated phosphorus (P) loading of freshwater lakes and reservoirs often results in poor water quality and negative ecological effects. Critical source areas (CSA) of P in the watershed can be difficult to identify and control. A useful concept for identification of a CSA is the P risk index (P Index) that evaluates the P risk associated with distinct source and transport pathways. The objectives of this study were to create a GIS model that adapts the Minnesota (MN) P Index for use at the watershed scale in a mixed-use, mountain environment, and to evaluate its effectiveness relative to field

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38

Nguyen, Thi Hue, and Dinh Nghiem Ha. "Research on the status of chemical pesticide uses in agricultural activities in Phan Me commune, Phu Luong district, Thai Nguyen province." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-190448.

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Phan Me is a midland-mountainous commune of Phu Luong district, Thai Nguyen province, Vietnam where the agricultural activities are predominant occupation. The investigation on the use of plant protection products in here showed that chemical pesticides have been commonly used in agricultural activities. Although some local people have a good attitude in using plant protection products, the status of using chemical pesticides that were not recommended (like Vofatox) has been quite popular due to the old cultivation customs. The local people have not applied any measures for wastewater treatmen

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39

Alskaf, Kamal. "Conservation agriculture for sustainable land use : the agronomic and environmental impacts of different tillage practices and plant residue retention : farmer uptake of reduced tillage in England." Thesis, University of Nottingham, 2018. http://eprints.nottingham.ac.uk/51902/.

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Conservation Agriculture (CA) has potential benefits to the soil, crop yield, and the environment including reducing runoff, enhancing water retention and preventing soil erosion, in addition to increasing soil carbon sequestration and reducing greenhouse gas (GHG) emissions. Although CA is widely adopted in some areas of the world, it is still not widely adopted by UK farmers. The first overall aim of this project was to investigate the effects of tillage practice and residue retention, on soil physical properties, crop yield and GHG emissions. For this purpose, a split-plot field experiment

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MUNIZ, Maria Jacyelle dos Santos. "Influência dos inseticidas cipermetrina e metomil no desenvolvimento e promoção de crescimento vegetal das bactérias Burkholderia sp. UAGC867 e Pseudomonas sp. UAGC97." Universidade Federal Rural de Pernambuco, 2016. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/6554.

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Submitted by Mario BC (mario@bc.ufrpe.br) on 2017-03-10T13:49:44Z No. of bitstreams: 1 Maria Jacyelle dos Santos Muniz.pdf: 928440 bytes, checksum: 0a22b8f42ff3831d58110079cdfe6edd (MD5)<br>Made available in DSpace on 2017-03-10T13:49:44Z (GMT). No. of bitstreams: 1 Maria Jacyelle dos Santos Muniz.pdf: 928440 bytes, checksum: 0a22b8f42ff3831d58110079cdfe6edd (MD5) Previous issue date: 2016-03-16<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>Bacteria Plant Growth Promoting (BPGP) has been studied as environmental remediation, as many agricultural soils are contamin

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Landzela, Besule. "Effects of BT Maize (MON810) crop and its residues on selected soil biological properties and N and P release in a sandy loam soil from Alice, Eastern Cape, South Africa." Thesis, University of Fort Hare, 2013. http://hdl.handle.net/10353/d1007542.

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There are apprehensions that genetic modification of maize with Bacillus thuringiensis (Bt) may have negative effects on soil biodiversity, ecosystem processes and functions. This study aimed at determining the effect of Bt maize crop, Bt maize residues and its genetic modification on microbial biomass carbon (MBC), selected enzyme activities, vesicular arbuscular mycorrhizal (VAM) fungi and N and P release patterns. The study was conducted under field, glasshouse and laboratory conditions. In 2010/2011 season, four maize cultivars; DKC 61-25B (Bt), DKC 61-24 (non-Bt), PAN 6Q-321B (Bt) and PAN

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Nguyen, Thi Hue, and Dinh Nghiem Ha. "Research on the status of chemical pesticide uses in agricultural activities in Phan Me commune, Phu Luong district, Thai Nguyen province: Research article." Technische Universität Dresden, 2014. https://tud.qucosa.de/id/qucosa%3A29084.

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Phan Me is a midland-mountainous commune of Phu Luong district, Thai Nguyen province, Vietnam where the agricultural activities are predominant occupation. The investigation on the use of plant protection products in here showed that chemical pesticides have been commonly used in agricultural activities. Although some local people have a good attitude in using plant protection products, the status of using chemical pesticides that were not recommended (like Vofatox) has been quite popular due to the old cultivation customs. The local people have not applied any measures for wastewater treatmen

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Sgarbiero, Eduardo. "Resíduos de pirimifós-metil em grãos de trigo, milho e milho pipoca, em alguns de seus produtos processados e ação residual desse inseticida sobre Sitophilus spp. (Coleoptera, Curculionidae)." Universidade de São Paulo, 2002. http://www.teses.usp.br/teses/disponiveis/11/11146/tde-26072002-155740/.

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Os objetivos do presente trabalho foram avaliar a ocorrência / persistência / degradação de resíduos do inseticida organofosforado pirimifós-metil em grãos de trigo, milho e milho pipoca e em alguns de seus produtos processados, bem como a ação residual desse inseticida sobre Sitophilus spp. (Coleoptera, Curculionidae). O tratamento dos grãos foi realizado de modo a se obter a concentração teórica de 12 mg.kg-1 (ppm) de pirimifós-metil, tendo sido aplicados o equivalente a 5 litros de solução por tonelada de grãos. As amostras para estudos de resíduos foram tomadas aos zero, 15, 30, 60, 120 e

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Baumgartner, Denilson. "Residual do herbicida 2,4-D no solo e sua correlação com a produtividade e os parâmetros químicos e físicos do solo." Universidade Estadual do Oeste do Parana, 2013. http://tede.unioeste.br:8080/tede/handle/tede/153.

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Made available in DSpace on 2017-05-12T14:46:47Z (GMT). No. of bitstreams: 1 Denilson.pdf: 4098476 bytes, checksum: 61dc064a679354a8ec986c07c33444c3 (MD5) Previous issue date: 2013-07-05<br>Large amounts of herbicides are used in agriculture to control weeds that pose risks to crops, resulting in increased production cost of farms. Also, if not applied properly, its use can cause resistance of spontaneous plants and result in residues in the environment, in the soil, the water or in toxicity to the crops. The objective of this research was to evaluate the residue of the 2,4-D herbicide in so

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Fogdal, Hanna, and Adrian Baars. "Utilization of Forest Residue through Combined Heat and Power or Biorefinery for Applications in the Swedish Transportation Sector : a comparison in efficiency, emissions, economics and end usage." Thesis, KTH, Kraft- och värmeteknologi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-215767.

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Sweden has the goal of reaching a fossil independent transportation sector by 2030. Two ways to reach the goal is to increase the use of electric vehicles or produce more biofuels. Both alternatives could be powered by forest residue, which is an underutilized resource in the country. Electricity could be produced in a biomass fired Combined Heat and Power (CHP) plant, and biofuel could be produced in a biorefinery through gasification of biomass and Fischer-Tropsch process. When located in Stockholm County, both system can also distribute heat to the district heating system. It is however imp

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Souza, Antonio Pancracio de. "Atividade inseticida e modo de ação de extratos de meliáceas sobre Bemisia tabaci (Genn., 1889) Biótipo B." Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/11/11146/tde-04082004-135541/.

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Foram conduzidos experimentos com o objetivo de avaliar a bioatividade e o modo de ação de extratos aquosos e orgânicos de ramos de Trichilia pallida Swartz e extratos aquosos de sementes de nim, Azadirachta indica A. Juss, em relação a ninfas e ovos da mosca-branca Bemisia tabaci (Genn.) biótipo B. Inicialmente, verificou-se que o extrato aquoso de sementes de nim apresenta ação inseticida sobre ninfas de mosca-branca pelas vias translaminar, sistêmica e de contato, nas concentrações de 1; 0,5 e 0,3% (p/v), respectivamente. Em seguida, na comparação entre os extratos metanólico, etanólico, cl

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Penick, William Frazier. "Influence of Transplanter Modification and Previous Crop on the Production of No-Till Dark Tobacco." TopSCHOLAR®, 2013. http://digitalcommons.wku.edu/theses/1257.

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Dark tobacco (Nicotiana tabacum L.) has historically been produced usingconventional tillage practices. Soil is cultivated multiple times throughout a growing season leading to an increased incidence of soil erosion. No-till systems have been growing in popularity with the advent of new technology that has enabled the practice to be performed effectively and efficiently. With the recent expansion of no-till practices throughout the agricultural community, many crops have had success in producing comparable yields while reducing input costs and saving soil resources. For this experiment, a trad

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Franco, André Andrade. "Resíduos de deltametrina, aplicada em diferentes formulações, em compartimentos da cultura do pepino (Cucumis sativus L.) tutorado e ação do inseticida no controle da broca-das-cucurbitáceas Diaphania nitidalis (Cramer, 1782) (Lepidoptera: Crambidae)." Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/11/11146/tde-11112004-140048/.

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O desenvolvimento da agricultura, a modernização dos meios dos cultivos, buscando atender a um mercado exigente, tem-se baseado no uso de insumos agrícolas para garantir a produção de alta qualidade e de quantidade. Tais culturas demandam o uso de pesticidas, cujos resíduos, principalmente em hortaliças e frutas, são motivo de preocupação com a saúde dos consumidores e de operários que necessitam retornar às culturas tratadas com esses agrotóxicos. Os objetivos deste estudo foram: a) estudar o comportamento dos resíduos de deltametrina, de diferentes formulações, em frutos, folhas e solo; b) a

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Cochran, Michele A. "Effect of land application of fluidized-bed combustion residue on soil and plant characteristics of reclaimed surface-mined pastures, performance and mineral status of grazing steers and nutrient balance by sheep fed the forage." Thesis, Virginia Tech, 1988. http://hdl.handle.net/10919/43389.

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Meira, Ana Paula Gasques. "Ingestão de resíduos de agrotóxicos potencialmente contidos na dieta habitual de escolares." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/11/11141/tde-10112016-105057/.

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O uso de agrotóxicos no cultivo de alimentos é cada vez mais intenso e o Brasil é o país que mais utiliza esse recurso na agricultura. Esses compostos são potencialmente prejudiciais ao homem, podendo ocasionar diversos efeitos adversos na saúde, situação que contradiz o conceito de Segurança Alimentar e Nutricional. O objetivo geral desta pesquisa foi estimar a Ingestão Diária Máxima Teórica (IDMT) dos agrotóxicos potencialmente contidos na dieta habitual dos escolares e comparar com os parâmetros de ingestão estabelecidos pelos órgãos reguladores. Os dados de consumo alimentar e antropométri

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