Doutorado em Agronomia
URI Permanente para esta coleção
Nível: Doutorado Acadêmico
Ano de início: 2010
Conceito atual na CAPES: 4
Ato normativo: Doutorado - Reconhecido Port. MEC 609, de 14/03/2019, DOU 18/03/2019, parecer 487/2018).
Periodicidade de seleção: Semestral
Área(s) de concentração: Produção Vegetal
Url do curso: https://producaovegetal.ufes.br/pt-br/pos-graduacao/PPGA/detalhes-do-curso?id=1440
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- ItemEstratégias de aplicação de glifosato em espécies de Coffea : efeitos na expressão gênica e na composição química dos grãos(Universidade Federal do Espírito Santo, 2024-03-04) Oliveira, Conceição de Maria Batista de; Osório, Vanessa Moreira ; https://orcid.org/; http://lattes.cnpq.br/; Verdin Filho, Abraão Carlos ; https://orcid.org/; http://lattes.cnpq.br/; Co-orientador3; https://orcid.org/; http://lattes.cnpq.br/; Soares, Taís Cristina Bastos ; https://orcid.org/; http://lattes.cnpq.br/; Orientador2; https://orcid.org/; http://lattes.cnpq.br/; https://orcid.org/; http://lattes.cnpq.br/; Tomaz, Marcelo Antônio ; https://orcid.org/; http://lattes.cnpq.br/; Cavatte, Paulo Cezar ; https://orcid.org/; http://lattes.cnpq.br/; Souza, Lucimara Cruz de ; https://orcid.org/; http://lattes.cnpq.br/; Santiliano, Fabiano Costa ; https://orcid.org/; http://lattes.cnpq.br/; 5º membro da banca; https://orcid.org/; http://lattes.cnpq.br/; 6º membro da banca; https://orcid.org/; http://lattes.cnpq.br/; 7º membro da banca; https://orcid.org/; http://lattes.cnpq.br/abstract
- ItemCancro dos ramos do cafeeiro (CRC) : variabilidade de genótipos resistentes e eficácia de fungicidas(Universidade Federal do Espírito Santo, 2024-04-26) Rocha, Matheus Ricardo da; Xavier, André da Silva ; https://orcid.org/0000-0002-9251-0301; http://lattes.cnpq.br/; Alves, Fábio Ramos ; https://orcid.org/0000-0001-5192-4199; http://lattes.cnpq.br/; Partelli, Fábio Luiz ; https://orcid.org/0000-0002-8830-0846; http://lattes.cnpq.br/; Moraes, Willian Bucker ; https://orcid.org/0000-0001-7478-7772; http://lattes.cnpq.br/; https://orcid.org/0000-0003-3230-9101 ; http://lattes.cnpq.br/; Araujo, Leonardo ; https://orcid.org/0000-0003-3470-9299; http://lattes.cnpq.br/; Gramacho, Karina Peres ; https://orcid.org/0000-0003-4037-1554; http://lattes.cnpq.br/; Jesus Júnior, Waldir Cintra de ; https://orcid.org/0000-0001-5711-0268; http://lattes.cnpq.br/; Cavatte, Paulo Cezar ; https://orcid.org/0000-0003-2963-7673; http://lattes.cnpq.br/; Tomaz, Marcelo Antônio ; https://orcid.org/0000-0002-9228-7541; http://lattes.cnpq.br/Brazil is the world's largest producer and exporter of coffee (Coffea spp.) and the second largest exporter of conilon coffee. However, fungal diseases such as stem canker of coffee trees (SCC), caused by Fusarium spp., have the potential for damage up to 100% in susceptible C. canephora genotypes. The disease is currently being managed without specific control methods, such as resistant genotypes and fungicides. In this sense, the objective was to characterize the resistance of clones and the effectiveness of fungicides for the control of SCC, caused by F. solani. For the resistance experiments, seedlings of 36 C. canephora clones, 20 from the robusta varietal group and 16 from the conilon varietal group, were inoculated with F. solani using the Mycelial Inoculation in Wounded Stems (IMC) method, transferring discs of mycelium and spores of the pathogen, grown on potato-dextrose-agar (PDA) for 10 days, for longitudinal sections in the stem of each sampling unit. The quantified disease data over time were subjected to analysis of variance, Scott-Knott mean tests and bootstrapping with the aid of R software, grouping clones according to resistance. For the variable internal lesion length (cm) and according to the Scott Knott tests, the clones Imbigudinho, Bamburral, Bicudo, P2, AD1, A1, AP and Peneirão were grouped among the most resistant of the conilon varietal group, while G20, L33, VR4, R22, R40 and 7 were the most resistant clones of the robusta varietal group. For F. solani mycelial growth inhibition and chemical control experiments, ten fungicides (Met+Flu, Dif+Pid, Cyc, Tia, Tia+Flu+Met, TioMet+Flu, Pid, TioMet, Pro+Nap and Flu) were tested in preventing mycelial growth F. solani in increasing doses between 0.0001-10000 µg.mL-1 in PDA culture medium. The EC50, effective concentration to inhibit 50% of the pathogen, estimated according to the log-logistic model LL2.3 in the R software, was between 0.06-5.77 µg.mL-1 in our results, and only the fungicide Flu was considered inefficient, with EC50 greater than 50 µg.mL-1 . At greenhouse, four doses of nine fungicides were sprayed preventively before inoculation, inoculated with F. solani by the IMC method on C. canephora seedlings with three pairs of leaves (clone LB1). Based on Kaplan-Meier curves estimates in the R software and log-rank tests, fungicide application tested for reducing symptoms and dry branches. The fungicides Pro+Nap, TioMet, Dif+Pid, TioMet+Flu, and Cyc were the most efficient, with no plant drought occurring at the highest doses under study, with a probability of plant survival of up to 100% throughout the entire experiment. The results obtained in this study will be essential to establish more efficient integrated management of SCC, an important disease expanding in C. canephora producing regions in Brazil
- ItemNovas tecnologias em fertilizantes nitrogenados : volatilização de amônia e produtividade do cafeeiro conilon(Universidade Federal do Espírito Santo, 2018-04-03) Machado, Ramires Ventura; Co-orientador1; https://orcid.org/; http://lattes.cnpq.br/; Co-orientador2; https://orcid.org/; http://lattes.cnpq.br/; Co-orientador3; https://orcid.org/; http://lattes.cnpq.br/; Orientador1; https://orcid.org/; http://lattes.cnpq.br/; Orientador2; https://orcid.org/; http://lattes.cnpq.br/; https://orcid.org/; http://lattes.cnpq.br/; 1º membro da banca; https://orcid.org/; http://lattes.cnpq.br/; 2º membro da banca; https://orcid.org/; http://lattes.cnpq.br/; 3º membro da banca; https://orcid.org/; http://lattes.cnpq.br/; 4º membro da banca; https://orcid.org/; http://lattes.cnpq.br/; 5º membro da banca; https://orcid.org/; http://lattes.cnpq.br/; 6º membro da banca; https://orcid.org/; http://lattes.cnpq.br/; 7º membro da banca; https://orcid.org/; http://lattes.cnpq.br/Urea is the most used nitrogen fertilizer in Brazil and in the world, but its superficial application may result in losses due to volatilization of ammonia, due to the action of urease. The growing demand for food associated with the concern of society with the environment has encouraged the search for new technologies to reduce the losses associated with the application of fertilizers, especially nitrogenous ones. The aim of this study was to evaluate the dynamics of nitrogen, from the application of new technologies associated with nitrogen fertilizers. For this the present thesis is structured in 4 chapters. Chapter 1 relates to a laboratory experiment in a 5 x 2 x 2 factorial scheme, with 5 nitrogen fertilizers (conventional urea (UA), urea + boron and copper (UBC), urea + urease inhibitor - NBPT (UNBPT) , and 2 fertilizers with sulfur-polymer coated urea (UPS1 and UPS2), 2 matric potentials (-30 kPa and -75 kPa) and 2 forms of application: Form 1 (100% of the dose applied uniquely at the beginning of the experiment) and Form 2 (50% at the beginning of the experiment and 50% at 7 days), aiming to quantify losses by volatilization of NH3 from the application of fertilizers with associated technology submitted to different matric potentials and application forms. Chapter 2, also performed in the laboratory, besides quantifying NH3 volatilization, also determined the urease activity and soil CO2 flux using 4 nitrogen fertilizers (conventional urea (UC), urea + boron and copper (UBC), urea + urease inhibitor - NBPT (UNBPT) and urea coated with sulfur and polymer (UPS) and the same application forms used in chapter 1. Chapter 3 refers to a greenhouse experiment to evaluate the initial growth of conilon coffee as a function of the application of new technologies in nitrogen fertilizers submitted to different matric potentials. The same fertilizers used in chapter 2 and two different matric potentials were used -75 kPa and -150 kPa. Chapter 4 was carried out from an experiment in the field to evaluate the nutrition and production of conilon coffee from the application of technologies in nitrogen fertilizers submitted to different forms of application. The fertilizers used were the same as in Chapter 3 and the application forms were 100% of the nitrogen fertilization in single application; 50% of the nitrogen fertilization applied in the flowering and 50% in the grains formation; and 65% of nitrogen fertilization applied in flowering and 35% in grains 10 formation. Chapter 1 demonstrated that new technologies in nitrogen fertilizers reduced the volatilization of N-NH3, where the polymer and sulfur coated fertilizers presented lower losses due to volatilization of N-NH3. The treatments with higher matric potential (-30 kPa) reduced the volatilization of N-NH3 by 16.3% and the single fertilization (100%) presented on average losses by volatilization of N-NH3 23.5% lower. In Chapter 2 it was observed that technologies applied to nitrogen fertilizers (UBC, UNBPT and UPS) reduced losses by volatilization by 40% and soil urease activity by 22% when compared to UC, with UPS being the fertilizer received the best evaluation. The split reduced N-NH3 volatilization losses by 36.1 and 65.2% for UNBPT and UPS fertilizers respectively, and the CO2 flux did not change as a function of the treatments. Chapter 3 concluded that nitrogen fertilizer technologies influenced the initial growth and nutrition of the conilon coffee tree, increasing leaf area (8.8%), leaf dry matter (9.7%) and stem (11.8%), and N content in the dry matter in the leaf (12.9%). The UC, UBC and UNBPT were influenced by a higher matric potential (-75 kPa). The UPS was not influenced by the soil matric potential. Chapter 4 demonstrated that nitrogen fertilizer technologies applied to conilon coffee produced 17 bags per hectare more than conventional urea. There was no difference between N fertilizer technologies when evaluating the productivity and concentration of total N and P in the leaves of conilon coffee, and that the application of each nitrogen fertilizer did not influence the productivity and nutrition of conilon coffee
- ItemFotossíntese e produção da batata yacon cultivada em ambiente protegido sob diferentes disponibilidades hídricas(Universidade Federal do Espírito Santo, 2023-03-17) Mendes, Tiago Pacheco; Oliveira, Fabio Luiz de; https://orcid.org/0000000217116988; http://lattes.cnpq.br/8904451083627425; https://orcid.org/0000000339475858; http://lattes.cnpq.br/1944644761580856; Carvalho, Daniel Fonseca de; https://orcid.org/0000-0001-7629-9465; http://lattes.cnpq.br/4871187664578422; Garcia, Giovanni de Oliveira; https://orcid.org/0000000313269909; http://lattes.cnpq.br/6763740612916491; Cavatte, Paulo Cezar; https://orcid.org/0000-0003-2963-7673; http://lattes.cnpq.br/8029279967950425; Reis, Edvaldo Fialho dos; https://orcid.org/0000000338231472; http://lattes.cnpq.br/2317496014692033; Carvalho, Arnaldo Henrique de OliveiraYacon (Smallanthus sonchifolius) has been undergoing a process of appreciation by the consumer market, as it is considered a functional food, due to its high nutritional value and, mainly, its contents of fructooligosaccharides (FOS), compounds that offer benefits to the human health. However, the success of the agricultural cultivation of an innovative species will depend on the generation of information that will support the planning of techniques for its management, among them the knowledge of the water needs of the species. In this sense, the objective of this study was to know the growth, development and production of yacon, from different levels of water availability in the soil. For this, a study was carried out consisting of two experiments in two crop cycles, in which the first experiment worked with a greater range of water availability in the soil, seeking to understand the effects of the most significant changes in water availability on development from yacon. In the second experiment, we worked with a smaller range of water availability in the soil, seeking a more refined understanding of the effects of water availability on the crop. Both experiments were carried out in 25-liter pots filled with soil material collected at a depth of 0.0 to 30.0 cm and placed in a greenhouse with an “umbrella” effect. Assessments of gas exchange were performed to estimate the photosynthetic variables, the Dualex indices of chlorophyll, nitrogen balance, anthocyanin and flavonoids were also measured. Plant height, number of leaves, leaf area, dry mass of leaves, stems, rhizophores, roots and tuberous roots, total commercial root production and by classes, water consumption and water use efficiency were also evaluated. Yacon produced 16.05% less for every 10 kPa increase in soil water tension. The maximum photosynthetic rate (29.276 µmol CO2 m-2 s -1 ) was observed in the highest tested water availability (20 kPa). The highest water demand presented was at the chronological age of 160 days after planting, regardless of water availability. The highest efficiency in water use was observed with the tension level of 30 kPa, with an estimated consumption of 841.4 mm of water during the cycle.
- ItemAvaliação do uso da água residuária da suinocultura na cultura de Saccharum officinarum(Universidade Federal do Espírito Santo, 2023-08-03) Binoti, Dione Henrique Breda; Garcia, Giovanni de Oliveira; https://orcid.org/0000000313269909; http://lattes.cnpq.br/6763740612916491; https://orcid.org/0000000212471948; http://lattes.cnpq.br/5097410836044801; Cecilio, Roberto Avelino; https://orcid.org/0000000328942481; http://lattes.cnpq.br/5497084995510727; Freitas, Wallisson da Silva; http://lattes.cnpq.br/4413056983902488; Silva, Samuel de Assis; https://orcid.org/0000000207187328; http://lattes.cnpq.br/5587612692274561; Gardiman Junior, Benvindo SirtoliA utilização planejada de efluentes orgânicos em cultivos agrícolas possibilita a reutilização da água e promove a incorporação de nutrientes no sistema solo-planta. Objetivou-se, com o desenvolvimento do presente trabalho, avaliar a viabilidade do uso de diferentes taxas anuais da água residuária da suinocultura, em duas safras de cana-de-açúcar (cultivar RB86-7515). O estudo foi desenvolvido durante as safras agrícolas de 2020/2021 e 2021/2022. Os tratamentos constituíram na aplicação de seis doses de água residuária da suinocultura fornecendo 40, 80, 120, 160, 200 e 240 kg ha-1ano-1 de potássio. Foram avaliados os atributos químicos do solo (pH, potássio, fósforo, cálcio, magnésio, capacidade de troca de cátions efetiva e potencial, saturação de bases e acidez potencial) os componentes de crescimento e produção da cultura (produtividade, número de colmos, comprimento, porcentagem de caldo e grau brix) e os riscos de contaminação difusa, pela análise (nitrogênio, sódio, potássio e fósforo) da água proveniente do escoamento superficial armazenada em coletores de plástico instalados em cada parcela experimental após as principais chuvas. No decorrer de dois anos de cultivo, o pH e a saturação por bases do solo reduziram, enquanto os teores de potássio, fósforo, capacidade de troca de cátions efetiva e potencial, cálcio, magnésio, e acidez potencial apresentaram aumento dos valores. Em função da dose de água residuária de suinocultura aplicada o pH, o fósforo, o potássio, o cálcio, o magnésio, a saturação de bases e a capacidade de troca de cátions potencial apresentaram aumento enquanto a capacidade de troca de cátions efetiva e a acidez potencial apresentaram redução. A utilização de maiores taxas de água residuária de suinocultura promoveu aumento da produtividade e redução do número de colmos e comprimento, a porcentagem de caldo diminuiu da primeira para segunda safra e grau brix aumentou. No estudo referente ao risco de contaminação difusa, os teores de nitrogênio, sódio, potássio e fósforo da água de escoamento superficial aumentaram com o incremento da dose de água residuária de suinocultura aplicada.