Publicações - ciências agrárias
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Diana Rosana Vivian;
Américo Fróes Garcez Neto;
José Antônio de Freitas;
Sergio Rodrigo Fernandes;
Sandra Rozanski
SEMINA. CIÊNCIAS AGRÁRIAS (ONLINE),
v. 38,
p. 919-930,
2017
Palavra-chave:
lambs;
Non protein Nitrogen;
nutrition
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Medicina Veterinária; Nutrição Animal
resumo ...
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José Gilberto Sousa Medeiros;
Claudine Maria de Bona;
Francine Lorena Cuquel;
Luis Antonio Biasi
Palavra-chave:
Mirtilo;
cultivares
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Fitotecnia; Manejo e Tratos Culturais
resumo ...
ABSTRACT: Evaluation of yield performance is important to find the most adapted blueberry...
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José Gilberto Souza Medeiros;
Luis Antonio Biasi;
CLAUDINE MARIA DE BONA;
Francine Lorena Cuquel
Palavra-chave:
Pós-colheita
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Pós-colheita;
CIENCIAS_AGRARIAS; Agronomia; Fitotecnia
resumo ...
ABSTRACT: Evaluation of yield performance is important to find the most adapted blueberry...
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PIOVESAN, MÔNICA;
SPECHT, ALEXANDRE;
Eduardo Carneiro dos Santos;
PAULA-MORAES, SILVANA VIEIRA;
Mirna Martins Casagrande
Palavra-chave:
armyworms;
Cerrado;
circular statistics;
Soybean
Áreas do conhecimento:
Ciências Biológicas; Entomologia;
Ciências Biológicas; Zoologia; Zoologia Aplicada; Controle Populacional de Animais;
CIENCIAS_AGRARIAS; Agronomia; Ciência do Solo; Fertilidade do Solo e Adubação
resumo ...
The identification of factors responsible for the population dynamics is fundamental for pest management, since losses can reach 18% of annual production. Besides regular seasonal environmental factors and crop managements, additional supra-annual meteorological phenomena can also affect population dynamics, although its relevance has been rarely investigated. Among crop pests, Spodoptera stands out due to its worldwide distribution, high degree of polyphagy, thus causing damages in several crops in the world. Aiming to distinguish the relevance of different factors shaping population dynamics of Spodoptera in an ecosystem constituted of dry and rainy seasons, the current study used circular statistics to identify phenological patterns and test if its population fluctuation is driven by El Niño-Southern Oscillation (ENSO) effect, seasonal meteorological parameters, and/or host plant availability. Samplings were done in an intercropping system, in the Brazilian Savanna, during the new moon cycles between July/2013 and June/2016. Species were recorded all year round, but demonstrated differently non-uniform distribution, being concentrated in different seasons of the year. Population fluctuations were mostly affected by the ENSO intensity, despite the contrasting seasonal meteorological variation or host plant availability in a 400-m radius. Studies involving the observation of supra-annual phenomena, although rare, reach similar conclusions in relation to Neotropical insect fauna. Therefore, it is paramount to have long-term sampling studies to obtain a more precise response of the pest populations towards the agroecosystem conditions.
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PIOVESAN, MÔNICA;
SPECHT, ALEXANDRE;
Eduardo Carneiro dos Santos;
PAULA-MORAES, SILVANA VIEIRA;
Mirna Martins Casagrande
Palavra-chave:
armyworms;
Cerrado;
circular statistics;
Soybean
resumo ...
The identification of factors responsible for the population dynamics is fundamental for pest management, since losses can reach 18% of annual production. Besides regular seasonal environmental factors and crop managements, additional supra-annual meteorological phenomena can also affect population dynamics, although its relevance has been rarely investigated. Among crop pests, Spodoptera stands out due to its worldwide distribution, high degree of polyphagy, thus causing damages in several crops in the world. Aiming to distinguish the relevance of different factors shaping population dynamics of Spodoptera in an ecosystem constituted of dry and rainy seasons, the current study used circular statistics to identify phenological patterns and test if its population fluctuation is driven by El Niño-Southern Oscillation (ENSO) effect, seasonal meteorological parameters, and/or host plant availability. Samplings were done in an intercropping system, in the Brazilian Savanna, during the new moon cycles between July/2013 and June/2016. Species were recorded all year round, but demonstrated differently non-uniform distribution, being concentrated in different seasons of the year. Population fluctuations were mostly affected by the ENSO intensity, despite the contrasting seasonal meteorological variation or host plant availability in a 400-m radius. Studies involving the observation of supra-annual phenomena, although rare, reach similar conclusions in relation to Neotropical insect fauna. Therefore, it is paramount to have long-term sampling studies to obtain a more precise response of the pest populations towards the agroecosystem conditions.
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Dagma Kratz;
Antonio Carlos Nogueira;
Ivar Wendling;
José Elias Mellek
Scientia Forestalis,
v. 45,
p. 63-76,
2017
Palavra-chave:
Moinha de carvão;
turfa;
casca de pinus;
Casca arroz carbonizada;
Biossólido
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Produção de mudas florestais
resumo ...
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Thiago Souza da Rosa;
Vinicius Rosa Schweitzer;
TRIANOSKI, R.;
Setsuo Iwakiri
FLORESTA (ONLINE) (CURITIBA),
v. 47,
n. 3,
p. 317-322,
2017
Palavra-chave:
mineral panels;
fast growing species;
oriented particles
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Tecnologia e Utilização de Produtos Florestais; Tecnologia de Chapas
resumo ...
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Camila Ribeiro de Souza Grzybowski;
NASCIMENTO, WALNICE MARIA OLIVEIRA DO;
Silva, Rosemeire Carvalho da;
VIEIRA, Elisa Serra Negra;
Maristela Panobianco
Palavra-chave:
ANALISE
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Tecnologia de Alimentos
resumo ...
ABSTRACT The goal of the present study is to assess the physiological potential of Byrsonima...
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ROCHA, RM;
CASTELLANO, GC;
Carolina Arruda de Oliveira Freire
Palavra-chave:
ascídias;
ions;
Temperatura
Áreas do conhecimento:
Ciências Biológicas; Fisiologia Comparada; Fisiologia Comparativa da Osmorregulação;
CIENCIAS_AGRARIAS; Recursos Pesqueiros e Engenharia de Pesca; Recursos Pesqueiros de Águas Interiores; Comparação de tolerância fisiológica entre espécies nativas e invasoras
resumo ...
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Juliano Cordeiro;
RODERJAN, CARLOS VELOSO;
CURCIO, GUSTAVO RIBAS
Palavra-chave:
Compartimentação ambiental;
floresta com araucária;
solos florestais
Áreas do conhecimento:
Ciências Biológicas; Bioquímica dos Microorganismos; Enzimologia;
Ciências Biológicas; Botânica; Métodos de Estudos da Vegetação;
CIENCIAS_AGRARIAS; Agronomia; Ciência do Solo; Gênese, Morfologia e Classificação dos Solos
resumo ...
(pt)
O presente trabalho teve como objetivo caracterizar a estrutura fitossociológica de um remanescente de Floresta Ombrófila Mista sobre Latossolo Bruno localizado na fazenda Três Capões, em Guarapuava-PR, sob uma cota altimétrica de 960 m. Essa tipologia, no passado, chegou a recobrir mais de um terço do território paranaense, sendo influenciada por diferentes condições ambientais e tipos de solos que exerceram influência tanto na composição de sua estrutura horizontal quanto vertical. Foram instaladas 22 parcelas fixas de 10x10 m, em uma área homogênea de vegetação de 2,2 ha. A unidade pedológica identificada foi de Latossolo Bruno Tb Distrófico Típico. O critério de inclusão para o levantamento fitossociológico foi a medida do diâmetro à altura do peito dos indivíduos arbóreos ≥4,78 cm. Foram mensurados 423 indivíduos pertencentes a 35 espécies e a 20 famílias botânicas. Os resultados da estrutura horizontal do remanescente mostraram densidade absoluta de 1923 ind/ha-1 e área basal de 64,26 m2 /ha-1. Pela análise de agrupamento utilizando a variável de VI%, as espécies foram reunidas em três grupos: I) Predominantes ou principais, II) Intermediárias e III) Ocasionais. As espécies que se destacaram na estrutura florestal foram Araucaria angustifolia (Bertol.) Kuntze com VI de 18,29% e Eugenia uniflora L. com 12,97%. Essas duas espécies representam apenas 5,7% da riqueza total e foram responsáveis por 47,0 % da área basal (30,52 m2 /ha-1) e 28,13% dos indivíduos amostrados. Pode-se afirmar que a flora do remanescente é constituída por espécies características da Floresta Ombrófila Mista e a estrutura do remanescente exibiu valores diferenciais para esse tipo de condição pedológica. Abstract This study aimed to characterize the vegetation structure of a remnant of a Mixed Ombrophylous Forest on Latossolo Bruno, which is located on the farm Três Capões in Guarapuava-PR. This typology in the past covered more than a third of the territory of Paraná and was influenced by different environmental conditions and types of soils that exerted influence both in the composition of its horizontal and vertical structure. The altimetric quota is 960 above sea level. Twenty - two fixed plots of 10x10 m were installed in a homogeneous area of vegetation of 2.2 ha. The identified pedological unit was of Latosol Bruno Tb Distrophic Typical. The inclusion criterion for the phytosociological survey was a measure of the diameter at the chest height of the arboreal individuals ≥4.78 cm. 423 individuals belonging to 35 species and 20 botanical families were measured. The results of the horizontal structure of the remnant showed absolute density of 1923 ind.ha-1 and basal area of 64.26 m2 .ha-1. By cluster analysis using the VI% variable the species were grouped into three groups: I) Predominant or main, II) Intermediate and III) Occasional. The species that stood out in the forest structure were Araucaria angustifolia (Bertol.) Kuntze with VI of 18.29% and Eugenia uniflora L. with 12,97%. These two species represent only 5.7% of the total richness and were responsible for 47.0% of the basal area (30.52 m2 /ha-1) and 28.13% of the individuals sampled. It can be affirmed that the flora of the remnant is constituted by species characteristic of the Mixed Ombrophilous Forest and the structure of the remnant exhibited differential values for this type of pedological condition.
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