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Schwerz T.,Instituto Federal Goiano Campus Urutai | Jakelaitis A.,Instituto Federal Goiano Campus Rio Verde | Teixeira M.B.,Instituto Federal Goiano Campus Rio Verde | Soares F.A.L.,Instituto Federal Goiano Campus Rio Verde | Tavares C.J.,Instituto Federal Goiano Campus Posse
Revista Brasileira de Engenharia Agricola e Ambiental | Year: 2015

The objective of this research was to evaluate the production of sunflower in the off-season, supplemented or not with irrigation and cultivated after the crops of soybeans, corn or palisade grass. The treatments were allocated in a randomized blocks design in split plot (2×3), the supplemental irrigation by center pivot and without irrigation in the plots, and in the subplots the crops predecessors: soybeans, corn and palisade grass, with four replications. The height, stem diameter, shoot dry weight, number of leaves per plant and leaf area were evaluated at 15, 30, 45, 60, 75 and 90 days after emergence of sunflower plants. Sunflower plants were tall under all cultivation conditions, without variability in the evolution of stem diameter and of number of leaves. Leaf area was less in sunflower plants grown under corn straw and palisade grass under non-irrigated conditions. No significant effects on yield components - mass of thousand seeds, head diameter and oil and grain yield were observed. After cultivation of soybean, sunflower plants produced greater dry mass of shoots and higher oil content in the seed compared to plants established under corn stalk. © 2015, Departamento de Engenharia Agricola - UFCG/Cnpq. All rights reserved. Source

Costa J.V.,Instituto Federal Goiano Campus Urutai | Garbi Novaes M.R.C.,University of Brasilia | Asquieri E.R.,Federal University of Goais
Journal of Bioanalysis and Biomedicine | Year: 2011

The chemical characterization of Agaricus sylvaticus (A. sylvaticus) cultivated in Brazil is necessary to determine nutritional and pharmacological substances in order to guarantee its safe use as food or herbal medicine. The objective of this study was to determine the chemical composition and assess the antioxidant potential of A. sylvaticus fungi grown in Brazil. Through this study it was able to observe the rich chemical composition of A. sylvaticus, highlighting the variety and amount of minerals as well as the high protein content of this fungus. It was also observed the great antioxidant potential of the aqueous, alcoholic and ethereal A. sylvaticus mushroom extracts, emphasizing the alcoholic extract, which testifies the extraordinary benefits of this fungus in diet, since antioxidants prevent premature aging and various types of cancer as well. The composition of A. sylvaticus mushroom displayed differences when compared to the chemical composition of the same fungus in other studies and with other Agaricales fungi. © 2011 Costa JV, et al. Source

Orsine J.V.C.,Instituto Federal Goiano Campus Urutai | Brito L.M.,Estudante do Curso de Medicina | Silva R.C.,University of Brasilia | Almeida M.F.M.S.,University of Brasilia | Novaes M.R.C.G.,University of Brasilia
Nutricion Hospitalaria | Year: 2013

The purpose of this study was to assess the cytotoxic effect of the non-fractionated aqueous extract of A. sylvaticus mushroom in cultures of non-tumor cells (NIH3T3) and tumor cells (OSCC-3). The cells were maintained in DMEN cell culture medium added of 10% of fetal bovine serum and 1% antibiotic. For the cytotoxicity test we prepared the aqueous mushroom extract at concentrations of 0.01 mg.ml-1, 0.02 mg.ml-1, 0.04 mg.ml-1, 0.08 mg.ml-1, 0.16 mg.ml-1, and 0.32 mg.ml-1. For the culture, 2 x 105 cells/ml was deposited in 96-well microplates during 24 hour incubation with subsequent exchange of medium by another containing the mushroom concentrations. After 24 hour incubation the medium was discarded and 100 ml of tetrazolium blue (MTT) was added at a concentration of 5 mg.ml-1. The microplates were incubated for 2 h at 37° C. Spectrophotometric analysis was performed using 570 nm wavelength. From the values of the optical densities we determined the drug concentration capable of reducing cell viability by 50%. Therefore, the mushroom A. sylvaticus, at all concentrations tested, did not show cytotoxic effects, once the inhibitory concentration (IC50) obtained for tumor cells OSCC-3 was 0.06194 mg.ml-1, and the IC50 checked for non-tumor cells NIH3T3 was 0,06468 mg.ml-1. This test made it possible to determine that A. sylvaticus mushroom has no cytotoxic effects, suggesting its use safe for human consumption. Source

Nascente A.S.,Embrapa Arroz e Feijao | Da Silveira P.M.,Embrapa Arroz e Feijao | Santos G.G.,Federal University of Goais | Da Cunha P.C.R.,Instituto Federal Goiano Campus Urutai
Revista Caatinga | Year: 2014

The aim of this study was to determine the effects of soil management systems in no-tillage system (NTS) and crop rotations and on soil chemical properties. The experiment was conducted for six con-secutive years, during which were made 12 crops (summer and winter). The experimental design was com-pletely randomized in a split plot scheme. Treatments included four soil management (plots): P1 = NTS fol-lowed annually for a plowing in the winter; P2 = NTS followed biennially for a plowing in the winter; P3 = NTS followed every three years for a plowing and P4 = continuous NTS. Subplots were crop rotation with crops in the summer and winter: R1 = millet-common bean-millet-common bean-rice-common bean-millet-common bean-millet-common bean-rice-common bean; R2 = Soybean-common bean- soybean-wheat-rice -soybean-common bean- soybean-wheat-rice-common bean; R3 = corn-common bean-corn-tomato-rice-common bean-corn-common bean-corn-tomato-rice-common bean; R4 = millet-soybean-common bean -rice-common bean-millet-soybean-common bean-rice-common bean; R5 = millet-common bean-corn-common bean-rice-common bean-millet-common bean-corn-common bean-rice-common bean; R6 = Soybean-common bean-corn –common bean-rice-soybean-corn-common bean-rice-common bean. Each rotation cycle of three years crop season was repeated twice. Systems of soil management and crop rotations significantly affected soil chemical properties. The chemical attributes Ca, Mg, organic matter, P, K, Mn and Zn concentrated in the top-soil regardless of the crop rotation used in the managements of less soil disturbance. The pH values were simi-lar during the 12 seasons in six years. The crop rotations used in different soil managements under NTS provid-ed the improvement of soil fertility with values of organic matter, P, K, Cu, Mn and Zn contents equal to or higher than the initial values. © 2014, Universidade Federal Rural do Semi-Arid. All rights reserved. Source

da Costa Estrela D.,Federal University of Goais | de Souza D.C.,Instituto Federal Goiano Campus Urutai | de Souza J.M.,Instituto Federal Goiano Campus Urutai | da Silva Castro A.L.,Instituto Federal Goiano Campus Urutai
Check List | Year: 2015

Brazilian mammal fauna is considered to be the richest of the Neotropical region. However, in several regions of the country, there are gaps in the knowledge of its mammal fauna. Thus, we conducted a survey of the medium and large-sized mammal species in the fragmented Cerrado region in the southeast area of the state of Goiás. Nonlinear transects were conducted in 28 sessions over 13 months using direct observation methods, indirect observation methods (scratches, footprints, feces and lairs) and camera trapping. Twenty-five species belonging to eight orders were recorded. The species richness estimated by the Jackknife 1 method was 24.89 (±1.61) species in the transects and 16.88 (±1.29) species in camera trap, with stabilization of the species accumulation curves. Among the recorded species, 5 were endangered at the national level, and three were globally endangered. The high species richness found in the area in addition to the presence of endangered species highlights the need for conservation measures for the study site. © 2015, Check List and Authors. Source

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