Mestrado em Agricultura Tropical

URI Permanente para esta coleção

http://repositorio.ufes.br/handle/10/17347

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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Agora exibindo 1 - 5 de 157

Produção do cafeeiro conilon empregando déficit e alternância na irrigação por gotejamento
(Universidade Federal do Espírito Santo, 2026-01-20) Lopes, Vanessa Chaves; Bonomo, Robson; https://orcid.org/0000-0002-4022-8216; https://lattes.cnpq.br/7564190687163814; https://orcid.org/0009-0006-5616-9499; https://lattes.cnpq.br/5842361106464695; Oliosi, Gleison; https://orcid.org/0000-0001-8911-4976; https://lattes.cnpq.br/6488125967999191; Quartezani, Waylson Zancanella; https://orcid.org/0000-0002-2700-332X; https://lattes.cnpq.br/5049820995551608
Brazil is the world's largest coffee producer, and coffee farming in the country has expanded into areas with significant climatic variability, which is exacerbated by current changes in temperature and rainfall patterns, presenting significant water supply problems for coffee plants. Among the techniques used for water conservation, drip irrigation with Controlled Alternating Partial Irrigation of the Root Zone (APRI) and Irrigation Deficit (DI) stand out. The experiment was implemented in the field in July 2019 and evaluated until July 2024, using genotypes 143. Two drip irrigation tubes were installed per row of plants, one on each side of the root system. The amount of water applied to the treatments was calculated from the crop evapotranspiration for localized irrigation (ETcloc). The experimental design adopted was randomized blocks, with nine treatments and four replications. The treatments included replacing 50% of the crop evapotranspiration for localized irrigation (ETcloc) at intervals of 3, 7, and 14 days, and 100% of ETc at the same intervals. It also included a treatment with controlled deficit irrigation, applying 50% of ETc, in addition to fixed irrigation with 100% of ETc applied by two drip lines and fixed irrigation with 100% of ETc applied by one drip line on only one side of the root system, representing the standard irrigation management in the region. Productivity, yield, coffee bean classification by sieve, and water use efficiency (WUE) were evaluated. Average productivity, yield, and sieve classification did not show differences according to Tukey's test. Therefore, in general, the treatments that received 50% of the replacement blade obtained the highest EUA values.
Avaliação de cultivares de maracujazeiro no Norte do Espírito Santo
(Universidade Federal do Espírito Santo, 2024-02-29) Rodrigues, Johnny da Silva; Schmildt, Edilson Romais ; https://orcid.org/0000-0002-3457-7997; http://lattes.cnpq.br/; Arantes, Sara Dousseau ; https://orcid.org/0000-0001-6202-4153; http://lattes.cnpq.br/; https://orcid.org/0000-0002-3364-1336; http://lattes.cnpq.br/; Falqueto, Antelmo Ralph ; https://orcid.org/0000-0003-3146-1873; http://lattes.cnpq.br/; Souza, Thiago Corrêa de ; https://orcid.org/0000-0002-4991-7704; http://lattes.cnpq.br/
Brazil is the largest producer of passion fruit, but little is known about the adaptability of recently released cultivars in different producing regions. This study aims to evaluate the vegetative and reproductive development of sour and sweet passion fruit cultivars in the northern coast of Espírito Santo. Five sour passion fruit cultivars (Passiflora edulis Sims f. flavicarpa, cv. ‘BRS Gigante Amarelo’, “BRS Rubi do Cerrado’, ‘BRS Sol do Cerrado', “FB-200 Yellow Master' and ‘FB-300 Araguari') and three sweet passion fruit cultivars [P. setacea DC. cv. (BRS Pérola do Cerrado'), P. cincinnata Mast. (BRS Sertão Forte’) and P. alata Curtis (BRS Mel do Cerrado’)] were evaluated. The experiment was conducted from August 2021 to July 2023 in the municipality of Sooretama/ES, using a randomized block design with 8 treatments, 9 replicates, and 5 plants per plot. Vegetative development was assessed 50 and 90 days after transplanting. Productivity and physicochemical fruit quality were evaluated during two productive cycles. Data were subjected to analysis of variance and means were grouped using the Scott Knott test (p<0.05). Vegetative development was superior in ‘BRS Sertão Forte' and inferior in ‘BRS Mel do Cerrado' and “BRS Pérola do Cerrado’. Higher productivity was obtained in sour passion fruits compared to sweet ones. However, the harvest was staggered throughout the year. Production was superior in “FB-300 Araguari' and ‘BRS Rubi do Cerrado', while fruit quality was similar among the sour cultivars. “BRS Pérola do Cerrado' had a higher number of fruits and vitamin C content, while ‘BRS Mel do Cerrado' had higher soluble solids content and ratio. Staggered harvesting can be an alternative for income distribution for farmers, while the distinct quality among cultivars allows for targeting different markets
Tecnologia de aplicação com aeronave não tripulada no manejo da sigatoka na cultura da banana
(Universidade Federal do Espírito Santo, 2025-09-02) Schaeffer, Maickel Lucas; Vitória, Edney Leandro da; https://orcid.org/0000-0002-2268-6037; http://lattes.cnpq.br/5385859254036142; https://orcid.org/0000-0001-9976-2379; http://lattes.cnpq.br/3112391509157438; Fernandes, Adriano Alves; https://orcid.org/0000-0002-5016-0745; http://lattes.cnpq.br/4927918119791381; Oliveira, Ednaldo Miranda de; https://orcid.org/0000-0002-1182-7623; http://lattes.cnpq.br/5438678030553977; Araújo, Rychardson Rocha de; https://orcid.org/0000-0003-2500-0923; http://lattes.cnpq.br/8834429015420309
Banana farming is strategically important for Brazilian agribusiness, with Espírito Santo standing out as a key production hub. However, fungal leaf diseases such as Sigatoka spp. severely compromise productivity, requiring efficient chemical control. Remotely Piloted Aircraft (RPA) emerge as a promising alternative to traditional application methods, offering greater precision and lower environmental impact. This study aimed to define the optimal flight configurations (application rate and droplet size) for aerial spraying via RPA in 'Prata' banana plants, seeking to optimize droplet deposition and Sigatoka control. The experiment was conducted in Linhares, ES, using a randomized block design with five replications in a 4×3 factorial arrangement: four application rates (8, 10, 12, and 14 L ha⁻¹) and three droplet sizes (180, 240, and 300 μm), employing a DJI Agras T40 RPA at 4.5 m height and 20 km h⁻¹. Deposition was assessed using water-sensitive papers and PVC tags, while disease control was evaluated using systemic fungicides (groups C2 and G1), applied monthly for three months, with weekly post-application monitoring following Stover’s methodology. Results showed that the 14 L ha⁻¹ rate provided 120% greater coverage than 8 L ha⁻¹, while 240 μm and 300 μm droplets performed similarly, surpassing 180 μm droplets by 45%. The 8 L ha⁻¹ rate resulted in 46.06% lower droplet density than 14 L ha⁻¹, with 180 μm and 240 μm droplets producing 21.73 droplets cm⁻² (55.7% higher than 300 μm). Regarding drift potential, the combination of 12 L ha⁻¹ with 300 μm droplets showed the lowest Drift Risk Potential (DRP) and higher Dv0.1, indicating fewer ultra-fine droplets. The Volumetric Median Diameter (VMD) was directly influenced by nominal droplet size, with 12 L ha⁻¹ + 300 μm showing less than 14% variation, indicating greater stability and lower drift risk. The most efficient deposition was achieved with 10 L ha⁻¹ + 240 μm. For Sigatoka control, the treatments 14 L ha⁻¹ + 300 μm (77.2% relative efficacy), 8 L ha⁻¹ + 300 μm (74.6%), and 8 L ha⁻¹ + 240 μm (68.9%) stood out, maintaining consistent performance over time and ranking among the top five in integrated temporal efficacy. In conclusion, the interaction between operational parameters significantly influences application quality and disease control, with specific combinations optimizing coverage, deposition, and drift reduction.
Precisão experimental com mudas de eucalipto de acordo com o tamanho ótimo de parcela
(Universidade Federal do Espírito Santo, 2025-07-31) Tognere, Jasmyn; Arantes, Sara Dousseau; https://orcid.org/0000-0001-6202-4153; http://lattes.cnpq.br/6966978781439168; Schmildt, Edilson Romais; https://orcid.org/0000-0002-3457-7997; http://lattes.cnpq.br/0648502408490406; https://orcid.org/0000-0003-3599-4431; http://lattes.cnpq.br/1217527327115286; Vitória, Edney Leandro da; https://orcid.org/0000-0002-2268-6037; http://lattes.cnpq.br/5385859254036142; Santana, Enilton Nascimento de; https://orcid.org/0000-0002-8828-0515; http://lattes.cnpq.br/2422824511849628
The coefficient of variation is a widely used statistical measure to express experimental precision in agricultural and forestry studies, as it allows for the comparison of relative variability among different traits. However, the traditional classification of the coefficient of variation, proposed by Pimentel-Gomes, presents significant limitations, particularly due to its generalist nature and its failure to consider fundamental aspects such as the type of variable evaluated and the size of the experimental plot. This fixed approach may lead to misinterpretations regarding the quality of experiments, especially when applied to different crops or specific experimental conditions. In light of these limitations, a new classification of the coefficient of variation is proposed, which is better adapted to the context of experiments involving eucalyptus seedlings at the dispatch stage. Eight morphological traits were evaluated in seedlings of six eucalyptus clones (144, 224, BA7346, CO1407, TP361, and GG100), totaling eight thousand and two hundred units. The estimation of the optimal plot size was conducted using the modified maximum curvature method with bootstrap simulation, a method widely recognized for its capacity to identify the point at which the addition of experimental units ceases to provide significant gains in precision. The values of the coefficient of variation obtained were subsequently analyzed according to the data distribution. For variables that presented a normal distribution, a classification based on means and standard deviations was used; for variables with a non-normal distribution, a methodology based on the median and pseudo-sigma was adopted. The results showed that the behavior of the coefficient of variation as a function of the number of plants per plot is non-linear. As the number of plants increases, the required values of the coefficient of variation to classify the data within ranges of low variability become more stringent, correctly reflecting the reduction in experimental error. This variation in behavior was also influenced by the nature of the morphological trait evaluated, which reinforces the inadequacy of fixed and generalist classifications. The new proposal presented classification ranges with well-defined transitions between classes and greater adherence to the variability observed in real data. Moreover, the proposed methods proved to be more effective than the traditional model by considering the data distribution, thus providing greater sensitivity in the evaluation of experimental precision. Therefore, the proposed approach constitutes a more appropriate statistical tool for the reality of forest nurseries, contributing to increased reliability of experiments and to improved criteria for the evaluation of eucalyptus seedlings at the dispatch stage
Fitorremediação de solos contaminados com zinco por plantas ornamentais Zinnia elegans Jacq. e Brassica oleracea L. var. acephala DC.
(Universidade Federal do Espírito Santo, 2025-04-22) Piassi, Juliana Zambom; Pires, Fábio Ribeiro; https://orcid.org/0000-0001-6534-3475; http://lattes.cnpq.br/5930035056050041; https://orcid.org/0009-0002-5596-6374; http://lattes.cnpq.br/3129164238730704; Gontijo, Ivoney; https://orcid.org/0000-0002-4251-4689; http://lattes.cnpq.br/8496861046570150; Viana, Douglas Gomes ; https://orcid.org/0000-0001-6257-0461; http://lattes.cnpq.br/1062203728832824
Phytoremediation is a sustainable and low-cost technology for the decontamination of areas polluted with heavy metals, such as zinc (Zn). Although the use of ornamental plants in phytoremediation is promising, it is still poorly reported. Therefore, aiming to explore the use of ornamental plants in the phytoremediation of Zn, this work was structured in two stages, each composing a chapter of the dissertation. In the first stage, a bibliometric analysis was conducted to investigate the state of the art in phytoremediation of soils contaminated with heavy metals using ornamental plants. A quantitative survey on the topic (2004-2024) was performed using the Scopus database, and the software SigmaPlot and VOSviewer were employed to create graphs and connection maps. The results revealed an increase in research on this subject, with 100 documents published, highlighting scientific contributions from China, India, and Pakistan. Environmental Science and Pollution Research stood out as the most influential journal, and the Chinese Academy of Sciences emerged as the leading research institution. In the second stage, the performance of Zinnia elegans Jacq. (zinnia) and Brassica oleracea L. var. acephala DC. (ornamental kale) was evaluated in sandy and clay soils contaminated with Zn. Two greenhouse experiments were conducted, one for each soil type, using a randomized block design in a 5x2 factorial scheme. Treatments consisted of four Zn doses plus a control (0, 50, 100, 300 e 450 mg dm-3), applied as ZnSO4·7H2O, and two plant species, with four replications. Morphological attributes, phytotoxicity, pigments, and Zn in the soil and plants were evaluated. The increase in Zn doses negatively affected the production of shoot and root biomass in the plants. Both species were not efficient in extracting Zn from the soils. Ornamental kale showed greater tolerance to Zn stress

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