Publicações - ciências agrárias
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BILA, NARCISO F;
TRIANOSKI, ROSILANI;
IWAKIRI, SETSUO;
EGAS, ANDRADE F.;
MANHIÇA, ALBERTO A.;
Márcio Pereira da Rocha
Palavra-chave:
Bonding quality;
edge glued panel;
emulsion polymeric isocyanate;
polyvinyl acetate;
value-added products;
Wood bonding
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Tecnologia e Utilização de Produtos Florestais; Processamento Mecânico da Madeira;
CIENCIAS_AGRARIAS; Recursos Florestais e Engenharia Florestal; Tecnologia e Utilização de Produtos Florestais; Tecnologia de Chapas
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Ivete Maria Grisa;
Leandro Flávio Carneiro;
Átila Francisco Mogor
Palavra-chave:
Pennisetum glaucum;
brassica oleracea;
cover plants;
vegetables;
nutrient cycling
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Tecnologia de Alimentos;
CIENCIAS_AGRARIAS; Agronomia; Fertilidade do Solo
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ABSTRACT For its production, broccoli requires large quantities of nutrients in relatively short...
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MAGRI, EDERLAN;
Motta, Antonio Carlos Vargas;
VALDUGA, ALICE TERESA;
GONÇALVES, ITAMAR LUIS;
BARBOSA, JULIERME ZIMMER;
RABEL, DIEGO DE OLIVEIRA;
MENEZES, IOHANNA MOREIRA NUNES RIBEIRO;
NASCIMENTO, PATRÍCIA DE ANDRADE;
OLIVEIRA, ANDREA;
CORRÊA, RODRIGO STUDART
Palavra-chave:
Ilex paraguariensis;
metais pesados
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Agronomia; Ciência do Solo; Fertilidade do Solo e Adubação;
CIENCIAS_AGRARIAS; Recursos Florestais e Engenharia Florestal; Silvicultura; Nutrição Florestal
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DE JESUS, GABRIEL LUCAS DE JESUS;
Volnei Pauletti;
CASSILHA ZAWADNEAK, MARIA APARECIDA;
Francine Lorena Cuquel
Palavra-chave:
Fragaria x ananassa Duch;
ammonium nutrition;
?San Andreas?;
soilless cultivation
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Agronomia; Ciência do Solo; Nutrição Mineral de Plantas
resumo ...
(en)
Strawberry (Fragaria x ananassa Duch.) production by using the semi-hydroponic fertigation system, is an increasingly adopted technology. One of the main challenges of this system is the nutritional management of nitrate (NO3-) and ammonium (NH4+), which can affect fruits development and quality. This work aims to determine the NO3-:NH4+ ratio of the nutrient solution for better quality of strawberry fruits grown in a semi-hydroponic system. ‘San Andreas’ strawberry runners were planted in an organic substrate composed by charred rice husk and pine bark. The NO3-:NH4+ proportions evaluated in fertigation were 100:0; 75:25; 50:50; 25:75 and 0:100. Leaf nitrogen contents and aerial dry mass loss showed a proportional increase concomitantly NH4+ increase on the solution. Leaf area and chlorophyll content increased up to 29% NH4+ in the nutrient solution, while higher concentrations negatively affected these characteristics. Chemical fruits’ features were not affected by the NO3-:NH4+ ratio, but the pulp firmness decreased as the NH4+ increased in the nutrient solution. Results obtained showed the best strawberry fruits development and quality were obtained by applying NO3-:NH4+ in fertigation solution at the ratio of 71:29.
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La producción de fresa (Fragaria x ananassa Duch.) mediante el uso del sistema de fertirrigación semihidropónico es una tecnología cada vez más adoptada. Uno de los principales desafíos de este sistema es el manejo nutricional del nitrato (NO3-) y el amonio (NH4+), que pueden afectar el desarrollo y la calidad de los frutos. Esta investigación tuvo como objetivo determinar la mejor relación NO3-:NH4+ para una mejor calidad de frutos de fresa cultivados en un sistema semihidropónico. Los corredores de fresa ‘San Andreas’ se plantaron en sustrato orgánico compuesto por cáscara de arroz carbonizada y corteza de pino. Las proporciones de NO3-:NH4+ evaluadas en fertirrigación fueron 100: 0; 75:25; 50:50; 25:75 y 0:100. El contenido de nitrógeno de las hojas y la pérdida de masa seca aérea mostraron un aumento proporcional concomitantemente con un aumento de NH4+ en la solución. El área foliar y el contenido de clorofila aumentaron hasta 29% de NH4+ en la solución nutritiva, mientras que concentraciones más altas afectaron negativamente estas características. Las características químicas de las frutas no se vieron afectadas por la relación NO3-:NH4+, pero la firmeza de la pulpa disminuyó a medida que aumentaba el NH4+ en la solución nutritiva. Los resultados obtenidos mostraron que los frutos de fresa con mejor desarrollo y calidad se obtuvieron aplicando NO3-:NH4+ en solución de fertirrigación en la proporción de 71:29.
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REIS, G.G.;
HEIDEMANN, M.S.;
GOES, H.A.A.;
Carla Forte Maiolino Molento
Palavra-chave:
Radical innovation;
Global value chain;
Environmental misconduct;
animal welfare;
cultivated meat
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Bem-estar animal
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Tatiana Suzin Lazeris;
Jéssica Pereira de Souza;
Fabiane Machado Vezzani;
Caroline Lima de Matos;
Glaciela Kaschuk
Palavra-chave:
matéria orgânica do solo;
uso do solo
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Agronomia; Ciência do Solo; Manejo e Conservação do Solo
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TRUJILLO CUELLAR, FLORENCIO TEODORO;
AGUIRRE CORTEZ, ALEX ALFREDO;
KLITZKE, RICARDO JORGE;
Márcio Pereira da Rocha;
GONZALES MORA, HECTOR ENRIQUE;
ARAUJO FLORES, MARTIN
Palavra-chave:
Immersion;
preservation treatment;
full-cell method;
treatment quality
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Tecnologia e Utilização de Produtos Florestais; Biodeterioração da madeira;
CIENCIAS_AGRARIAS; Recursos Florestais e Engenharia Florestal; Tecnologia e Utilização de Produtos Florestais; Tratamento da Madeira
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The quality of wood treatment, by retention and penetration of CCA-C was evaluated in pino chuncho wood ( Schizolobium amazonicum Huber. Ex Ducke), for non-structural use indoors (4 kg/m -3 ) and outdoors (6.4 kg/m -3 ) by the simple dipping (immersion) and full-cell methods. Thus, five trees from a 23-year-old plantation were randomly selected, producing 64 samples with a cross section of 50 mm x 50 mm and 500 mm long with 15% moisture content. The simple immersion treatment of 2 to 14 days showed average retentions between 1.5 to 3.7 kg/m -3 , similar to results by the full-cell method with a pressure of 120 lb./in. -2 by 10, 20 and 30 minutes of treatment showing average retentions from 3.2 to 3.9 kg/m -3 ; during both methods penetration of a partial vascular type preservative was applied. With 150 lb./in. -2 and 10, 20 and 30 minutes of treatment, retentions between 5.1 and 5.9 kg/m -3 , with irregular partial preservative penetrations were observed. Finally, with 180 lb./in. -2 for 10, 20 and 30 minutes of treatment, regular total preservative penetrations, and retention of 5.6, 7.4 and 8.1 kg/m -3 respectively, were achieved, suitable for non-structural use indoors (with 10 minutes), and indoors and outdoors (with 20 and 30 minutes). The influence of increased pressure on increased retention with the same treatment time was significant, unlike increasing the treatment time at the same treatment pressure. Keywords: Immersion, preservation treatment, full-cell method, treatment quality
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Giovana Scuissiatto de Souza;
Gabriela Oliveira da Paz Augusto Pinto;
Weslley Junior de Oliveira;
Rosangela Locatelli Dittrich
Palavra-chave:
Leucemia;
Hematologia Veterinária;
líquor
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Medicina Veterinária; Patologia Clínica Veterinária
resumo ...
(en)
Background: Acute lymphoblastic leukemia (ALL) is a malignant neoplasia in which there is proliferation of lymphoid progenitor cells in the bone marrow, blood, and extramedullary sites. This disorder has a fast and progressive development; in dogs, cases of infiltration of ALL cells in the central nervous system (CNS) are uncommon and rare. Diagnosis can be achieved with the help of the clinical history and physical, radiographic, hematological, myelographic, and cerebrospinal fluid (CSF) tests in patients with or without neurological clinical signs. The present report aims to describe a case of ALL and the presence of lymphoblasts in the CSF of a dog with neurological clinical signs.Case: An 8-year-old Lhasa Apso dog was examined at the Veterinary Hospital of Universidade Federal do Paraná, Curitiba campus. At the physical examination, the animal exhibited apathy and paralysis of pelvic limbs, which progressed to tetraplegia. Abdominal palpation revealed presence of hepatosplenomegaly and absence of lymphadenomegaly. No alterations were observed in radiographs of the cervical, thoracic or lumbar spine. A complete blood count revealed presence of non-regenerative anemia (hematocrit = 22%), extreme lymphocytosis (185,229 cells/µL), lymphoblasts at a level of 72% (133,364 cells/µL), and thrombocytopenia (66,000 platelets/µL). The biochemical tests revealed increased alkaline phosphatase (859 IU/L). The levels of alanine aminotransferase, creatinine, urea, total protein, albumin, and globulin were normal. The diagnosis of ALL was achieved with the help of a myelogram. The myelogram findings included 39% of mature lymphocytes and 59% of lymphoblasts exhibiting large size, spherical shape, poorly delimited borders, with a high nucleus/cytoplasm ratio, marked cytoplasmic basophilia, and 2 to 3 evident nucleoli; metarubricytes (1%) and promyelocytes (0.6%) were also observed. The CSF contained an increased number of nucleated cells (27 cells/µL) comprising lymphocytes (43%), macrophages (33%), and segmented neutrophils (24%). Of the 11.6 lymphocytes per µL of CSF, 8.1 were lymphoblasts, which indicates infiltration of ALL cells in the CNS. The animal died one day after collection of bone barrow and CSF. Discussion: Relevant alterations observed in this case included the neurological signs caused by the infiltration of neoplastic cells in the CNS, severe leukocytosis and lymphocytosis, with large amounts of lymphoblasts in the blood and predominance of lymphoblasts in the bone marrow, which are alterations typically found in ALL. The animal also exhibited non-regenerative anemia and thrombocytopenia, which were secondary to infiltration of leukemic cells in the bone marrow. The CSF exhibited pleocytosis (27 cells/ µL), and 30% of the cells observed were lymphoblasts. Lymphoblast infiltration in the CNS of leukemic dogs is rare, and other studies have reported absence of neurological signs or neurological signs different from those observed in the present study. CSF analysis in indicated in cases of leukemia to assess leukemic cell infiltration in the CNS. In the case reported here, the plasma level of alkaline phosphatase was increased (859 IU/L) as a consequence of hepatomegaly and hepatic cholestasis. ALL is a very aggressive, proliferative neoplasia, and the resulting lymphoblasts infiltrated the CNS of the animal. In cases of ALL, performing complete blood count, myelogram, and CSF analysis is indicated whether the patients exhibit neurological signs or not.
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RODRIGUES, LEILANE KARAM;
CHAVES, ALEXANDRE LEVI RODRIGUES;
Elliot Watanabe Kitajima;
Renata Faier Calegario;
BRUNELLI, KATIA REGIANE;
DA SILVA, FABIO NASCIMENTO;
HARAKAVA, RICARDO;
WALSH, JOHN ANTHONY;
Eiras, Marcelo
Palavra-chave:
Turnip mosaic virus;
Isolado brasileiro;
Caracterização
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Turnip mosaic virus (TuMV) infects many plant species, being the only potyvirus able to infect brassicas. TuMV isolates have been classified into 12 pathotypes according to symptoms induced in lines of Brassica napus, and molecularly clustered into six lineages (basal-B, basal-BR, Asian-BR, world-B, Iranian and OMs). Despite being considered one of the most important viruses infecting brassicas worldwide, there is little information on this virus in the Neotropical region. Aiming to fill in this gap and advance knowledge on occurrence, genetic variability, and biological aspects of TuMV in Brazil, 40 isolates were identified and characterised. Five of these isolates were selected to determine their host range, sequence their genomes, and for phylogenetic, recombination and diversity analyses. Mechanical inoculations performed on plant species from 10 families showed differences in symptom expression among isolates. Inoculations of 13 TuMV isolates in B. napus lines revealed occurrence only of the pathotype 1. According to phylogenetic analyses of the coat protein, TuMV Brazilian isolates clustered into the groups: world-B (subgroups world-B2 and world-B3) and basal-BR. In the latter, there was a formation of a subclade named Brazilian subgroup composed by 31 Brazilian TuMV isolates. Intralineage and interlineage recombination events of world-B, basal-B and basal-BR suggest that Brazilian TuMV isolates had a European origin. Our diversity analysis suggest that a strong negative selection is acting on polyprotein coding region. We confirmed that Brazilian TuMV isolates showed high variability, which together with their ability to infect wild brassicas and to circumvent resistance genes highlight their genetic and epidemiological potential in causing damages in cultivated species of brassicas and other crops in Brazil.
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SANTOS, MICAEL MOREIRA;
Antonio Carlos Batista;
Allan Deyvid Pereira da Silva;
Eduardo Ganassoli Neto;
Carolina Sena Barradas;
GIONGO, MARCOS
Palavra-chave:
fuel loading;
fire management;
Grassland biomass
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Recursos Florestais e Engenharia Florestal; Conservação da Natureza; Controle de incêndios florestais;
CIENCIAS_AGRARIAS; Recursos Florestais e Engenharia Florestal; Silvicultura; Fisiologia Florestal;
CIENCIAS_AGRARIAS; Recursos Florestais e Engenharia Florestal; Conservação da Natureza; Recuperação de Areas Degradadas
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The aim of the present study was to evaluate the characteristics of surface fuel during the dry season in areas with different periods without the occurrence of burn, in the grasslands phytophysiognomy of the Cerrado in the Jalapão region of Brazil. Fuel sampling was conducted in areas with different periods without burning over four months during the dry season (May, June, August, and September). A total of 128 samples, named as data samples, were established, from which eight subsamples designated as parcels of fuel sampling were collected. In each parcel of fuel sample, we evaluated variables related to non-destructive methods such as the height of grass vegetation (Htg), litter height (Htl), number of species (Nsp), and number of individuals (Nin), as well as variables related to the destructive method for obtaining the fuel load. The fuel was separated according to its physiological state and diameter (time-lag). The Htg variable was highest and was stabilized by the second year post-burning. Nsp showed a reduced number of areas after four years without burning and in the last month of the dry season. The behavior of the dead grass fuel (Dg) load in the samplings collected in the first two months of the dry season was the only variable that increased in the different years without burning. These results are important for management initiatives of Cerrado grassland fuels in the Jalapão region.
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