Navegação Ciências Agrárias por Título
Resultados 3309-3328 de 3899
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Riparian forest fragments in rice fields under different management : differences on hymenopteran parasitoids diversity
(2020) [Artigo de periódico]Hymenopteran parasitoids are important biological control agents in agroecosystems, and their diversity can be increased with habitat heterogeneity. Thus, the purpose of the study is to evaluate the influence of distance ... -
O risco à saúde dos brasileiros no consumo de frutas, legumes e verduras com resíduos de agrotóxicos e as oportunidades emergentes
(2016) [Artigo de periódico]O objetivo desta pesquisa foi identificar o risco à saúde da população no consumo de frutas, legumes e verduras (FLVs) com resíduos de agrotóxicos e avaliar como os gestores do setor varejista oportunizam atender à demanda ... -
Risco de deficiência hídrica decendial na metade sul do Estado do Rio Grande do Sul
(2006) [Artigo de periódico]Conduziu-se o presente estudo com o objetivo de se avaliar o risco de ocorrência de deficiência hídrica decendial da metade sul do estado do Rio Grande do Sul; para tanto, obtiveram-se dados diários de temperatura máxima ... -
Riscos e benefícios do uso de plantas transgênicas na agricultura
(1996) [Artigo de periódico] -
Risk-factor analysis for feline hyperthyroidism in the metropolitan area of Porto Alegre : a pilot case-control study
(2019) [Artigo de periódico]Background: Hyperthyroidism is the most common endocrinopathy in elderly cats and its prevalence varies greatly geographically. Since it was first described in 1979, it has shown a continuously increasing incidence. This ... -
Risk factors and likelihood of campylobacter colonization in broiler flocks.
(2007) [Artigo de periódico]Campylobacter was investigated in cecal droppings, feces, and cloacal swabs of 22 flocks of 3 to 5 week-old broilers. Risk factors and the likelihood of the presence of this agent in these flocks were determined. Management ... -
Risk factors associated with stillbirth in sows
(2023) [Artigo de periódico]In this study, the risk factors associated with stillbirth in sows were identified and their odds ratio assessed. For this purpose, 587 farrowings on Farm A and 929 on Farm B were monitored, and the sow parity, body condition ... -
Risk factors for Salmonella, Shiga toxin-producing Escherichia coli and Campylobacter occurrence in primary production of leafy greens and strawberries
(2017) [Artigo de periódico]The microbiological sanitary quality and safety of leafy greens and strawberries were assessed in the primary production in Belgium, Brazil, Egypt, Norway and Spain by enumeration of Escherichia coli and detection of ... -
Risk factors for Salmonella, Shiga toxin-producing Escherichia coli and Campylobacter occurrence in primary production of leafy greens and strawberries
(2015) [Artigo de periódico]The microbiological sanitary quality and safety of leafy greens and strawberries were assessed in the primary production in Belgium, Brazil, Egypt, Norway and Spain by enumeration of Escherichia coli and detection of ... -
Risk of death in hospitalized dogs with hemostatic profile disorders
(2020) [Artigo de periódico]Identifying patients who have a higher risk of death is crucial to define appropriate risk classification, treatment and prognosis, which can result in a favorable outcome. The objective of this retrospective study was to ... -
Risks associated to different methods of increasing pregnancy rate of cows in cow-calf systems
(2018) [Artigo de periódico] -
Rizóbios nativos do Rio Grande do Sul simbioticamente eficientes em Lotus glaber
(2011) [Artigo de periódico]As leguminosas forrageiras, além de contribuírem para o aumento da oferta de forragem com alto teor de proteína, também são importantes como cobertura vegetal de solos. Entre as leguminosas com grande potencial forrageiro, ... -
Rizóbios nativos eficientes en la fijación de nitrógeno en Leucaena leucocephala en Rio Grande do Sul, Brasil
(2021) [Artigo de periódico]La selección de rizobios nativos fijadores de nitrógeno (N) es importante para la producción de leucaena utilizada en la producción pecuaria. En el estado de Rio Grande do Sul (RS), Brasil es escasa la información de cepas ... -
Role of ferritin in the rice tolerance to iron overload
(2009) [Artigo de periódico]Deficiência de ferro (Fe) ocorre freqüentemente em plantas, uma vez que este mineral é pouco disponível em condições aeróbicas. Plantas de arroz cultivadas sob alagamento, no entanto, estão sujeitas ao excesso de Fe, que ... -
Root distribution of peach rootstocks affected by soil compaction and acidity
(2016) [Artigo de periódico]Root growth can be limited by physical and chemical conditions of the soil. Compacted and acidic soils, where there is an occurrence of exchangeable Al, constitute barriers to use of the soil by plant roots. The hypothesis ... -
Root exudation of oxalic acid in Lotus corniculatus in response to aluminum toxicity
(2022) [Artigo de periódico]The objective of this research was to identify the existence of root exudation of organic acid in Lotus corniculatus germplasms subjected to toxic aluminum (Al) levels and investigate the effect of this mechanism on the ... -
Rooting and acclimatization of micropropagated marubakaido apple rootstock using Adesmia latifolia rhizobia
(2013) [Artigo de periódico]In vitro rooting and the acclimatization of micropropagated rootstocks of apple trees is essential for plant development in the field. The aim of this work was to assess the use of rhizobia of Adesmia latifolia to promote ... -
Rooting of apical cuttings of Angelonia integerrima Sprengel : concentrations of indole-3-butyric acid and substrates
(2018) [Artigo de periódico]The objective of this study was to evaluate the effect of the concentration of indole-3-butyric acid (IBA) and substrates in the rooting of apical cuttings of Angelonia integerrima. Powder IBA was used at the concentrations ... -
Rúcula hidropônica sob diferentes densidades e concentrações de solução no período de outono e inverno
(2021) [Artigo de periódico]No cultivo de rúcula em sistema NFT (Nutrient Film Technique), a recomendação sobre densidades de plântulas por molho advém da adaptação das técnicas utilizadas nos cultivos em solo. Já para o preparo da solução nutritiva, ... -
Rumenostomia com colocação de cânula flexível em ovinos.
(2008) [Artigo de periódico]A colocação de cânulas no sistema digestório é freqüentemente requisitada para estudos experimentais de digestibilidade, principalmente em animais de produção. A colocação de cânulas impede o extravasamento de gás e conteúdo ...
