Mestrado em Agricultura Tropical
URI Permanente para esta coleção
Nível: Mestrado Acadêmico
Ano de início: 2010
Conceito atual na CAPES: 4
Ato normativo: Homologado pelo CNE (Portaria MEC nº 656 de 22/05/2017) Publicação DOU em 27/07/2017, Seç. 1; Pag. 36. Parecer 288/2015
Periodicidade de seleção: Semestral
Área(s) de concentração: Agricultura Tropical
Url do curso: https://agriculturatropical.ufes.br/pt-br/pos-graduacao/PPGAT/detalhes-do-curso?id=1079
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Submissões Recentes
- ItemDiagnóstico molecular de PYMoV (Piper yellow mottle virus) em viveiro comercial de pimenta-do-reino(Universidade Federal do Espírito Santo, 2021-10-18) Lima, Douglas Vicente do Carmo; 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/The black pepper (Piper nigrum) has significant economic value, being widely used in the food industry and in health because of its biochemical particularities. The infection caused by PYMoV (Piper yellow mottle virus) in crops and the aggressiveness of the symptoms have a direct influence on the losses that are potentiated when seedlings are affected. Although viruses can be asymptomatic, they can be identified mainly by the symptoms of mosaic, whitening of the veins, and fruit reduction. Methods that help in early and reliable detection can have direct benefits to growers. The objective of this work was to evaluate the occurrence of PYMoV in commercial black pepper nursery plants using the PCR technique. Plant tissues from 77 plants (symptomatic and asymptomatic) were collected from a nursery in the region of Jaguaré-ES. After extraction of total DNA, the samples were submitted to PCR reaction with specific primers to detect part of the viral genome. Only 5 plants (6.5%) tested positive for the presence of the virus, indicating a low incidence of the virus in the evaluated nursery. Among the plants analyzed there were cases in which visual symptomatology was confirmed by PCR, cases in which the negative PCR indicated that the plant was not contaminated or that the symptom observed would be indicative, for example, of a possible nutritional deficiency. We conclude that the PCR technique was efficient for the molecular identification of PYMoV in the samples evaluated. Work of this nature can bring direct benefits to producers, contributing to minimize years and losses to nurserymen and black pepper producers
- ItemFertilizante de liberação controlada associado a inoculante no desenvolvimento de mudas de Coffea Canephora(Universidade Federal do Espírito Santo, 2024-03-22) Nascimento, Thais Santana do; Gontijo, Ivoney; https://orcid.org/0000-0002-4251-4689 ; http://lattes.cnpq.br/8496861046570150 ; https://orcid.org/0009-0004-0081-1951 ; http://lattes.cnpq.br/0160662864316379 ; Falqueto, Antelmo Ralph ; https://orcid.org/0000-0003-3146-1873 ; http://lattes.cnpq.br/2005727951505420 ; Souza, Joabe Martins de; https://orcid.org/0000-0003-0920-6446 ; http://lattes.cnpq.br/0533921032348775 ; Schmildt, Edilson Romais ; https://orcid.org/0000-0002-3457-7997 ; http://lattes.cnpq.br/0648502408490406
- ItemUso do solo na Bacia Hidrográfica do Rio São Mateus empregando ferramentas de Geotecnologia(Universidade Federal do Espírito Santo, 2024-03-27) Nardotto Júnior, André Orlandi; Pires, Fábio Ribeiro; https://orcid.org/0000-0001-6534-3475; http://lattes.cnpq.br/5930035056050041; https://orcid.org/0009-0000-7196-9036; http://lattes.cnpq.br/3118742685923814; Santos, Alexandre Rosa dos; https://orcid.org/0000000326179451; http://lattes.cnpq.br/7125826645310758; Gontijo, Ivoney; https://orcid.org/0000-0002-4251-4689; http://lattes.cnpq.br/8496861046570150abstract
- ItemLithothamnion sp. Como Bioestimulante De Plantas(Universidade Federal do Espírito Santo, 2024-02-28) Ramos, Elmo Pereira; Schmildt, Edilson Romais ; https://orcid.org/0000-0002-3457-7997; http://lattes.cnpq.br/0648502408490406; Arantes, Sara Dousseau ; https://orcid.org/0000-0001-6202-4153; http://lattes.cnpq.br/6966978781439168; https://orcid.org/0009-0007-1753-9570; http://lattes.cnpq.br/0515127303694525; Lara, Túlio Silva; https://orcid.org/0000-0003-4669-3319; http://lattes.cnpq.br/4770463407331465; Falqueto, Antelmo Ralph ; https://orcid.org/0000-0003-3146-1873; http://lattes.cnpq.br/2005727951505420Lithothamnion sp. is a calcareous algae used in agriculture as a mineral fertilizer. However, studies indicate biostimulant effects in several agricultural crops, but progress is still needed in identifying the mechanisms. The present study consists of four chapters that address the biostimulant effects of the alga Lithothamnion sp. in plants. In the first chapter, the main applications of Lithothamnion sp. in agricultural crops were described in the form of a bibliographical review. In the second and third chapters, different sources of Lithothamnion sp. were evaluated. to identify the dose that results in better quality of seedlings and greater accumulation of nutrients for papaya ‘Aliança’ (Carica papaya L.). In the fourth chapter, the biostimulant effect of Lithothamnion sp. was evaluated. in interaction with indolebutyric acid (IBA) in the development of the root system, vegetative growth, gas exchange and seedling quality of two black pepper cultivars (Piper nigrum L.) ‘Bragantina’ and ‘Kottanadan Broto Branco’. Through the biobliographic review, it was possible to highlight the positive effects of Lithothamnion sp. in stimulating plant growth, fruit quality, productivity and gas exchange, highlighting the auxinic action and the induction of resistance to biotic and abiotic stress. The incorporation of Lithothamnion sp. in the substrate (Chapter 2) and foliar application via drenching (Chapter 3) promoted changes in the quality of seedlings and nutritional content in the “Aliança” papaya tree, mainly calcium, potassium, manganese and zinc. In general, it was noted that Lithothamnion sp. extracted from deposits in Espírito Santo have a greater biostimulant effect on papaya seedlings, compared to those extracted in the states of Maranhão and Bahia. The ideal dose varied between 5 and 6 g L-1 when applied foliarly and 4 Kg m-3 when incorporated into the substrate. In black pepper seedlings, it was noted that the effect of Lithothamnion sp. was independent of indolebutyric acid and cultivars. Lithothamnion sp. promoted shoot growth and root length, with a better response at a dose of 1,80 kg m-3 . However, increasing concentration inhibited adventitious rhizogenesis. The presence of IBA resulted in greater accumulation of biomass, root volume, shoot growth and water use efficiency, providing greater values in the development of seedlings. In the presence of IBA, higher values in seedling development were observed for the cultivar ‘Kottanadan Broto Branco’. In conclusion, it was evident (1) the biostimulating effect of Lithothamnion sp. in the seminal seedlings of the “Aliança” papaya tree and (2) the effectiveness of lower doses of the biostimulant for the clonal seedlings of the black pepper cv. ‘Bragantina’ and ‘Kottanadan Broto Branco’.
- ItemFaixa de Deposição de Gotas na Pulverização com Aeronave Remotamente Pilotada(Universidade Federal do Espírito Santo, 2024-02-28) Ribeiro, Maria Eduarda Audizio; Vitória, Edney Leandro da; https://orcid.org/0000000222686037; http://lattes.cnpq.br/5385859254036142; https://orcid.org/0000-0002-9003-0793; http://lattes.cnpq.br/2175151990611466; Fernandes, Adriano Alves; https://orcid.org/0000-0002-5016-0745; http://lattes.cnpq.br/4927918119791381; Furtado Júnior, Marconi Ribeiro; https://orcid.org/0000-0002-1491-3981; http://lattes.cnpq.br/3689897239952789The introduction of new technologies in agriculture, such as Remotely Piloted Aircraft, has enabled enhanced precision in spraying, resulting in reduced use of chemicals and, consequently, minimizing environmental contamination and risks to human health. With the aim of exploring the application of RPAs, this work was divided into two stages, each resulting in a dissertation chapter. The first stage involved investigating the state of the art through bibliometric analysis. In the second stage, the performance of a spraying RPA was studied by analyzing the droplet spectrum and deposition pattern as a function of operational parameters, aiming to identify greater droplet uniformity and, consequently, increased efficiency in application. In the first chapter, the Scopus platform was used to conduct a quantitative survey of all scientific literature produced on the subject. The analysis of these data was conducted using VOSviewer software. In the second chapter, the application efficiency was assessed through the distribution of droplets and droplet spectrum, using a remotely piloted aircraft. Water-sensitive paper labels and artificial targets were employed to evaluate process efficiency. Additionally, a study of the deposition pattern was conducted, employing bright blue food dye and adjuvant in the spray solution. The effective spray pattern was determined by collecting the sprayed solution on passive collectors (8,0 x 16,0 cm), positioned perpendicular to the spray line, distributed along a line of approximately 18,0 m in length. The passive collectors were collected, taken to the laboratory, and the volume was determined by spectrophotometry. The experiment was conducted using a randomized complete block design (DBC), in a split-split plot scheme with three factors: application heights (2,0, 3,0, and 4,0 m), operational flight speeds (4,0, 5,0, and 6,0 m s -1 ), and two spray nozzles (XR110015 and MGA60015). Treatments were replicated four times, using an application rate of 12 L ha-1 . Experimental data were analyzed using the coefficient of variation and subsequently subjected to analysis of variance and mean test in SISVAR. The results of the bibliometric analysis revealed leadership in the academic field by China and the USA in academic scientific publications, highlighting the growth in article and research production by Brazil in recent years. As for the experimental results, a lower coefficient of variation, 20,62%, was observed with a flight speed of 5,0 m s -1 and a height of 4,0 m, using the hollow cone nozzle. On the other hand, a height of 2,0 m and a flight speed of 6,0 m s -1 , using the XR110015 nozzle, resulted in higher values of droplet density, coverage, and deposition, while the MGA60015 nozzle showed a greater drift potential.