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Dissertations / Theses on the topic 'Soybean disease'

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Published: 4 June 2021

Last updated: 2 February 2022

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1

Chen, Pengyin. "Genetics of reactions to soybean mosaic virus in soybean." Diss., Virginia Polytechnic Institute and State University, 1989. http://hdl.handle.net/10919/54781.

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The genetic interactions among 9 soybean [<i>Glycine max</i> (L.) Merr.] cultivars and 6 strains of soybean mosaic virus (SMV) were investigated. The objectives were to identify genes and/or alleles conditioning resistant and necrotic reactions to SMV and to determine the genetic relationships among resistance genes from cultivars exhibiting differential responses to the SMV strains. Seven SMV-resistant (R) cultivars (‘PI 486355’, ‘Suweon 97’, ‘PI 96983’, ‘Ogden’, ‘York’, ‘Marshall’, and ‘Kwanggyo’) were crossed in all combinations among each other and with susceptible (S) cultivars ‘Essex’

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2

Choi, Chang Won. "Soybean mosaic virus-soybean interactions : molecular, biochemical, physiological, and immunological analysis of resistance responses of soybean to soybean mosaic virus /." Diss., This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-07282008-134858/.

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3

Ma, Guorong. "Genetic analysis of soybean reactions to soybean mosaic virus." Diss., Virginia Tech, 1995. http://hdl.handle.net/10919/40253.

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The soybean [<i>Glycine max</i> (L.) Merr.] mosaic disease, caused by soybean mosaic virus (SMV), is one of the most important soybean diseases in many areas of the world. This research, conducted in four separate studies, was designed to identify and characterize new sources of genes for resistance to SMV and to investigate the interaction of soybean resistance genes and SMV strains.<br>Ph. D.

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4

Gunduz, Irfan. "Genetic Analysis of Soybean Mosaic Virus Resistance in Soybean." Diss., Virginia Tech, 2000. http://hdl.handle.net/10919/26439.

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This research was conducted to analyze the genetics of soybean mosaic virus (SMV) resistance in soybean [Glycine max (L.) Merr.] and to determine allelic relationships of SMV resistance genes and their interactions with SMV strain groups. In the first part of this study, the inheritance of SMV resistance in OX670 and 'Harosoy' was studied to determine the source and identity of the resistance gene/genes in OX670. Other researchers reported that OX670 possesses a single gene at a locus independent of Rsv1 and assigned the gene symbol Rsv2. Rsv2 was presumably derived from the cultivar 'Raiden'

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5

Menke, Ethan J. "Using spectral reflectance in soybean breeding: evaluating genotypes for soybean sudden death disease resistance and grain yield." Thesis, Kansas State University, 2017. http://hdl.handle.net/2097/38542.

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Master of Science<br>Department of Agronomy<br>William T. Schapaugh Jr<br>Sudden Death Syndrome (SDS) in soybean, (Glycine max ( L.) Merr.) caused by Fusarium virguliforme, is an increasing problem in commercial soybean production due to the yield loss associated with the disease. Screening for genetic resistance requires extensive visual evaluations. Canopy spectral reflectance may be an indirect tool for selection of SDS resistance as well as grain yield in large segregating populations. The objective of this study was to estimate SDS resistance and seed yield in large diverse soybean popula

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6

Hayes, Alec J. "Characterization of the soybean genome in regions surrounding two loci for resistance to soybean mosaic virus." Diss., Virginia Tech, 1998. http://hdl.handle.net/10919/11275.

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Soybean mosaic virus (SMV), has been the cause of numerous and often devastating disease epidemics, causing reduction in both the quality and quantity of soybeans worldwide. Two important genes for resistance to SMV are Rsv1 and Rsv4. Alleles at the Rsv1 locus have been shown to control resistance to all but the most virulent strain of SMV. This locus has been mapped previously to the soybean F linkage group. Rsv4 is an SMV resistance locus independent of Rsv1 and confers resistance to all strains of SMV. This locus has not been mapped previously. The purpose of this study is to investig

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7

Beruski, Gustavo Castilho. "Disease warning systems for rational management of Asian soybean rust in Brazil." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/11/11152/tde-25072018-163838/.

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The Asian soybean rust (ASR), caused by the fungus Phakopsora pachyrhizi, may promote significant damages in soybean crop. The disease is mainly controlled by sequential applications of fungicides following a calendarbased system. However, this practice disregards the weather favorability to recommend spraying to ASR control. The proposition of fungicide schemes to make the ASR control more efficient can be reached by the use of diseasewarning systems. Thus, the current study aimed to assess the performance of different disease-warning systems to determine better fungicide spraying schemes for

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8

Park, Dae-Sup. "Regulation of soybean disease resistance : proximal cell competency and distal cell potentiation /." The Ohio State University, 1998. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487953567770362.

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9

Mahmood, Hamida. "Computational mining for terminator-like genes in soybean." Thesis, Kansas State University, 2016. http://hdl.handle.net/2097/32724.

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Master of Science<br>Genetics Interdepartmental Program - Plant Pathology<br>Frank F. White<br>Sanzhen Liu<br>Plants and bacterial pathogens are in constant co-evolution to survive and sustain the next generation. Plants have two well-characterized levels of active defense -pathogens-associated molecular patterns (PAMPs)-triggered immunity (PTI) and effectors-triggered immunity (ETI). Some plants that are hosts for bacterial pathogens employing type three secretion system transcription activator-like (TAL) effectors have evolved a unique form of ETI, namely TAL effector-mediated ETI. TAL effec

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10

Yu, Yong Gang. "Molecular genetic analysis of host resistance to soybean mosaic virus." Diss., Virginia Tech, 1994. http://hdl.handle.net/10919/37253.

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11

Godwin, Michael Jason. "Molecular Mapping of Disease-Related Expressed Sequence Tags and Resistance Gene Analogues in Soybean." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/35550.

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Soybean has become one of the most important crops to the United States, resulting in a need to improve its disease resistance. The objectives of this study were to 1) design primers and develop PCR-based markers from disease-related expressed sequence tags (ESTs) and resistance gene analogues (RGAs), 2) assess the utility of such markers by diversity analysis of 12 soybean parental lines, and 3) search for possible association of the markers with known disease resistance genes by constructing a linkage map. The diversity analysis will allow this study to determine how well each marker can d

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12

Guimarães, Sabrina Santos. "Potencial de preparados de cavalinha (Equisetum sp.) na síntese de metabólitos de defesa em cotilédones de soja (Glycine max L.) e o efeito sobre o crescimento de Rhizoctonia solani, in vitro." Universidade Tecnológica Federal do Paraná, 2012. http://repositorio.utfpr.edu.br/jspui/handle/1/280.

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O controle de doenças em plantas geralmente é realizado com o uso de agroquímicos, que podem desencadear efeitos maléficos ao ser humano ou ao ambiente como um todo. Diversos trabalhos mostram o potencial de plantas medicinais no controle de fitopatógenos, tanto por sua ação fungitóxica direta, inibindo o crescimento micelial e a germinação de esporos, quanto pela capacidade de ativar o metabolismo de defesa das plantas, como o acúmulo de fitoalexinas, indicando a presença de moléculas com características elicitoras. Foram desenvolvidos dois experimentos na Universidade Tecnológica Federal do

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13

Cruz, David Ricardo Jimenez. "Influence of soils, nutrition, and water relations upon charcoal rot disease processes in Kansas." Thesis, Kansas State University, 2011. http://hdl.handle.net/2097/10747.

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Master of Science<br>Department of Plant Pathology<br>Christopher R. Little<br>Christopher R. Little<br>Charcoal rot, caused by Macrophomina phaseolina, is the most important soybean disease in Kansas. Several strategies have been recommended to control this disease including crop rotation, lower plant densities, biological control, plant resistance and tolerance, and fungicide application. However, those techniques have not been completely effective and the information concerning soil texture, irrigation and micronutrient fertility (particularly manganese) upon charcoal rot disease severity a

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14

Li, Xun. "Soybean rust in the United States assess its potential epidemic ranges and frequency based on disease limiting factors, disease attributes, and comparative epidemiology /." [Ames, Iowa : Iowa State University], 2007.

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15

Jeannotte, Richard. "Fatty acid biomarker analysis to characterize soil microbial communities in soybean agroecosystems with Sclerotinia stem rot disease." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=102988.

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Soybean (Glycine max (L.) Merr.) is one the major crops produced worldwide. However, soybean is susceptible to many diseases. Sclerotinia stem rot (SSR) disease caused by Sclerotinia sclerotiorum (Lib.) de Bary is considered one of the most important fungal diseases of soybean. It can be controlled by chemicals (e.g. fungicides), by breeding cultivars with disease resistance and by cultural control (e.g. increasing the width between rows, reducing plant populations). A promising and complementary method of controlling SSR disease in the field is the application of biological control agents. Bi

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16

Ellis, Margaret Lee. "The Soybean Seedling Disease Complex: Pythium spp. and Fusarium graminearum and their Management through Host Resistance." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1322495401.

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17

Podrebarac, Frances Ann. "The Relative Nitrogen Fixation Rate and Colonization of Arbuscular Mycorrhizal Fungi of Iron Deficient Soybeans." Thesis, North Dakota State University, 2011. https://hdl.handle.net/10365/29600.

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Soybeans (Glycine max L. Merr.) are a symbiont of two beneficial associations: biological nitrogen fixation (BNF) with Bradyrhizobium japonicum, and arbuscular mycorrhizal fungi (AMF). Within the Northern Great Plains of the USA, iron deficiency chlorosis (IDC) of soybean is a yield-limiting factor. The effects of IDC on BNF and AMF are not well defined. This study was conducted to determine the effects of IDC on BNF and AMF. A laboratory study was performed to compare three methods of measuring ureide-N, a product of BNF in soybeans. Field studies in soybean were performed at three loc

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18

Carroll, Brian D. "The effects of soybean diets on platelet aggregation and other cardiovascular disease risk factors in a porcine model /." Available to subscribers only, 2007. http://proquest.umi.com/pqdweb?did=1407502681&sid=16&Fmt=2&clientId=1509&RQT=309&VName=PQD.

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19

Gore, Michael Allen. "High-Resolution Mapping of the Region around the Soybean Virus Resistance Genes, Rsv1 and Rpv1." Thesis, Virginia Tech, 2000. http://hdl.handle.net/10919/34793.

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Soybean mosaic virus (SMV) and peanut mottle virus (PMV) are potyviruses that can cause serious yield reductions in soybean [Glycine max (L.) Merr.]. Virus resistant soybean cultivars have been released with alleles at the Rsv1 and Rpv1 locus that confer resistance to SMV and PMV, respectively. A high-resolution map-based cloning approach was undertaken to isolate Rsv1 and Rpv1 from soybean, with hopes of providing insight into this host-pathogen relationship. A mapping population of 1,056 F2 individuals was constructed from the cross of the resistant cultivar PI 96983 (Rsv1 and Rpv1) by the

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20

Lopez, Nicora Horacio Daniel. "Evaluation of Heterodera glycines - Macrophomina phaseolina Interactions on Soybean." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1468711278.

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21

Bluck, Grace M. "Soybean Yield Response in High and Low Input Production Systems." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1428078516.

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22

Kilic, Ozlem III. "Effect of dsRNA-containing and dsRNA-free hypovirulent isolates of Fusarium oxysporum on severity of Fusarium seedling disease of Essex soybean." Thesis, Virginia Tech, 1997. http://hdl.handle.net/10919/36965.

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Sixty-six isolates of <I>F. oxysporum</I> and <I>F. solani</I> were recovered from healthy and necrotic Essex soybean seedlings grown in naturally infested soil. These were tested for pathogenicity at 20 C and -0.01 MPa water potential in artificially infested, autoclaved field soil. Highly pathogenic, moderately pathogenic, and hypovirulent isolates of both species were identified. Fifty-seven <I>F. oxysporum</I> and nine <I>F. solani</I> isolates were tested for the presence of dsRNA. The presence of dsRNA was not associated with hypovirulence in <I>F. oxysporum</I> since some hypovirulent

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23

Broders, Kirk Dale. "Seed and Seedling Disease of Corn and Soybean in Ohio: The Role of Fusarium graminearum, Pythium species diversity, fungicide sensitivity, Pythium community composition, and soil properties in disease severity." Columbus, Ohio : Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1228096392.

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24

Karhoff, Stephanie. "Characterization of a Major Quantitative Disease Resistance Locus for Partial Resistance to Phytophthora sojae." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1555429203649991.

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25

Molina, Juan Pablo Edwards. "Yield losses of soybean due to target spot (Corynespora cassiicola), its genetic and chemical management." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/11/11135/tde-25072018-165739/.

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Target spot is a foliar disease of soybean that can produce yield losses. The disease has recently become a concern due to increasing intensity of its epidemics in the main soybean growing countries (USA, Brazil and Argentina). The goals of this study were to i) estimate the target spot control efficiency and yield response of labeled fungicides for the main soybean growing region of Brazil and identify factors affecting their performance; ii) characterize the relationship between target spot severity and soybean yield using meta-analytic techniques, and to identify patterns which allow unders

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26

Smith, Kelsey. "Identifying Frogeye Leaf Spot Resistance in Two Elite Soybean Populations and Analysis of Agronomic Traits in Resistant Lines." OpenSIUC, 2021. https://opensiuc.lib.siu.edu/theses/2843.

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Soybeans (Glycine max L.) are an important crop globally for its food, feed, and oilpurposes. It is impacted by many diseases, including Cercospora sojina, the causal agent of Frogeye Leaf Spot (FLS). Chemical and cultural controls to this fungal pathogen are insufficient, so genetic resistance must be acquired for adequate control. To this end, two recombinant inbred populations were screened in a greenhouse setting for their relative resistance to FLS, and their genomes were analyzed for contributing quantitative trait loci (QTL). In the Essex ́ Forrest population, one QTL was discovered on

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27

Overmyer, Keeley. "Impact of Cereal Rye and Oat Cover Crop Planting and Termination Date on Disease, Insects, and Yield in Continuous Soybean Systems." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1587667492954199.

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28

Batista, Renata Oliveira. "Diversidade genética de linhagens elites de soja quanto a resistência a doenças." Universidade Federal de Viçosa, 2012. http://locus.ufv.br/handle/123456789/4566.

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Made available in DSpace on 2015-03-26T13:39:48Z (GMT). No. of bitstreams: 1 texto completo.pdf: 1524967 bytes, checksum: f5f9e60c4fde67698fe27b61eaff3a59 (MD5) Previous issue date: 2012-02-17<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>Analyzing the damages caused by pathogens of soybean, lines with resistance genes are increasingly required. The objectives of this work were to estimate the genetic diversity among 32 elite breeding lines of soybean from early maturity and recommended to the central region of Brazil based on the reaction to mixture isolated of Cercospor

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Silva, Celso Luiz da. "Comportamento ambiental do tetraconazole no controle da ferrugem asiática pelo modelo de fugacidade, em dois sistemas de semeadura de soja (Glycine max L.)." [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/256840.

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Orientador: Luis Lonardoni Foloni<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Agrícola<br>Made available in DSpace on 2018-08-20T08:33:02Z (GMT). No. of bitstreams: 1 Silva_CelsoLuizda_D.pdf: 3484885 bytes, checksum: b67a930df8821384f225122b143d73ab (MD5) Previous issue date: 2012<br>Resumo: A utilização de pesticidas na agricultura é prática usual no controle de pragas, doenças ou plantas daninhas para que se consiga obter altos índices de produtividade e desta maneira atender à demanda mundial crescente de alimentos. Os pesticidas quando aplicados em co

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Chidburee, Siripun. "Biological control of soil-borne disease in soybean by denitrifying antagonistic bacteria : the possible role of reduced nitrogen compounds for control of plant pathogens." Thesis, University of Aberdeen, 1998. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU602299.

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A number of experiments were carried out to study the potential of denitrifying bacteria and reduced nitrogen compounds for control of soil-borne damping-off pathogens. Measurement of the rhizosphere pH of growing soybean roots was carried out in soil adjusted to different pH states and packed into sheet microcosms. The results showed that the rhizosphere pH of soybean was lower than the bulk soil. Nitrate reductase activity and nitrite production was then characterised for the rhizosphere of intact 14 day-old soybean roots that were incubated in nitrate substrates adjusted to different pH val

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31

Rufener, George Keith. "A genetic and biochemical study of the antibiosis mechanism of host-plant resistance in soybeans to the Mexican bean beetle /." The Ohio State University, 1987. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487335992902504.

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32

Ng, Sin Joe. "The Effect of Mid-season Foliar Fungicide and Insecticide, Applied Alone or in Combination, on Soybean Yield in Ohio." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1491986629962156.

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33

Yuan, Jiazheng. "MOLECULAR APPROACHES TO ANALYZE HORIZONTAL RESISTANCE AMONG PLANT SPECIES (MAIZE, SOYBEAN, AND ARABIDOPSIS) TO SYNTENIC FUSARIAL PATHOGENS (F. GRAMINEARUM AND F. VIRGULIFORME)." OpenSIUC, 2010. https://opensiuc.lib.siu.edu/dissertations/247.

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Numerous evidences showed that the resistance to syntenic fungal species Fusarium graminearum and Fusarium virguliforme infection in plants was partial, quantitative, and strongly influenced by environmental conditions. However, the molecular mechanisms underlying the resistance are still not fully understood. The objectives of this dissertation were to investigate the molecular mechanisms underlying the resistance in different plant species (mainly in maize, soybean, and Arabidopsis); identify and clone disease resistance genes; decipher their quantitative responses to Fusarial pathogens a

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Barcelos, Jéssica Pigatto de Queiroz. "Níquel no controle do oídio (Erysiphe diffusa) e ferrugem asiática (Phakopsora pachyrhizi) na cultura da soja /." Ilha Solteira, 2016. http://hdl.handle.net/11449/143465.

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Orientador: André Rodrigues dos Reis<br>Resumo: O níquel (Ni) é um micronutriente para as plantas por ser componente estrutural da urease, enzima que catalisa a degradação da ureia em dióxido de carbono e amônia, além disso, tanto Ni quanto a urease desempenham importante papel no metabolismo antioxidante da planta e no controle de doenças fungicas. Assim, objetivou-se com este trabalho avaliar o efeito da aplicação foliar de doses de Ni associado ou não à fungicidas do grupo das estrobilurinas em plantas de soja sobre o controle de doenças fungicas, a atividade de enzimas antioxidantes, a pro

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Nauth, Brittany J. "Soybean QTL Mapping and Candidate Gene Identification for Pythium irregulare and Phytophthora sojae Partial Resistance; and Root-Knot Nematode Induced Suppression of Gene Silencing." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1406151869.

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Barcelos, Jéssica Pigatto de Queiroz [UNESP]. "Níquel no controle do oídio (Erysiphe diffusa) e ferrugem asiática (Phakopsora pachyrhizi) na cultura da soja." Universidade Estadual Paulista (UNESP), 2016. http://hdl.handle.net/11449/143465.

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Rolling, William R. "A study of Phytophthora sojae Resistance in Soybean (Glycine max [L. Merr]) using Genome-Wide Association Analyses and Genomic Prediction." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1577706249228025.

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Alves, Daniel Pedrosa. "Herança e mapeamento genético da resistência do acesso PI 587905 ao isolado monopustular PPUFV02 de Phakopsora pachyrhizi, agente causal da ferrugem asiática da soja." Universidade Federal de Viçosa, 2012. http://locus.ufv.br/handle/123456789/4764.

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Made available in DSpace on 2015-03-26T13:42:25Z (GMT). No. of bitstreams: 1 texto completo.pdf: 1631185 bytes, checksum: 1a2583b9096adafba72549267dc3ce2e (MD5) Previous issue date: 2012-02-16<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>Asian soybean rust (ASR) caused by Phakopsora pachyrhizi fungus is the most important fungal disease that threatens soybean cultivation. Nowadays the main disease control procedure is administering fungicides from the triazole and strobilurin groups. However, using rust resistant or tolerating varieties is the best alternative for con

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Moura, Paula Caroline Silva. "Efeitos fisiológicos da aplicação de triazol e estrobilurina em soja." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/11/11144/tde-19042013-102707/.

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Com o aumento da população mundial, torna-se necessário a busca de tecnologias para o incremento da produção de alimentos. O cultivo da soja (Glycine max (L.) Merrill) destaca-se entre as atividades econômicas mundiais que apresentam crescimentos expressivos nas últimas décadas e apesar da crescente expansão territorial e produção agrícola, tem a produtividade influenciada por fatores externos e internos durante o cultivo, sendo o principal deles, a incidência de doenças. Atualmente, a doença mais preocupante é a ferrugem da soja, causada pelo fungo Phakopsora pachyrhizi Sydow & Sydow. Para o

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Dorighello, Dalton Vinicio [UNESP]. "Controle da ferrugem asiática da soja (Phakopsora packyrhizi) com óleo de café e bacillus spp." Universidade Estadual Paulista (UNESP), 2013. http://hdl.handle.net/11449/97230.

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Made available in DSpace on 2014-06-11T19:28:37Z (GMT). No. of bitstreams: 0 Previous issue date: 2013-08-02Bitstream added on 2014-06-13T20:18:25Z : No. of bitstreams: 1 dorighello_dv_me_botfca.pdf: 371371 bytes, checksum: fcef50ce447aae0f647c67810c05075b (MD5)<br>A ferrugem asiática da soja, causada por Phakopsora packyrhizi, se transformou na principal doença da cultura após a sua introdução no Brasil, em 2001. O controle é realizado, principalmente, com fungicidas químicos. Com relatos de populações do patógeno resistentes a estas moléculas, bem como de impactos negativos ao ambiente e a

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Dorighello, Dalton Vinicio 1985. "Controle da ferrugem asiática da soja (Phakopsora packyrhizi) com óleo de café e bacillus spp. /." Botucatu :, 2013. http://hdl.handle.net/11449/97230.

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Orientador: Wagner Bettiol<br>Banca: Antonio Carlos Maringoni<br>Banca: Regina Maria Villas Boas de C. Leite<br>Resumo: A ferrugem asiática da soja, causada por Phakopsora packyrhizi, se transformou na principal doença da cultura após a sua introdução no Brasil, em 2001. O controle é realizado, principalmente, com fungicidas químicos. Com relatos de populações do patógeno resistentes a estas moléculas, bem como de impactos negativos ao ambiente e a saúde pública, é necessário que novos métodos de controle sejam desenvolvidos. Entre esses, a utilização de agentes de biocontrole e produtos de or

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Gray, Monica Annmarie. "Sustainable Control of Ascaris Lumbricoides (Worms) in a Rural, Disease Endemic and Developing Community: A Systems Approach." [Tampa, Fla] : University of South Florida, 2008. http://purl.fcla.edu/usf/dc/et/SFE0002576.

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Mesquini, Renata Moreschi. "Componentes monocíclicos e quantificação de danos no patossistema Corynespora cassiicola - soja." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/11/11135/tde-13032013-165240/.

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A soja é a cultura de grãos mais importante no Brasil. Na safra de 2010/11 ocupou uma área de 24 milhões de hectares, se destacando como principal oleaginosa produzida e consumida no mundo. Alguns fatores podem limitar a produção da soja, entre eles as doenças. A mancha- alvo (Corynespora cassiicola) é frequente nas em todas as regiões produtoras de soja no Brasil e nos últimos anos tem se atribuído prejuízos crescentes à doença. Os objetivos deste trabalho foram: determinar a faixa ideal de temperatura para o crescimento micelial de diferentes isolados de C. cassiicola; verificar a esporulaçã

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Tsumanuma, Guy Mitsuyuki. "Controle de ferrugem asiática e desempenho de duas cultivares de soja submetidas a diferentes fungicidas e épocas de aplicações." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/11/11136/tde-14042009-092855/.

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O fungo Phakopsora pachyrhizi Syd. & Syd, representa grande ameaça à sojicultura nas principais regiões produtoras do mundo, onde perdas significativas foram relatadas. Na quantificação de danos causados por esta doença muitas são as variáveis a serem estudadas como Área abaixo da curva de progresso da doença (AACPD), Absorção da área foliar sadia (HAA) e Duração da área foliar sadia (HAD), além das curvas de progresso da doença. Visando seu controle químico torna-se necessário a aplicação de defensivos agrícolas, os quais podem afetar o crescimento e metabolismo das plantas, resultando em con

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Arruda, Josicléa Hüffner. "Ação de agroquímicos no controle de mofo branco em soja." Universidade Tecnológica Federal do Paraná, 2014. http://repositorio.utfpr.edu.br/jspui/handle/1/759.

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A soja é uma das principais commodities produzidas no mundo. Entretanto, tem sua produtividade reduzida, significativamente, devido às doenças, dentre estas o mofo branco, causado pelo fungo Sclerotinia sclerotiorum, com expressiva severidade em regiões de clima ameno e úmido. O controle da doença, incluindo o uso de fungicidas, é pouco eficiente. Assim, o trabalho teve por objetivo avaliar a eficiência de herbicidas e adubos foliares à base de fosfito de potássio no manejo do mofo branco em soja, bem como a ação dos produtos, indução da síntese de fitoalexinas e das enzimas peroxidases e sup

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Costa, Lilian Lúcia [UNESP]. "Eficiência de volumes e pontas de pulverização centrífuga e hidráulica na distribuição e deposição da calda no controle da ferrugem asiática da soja." Universidade Estadual Paulista (UNESP), 2013. http://hdl.handle.net/11449/106305.

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Made available in DSpace on 2014-06-11T19:35:37Z (GMT). No. of bitstreams: 0 Previous issue date: 2013-04-19Bitstream added on 2014-06-13T20:26:33Z : No. of bitstreams: 1 000739580.pdf: 1024798 bytes, checksum: 203dc10148a85c6f9d10850cfcbc59ef (MD5)<br>Para o controle eficiente da ferrugem asiática da soja [Phakopsora pachyrhizi (H. Sydow & P. Sydow)] e redução dos custos de produção, o estudo e desenvolvimento de novas técnicas e equipamentos de aplicação de produtos fitossanitários tornam-se indispensáveis para se obter melhor distribuição da pulverização e colocação do produto no alvo des

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Costa, Lilian Lúcia. "Eficiência de volumes e pontas de pulverização centrífuga e hidráulica na distribuição e deposição da calda no controle da ferrugem asiática da soja /." Jaboticabal, 2013. http://hdl.handle.net/11449/106305.

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Orientador: Marcelo da Costa Ferreira<br>Banca: Maria Aparecida Pessoa da Cruz Centurion<br>Banca: Núbia Maria Corrêa<br>Banca: Carlos Gilberto Raetano<br>Banca: Fábio Henrique Rojo Baio<br>Resumo: Para o controle eficiente da ferrugem asiática da soja [Phakopsora pachyrhizi (H. Sydow & P. Sydow)] e redução dos custos de produção, o estudo e desenvolvimento de novas técnicas e equipamentos de aplicação de produtos fitossanitários tornam-se indispensáveis para se obter melhor distribuição da pulverização e colocação do produto no alvo desejado. Assim, o trabalho teve como objetivos determinar a

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Scott, Kelsey L. "Studies in the Management of Pythium Seed and Root Rot of Soybean: Efficacy of Fungicide Seed Treatments, Screening Germplasm for Resistance, and Comparison of Quantitative Disease Resistance Loci to Three Species of Pythium and Phytophthora sojae." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1524147394255409.

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Ortega, Maria Andrea. "Identification of Molecular Markers Associated with the Rps8 locus in Soybean and Evaluation of Microsporogenesis in Rps8/rps8 Heterozygous Lines." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1259772038.

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Carvalho, Fernando Kassis [UNESP]. "Influência de adjuvantes de calda no depósito e deriva em aplicações aéreas e terrestres." Universidade Estadual Paulista (UNESP), 2013. http://hdl.handle.net/11449/90613.

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Made available in DSpace on 2014-06-11T19:24:42Z (GMT). No. of bitstreams: 0 Previous issue date: 2013-02-28Bitstream added on 2014-06-13T20:52:27Z : No. of bitstreams: 1 carvalho_fk_me_botfca.pdf: 640167 bytes, checksum: f16d9da779638ef775ffc06b08e8642c (MD5)<br>A ferrugem asiática atualmente é a principal doença da cultura da soja. Tem como características a rápida disseminação e difícil controle por iniciar na parte inferior da planta, onde a penetração das gotas é mais difícil. O uso de gotas finas tem sido utilizado com o intuito de melhorar a penetração e aumentar a eficiência dos prod

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