https://repositorio.ifgoiano.edu.br/handle/prefix/216 Sat, 14 Mar 2026 10:08:20 GMT 2026-03-14T10:08:20Z https://repositorio.ifgoiano.edu.br/handle/prefix/6145 Título: QUALIDADE DA PLANTABILIDADE DO MILHO DOCE EM FUNÇÃO DA VELOCIDADE DE SEMEADURA Autor(es): Rapaliao, Mariana Joao Pedro Primeiro Orientador: Machado, Tulio de Almeida Primeiro Membro da Banca: Morais, Emmerson Rodrigues de Segundo Membro da Banca: Costa, Fernando Rezende da Abstract: The sowing process, among the production stages, is considered the most important, requiring maximum efficiency. All stages that occurred during sowing were carried out by seeders; these machines are equipped with mechanisms that aim to deposit the seed in the soil and create a favorable environment for its germination. The main objective of this project was to evaluate the plantability quality of sweet corn as a function of different speeds under two seed metering discs. The study was conducted at IF Goiano –Morrinhos Campus located in the municipality of Morrinhos/GO. The design was a randomized block design in a split-plot arrangement. The crop planted was sweet corn. A John Deere 4x2 TDA tractor and a Netz mechanical seeder were used. The operating speeds used were: V1: 2.43; V2: 3.75; V3: 6.00 km h-1. The following variables were evaluated: average linear distance between seeds, quantity of seeds, and type of seed spacing. The results underwent analysis of variance using the F-test at a 5% probability level. The means were subjected to Tukey's test at a 5% probability level; mentioning that the increasing in the sowing speed affects the percentage of spacing. It´s also said that the lowest operating speed provides better seed distribution during sowing. Additionally mentioned, operating at a speed of 6.00 km h⁻¹ (1,67 m s-1), shows the least variability and points within the control limits. Keywords: metering disc, no-till system, types of sieves. Editor: Instituto Federal Goiano Tipo: Dissertação Fri, 05 Dec 2025 00:00:00 GMT https://repositorio.ifgoiano.edu.br/handle/prefix/6145 2025-12-05T00:00:00Z https://repositorio.ifgoiano.edu.br/handle/prefix/6089 Título: SISTEMA DE IRRIGAÇÃO INTELIGENTE BASEADO EM LÓGICA​ ​FUZZY INTEGRADO COM INTERNET DAS COISAS PARA A​ ​CULTURA DO TOMATE CEREJA​ Autor(es): Novak, Sergio Souza Primeiro Orientador: Bailão, Adriano Soares de Oliveira Primeiro Membro da Banca: Teixeira, Marconi Batista Segundo Membro da Banca: Ribeiro, Fabiana Girotto Terceiro Membro da Banca: Santos, Charles Barbosa Abstract: This work presents the development, implementation, and experimental validation of an Intelligent Irrigation System using Fuzzy Logic (SILF), integrated with the Internet of Things (IoT), designed to optimize water use in cherry tomato cultivation (Solanum lycopersicum var. cerasiforme). The proposed system addresses the limitations of traditional fixed-time irrigation methods, which often lead to under- or over-irrigation, nutrient leaching, and water waste. The SILF architecture consists of: (i) a sensor network based on the ESP32 microcontroller for monitoring soil moisture, air temperature, and air humidity; (ii) a Python/Flask backend server hosting the fuzzy inference module; and (iii) a web-based interface developed with Angular for remote monitoring and system configuration. The core of the system is a Mamdani-type fuzzy controller, whose membership functions and inference rules were defined based on consultations with a fruit-growing specialist and on the crop’s physiological literature. Every hour, the system processes real-time environmental data, applies 27 fuzzy rules, and—using the centroid defuzzification method—determines the optimal activation time of the hydraulic pump and solenoid valve, ranging from 0 to 60 minutes. Experimental validation was conducted in a protected environment using a randomized block design with a 5 × 3 factorial arrangement, comprising five substrate volumes (3, 6, 9, 12, and 15 L) and three irrigation methods: (i) traditional (30 continuous minutes once per day); (ii) fractionated (6 minutes every 2 hours, totaling 30 minutes per day); and (iii) intelligent irrigation using SILF. A total of 80 cherry tomato plants were evaluated, with drainage (excess water) as the primary response variable. Analysis of variance (ANOVA) revealed highly significant effects (p < 0.0001) of both irrigation method and substrate volume on drainage. The interaction between these factors was not significant (p = 0.3494), indicating the robustness of SILF under different cultivation conditions. Tukey’s multiple comparison test (α = 0.05) demonstrated that SILF resulted in a statistically significant reduction in average drainage compared to traditional fixed-time irrigation methods, while no significant difference was observed between the two fixed-time strategies. Regarding substrate volume, pots with 15 L exhibited significantly lower drainage compared to those with 3 L and 9 L. It is concluded that SILF is a viable and effective technological solution, capable of saving an average of 200 to 300 mL of water per plant per day, corresponding to a potential reduction of approximately 24 L per day for a bench containing 80 pots. The system combines low cost, scalability, remote control, and adaptive decision-making logic that mimics expert reasoning. This work validates the potential of integrating Fuzzy Logic and IoT technologies for precision agriculture, promoting a more sustainable use of water resources. Editor: Instituto Federal Goiano Tipo: Dissertação Fri, 28 Nov 2025 00:00:00 GMT https://repositorio.ifgoiano.edu.br/handle/prefix/6089 2025-11-28T00:00:00Z https://repositorio.ifgoiano.edu.br/handle/prefix/5998 Título: BIOINOCULAÇÃO COM Bacillus spp. E SEUS EFEITOS FISIOLÓGICOS NO DESEMPENHO DE PLÂNTULAS DE MILHO Autor(es): Silva, Ludimila Lopes da Primeiro Orientador: Sales, Juliana de Fátima Abstract: The growing demand for sustainable alternatives in agriculture has stimulated the use of plant growth-promoting microorganisms as a strategy to optimize the initial performance of crops. In this context, the objective was to evaluate the initial physiological effects of applying a commercial bioinoculant containing Bacillus spp. to maize seedlings (Zea mays L.) grown in sterile sand under controlled conditions. The experiment was conducted at concentrations of 0 (water); 50; 100; 150 and 200 µL and with four replicates. Morphological (emergence, root and shoot length and dry mass), physiological (chlorophyll a fluorescence and gas exchange), anatomical and histochemical variables were analyzed using PCA and Pearson correlation. The application of the 100 µL dose of the bioinoculant promoted a higher percentage of emergence, reaching 85%, an increase in the root system, biomass accumulation, and greater photochemical efficiency (Fv/Fm). Higher doses resulted in lower physiological performance and anatomical changes indicative of stress. Principal component analysis highlighted 100 µL as the dose with the strongest association between variables favorable to plant growth and development. Furthermore, a strong positive correlation was observed between photosynthetic yield and root growth. It is concluded that the 100 µL dose stood out as the most efficient, promoting a balance between root growth and photochemical efficiency. The proper application of bioinoculants represents a biotechnological approach capable of optimizing the initial establishment of corn, contributing to more efficient and sustainable production systems. Editor: Instituto Federal Goiano Tipo: Dissertação Fri, 31 Oct 2025 00:00:00 GMT https://repositorio.ifgoiano.edu.br/handle/prefix/5998 2025-10-31T00:00:00Z https://repositorio.ifgoiano.edu.br/handle/prefix/5972 Título: CARACTERIZAÇÃO CITOGENÉTICA E CRANIANA DOS ROEDORES SIGMODONTÍNEOS DO SUL DO GOIÁS, BRASIL CENTRAL Autor(es): Fontoura, Carolina Pereira Primeiro Orientador: Hannibal, Wellington Abstract: Brazil has one of the greatest biodiversities in the world, with 785 recorded mammalian species, approximately 43% of which are small non-volant mammals. Despite the high representativeness of this group, their diversity and distribution patterns in the Cerrado remain poorly understood. The identification of some taxa within the order Rodentia is challenging due to their high morphological similarity. In this context, the integrated analysis of cytogenetic and morphological data, including craniometric information, has proven to be an effective tool for accurate taxonomic identification. Scientific collections play a crucial role in assessing diversity and supporting mammalian taxonomic studies. The Mammal Collection of the State University of Goiás (CMUEG), located in southern Goiás, has been essential for advancing the knowledge of the region’s mammalian fauna. It is the only collection in the region registered with the Committee of Mastozoological Collections. This study provides a detailed evaluation of the small rodents housed in the CMUEG through karyotype descriptions and morphometric analyses, including measurements and assessments of external and craniodental morphology. The approach aims to improve the accuracy of sigmodontine rodent identifications. A total of 68 skulls and dentitions were analyzed, along with karyotypes from 27 specimens, belonging to the tribes Akodontini, Oryzomyini, Phyllotini, and Thomasomyini. Morphometric and qualitative differences were observed in morphologically similar species, such as Calomys expulsus and Calomys tener, as well as between Oligoryzomys mattogrossae and Oligoryzomys nigripes. Additionally, karyotypes of Necromys lasiurus, Hylaeamys megacephalus, Oecomys catherinae, Oecomys cleberi, Oligoryzomys mattogrossae, Calomys expulsus, and Rhipidomys macrurus were presented. The results reinforce the importance of scientific collections and integrative approaches for the accurate taxonomic identification of small mammals, contributing to the quality and integrity of biodiversity data in the region. Editor: Instituto Federal Goiano Tipo: Dissertação Mon, 30 Jun 2025 00:00:00 GMT https://repositorio.ifgoiano.edu.br/handle/prefix/5972 2025-06-30T00:00:00Z