DSpace Coleção: Artigo em periódico indexado (CPAMN)

Particle-Size-Sieved fractions of Caesalpinia pulcherrima seed flour: physicochemical, nutritional, and functional properties.

2026-01-01T00:00:00Z

Título: Particle-Size-Sieved fractions of Caesalpinia pulcherrima seed flour: physicochemical, nutritional, and functional properties. Autoria: SOUSA, P. B. de; ALVES FILHO, E. G.; SILVA, L. M. A.; ROCHA, N. G. da; CHAVES, C. de C.; FREITAS, A. K. N.; SOUSA, H. R. de; FRANCO, L. J. D.; ZAMBELLI, R. A. Conteúdo: Flamboyant-mirim seed flour (FSF) emerges as a promising natural ingredient obtained from grains rich in proteins, carbohydrates, minerals, and bioactive compounds. This study aimed to characterize FSF and evaluate the effect of particle size on its chemical, physicochemical, technological, mineral, and functional properties. The seeds were milled using a knife grinder, and the flour fractions were separated through sieves of 0.710, 0.500, 0.355, and 0.250 mm. Analyses included proximate composition, technological, and functional parameters, and 1H NMR spectroscopy was performed only for the selected 0.250 mm fraction (chosen due to its superior proximate composition) to assess solvent-dependent compositional variability.

Adubação nitrogenada em pastagens de Megathyrsus maximus cv. BRS Tamani nos cerrados de Roraima.

2026-01-01T00:00:00Z

Título: Adubação nitrogenada em pastagens de Megathyrsus maximus cv. BRS Tamani nos cerrados de Roraima. Autoria: COSTA, N. de L.; JANK, L.; BENDAHAN, A. B.; MAGALHAES, J. A.; RODRIGUES, B. H. N.; SANTOS, F. J. de S. Conteúdo: O efeito da adubação nitrogenada (0, 50, 100 e 150 kg de N ha-1) sobre a produtividade de forragem e características morfogênicas e estruturais de pastagens de Megathyrsus maximus cv. BRS Tamani foi avaliado em condições naturais de campo nos cerrados de Roraima. A adubação nitrogenada afetou positiva e quadraticamente (P<0,05) a disponibilidade de matéria seca verde (MSV), densidade populacional de perfilhos (DPP), número de folhas perfilho-1 (NFP), tamanho médio de folhas (TMF), índice de área foliar (IAF) e taxas de aparecimento (TAlF) e expansão foliar (TExF).

Parameterization of the APSIM model in a tropical environment under intercropping and rainfed conditions.

2026-01-01T00:00:00Z

Título: Parameterization of the APSIM model in a tropical environment under intercropping and rainfed conditions. Autoria: OLIVEIRA, J. R. de; ANDRADE JUNIOR, A. S. de; SOUZA, H. A. de; BASTOS, E. A.; BOSI, C.; PEZZOPANE, J. R. M.; BEZERRA, R. L. S.; SANTOS, L. R. C. dos Conteúdo: Mechanistic models, such as the Agricultural Production Systems Simulator (APSIM), are used to predict the growth of pasture species and grain crops in monoculture and intercropping systems. The objective of this study was to evaluate the performance of the APSIM model in simulating the growth and productivity of maize and Marandu palisadegrass in monoculture and intercropping systems in eastern Maranhão, Brazil. Data on biomass partitioning, climate, and soil properties were collected. Model calibration involved parameterizing the light extinction coefficient and radiation use efficiency, as well as adjustments to the phenological and structural parameters of maize.

Water deficit limits growth and yield of cowpea cultivars O déficit hídrico limita o crescimento e o rendimento de cultivares de feijão-caupi.

2026-01-01T00:00:00Z

Título: Water deficit limits growth and yield of cowpea cultivars O déficit hídrico limita o crescimento e o rendimento de cultivares de feijão-caupi. Autoria: SANTOS, T. O. da S.; ANDRADE JUNIOR, A. S. de; BASTOS, E. A.; SOUZA, H. A. de; SOUSA, R. S. de; PEREIRA, L. da S.; CARDOSO, M. J. Conteúdo: Irrigation management is essential for applying the required amount of water to crops. This study evaluated the growth and yield of cowpea cultivars as a function of water regime. The experiment was conducted in Teresina, Piauí State, Brazil, from July to September 2022. The experimental design comprised a randomized block in a split-plot scheme with four replicates. The treatments comprised five water regimes (133.80, 191.70, 249.00, 303.00, and 357.00 mm per cycle) and two cowpea cultivars (BRS Inhuma and BRS Olho Negro).