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Incorporation of retorted oil shale in Brazilian agricultural soil: An assessment of impacts after successive applications. Repositório Alice
MARTINAZZO, R.; SILVEIRA, C. A. P.; BAMBERG, A. L.; STUMPF, L.; STOCKER, C. M.; MONTEIRO, A. B.; PEREIRA, I dos S.; RIBEIRO, P. L.; GIACOMINI, S. J..
Brazilian soils have unequivocal role on global food security. Production in these lands is subjected to multiple and successive inputs with variable composition, and the introduction of new products must be carefully validated to ensure environmental safety. The pyrobituminous oil shale from Irati geological formation is the most important Brazilian oil shale reserve, and its pyrolysis process yields a solid by-product known as retorted oil shale. Among alternative retorted oil shale reuses we hypothesize that it is safe and can either be used as raw material for agricultural inputs production or disposed in the soil without causing degradation. The aim of this work was to evaluate the soil contamination propensity after six cumulative applications of...
Tipo: Artigo de periódico Palavras-chave: Segurança ambiental; Xisto; Solo; Contaminação.
Ano: 2020 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1127471
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Innovative substrates for sugarcane seedling production: Sewage sludges and rice husk ash in a waste-to-product strategy. Repositório Alice
SILVA, M. T. da; MARTINAZZO, R.; SILVA, S. D. dos A. e; BAMBERG, A. L.; STUMPF, L.; FERMINO, M. H.; KOHLER, T. W.; MATOSO, E. S.; VALGAS, R. A..
Recent advances in the sucroenergy production chain include a new way of planting sugarcane based on a method of seedling propagation which requires a significant amount of substrate. Since the sucroenergy sector has been noted as having cleaner energy production, it is imperative that sustainable substrates suitable for the production of sugarcane seedlings be developed. Therefore, the main objective of this study was to develop innovative substrates with solar-dried sewage sludges and rice husk ash to compose substrates for sugarcane seedling production. Batches of sewage sludges were collected in open drying beds from three different municipal wastewater treatment plants from the Rio Grande do Sul State, Brazil: from Passo Fundo city (treated by...
Tipo: Artigo de periódico Palavras-chave: Desempenho agronômico; Substrato; Cana de Açúcar; Lodo Residual; Bioenergia; Casca de Arroz.
Ano: 2020 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1127467
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Spatial variability of soil physical attributes in sugarcane using different row spacings. Repositório Alice
PANZIERA, W.; LIMA, C. L. R. de; MOURA-BUENO, J. M.; PAULETTO, E. A.; SILVA, S. D. dos A. e; TIMM, L. C.; STUMPF, L..
The aim of this study was to determine the impact of harvesting traffic by evaluating the spatial variability of soil physical attributes on a clayey Oxisol under sugarcane cultivation using different row spacing. Two areas of sugarcane production (RB855156 genotype) were planted in autumn 2013, both using conventional planting systems. Treatments were either sugarcane cultivated using: (i) single-row spacing (SR) of 1.50 m; or (ii) double-row spacing (DR) of 0.40 × 1.50 m. Areas using SR spacing occupied a total of 6 ha areas using DR spacing occupied a total of 2 ha. Assessments of soil physical attributes were performed during the summer of 2016 after the second harvest. Soil measurements in each area were done at 100 points using a grid design with...
Tipo: Artigo de periódico Palavras-chave: Cana de Açúcar.
Ano: 2020 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1128497
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Sprinkler irrigation in lowland rice: Crop yield and its components as afunction of water availability in different phenological phases. Repositório Alice
PINTO, M. A. B.; PARFITT, J. M. B.; TIMM, L. C.; FARIA, L. C.; CONCENÇO, G.; STUMPF, L.; NÖRENBERG, B. G..
Efficient water use in agriculture is a global demand, and in this context, the implementation of a sprinkler irrigated rice system has become a reality. Besides saving water, proper management of a sprinkler irrigated system can maintain high levels of productivity. This study aimed to determine the effect of soil water tension on rice crop production, in both vegetative and reproductive stages, as well as to evaluate the effect of soil water availability and physicochemical attributes on biometric and reproductive characteristics associated to rice grain yield under sprinkler irrigation. The experiment was carried out at the Lowland Experimental Station, Embrapa Clima Temperado, Capão do Leão ? Rio Grande do Sul, Brazil, during two growing seasons, in an...
Tipo: Artigo de periódico Palavras-chave: Oryza Sativa; Água; Irrigação.
Ano: 2020 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1127410
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