https://repositorio.ifgoiano.edu.br/handle/prefix/148 Thu, 25 Jun 2026 13:17:12 GMT 2026-06-25T13:17:12Z http://repositorio.ifgoiano.edu.br:80/retrieve/216/22.jpg https://repositorio.ifgoiano.edu.br/handle/prefix/148 https://repositorio.ifgoiano.edu.br/handle/prefix/6635 Título: VISÃO COMPUTACIONAL E INTELIGÊNCIA ARTIFICIAL PARA MEDIÇÃO DO MESOCARPO DE TOMATES Autor(es): Souza, João Carlos Soares Primeiro Orientador: Silva, Alexandre Carvalho Abstract: Advances in computer vision and artificial intelligence have driven innovation in agriculture, particularly in automated product inspection. In the context of Agro 4.0, standardized systems are crucial for optimizing processes and ensuring objective analyses compared to conventional methods. This study investigates the application of Computer Vision and Artificial Intelligence in measuring the mesocarp thickness of tomatoes (Solanum lycopersicum L.), an essential parameter for industrial and commercial standardization. To this end, a low-cost integrated hardware and software system was developed, based on digital image capture and processing. Statistical validation compared automated methods with physical reference measurements. The results demonstrated that the Artificial Intelligence (AI) model outperformed the conventional Computer Vision (CV) technique, achieving an accuracy of 90.76% (compared to 86.88% for CV) and a Mean Absolute Error (MAE) of 0.608 mm. The system achieved an optimized inference time of approximately 6 seconds per sample. It is concluded that the automation tool demonstrates technical feasibility and high reliability, offering promising prospects for realtime classification, selection of new varieties, and the improvement of phenotypic evaluation of fruits in vegetable farming and industry. Editor: Instituto Federal Goiano Tipo: Dissertação Wed, 01 Apr 2026 00:00:00 GMT https://repositorio.ifgoiano.edu.br/handle/prefix/6635 2026-04-01T00:00:00Z https://repositorio.ifgoiano.edu.br/handle/prefix/6612 Título: AJUSTE FITOTÉCNICO PARA TOMATE RASTEIRO DESTINADO AO CONSUMO 'IN NATURA' COM USO DE SOLUBILIZADOR DE FÓSFORO Autor(es): Caetano, Laryssa Marcia Primeiro Orientador: Pontes, Nadson de Carvalho Primeiro Membro da Banca: Fujinawa, Miriam Fumiko Segundo Membro da Banca: Nascimento, Abadia dos Reis Abstract: Tomato (Solanum lycopersicum L.) cultivation is one of the most important in the world due to its economic relevance. The search for sustainable management practices has become increasingly important in the face of environmental problems and high production costs. Furthermore, the labor lack in the field increases the demand for techniques that facilitate cultivation, reduce costs, and increase productivity. The objective of this study was to evaluate the effect of a biological product and the productive performance of determinate growth habit tomato hybrids for the fresh market. The work was carried out in two experimental areas in the municipality of Morrinhos. A phosphorus-solubilizing inoculant composed of the bacterium Bacillus velezensis UFV3918, associated with organomineral fertilizer, was used. Tomato plants were cultivated at densities of 10,000 plants ha-1 and 20,000 plants ha-1. The data were subjected to statistical analysis, with means compared using Fisher's exact test (LSD ≤ 0.05). Significant differences in productivity were observed in function of hybrids, planting densities, and biological product application. The results indicate that the use of bio-inputs, associated with the cultivation of specific hybrids in a ground-level system, have the potential to increase productivity and reduce costs, constituting a viable alternative for producers who supply the fresh market. Editor: Instituto Federal Goiano Tipo: Dissertação Mon, 09 Mar 2026 00:00:00 GMT https://repositorio.ifgoiano.edu.br/handle/prefix/6612 2026-03-09T00:00:00Z https://repositorio.ifgoiano.edu.br/handle/prefix/6605 Título: REVESTIMENTOS COMESTÍVEIS E REGULADOR VEGETAL NA CONSERVAÇÃO PÓS-COLHEITA DE TOMATE Autor(es): Sousa, Marcelo Jhonatan de Sousa e Primeiro Orientador: Megguer, Clarice Aparecida Primeiro Membro da Banca: Moreira, Marialva Alvarenga Segundo Membro da Banca: Correia, Teresa Drummond Abstract: Tomato is a crop that is widely cultivated and consumed worldwide, as fresh and in various processed products. However, it is highly perishable after harvest due to the fragility of its tissues and its intense metabolic activity. Therefore, the use of postharvest conservation technologies is essential to maintain fruit quality. Among these technologies, edible coatings based on cassava starch, plant growth regulators such as gibberellic acid (GA₃), and vegetable oils such as babassu oil have shown promising potential. The objective of this study was to evaluate the effect of these technologies on the postharvest conservation of tomato fruit. The experiment was carried out in a completely randomized design (CRD), in a 6 × 4 factorial scheme, with six treatments (T1 – Control; T2 – 100 mg L⁻¹ GA₃; T3 – 6% babassu oil; T4 – 3% cassava starch; T5 – 100 mg L⁻¹ GA₃ + 3% cassava starch; T6 – 6% babassu oil + 3% cassava starch) and four storage periods (0, 4, 8 and 12 days), with three replications and two fruits per plot. Total soluble solids (TSS), titratable acidity (TA), weight loss, color, firmness and pH were evaluated. Data were subjected to analysis of variance and means were compared using Tukey’s test at the 5% probability level. The treatment with 3% cassava starch and 100 mg L⁻¹ gibberellic acid was the most effective method for postharvest conservation of tomatoes, promoting greater firmness retention, maintenance of titratable acidity, lower pH increase and delayed color change. Editor: Instituto Federal Goiano Tipo: Dissertação Wed, 01 Apr 2026 00:00:00 GMT https://repositorio.ifgoiano.edu.br/handle/prefix/6605 2026-04-01T00:00:00Z https://repositorio.ifgoiano.edu.br/handle/prefix/6091 Título: RESPOSTAS FISIOLÓGICAS E PRODUTIVIDADE DE MORANGUEIRO CULTIVADO COM BIOESTIMULANTES EM CONDIÇÕES DE DÉFICIT HÍDRICO Autor(es): Oliveira, Ana Paula André de Primeiro Orientador: Silva, Cícero Jose da Abstract: This paper aimed to evaluate the effect of the bioestimulants PROGEN Detox and FERTILEADER Fix NG on the development of strawberry plants under water deficit conditions. The experiment took place in a greenhouse, employing a randomized block design within a split-plot arrangement, comprising three replicates and six plants per subplot, totaling 180 plants. The plot treatments consisted of two biostimulants (PROGEN Detox Br and Fertileader Fix NG), and the subplots received five foliar application doses of 0.0, 0.1, 0.2, 0.3, and 0.4 L ha⁻¹. The transplanted seedlings of the Camarosa cultivar were obtained from a certified nursery and grown in 14.5 L pots, filled up to 5 cm below the rim with fertilized and amended soil according to the plants’ requirements. Irrigation was carried out daily with three pulses per day, maintaining soil moisture close to field capacity. At 40 and 55 days after transplanting, the strawberry plants were subjected to water stress, reducing soil moisture to 50% below the optimal level during the flowering and fruiting stages. The evaluated variables were (a) chlorophyll fluorescence; (b) water use efficiency; (c) photosynthetic and transpiration rates; (d) stomatal conductance; (e) internal and external CO₂ concentrations; (f) electron transport; (g) chlorophyll A and B; (h) floral abortion; and (i) total yield. Physiological and postharvest evaluations were carried out in the morning, from 8 a.m to 11 a.m. Harvesting began at 120 days after transplanting. The following variables were analyzed: (a) fruit diameter and length; (b) soluble solids; (c) pulp pH; and (d) fruit color. Data were subjected to analysis of variance at a 5% significance level. In general, the biostimulants promoted positive physiological responses, such as increased fruit brightness, higher photosynthetic rates, and enhanced external carbon assimilation, especially under water stress conditions. However, they did not significantly influence yield or postharvest quality. The 0.2 L ha⁻¹ dose stood out as the most effective for enhancing the photosynthetic rate during flowering, indicating that biostimulants are a promising technology, although further studies under commercial production conditions are still required. Editor: Instituto Federal Goiano Tipo: Dissertação Wed, 19 Nov 2025 00:00:00 GMT https://repositorio.ifgoiano.edu.br/handle/prefix/6091 2025-11-19T00:00:00Z