RESUMOObjetivou-se com este experimento verificar a translocação de Mo aplicado em diferentes épocas do desenvolvimento da cultura da soja, pela determinação do teor em nódulos radiculares, folhas e grãos. O experimento consta de sete tratamentos instalados em blocos casualizados, e seis repetições. Os tratamentos foram constituídos pelas épocas de aplicação dos micronutrientes: 1) testemunha (sem aplicação); 2) Co e Mo via semente; 3) Co e Mo no estágio V 4 ; 4) Co e Mo no estágio V 6 ; 5) Co e Mo no estágio R 1 ; 6) Co e Mo no estágio R 3 ; e 7) Co e Mo via semente e no estágio R 3 . Nos tratamentos 2, 3, 4, 5 e 6, utilizaram-se as doses de 2,5 g ha -1 de Co e 80 g ha -1 de Mo, enquanto no tratamento 7forneceu 2,5 g ha -1 de Co e 20 g ha -1 de Mo nas sementes e no estádio R 3 foi feita uma aplicação de 400 g ha -1 de Mo. A partir da aplicação, foram coletadas 20 plantas por parcela durante 9 semanas consecutivas, enquanto nos tratamentos 5 e 6, as coletas foram feitas por 8 e 7 semanas consecutivas, respectivamente. Avaliou-se a translocação de Mo das folhas para os nódulos e grãos, o teor de nitrogênio foliar e nos grãos, teor de proteína e de Mo nos grãos e a produtividade da soja. Os resultados demonstraram que o Mo aplicado via foliar transloca para os nódulos e para os grãos na fase de granação; as aplicações de Mo via foliar ou nas sementes não influenciaram o rendimento da cultura, os teores de nitrogênio e de proteína nos grãos; e a aplicação de 400 g ha -1 de Mo no estágio R 3 aumentou os teores nos grãos. Termos para indexacão:Glycine max, micronutrientes, adubação molíbdica nas sementes e foliar. ABSTRACTThis study had the aim of evaluating the translocation of Mo applied at different times on the development of soybeans, determining their presence in soybean root nodules, leaves and grains. The assay was done in Fazenda Canadá, located in Uberlândia, MG. The experimental design was the one of randomized blocks with seven treatments and six repetitions. The treatments constituted of the following micronutrient application times: 1) control (without application); 2) Co and Mo via seed; 3) Co and Mo at the stage V4; 4) Co and Mo at the stage V6; 5) Co and Mo at the stage R1; 6) Co and Mo at the stage R3; and 7) Co and Mo at the via seed and stage R3. The doses 2.5 g ha -1 Co and 80 g ha -1 Mo were used in the treatments 2, 3, 4, 5 and 6, whereas for treatment 7, 2.5 g ha -1 Co and 20 g ha -1 Mo were used in the seeds, and at stage R3 400 g ha -1 Mo was applied. Twenty plants in each plot were collected weekly, for 9 weeks, except for treatments 5 and 6. Which were collected for 8 and 7 weeks, respectively. Molybdenum translocation from leaves to nodules and grains, and nitrogen in the leaves and grain, grain protein and molybdenum and culture yield were evaluated. The results had demonstrated that Mo applied on the leaves translocated to the nodules and grains in the filling phase; the applications of Mo on the leaves or on the seeds did not influence the yield of the culture, the protein and nitrogen...

This paper describes an experimental study on the effect of reducing time series collected from IoT electrical agro-sensors through approximation techniques, in time series classification tasks, for plant stress detection. From large sets of real data, stored in time series format, experiments were carried out to analyze: (i) performance of mathematical methods to reduce the dimensionality of time series - PAA, SAX and MCB; and (ii) Whether the application of these techniques influences the performance of time series classification models for plant stress detection, using machine learning algorithms KNN, SVM and ANN. Both in terms of data volume reduction and time series classification, the experiment showed significant improvements in terms of compression rate and accuracy, with the best result found in the use of PAA+SAX techniques for reduction and SVM for classification.