ABSTRACT The seed deterioration process during storage is inevitable, but it can be slowed down using packaging that reduces the influence of the external environment on stored corn seeds. Therefore, this study aimed to evaluate the physiological quality of corn seeds stored in different packages and subjected to storage conditions in the central region of Brazil. Thirty-seven corn genotypes were analyzed in three storage environments: multiwall paper, 10 °C temperature, and 40% relative air humidity; multiwall paper under uncontrolled conditions; and hermetic packaging under uncontrolled conditions. The results of germination, water content, electrical conductivity, accelerated aging, soilless cold test, and field emergence test were used. Physiological quality assessments indicated that storage under conditions of 10 °C temperature and 40% relative air humidity is more efficient in preserving corn seeds' physiological quality than packaging in an uncontrolled environment.

ABSTRACT To enhance speed and agility in interpreting physiological quality tests of seeds, The use of algorithms has emerged. This study aimed to identify suitable machine learning models to assist in the precise management of seed lot quality. Soybean lots from two companies were assessed using the Supplied Test Set, Cross-Validation (with 8, 10, and 12 folds), and Percentage Split (with 66% and 70%) methods. Variables analyzed through Tetrazolium tests included vigor, viability, mechanical damage, moisture damage, bed bug damage, and water content. Method performance was determined by Kappa, Precision, and ROC Area metrics. Classification Via Regression and J48 algorithms were employed. The technique utilizing 66% of data for training achieved 93.55% accuracy, with Precision and ROC Area reaching 94.50% for the J48 algorithm. Applying the cross-validation method with 10 folds resulted in 90.22% of correctly classified instances, with a ROC Area outcome like the previous method. Tetrazolium Vigor was the primary attribute used. However, these results are specific to this study's database, and careful planning is necessary to select the most effective application methods.

ABSTRACT Analyzing the impact of harvest-time drying data is crucial for successful storage and maintaining regulatory seed quality. This study aimed to assess the performance of fixed and mobile dryers using machine learning techniques. Data were collected from convective dryers, including the total number of dryers used, drying time (in hours), moisture percentages at the product’s entrance and exit, and the humidity difference between them. The study employed the Filtered Clusterer model, which utilizes the Simple K-Means technique and the Resample filter to group data based on similarities. The findings indicated distinct differences between fixed and mobile drying systems, with well-defined variations within each system. The algorithm, combined with the applied filters, proved effective in unsupervised classification by identifying and reducing inter-cluster similarity within the fixed system, thereby creating distinct classes within the dataset. In conclusion, the algorithm successfully clustered the scattered dataset and accurately classified and minimized inter-cluster similarity within the fixed system. Conversely, the mobile system exhibited low drying efficiency.

RESUMO Analisar os efeitos de dados de secagem em época de safra é primordial para o sucesso do armazenamento, além de manter a qualidade fisiológica das sementes. O objetivo com este trabalho foi avaliar o desempenho de secagem em secadores fixo e móveis através de aprendizado de máquinas. Os dados foram coletados de secadores convectivos, com base em: i) total de secadores trabalhados; ii) tempo de duração de secagem (horas); iii) percentual de umidade na entrada e saída do produto (%); e iv) diferenças de umidade entres ambas (%). Foi utilizado o modelo Filtered Clusterer, baseado na técnica Simple K-Means e filtro Resample, para agrupar dados com base em suas similaridades. Os resultados apresentados demonstram que o sistema de secagem é distinto entre os equipamentos fixo e móvel, com diferenças bem definidas dentro dos sistemas de secagem estabelecidos. O algoritmo juntamente com os filtros demonstrou ser eficiente na classificação não supervisionada, identificando e minimizando similaridade inter-cluster do sistema fixo definindo em classes distintas dentro do conjunto de dados. Conclui-se, que o conjunto de dados dispersos são agrupados de modo que o algoritmo classifica e minimiza similaridade inter-cluster do sistema fixo com alta precisão. Por outro lado, o desempenho da secagem em sistema móvel apresentou baixa eficiência.