Rice Fields
Mostrando 1-12 de 55 artigos, teses e dissertações.
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1. Mapping of spatiotemporal distribution of Tibraca limbativentris Stal (Hem.: Pentatomidae) in flooded rice crop in Southern Brazil
ABSTRACT The rice stem bug, Tibraca limbativentris Stal (Hem.: Pentatomidae), is one of the main insect pests in Brazilian rice crops. Knowledge of its spatiotemporal distribution can support the development of an effective sampling system and improve IPM strategies. This study aimed to map the spatiotemporal distribution of rice stem bug in flooded rice cro
Rev. Bras. entomol.. Publicado em: 05/09/2019
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2. Os negros d’água do rio Ribeira de Iguape: mito e história numa narrativa elaborada por comunidades negras do Vale do Ribeira
RESUMO Este artigo aborda a importância das águas do rio Ribeira de Iguape para a história do Vale do Ribeira. Suas águas foram exploradas desde o século XVI, quando da sua foz partiam expedições em busca de metais. Posteriormente, metais preciosos foram descobertos no Alto e no Médio Vale, onde se estabeleceram arraiais mineradores. No final do séc
Rev. Bras. Hist.. Publicado em: 29/07/2019
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3. Riparian forest fragments in rice fields under different management: differences on hymenopteran parasitoids diversity
Resumo Os himenópteros parasitoides são importantes agentes de controle biológico em agroecossistemas com sua diversidade variando de acordo com a heterogeneidade de habitat. Nesse sentido, o objetivo deste trabalho foi avaliar a influência da distância de áreas com fragmentos de vegetação natural das áreas de cultivo de arroz, o tipo de manejo (org
Braz. J. Biol.. Publicado em: 02/05/2019
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4. Soil CH4 and N2O Emissions from Rice Paddy Fields in Southern Brazil as Affected by Crop Management Levels: a Three-Year Field Study
ABSTRACT Rice yield increases in response to improvements in crop management, but the impact on greenhouse gas (GHG) emissions in the subtropical region of Southern Brazil remains unknown. A three-year field study was developed aiming to evaluate the impact that an increase in crop management levels (high and very high) has on soil methane (CH4) and nitrous
Rev. Bras. Ciênc. Solo. Publicado em: 03/05/2018
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5. Returning Winter Cover Crop Residue Influences Soil Aggregation and Humic Substances under Double-cropped Rice Fields
ABSTRACT Residue management in cropping systems may improve soil quality. However, there are few studies on the effects of residue management on soil aggregation and carbon content in the humin (C-HUM), humic acid (C-HAF) and fulvic acid (C-FAF) fractions in South China. Therefore, the effects on soil aggregation and on the C-HUM, C-HAF, C-FAF from incorpora
Rev. Bras. Ciênc. Solo. Publicado em: 09/11/2017
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6. Responses of water mite assemblages (Acari) to environmental parameters at irrigated rice cultivation fields and native lakes
ABSTRACT Many studies have revealed that water mite communities can be affected by the physical and chemical parameters of the water. The similarity between the water ‘mite assemblages in local water bodies and in irrigated rice areas can be a way to measure the water conditions, enabling an assessment of the anthropic impact in the environment. The aim of
Zoologia (Curitiba). Publicado em: 23/10/2017
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7. Assessment of Rice Associated Bacterial Ability to Enhance Rice Seed Germination and Rice Growth Promotion
ABSTRACT The application of beneficial bacteria has recently been used for sustainable agriculture. In current research, 71 bacterial isolates were obtained from rice plant and the rhizosphere soil of different paddy fields in Guilan province, Iran. After primitive investigation, 40 bacteria with typical predominant characteristics were selected. By PCR-RFLP
Braz. arch. biol. technol.. Publicado em: 17/08/2017
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8. Attraction factors for Paederus fuscipes ' dispersal, a vector of Paederus dermatitis towards human residential premises
ABSTRACT Paederus fuscipes, a vector of Paederus dermatitis in most tropical and subtropical countries of the world have a high prevalence in human dwellings due to their positively phototaxic behaviour which has caused a tremendous impact on human health. In this paper, P. fuscipes dispersal flights were studied for two seasons of the rice cultivation phase
Rev. Inst. Med. trop. S. Paulo. Publicado em: 03/04/2017
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9. Physical Properties and Crop Management for Corn in an Albaqualf
ABSTRACT Rice monoculture in lowlands can cause problems for management practices in crop fields, for example, in weed control. For this reason, corn in rotation with irrigated rice in lowlands may be advantageous, despite problems with soil compaction and water excess. The objective of this study was to evaluate soil physical properties and corn performance
Rev. Bras. Ciênc. Solo. Publicado em: 27/03/2017
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10. Richness and density of aquatic benthic macroinvertebrates after exposure to fungicides and insecticides in rice paddy fields
ABSTRACT The objective of this study was to verify the richness and density of aquatic benthic macroinvertebrates after exposure to fungicides and insecticides of the rice paddy fields. In the crop seasons of 2012/13 and 2013/14, field experiments were performed, which consisted of single-dose applications of the fungicides trifloxystrobin + tebuconazole and
An. Acad. Bras. Ciênc.. Publicado em: 02/03/2017
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11. Distribution of copper in soil and rice system of Hainan Island, China
ABSTRACT This research aimed to discover the distribution and the primary influence factors of Cu in the soil-rice systems of tropical farmland. Soil samples of farmland and rice plant (stalk and polished rice) from the western region of Hainan Island were collected and studied. The results showed that the average Cu content in the topsoil of the study area
Braz. arch. biol. technol.. Publicado em: 20/10/2016
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12. Microbial, physical and chemical properties of irrigation water in rice fields of Southern Brazil
RESUMO Este artigo apresenta os resultados da análise estatística dos parâmetros microbiológicos, físicos e químicos relacionados à qualidade da água utilizada em campos de arroz no sul do Brasil. Os dados foram coletados durante três anos agrícolas consecutivos, dentro da estrutura de um programa abrangente de monitoramento. Os indicadores utiliza
An. Acad. Bras. Ciênc.. Publicado em: 04/03/2016