Agroecosystems
Mostrando 13-24 de 114 artigos, teses e dissertações.
-
13. Chemical Properties in Macroaggregates of a Humic Dystrudept Cultivated with Onion under No-Till and Conventional Tillage Systems
ABSTRACT Nutrients present in soil aggregates are essential for maintaining the productive capacity of agroecosystems and environmental quality. The aim of this study was to evaluate the chemical properties of macroaggregates of a Humic Dystrudept cultivated with onions under a no-till vegetable system (NTVS) compared to the conventional tillage system (CTS)
Rev. Bras. Ciênc. Solo. Publicado em: 22/06/2017
-
14. Functional Genes of Microorganisms, Comprehending the Dynamics of Agricultural Ecosystems
ABSTRACT The microbial composition of different types,in ecosystems (including agro-ecosystems), has been investigated in a rapidly growing number of studies in the past few years. The importance of microorganisms, regarding the maintenance and stability of nutrients in agroecosystems, is a key to maintain the sustainability of a crop. Molecular tools to stu
Braz. arch. biol. technol.. Publicado em: 02/05/2017
-
15. Dung Beetles Associated with Agroecosystems of Southern Brazil: Relationship with Soil Properties
ABSTRACT Knowing the biodiversity of dung beetles in agricultural and livestock environments is the basis for understanding the contribution that these organisms make in nutrient cycling and ecosystem functions. The aim of the present study was to investigate the structure of copronecrophagous dung beetle communities inhabiting the main agroecosystems in sou
Rev. Bras. Ciênc. Solo. Publicado em: 27/03/2017
-
16. Is the emergence of fungal resistance to medical triazoles related to their use in the agroecosystems? A mini review
Abstract Triazole fungicides are used broadly for the control of infectious diseases of both humans and plants. The surge in resistance to triazoles among pathogenic populations is an emergent issue both in agriculture and medicine. The non-rational use of fungicides with site-specific modes of action, such as the triazoles, may increase the risk of antifung
Braz. J. Microbiol.. Publicado em: 2016-12
-
17. Spatial modeling of cutaneous leishmaniasis in the Andean region of Colombia
The objective of this research was to identify environmental risk factors for cutaneous leishmaniasis (CL) in Colombia and map high-risk municipalities. The study area was the Colombian Andean region, comprising 715 rural and urban municipalities. We used 10 years of CL surveillance: 2000-2009. We used spatial-temporal analysis - conditional autoregressive P
Mem. Inst. Oswaldo Cruz. Publicado em: 27/06/2016
-
18. Changes in Soil Organic Carbon and Nitrogen Stocks in Long-Term Experiments in Southern Brazil Simulated with Century 4.5
ABSTRACT The Century model has successfully simulated soil organic matter dynamics in many agroecosystems. However, initial applications in southern Brazil produced mixed results. The objective of this study was to calibrate and validate Century 4.5 to simulate soil carbon (C) and nitrogen (N) dynamics under diverse soil management practices in subtropical B
Rev. Bras. Ciênc. Solo. Publicado em: 31/05/2016
-
19. Carbon Stocks in Compartments of Soil Organic Matter 31 Years after Substitution of Native Cerrado Vegetation by Agroecosystems
ABSTRACT Changes in carbon stocks in different compartments of soil organic matter of a clayey Latossolo Vermelho Distrófico (Typic Haplustox), caused by the substitution of native savanna vegetation (cerrado sensu stricto) by agroecosystems, were assessed after 31 years of cultivation. Under native vegetation, a stock of 164.5 Mg ha-1 C was estimated in th
Rev. Bras. Ciênc. Solo. Publicado em: 29/04/2016
-
20. Four-way data analysis within the linear mixed modelling framework
Cultivars have to be evaluated under different crop management systems across agro-ecosystems and years using multi-environment trials (MET) before releasing them to the market. Frequently, data collected in METs are arranged according to cultivar (G), management (M), location, (L) and year (Y) combinations in a four-way G x M x L x Y data table that is high
Sci. agric. (Piracicaba, Braz.). Publicado em: 2015-10
-
21. TIPOLOGÍA Y USOS DEL SUELO EN AGROECOSISTEMAS DEL VALLE DEL GUAMUEZ, PUTUMAYO – COLOMBIA
ABSTRACT The objective of this research was to analyze different agroecosystems located in a region of the Departamento de Putumayo (Colombia) and its sociocultural relationship with productive and land conservation contexts, based on the conceptual and methodological aspects of agroecology. A mixed methods study was carried out, and soil testing methodologi
Soc. nat.. Publicado em: 2015-08
-
22. Diversidade de fungos micorrízicos arbusculares em pomar orgânico no semiárido cearense
The arbuscular mycorrhizal fungi (AMF) are key-organisms for maintenance of plant biodiversity in agroecosystems. There is an increasing interest in changes of the microbiological properties in the rhizosphere by its practical and environmental relevance. This research aimed to evaluate the occurrence of AMF in the establishment of fruits under organic manag
Cienc. Rural. Publicado em: 2015
-
23. Species composition and seasonal abundance of sandflies (Diptera: Psychodidae: Phlebotominae) in coffee agroecosystems
The composition and seasonal occurrence of sandflies were investigated in coffee agroecosystems in the Soconusco region of Chiapas, Mexico. Insect sampling was performed on three plantations located at different altitudes: Finca Guadalupe Zajú [1,000 m above sea level (a.s.l.)], Finca Argovia (613 m a.s.l.) and Teotihuacán del Valle (429 m a.s.l.). Sandfli
Mem. Inst. Oswaldo Cruz. Publicado em: 04/11/2013
-
24. Adoção de práticas de manejo da agrobiodiversidade e estratégias de diversificação dos meios de vida das comunidades rurais em Pirenópolis - Goiás / Adoption of management practices of agrobiodiversity and livelihoods diversification strategies of rural communities in pirenópolis - Goiás
The agroecological principles applied on agrobiodiversity management have been seen as a strategic tool for sustainability in agro-ecosystems for rehabilitation of socioeconomic and environmental conditions and for food security purposes. The present research analyzes the adoption of these basic recommended practices on the agrobiodiversity management, consi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/08/2012