Showing papers by "Arci Dirceu Wastowski published in 2018"
TL;DR: Evaluating the effect of a foliar fungicide commonly used to control Asian soybean rust in the physiological and sanitary quality of soybean seeds indicated that four fungicides provide higher grain yield, increased seed weight, and germination percentages within commercial standards.
Abstract: The objective of this study was to evaluate the effect of a foliar fungicide commonly used to control Asian soybean rust (Phakopsora pachyrhizi) in the physiological and sanitary quality of soybean seeds. The experiment was carried out during the 2012/13 field season, with six treatments and four replications arranged in a randomized complete block design. The following treatments were evaluated: T1 (no fungicide application); one application at R1 stage; two applications at R1 and R3 stages; three applications at R1, R3, and R5 stages; four applications at R1, R3, R5, and R6 stages and five applications at R1, R3, R5, R6 and R7 stages. Seeds yield, seed weight, viability and vigor assessments were used to measure the impact of foliar fungicide applications on soybean yield and seed quality. The results indicated that four fungicide applications provide higher grain yield, increased seed weight, and germination percentages within commercial standards. In contrast, the number of fungicide applications did not correlate with the sanitary quality of the seeds.
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Journal Article•
TL;DR: Este resultado indica that durante o tempo of exposicao nao houve decomposicao dos constituintes da parede celular, somente dos extrativos presentes na madeira, diminuindo desta forma a quantidade of solubilizados.
Abstract: Os valores da solubilidade da madeira em hidroxido de sodio a 1% indicam a remocao de extrativos e carboidratos de baixa massa molecular, indicando o grau de deterioracao por organismos xilofagos ou degradacao por agentes fisicos. O presente trabalho objetivou avaliar a solubilidade em hidroxido de sodio da madeira de Acacia mearnsii De Wild. proveniente de diferentes areas de apodrecimento. Nos periodos de 0 e 12 meses foram retirados discos de aproximadamente 10 cm de espessura, pesados e posteriormente secos a ±105 °C. Estas amostras foram reduzidas a cavacos para posterior avaliacao utilizando a norma NBR7990. Os resultados mostraram uma reducao nos valores da solubilidade da madeira apos 12 meses de exposicao, sendo que o material proveniente do campo coberto por gramineas mostrou uma reducao ainda maior. Este resultado indica que durante o tempo de exposicao nao houve decomposicao dos constituintes da parede celular, somente dos extrativos presentes na madeira, diminuindo desta forma a quantidade de solubilizados.