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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
121

Simbiose micorrízica arbuscular em porta-enxertos de videira (Vitis spp.)

LEMOS, Ivanice Borges 31 January 2008 (has links)
Made available in DSpace on 2014-06-12T15:02:41Z (GMT). No. of bitstreams: 1 license.txt: 1748 bytes, checksum: 8a4605be74aa9ea9d79846c1fba20a33 (MD5) Previous issue date: 2008 / Conselho Nacional de Desenvolvimento Científico e Tecnológico / Avaliou-se a simbiose micorrízica na rizosfera de porta-enxertos de videira IAC (313, 572 e 766), SO4, 420A, Paulsen e Harmony, no campo localizado em Petrolina, PE, em 2004 e 2006. Em 2004, a densidade de glomerosporos (DG) na rizosfera variou de 26 a 82, enquanto que em 2006 houve diminuição, variando de 5 a 98/100 g de solo. A colonização micorrízica (CM) avaliada apenas em 2006, variou de 24,4 a 64,6 %. A produção de glomalina foi maior em 2004, variando de 2,42 a 4,05 mg/g e diminuindo em 2006 para 0,01 a 0,05 mg/g de solo. Foram identificados 26 táxons de FMA na rizosfera, sendo as espécies de Glomus predominantes. Os FMA formam simbiose, com os porta-enxertos e diferenças significativas na associação podem estar relacionadas aos genótipos. Objetivando verificar a eficiência micorrízica no crescimento e nutrição de videira var. Harmony foi realizado um experimento com duas espécies de FMA (mistura de Entrophospora infrequens e G.etunicatum e com Glomus etunicatum) e 4 níveis de P (0, 20, 40 e 60 mg de P). Após 120 dias, foram avaliadas: área foliar, biomassa seca (BS) e fresca (BF) aérea e radicular, conteúdo nutricional, CM e DG. Houve efeito da inoculação, da adubação fosfatada e interação entre esses fatores. As médias de CM e a DG alcançaram 25,39% e 6,49 glomerosporos/50 g de solo, respectivamente, sem diferenças significativas entre as espécies de FMA testadas. G. etunicatum promoveu maior crescimento das plantas, enquanto a inoculação com mistura de E. infrequens propiciou maior conteúdo de nutrientes na raiz
122

Sistemas de produção de porta-enxertos de seringueira /

Guiducci, Erika Perches. January 2014 (has links)
Orientador: Antonio Baldo Geraldo Martins / Banca: Erivaldo José Scaloppi Junior / Banca: Sergio Valiengo Valeri / Resumo: A seringueira é propagada vegetativamente pelo método da enxertia e suas sementes usadas para a obtenção dos porta-enxertos. Problemas ambientais relacionados ao desenvolvimento das plantas pelo sistema convencional e o estabelecimento de normas (Resolução SAA - 154/2013 do Estado de São Paulo) para a formação de mudas têm motivado estudos de novos processos para formação de porta-enxertos. O objetivo deste trabalho foi avaliar a produção suspensa de porta-enxertos de seringueira em ambiente protegido e a céu aberto. Foi realizado um experimento de semeadura e um de desenvolvimento de portaenxertos no município de Tanabi - SP. Comparou-se a germinação e o vigor de sementes de seringueira entre diferentes sistemas de semeadura: convencional em canteiros de germinação e direta em substrato sobre bancada protegida e a céu aberto. Foram avaliados o índice de velocidade de emergência e a porcentagem de germinação das sementes em cada sistema de semeadura. Os resultados obtidos nas condições experimentais permitiram concluir que o sistema de semeadura direta em substrato em ambiente protegido é o mais indicado por proporcionar melhor germinação das sementes e adequação à legislação, e que é fundamental a utilização de sementes com alto vigor. O experimento de desenvolvimento de portaenxertos avaliou o sistema de produção de mudas convencional nas condições de campo em comparação com o sistema suspenso em bancada, em ambiente protegido e a céu aberto. Foram avaliados o diâmetro a cinco cm do colo, a altura, a área foliar, o volume de raiz e a matéria seca da parte aérea e do sistema radicular das plantas. Concluiu-se que, na região do planalto ocidental paulista, a produção de porta-enxertos de seringueira deve ser conduzida em sistema de bancada protegida e com uso de substrato orgânico / Abstract: Rubber trees are propagated by grafting method and its seeds used for obtaining the rootstocks. Environmental problems related to rootstocks development by the conventional system and the establishment of rules (Resolução SAA - 154/2013 of the São Paulo State) for production in suspended nurseries have motivated researches of new processes for rubber rootstocks production. The objective of this study was to evaluate rubber rootstocks production in suspended containers in a greenhouse and open skies. An experiment of seeding and another of development of rootstocks were conducted in Tanabi - SP/Brazil. The experiment of seeding compared the germination and vigor of rubber seeds among different seeding systems: conventional in soil beds, direct seeding on substrate in suspended containers in a greenhouse and at open skies. Emergence speed index and percentage of germination of seeds were evaluated in each seeding system. The results showed that the direct seeding system in the greenhouse is the most suitable for providing better seeds germination and adaptation to legislation, and that it is essential to use high vigor seeds. The experiment of development of rubber rootstocks evaluated the conventional production system under field conditions compared to greenhouse and open skies suspended containers systems. Diameter at five cm from colon, height, leaf area, root volume and dry weight of shoot and root system of the rootstocks were evaluated. It was concluded that, in the São Paulo Western Plateau region, the production of rubber rootstocks should be conducted in the greenhouse suspended containers system using an organic substrate / Mestre
123

Hardware Implementation of a Stimulus Artifact Rejection Algorithm in Closed-loop Neuroprostheses

Soong, Chia-Wei 18 July 2008 (has links)
No description available.
124

"Acqua di vita" ed esegesi biblica nella versione latina del Sefer Sha'are Orah / "Eau de vie" et exégèse biblique dans la version latine du Sefer Sha‘are Orah / "Water of Life" and Biblical Exegesis in the Latin Version of the Sefer Sha'are Orah

Mantovani, Margherita 24 February 2017 (has links)
Le travail vise à reconstruire l’interprétation de la Cabbale fourni par Paolo Ricci (m. 1541), en ce qui concerne la réception du Sefer Sha‘are Orah (Livre des portes de lumière [ShOr]) de Yosef Giqaṭilla (XIII siècle). Après une introduction générale et une présentation du status quaestionis, la première partie de la thèse se focalise surtout sur le milieu culturel du ShOr, sur son auteur et sur ses possibles sources. La deuxième partie offre une reconstruction de la vie intellectuelle du traducteur du ShOr, Paolo Ricci, en accordant une attention particulière aux relations (historiques et / ou culturelles) avec certains humanistes de l'époque. Un intérêt particulier est réservé au rôle de Pic de la Mirandole et de Johannes Reuchlin, ainsi qu’à la rencontre avec Ellenbog, à l’affrontement avec Johannes Eck, et aux épitres de Pirckheimer. On ce concentre donc sur la possible influence de sources du judaïsme médiéval (en particulier, du ShOr) dans l’élaboration du programme de réforme religieuse d’Agrippa de Nettesheim. Le chapitre sur la «systématisation» de la Cabbale fournie par Ricci vise à fournir une explication possible pour le choix de traduire précisément ShOr. L'analyse est ensuite reliée à l’élaboration d’un court écrit (In cabalistarum seu allegorizantium eruditionem Isagoge), conçu comme un ouvrage d’introduction à la traduction du ShOr, d’importance fondamentale pour la définition de la Cabbale de la part de Ricci. La dernière question abordée concerne l’histoire de la réception de la version latine et de la pensée de Ricci au XVIe et au XVIIe siècle. Deux annexes suivent, dont la première contient une réflexion d’Ernesto Buonaiuti sur le problème de l’unification entre l'homme et Dieu dans la pensée de Pic. La deuxième annexe inclut le premier chapitre du ShOr, selon la traduction latine préparée par Ricci : c’est principalement grâce à cette section que le texte a survécu. / The work aims to reconstruct the interpretation of the Kabbalah provided by Paolo Ricci (d. 1541), with particular focus on the Latin reception of the Sefer Sha‘are Orah (Book of the Gates of Light [ShOr]) by Yosef Giqaṭilla (13th century). After a general introduction and a presentation of the status quaestionis, the first part of the thesis focuses on the cultural milieu of ShOr, on his author and his possible sources. The second part pays particular attention to the intellectual life of Paolo Ricci, mainly to his relations with important humanists of his period. The work then focuses on the possible influence, among other sources, played by the Latin version by Ricci of ShOr on the development of the reformation of magic proposed by Agrippa from Nettesheim. The chapter on Ricci’s theorization of the Kabbalah aims to explore some aspects of his exegetical method and seeks to give a possible explanation for the choice of its translation. The analysis is then related to a short writing (In cabalistarum seu allegorizantium eruditionem Isagoge), conceived by Ricci as an introductory work to ShOr and fundamental to understand his conception of the Kabbalah. The last question concerns the history of the reception of Ricci’s thought as well as the fortune of the Latin version of ShOr between the 16th and the 17th centuries. Two annexes follow, the first of which contains a reflection of Ernesto Buonaiuti on the problem of the unification between man and God in the thought of Pico. The second appendix includes the first chapter of ShOr, according to the Latin translation offered by Ricci: it is mainly thanks to this section that the text survived.
125

Conservação de hastes porta-borbulhas de citros de diferentes idades, em vários períodos de armazenamento / Conservation of bud woods of citrus plants at different ages and storage periods

Gomes, Sebastião Antonio 23 September 2004 (has links)
Submitted by Reginaldo Soares de Freitas (reginaldo.freitas@ufv.br) on 2017-06-02T13:22:28Z No. of bitstreams: 1 texto completo.pdf: 1744259 bytes, checksum: d8164ccbe5e63c6ac8da1af073a77b08 (MD5) / Made available in DSpace on 2017-06-02T13:22:28Z (GMT). No. of bitstreams: 1 texto completo.pdf: 1744259 bytes, checksum: d8164ccbe5e63c6ac8da1af073a77b08 (MD5) Previous issue date: 2004-09-23 / Este trabalho teve por objetivo determinar o efeito do período de armazenamento e da idade das hastes porta-borbulhas de citros na viabilidade das borbulhas e no crescimento das brotações. As hastes porta-borbulhas em estudo foram dos cultivares laranjeiras 'Baianinha' e 'Pêra Rio' e limeira ácida 'Tahiti'. As hastes foram desinfestadas (com hipoclorito de sódio a 1% de cloro ativo), e tratadas com 2,4-D (20 μmol L-1) (para fixação dos pecíolos) e fungicidas [Cercobin 700 PM (1,0 g L-1 de água) mais Captan Hokko® (1,0 g L-1 de água)], e logo após foram acondicionadas em sacos de polietileno transparente de baixa densidade e armazenadas em câmara fria a 5 ± 1 °C, durante 60 dias para o 'Tahiti' e 60 e 120 dias para os outros cultivares. Para a limeira ácida 'Tahiti' utilizou-se o delineamento em blocos casualizados com disposição dos tratamentos em esquema fatorial, cujos fatores foram período de armazenamento (com dois níveis: 0 e 60 dias) e idade das hastes (com três níveis: 100, 120 e 140 dias). Para as laranjeiras 'Baianinha' e 'Pêra Rio' utilizou-se o delineamento em blocos casualizados com disposição dos tratamentos em esquema fatorial, cujos fatores foram cultivares (com dois níveis: 'Baianinha' e 'Pêra Rio'), período de armazenamento (com três níveis: 0, 60 e 120 dias) e idade das hastes (com três níveis: 100, 120 e 140 dias). Em ambos os casos foram utilizadas quatro repetições e a unidade experimental foi constituída por seis hastes porta-borbulhas. Foram avaliadas a viabilidade das borbulhas, o crescimento das brotações, teor de matéria seca, teores de açúcares solúveis totais e amido. O aumento do período de conservação das hastes reduziu a viabilidade das borbulhas para os cultivares 'Baianinha' e 'Tahiti'; a viabilidade das borbulhas aumentou com a idade das hastes para a 'Pêra Rio'. A idade das hastes não influenciou o crescimento das brotações, e a altura das brotações foi maior nos enxertos provenientes de hastes que não foram armazenadas para os três cultivares. Constatou-se para os cultivares laranjeiras 'Baianinha' e 'Pêra Rio' que não houve influência do armazenamento e da idade das hastes no teor de matéria seca, e para o 'Tahiti' ocorreu aumento da matéria seca com o aumento da idade das hastes. Observou-se que para os açúcares solúveis totais ocorreu menor perda para as hastes com idade de 140 dias para a 'Baianinha'; para a 'Pêra Rio' não houve efeito da idade sobre o teor de açúcares solúveis totais; para o 'Tahiti' observou-se decréscimo no teor de açúcares com o aumento do armazenamento. Para o amido, os maiores teores ocorreram para as hastes com idade de 120 e 140 dias e armazenadas por 60 dias, para a 'Baianinha'; para a 'Pêra Rio' ocorreu menor perda para as hastes com idade de 100 dias; para o 'Tahiti' observou-se maior teor de amido para as hastes que não foram armazenadas. A variável viabilidade das borbulhas não se correlacionou com os teores de açúcares solúveis totais e amido para os três cultivares. / This work aimed to determine the effect of storage period and age of budsticks of citrus cultivars on bud viability and shoot growth. The budsticks studied originated from the orange cultivars 'Baianinha' and 'Pêra Rio' and the acid lime cultivar 'Tahiti'. The sticks were disinfested (with sodium hypochloride at 1% active chlorine), and treated with 2,4-D (20 μmol L-1) (for petiole fixation) and fungicides [Cercobin 700 PM (1.0 g L-1 of water) plus Captan Hokko® (1.0 g L-1 water)], being immediately placed in low density transparent polyethylene bags and stored in cold chamber at 5 ± 1 °C over 60 days for 'Tahiti' and 60 and 120 days for the other cultivars. For the acid lime cultivar 'Tahiti', a randomized block design was used with the treatments arranged in a factorial scheme, the factors being the storage periods (0 and 60 days) and stick age (100, 120 and 140 days). For the orange cultivars 'Baianinha' and 'Pêra Rio', a randomized block design was used with the treatments in a factorial scheme, with the factors being the cultivars ('Baianinha' and 'Pêra Rio'), storage periods (0, 60 and 120 days) and stick age (100, 120 and 140 days). In both cases, four repetitions were used with the experimental unit being constituted by six budsticks. Bud viability, shoot growth, dry matter content, total soluble sugar and starch contents were evaluated. Increased sticks conservation period reduced bud viability for the cultivars 'Baianinha' and 'Tahiti'; bud viability increased with sticks age for 'Pêra Rio'. Sticks age did not influence shoot growth, with shoot height being higher in grafts originating from stick that had not been stored for the three cultivars. For the orange cultivars 'Baianinha' and 'Pêra Rio', stick storage and age did not have any effect on dry matter content, and for 'Tahiti', dry matter increased with the increase of stick age. A smaller loss of total soluble sugars was observed for stick at 140 days of age for 'Baianinha'; 'for Pêra Rio,' no age effect was observed on total soluble sugar content, for 'Tahiti, 'there was a decrease in the sugar content with increase of the storage period. The highest starch contents occurred for sticks at 120 and 140 days of age, stored for 60 days for 'Baianinha'; for 'Pêra Rio,' a smaller loss occurred for 100-day -old stick; for 'Tahiti, ' higher starch content was observed for sticks that had not been stored. The variable bud viability did not correlate with the contents of total soluble sugars and starch for the three cultivars.
126

Fenomén jménem PORTA / The Phenomenon named PORTA

Hanzlík, Lubomír January 2021 (has links)
(in English) This thesis aims to present Porta Music Festival as a cultural and social phenomenon of the second half of the 1980s in Czechoslovakia on the basis of archival sources, secondary literature and our questionnaire survey.
127

RACCOLTA E SMALTIMENTO DEI RIFIUTI SOLIDI URBANI: STIMA DI FUNZIONI DI COSTO IN ITALIA / ESSAYS ON COLLECTION AND DISPOSAL COSTS OF MUNICIPAL SOLID WASTE IN ITALY

ROBU, CRISTINA MANUELA 24 June 2015 (has links)
Questa tesi ha come obiettivo quello di contribuire all'analisi empirica della struttura dei costi del ciclo dei rifiuti solidi urbani in un campione di 534 comuni italiani, per un periodo di sette anni, dal 2004 al 2010. Dopo una panoramica sia delle varie fasi del servizio RSU che del funzionamento del settore in Italia, nel primo capitolo, il secondo analizza la letteratura empirica delle funzioni di costo, con particolare attenzione per i lavori più recenti, tra cui anche i pochissimi italiani sul tema. L’argomento del terzo capitolo riguarda lo studio della presenza di economie di scala e di densità nel settore dei rifiuti utilizzando una specificazione translogaritmica per la funzione di costo stimata con il metodo SUR. L'ultimo capitolo si propone di fornire risposte a domande molto attuali come: la raccolta porta a porta è più costosa? E' meglio smaltire in discarica i rifiuti residui o bruciarli? Data una certa quantità di rifiuti da smaltire, esiste una quantità ottimale da incenerire? Inoltre, dato che molte comunità usano contemporaneamente diversi siti di smaltimento, qual è il numero ottimale di siti per portare i propri rifiuti indifferenziati? / This thesis aims to contribute to the empirical analysis of the cost structure of municipal solid waste management in a sample 534 Italian municipalities, for a period of seven years, from 2004 to 2010. After giving an overview both of the various phases of the MSW service and of the functioning of the sector in Italy in the first chapter, the second chapter reviews the cost function studies, with particular emphasis on recent years including also the very few Italian papers on the topic. This topic of the third chapter the study of the presence of scale and density economies in the Italian waste sector using a translogarithmic specification estimated with the SUR method. The last chapter aims to provide answers to very actual questions as: is the door to door collection more expensive? Is it better to burry residual waste or to incinerate it? Given a certain amount of garbage, is there an optimal quantity to be incinerated? Moreover, given that many communities use contemporaneously different dumpsites, which is the perfect number of disposal sites for unsorted waste?
128

La science et les secrets de la nature à Naples à la Renaissance : la magie naturelle de Giovan Battista Della Porta / Science and the secret of nature in Naples in the Renaissance : the natural magic of Giovan Battista Della Porta

Verardi, Donato 01 April 2017 (has links)
La thèse propose une reconstruction de la pensée philosophique et scientifique de Giovan Battista della Porta (1535-1615). En particulier, le travail est consacré à la reconstruction de la notion de « secrets naturels » au cœur de la pensée philosophique de Della Porta et de son projet de réforme de la magie naturelle. Comme je l’ai montré, la rationalisation du «secret de la nature» chez Della Porta est reliée d'un côté aux problèmes de démonologie, de l'autre côté à celles de l'astrologie.La recherche est divisée en quatre parties : la première est consacrée à l’historiographie et à la réception de Della Porta. Le sens de la magie naturelle est étudié du point de vue de la réception immédiate de la pensée de Della Porta, et notamment le problème posé par le statut qu’elle accorde à l’action des démons. Il s’agit aussi de montrer comment la question reste discutée dans l’historiographie récente. La seconde partie est consacrée a la relation de la pensée de Della Porta avec le milieu de l’aristotélisme napolitain. Il s’agit de comprendre la notion de « secrets de la nature » à la lumière des débats relatifs à la connaissance du singulier et de montrer que le problème du statut de la magie naturelle rencontre à Naples les discussions autour de l’épistémologie médicale et de la conception avicennienne de la « forme spécifique ». La troisième partie est consacrée à la question de la causalité et au débat relatif à l’astrologie, ainsi qu’ au sens à donner à la sympathie par laquelle est expliqué l’influx céleste. L’un des objectifs majeurs est de montrer comment Della Porta est amené à limiter le sens que Ficin a donné à la sympathie. Della Porta réinterprète ainsi la conception des « images astrologiques » d’Albert le Grand. La quatrième partie porte sur la tension entre amitié et sympathie dans le contexte de l’astrologie, pour reprendre la question de la ressemblance au cœur des traités de physionomie de Della Porta et de sa méthode de recherche relative aux « secrets de la nature ». Cette méthode s’appuie sur la notion d’une causalité qui touche non la substance, mais les accidents, c’est-à-dire des « particularités individuelles », telles que le mouvement, la couleur, la figure etc., sur lesquelles Della Porta fait reposer la connaissance du singulier. / This thesis focuses on the scientific and philosophical though of Giovan Battista Della Porta (1535-1615). In particular, the purpose of my thesis is to analyse and “reconstruct” the notion of “secret of nature” in Della Porta’s philosophy and in his project for the reformation of natural magic.As I have shown here, Della Porta’s rationalization of the “secret of nature” is connected either with demonological issues and with astrological problems.The thesis is divided into four parts. In the first part, the historiography and reception of the philosophical thought of Della Porta are discussed. The accent is put on the meaning of natural magic with particular regard to the role he assigns to demons. Here I show that the issue is still debated in the recent historiography. The second part introduces the relationship between Della Porta’s thought and the neapolitan aristotelianism. I proposed, here, to understand the notion of “secret of nature” in light of the debates related to the knowledge of “singular”. I have shown that the matter of the statute of natural magic is related to the discussions on the medical epistemology and on the Avicennean conception of forma speciei. The third part deals with the matter of causality and the debate about astrology. Also, it analyses the meaning of the concept of “sympathy”, interpreted as celestial influence. I have shown that Della Porta reinterprets the concept of “sympathy” of Ficino as well as the notion of “astrological image” of Albert the Great. In the fourth part, I studied the relationship between the concepts of “friendship” and “sympathy” in the astrological debate. Then, I studied the principle of “similarity” in Della Porta’s phisiognomy books and in his research methodology about “secrets of nature”. I have shown that this research methodology is based on a concept of causality not concerning the substance, but the “accidents”, i.e. the “individual particularities”: the movement, the color, the figure, etc. According to Della Porta, the knowledge of the singular is based on these “individual particularities”.
129

Komentovaný překlad spisu Liber de coronatione Karoli IV. imperatoris Jana Porty z Annonay (Iohannes Porta de Annoniaco) / Iohannes Porta de Annoniaco, Liber de coronatione Karoli IV. imperatoris - commentary and translation

Pavlíková, Anna January 2021 (has links)
This thesis deals with the work Liber de coronatione Karoli IV. imperatoris (Book on the coronation of Emperor Charles IV) from the middle of the 14th century. Its author Iohannes Porta de Annoniaco was a personal secretary and confidant of Cardinal Peter of Colombier who was commissioned by Pope Innocent VI to perform the imperial coronation of Charles IV in Rome in 1355. As an eyewitness, Iohannes Porta describes the cardinal's and Charles's journey to Rome, focuses in more detail on the events in Rome, and above all, the very act of coronation. The author also deals with the following events of the return journey of both the cardinal and the emperor. In addition, he included in his work copies of documents and correspondence related to the coronation. The text offers a valuable source of direct testimony about the course of Charles's Italian journey. The thesis aims to present a Czech translation of selected parts of Iohannes Porta's text, supplemented by explanatory notes, the purpose of which is to clarify certain factual or linguistic particularities of the text. The translation is accompanied by an introductory study. Its first part explains the historical context of Charles's imperial coronation, the next part focuses on the author and the overall characteristics of the work.
130

Efeito da morte súbita do citros sobre estado nutricional das var. Pera rio e Natal no limoeiro Cravo / Effect of the sudden death of the citrus on the nutritional state of the varieties pêra rio and natal in the lemon tree cravo

Bertolotti, Luciana 27 January 2005 (has links)
A citricultura brasileira é a maior do mundo, sendo uma das principais culturas produzidas no Brasil, no entanto há 5 anos esta vem sofrendo com a chegada da morte súbita do citros, principalmente no sul do Triângulo Mineiro e norte de São Paulo. Com o objetivo de avaliar o estado nutricional de plantas em estágios de sintomatologia da morte súbita do citros e fazer o acompanhamento da fertilidade do solo nessas áreas para fim de comparação da eficiência de absorção dos nutrientes, foram conduzidos dois experimentos em um pomar comercial situado no município de Frutal -MG. Utilizaram-se duas variedades de citros, “Pêra Rio” e “Natal”, sobre o limoeiro “Cravo” ambas com 14 anos. O delineamento experimental foi o inteiramente casualizado com quatro tratamentos (plantas sadias e em três estágios da morte súbita) e quatro repetições, sendo dispostos em parcelas subdivididas no tempo. As plantas com morte súbita foram diagnosticadas pelos sintomas visuais. As coletas tiveram inicio no dia 24 de junho de 2003 e terminaram dia 13 de dezembro do mesmo ano, e foram realizadas em intervalos regulares de 35 dias. Em cada coleta foram separadas as folhas, galhos, casca do tronco e raízes de cada planta para se determinar a concentração dos nutrientes, com o solo também foi determinado o teor nutricional do mesmo. Na variedade “Pêra Rio”, o comportamento dos nutrientes foram os seguintes: nas folhas as concentrações de fósforo, potássio, enxofre e boro diminuíram com o avanço da doença e a de zinco aumentou; nos galhos as concentrações de nitrogênio, fósforo, potássio diminuíram e as de cobre, ferro, manganês e zinco aumentaram; na casca do tronco o ferro e o manganês diminuíram e finalmente nas raízes as concentrações de nitrogênio, cálcio, enxofre, boro, ferro e zinco diminuíram. Na variedade “Natal”, o comportamento dos nutrientes foi um pouco diferente: nas folhas a concentração de potássio diminuiu com o avanço da doença; nos galhos as concentrações de nitrogênio, fósforo, potássio diminuíram e a de manganês aumentou; na casca do tronco o potássio e o boro diminuíram e o magnésio e manganês aumentaram e finalmente nas raízes as concentrações enxofre, boro e zinco diminuíram. Quanto ao solo, este não influenciou nas alterações nutricionais que ocorreram com as plantas, pois com a evolução da doença os teores permaneceram inalterados / The Brazilian culture of citrus is the greater of the world, it is one of the main cultures produced in Brazil, however it has been for 5 years suffering with the arrival of the sudden death in citrus, mainly in the south of the Triângulo Mineiro and north of São Paulo. With the objective to evaluate the nutritional condition of plants in levels of symptoms in the sudden death of citrus and making the accompaniment of the soil fertility soil in these areas with purpose of comparison of the efficiency nutrients absorption nutrients, two experiments in a commercial orchard situated in the city of Frutal - MG had been lead. Two varieties of citrus had been used, “Pêra Rio” and “Natal”, in the lemon tree “Cravo” both with 14 years. The experimental design was entirely randomized with four treatments (healthy plants and in three levels of sudden death) and four repetitions, in split plot in time. The plants with sudden death had been diagnosised by the visual symptoms. The assessments had begun in day 24 of June of 2003 and finished December 13 of this year, and had been carried through regular intervals of 35 days. In each assessments the leaves, twigs, rind of the trunk and roots had been separate to determine the nutrients concentration were determined the nutritional content of the soil either. In the variety “Pera Rio”, the behavior of the nutrients had been the following ones: in leaves the concentrations of phosphorus, potassium, sulphur and boron had diminished with the advance of the illness, and zinc was increased. In the twigs the concentrations of nitrogen, phosphorus, potassium had diminished and of copper, iron, manganese and zinc had increased. In the rind of the trunk the iron and the manganese had diminished and finally in the roots the concentrations of nitrogen, calcium, sulphur, boron, iron and zinc had diminished. In the variety “Natal”, the behavior of the nutrients was a little different of “Pêra Rio”: in leaves the potassium concentration diminished with the advance of the illness. In the twigs the concentrations of nitrogen, phosphorus, potassium had diminished and manganese was increased. In the rind of the trunk the potassium and the boron had diminished and the magnesium and manganese had increased and finally in the roots the concentrations sulphur, boron and zinc had diminished. The soil didn't influence in the nutritionals alterations that had occurred with the plants, with the evolution of the illness the content had remained unchanged

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