TCC Horticultura
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Item Avaliação de cultivares de alface sob cultivo orgânico em Maragogi/AL(INSTITUTO FEDERAL DE ALAGOAS - Ifal, 2026-05-19) Santos, Maria Nadege da Silva; Alves, Jailson do Carmo; https://orcid.org/0000-0003-0607-3385; http://lattes.cnpq.br/1302855913477324; Pôrto, Mônica Lima Alves; http://lattes.cnpq.br/5222956631716535; Souza, Ênio Gomes Flôr; http://lattes.cnpq.br/9225008513028085Lettuce is one of the most produced and marketed vegetables in Brazil. The success of organic lettuce cultivation requires adequate planning, and the choice of cultivars adapted to this management system across different regions and cropping seasons is a fundamental aspect. Thus, selecting cultivars with good agronomic performance and adaptation to this production system has been a major demand from lettuce growers. However, studies on the adaptability and productive performance of lettuce cultivars in organic production systems are scarce for the North Coast region of Alagoas State, Brazil. The objective of this study was to evaluate the productive performance of lettuce cultivars under organic cultivation in Maragogi, Alagoas State, Brazil. The study consisted of evaluating 10 lettuce cultivars (three loose-leaf lettuce type – Elba, Itapuã Super and Moana; three butterhead lettuce type – Babá de Verão, Fortaleza and Litorânea; two crisphead lettuce type – Delícia and Grandes Lagos; and two oakleaf lettuce type – Rubi and Brava) under organic cultivation in the Maragogi/AL. The experimental design adopted was randomized complete blocks with four replications. The experiment was conducted at the Ifal campus Maragogi from June to August 2023, on a Neossolo Quartzarênico (Quartzipsamment Entisol), sandy texture. The lettuce cultivars were grown in 1.44 m² experimental plots (1.2 m x 1.2 m) at a spacing of 0.3 m x 0.3 m. Fertilization was based on soil chemical analysis and crop recommendations, using alternative fertilizers (well-rotted cattle manure, magnesium thermophosphate and wood ash). Cultural practices included soil mulching, weekly manual weeding, micro-sprinkler irrigation and weekly spraying with biofertilizer. No pest or disease incidences were observed during the experiment. Harvesting was performed when the plants were fully developed with commercial characteristics. The following characteristics were evaluated: stem diameter, stem length, plant height, number of leaves, total production and marketable production. Data were subjected to analysis of variance, and treatment means were grouped using the Scott-Knott test (p<0.05). Significant differences (p<0.01) were observed among the lettuce cultivars for all evaluated characteristics. The crisphead cultivars (Delícia and Grandes Lagos) showed the best growth and productive performance. The cultivars Elba (loose-leaf type), Fortaleza and Babá de Verão (butterhead type) also demonstrated good adaptation and productive performance, representing viable options for organic lettuce growers in the region.Item Potencial antifúngico de extratos vegetais no controle in vitro de Lasiodiplodia spp.(INSTITUTO FEDERAL DE ALAGOAS - Ifal, 2026-02-04) Silva, José Fabio da; Barbosa, Tiago Jorge de Araújo; http://lattes.cnpq.br/4598181798521668; Carnaúba, Juliana Paiva; https://orcid.org/0000-0001-7246-8639; http://lattes.cnpq.br/9758718992783544; Santos, Maria Fabíola Moraes da Assumpção; http://lattes.cnpq.br/7941533987806732This study aimed to evaluate the effect of plant extracts from four medicinal species boldo-falso (Plectranthus barbatus), falsa-mirra (Tetradenia riparia), melão-de-são-caetano (Momordica charantia), and mastruz (Dysphania ambrosioides) on the in vitro mycelial growth of the phytopathogenic fungi Lasiodiplodia theobromae, L. pseudotheobromae, and L. brasiliensis. The experiments were conducted at the Plant Health Laboratory of the Federal Institute of Alagoas - Maragogi Campus, using fungal isolates obtained from comercial coconut plantations in the state of Alagoas, exhibiting symptoms of leaf blight. The extracts were prepared from leaves of adult plants of the medicinal species, which, after collection, were dried, macerated, subjected to alcoholic extraction, then filtered, and the ethanol evaporated in a water bath. The extracts produced were diluted to concentrations of 5, 10, and 15%, added to PDA medium in Petri dishes (10x90 mm), where the fungi were inoculated. Mycelial growth was measured daily using calipers until one of the treatments reached the edge of the plates. The experimental design adopted was completely randomized, conducting three distinct experiments, each targeting a different fungus. The data were subjected to analysis of variance, and the means were compared using Tukey's test (P<0.05) with the aid of the SISVAR software. The plant extracts of boldo-falso, falsa-mirra, melão-de-são-caetano, and mastruz have an antifungal effect on the in vitro mycelial growth of the fungi L. theobromae, L. pseudotheobromae and L. brasiliensis. At concentrations of 10% or higher, the four plant extracts promoted the complete inhibition of mycelial growth of the three Lasiodiplodia spp. species, regardless of the evaluation period, suggesting the presence of bioactive compounds with fungistatic and fungicidal action.Item Avaliação de cultivares de gladíolo em dois ambientes de cultivo no município de Maragogi/AL(Instituto Federal de Educação Ciência e Tecnologia de Alagoas, 2026-02-06) Pimentel, Erick Bruno Lima; Pôrto, Mônica Lima Alves; http://lattes.cnpq.br/5222956631716535; Barreto, Lais Leite; https://orcid.org/0000-0001-6987-4329; http://lattes.cnpq.br/2212021003413281; Alves, Jailson do Carmo; https://orcid.org/0000-0003-0607-3385; http://lattes.cnpq.br/1302855913477324The production of cut flowers is a significant source of income generation in Brazil. Gladiolus is a cut flower with great productive potential in various regions of the country; however, few studies have focused on this crop under the environmental conditions of Northeast Brazil. The objective of this study was to evaluate the productive performance of gladiolus cultivars in two cultivation environments in the municipality of Maragogi/AL. The experimental design adopted was randomized blocks with four replications. The treatments were arranged in a 2 x 5 factorial scheme, with the first factor representing the cultivation environments (open field and protected environment (50% shade cloth)) and the second factor consisting of the gladiolus cultivars (White Prosperity, Purple Flora, Traderhorn, Rosa Supreme, and Peter Pears). The experiment was conducted in an area of the IFAL Maragogi campus, in a Quartzarenic Neosol. The experimental plots consisted of 5.0 m² (1.0 m x 5.0 m) beds, which were divided into five 1.0 m² (1.0 m x 1.0 m) experimental plots, where corms were cultivated at a spacing of 0.5 m x 0.2 m, in a conventional production system, during the period from May to July 2025. Harvesting was carried out when the cultivars presented commercial characteristics (phenological stage R2), and the following variables were evaluated: cultivation cycle (CC), total stem length (CTH), ear length (CE), ear diameter (DE), and number of flowers per ear (NFE). The results obtained were subjected to analysis of variance and Scott-Knott test (p<0.05). The results showed a significant interaction effect between the cultivation environment x cultivar factors only for ear diameter (DE). The crop cycle (CC) and total stem length (CTH) showed significant differences only for the isolated factor of cultivars, while the other characteristics (ear length (CE) and number of flowers per ear (NFE)) showed significant differences as a function of the isolated factors of cultivars and growing environments. In general, open field cultivation provided better results for the production of flower stems of the different gladiolus cultivars. Most of the gladiolus cultivars evaluated met the quality criteria established by Veiling Holambra, falling into the standard commercial class 75, highlighting the potential of gladiolus cultivation under the edaphoclimatic conditions of the North Coast of Alagoas.Item Produção e uso de bioestimulante líquido do resíduo da graviola no desempenho da alface em Maragogi - Alagoas(Instituto Federal de Educação Ciência e Tecnologia de Alagoas, 2026-01-14) Dantas, Adrielly Cabral; Cavalcante, Marcelo; https://orcid.org/0000-0002-0722-0618; http://lattes.cnpq.br/0221717690546039; Brito, Klebson Santos; http://lattes.cnpq.br/4650092086179357; Silva, José Luís Tavares da; http://lattes.cnpq.br/0331067035015390Fruit pulp processing industries generate a significant volume of organic solid waste annually, which is mostly disposed of in landfills, causing environmental impacts. Composting is the main alternative being adopted for disposal, generating leachate, a liquid with a chemical composition that can favor the development of agricultural species, therefore having potential use in agriculture, with economic, social and environmental impacts. Therefore, this research aimed to determine the chemical composition and concentration of leachate (liquid biofertilizer), from soursop processing waste, that promotes the productive and physiological performance of lettuce cv. Veneranda. The experiment was set up in a randomized block design, with five treatments (0% - control, 10, 20, 30 and 40% biofertilizer diluted in water) and four blocks. The chemical composition of the slurry indicated high values for macro (N, P, K, Ca, Mg) and micronutrients (Mn, Cu, Fe, Zn), total organic matter (44,154 mg/L), total organic carbon (4,191.7 mg/L), and humic (10.77 mg/L) and fulvic (1,054.4 mg/L) acids. The application promoted a linear effect (p < 0.05) on plant height, number of leaves, leaf area, total chlorophyll, and shoot mass. A quadratic effect was observed for the index of ‘chlorophyll a’ (Xmax. = 15.58%; Ŷmax. = 22.31), ‘chlorophyll b’ (Xmax. = 25.10%; Ŷmax. = 5.66), shoot dry mass (Xmax. = 24.98%; Ŷmax. = 5.77g/plant) and root dry mass (Xmax. = 22.67%; Ŷmax. = 0.80g/plant), indicating that 22% of slurry has plant growth-promoting properties. The chemical composition of the slurry obtained from the composting process of soursop residue and sawdust presents high concentrations of macro and micronutrients, organic matter, organic carbon, and humic substances, exerting a positive influence on the biometric and physiological components of lettuce. Therefore, it can be used as a liquid biofertilizer, representing a sustainable and economically viable alternative for both organic and family farming.