Consulta: subjectFacets:"Monoculture"
Registros recuperados: 8
Data/hora: 02/06/2024 01:34:41

Functional Links Between Biodiversity, Livelihoods, and Culture in a Hani Swidden Landscape in Southwest China
Provedor de dados: 7
Autores: Xu, Jianchu; Center for Mountain Ecosystem Studies, Kunming Institute of Botany, Chinese Academy of Sciences; World Agroforestry Centre, China Program ; J.C.Xu@CGIAR.ORG; Lebel, Louis; Unit for Social and Environmental Research, Chiang Mai University; llebel@loxinfo.co.th; Sturgeon, Janet; Department of Geography, Simon Fraser University; sturgeon@sfu.ca.
The landscape of Mengsong, southwest China, was biologically diverse until recently due to historical biogeographical processes overlain by the swidden-cultivation practices of the Hani who migrated there several centuries ago.  Our research sought to understand how the Hani adjusted their livelihoods to new policies, markets, and technologies, and the consequences for biodiversity conservation.  We combined landscape, plot, and household surveys, interviews, and reviews of secondary documents, to reconstruct the major changes and responses to challenges in the social&amp;#8211;ecological system over previous decades.  Significant changes from closed to open canopy of secondary-forest vegetation took place between 1965&amp;#8211;1993 and from open-canopy...
Tipo: Peer-Reviewed Reports
Palavras-chave: Biodiversity; Cash crops; Conservation and development; Culture; Fallow management; Hani people; Livelihoods; Monoculture; Swidden landscape.
Ano: 2009

Avaliação de genótipos de feijão nos sistemas em monocultivo e consorciado com o milho. II. Ensaios de rendimentos, 1986, 1987 e 1988.
Provedor de dados: 14
Autores: CARVALHO, H. W. L. de; SERPA, J. E. S.
bitstream/item/44460/1/CPATC-DOCUMENTOS-6-AVALIACAO-DE-GENOTIPOS-DE-FEIJAO-NOS-SISTEMAS-EM-MONOCULTIVO-E-CONSORCIADO-COM.pdf
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Consorcio; Monocultivo; Intercropping crops; Maiz; Bean; Monoculture; Planting systems; Interaction; Virus diseases; Yield tests.; Cultivo Anual; Feijão; Milho.
Ano: 1989
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/357130

Drastic population size change in two populations of the Golden-striped salamander over a forty year period - are eucalypt plantations to blame?
Provedor de dados: 16
Autores: Arntzen, J.W.
Over the last half century the Iberian peninsula has seen the large scale planting of exotic gum trees (Eucalyptus sp.) therewith reducing space for native wildlife. An additional effect of the gum tree plantations may be the lowering of the water table in adjacent streams, to which amphibian species with a larval niche in the running sections of small streams would be especially susceptible. In northwestern Iberia that niche is occupied by the Golden-striped salamander, Chioglossa lusitanica. I here report on the demographic trends of two C. lusitanica populations over a forty year period, in two areas of one mountain range near Porto in northwestern Portugal. In both areas advantage was taken of the migration pattern of C. lusitanica to sites for...
Tipo: Article / Letter to the editor
Palavras-chave: Amphibian decline; Chioglossa lusitanica; Demographic modelling; Gum tree; Iberia; Monoculture; Portugal; Urodela; Vortex; 42.82.
Ano: 2015
URL: http://www.repository.naturalis.nl/record/569285

Azteca barbifex Forel (Hymenoptera: Formicidae): potential pest of citrus crops in eastern Amazon
Provedor de dados: 82
Autores: Farias,Paulo R S; Harada,Ana Y; Silva,Anderson G; Monteiro,Bruno S; Rodrigues,Nara E L; Santos,Naira A.
Damage caused by the ant Azteca barbifex (Forel) was identified in orange trees (Citrus sinensis), in Capitão Poço County, Guamá microregion, Pará State. The damage caused by the scraping of stems and branches lead to reduction in yield with subsequent death of the plant. These characteristics indicate A. barbifex as a potential pest of citrus crops in the eastern region of Amazon.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ant; Citrus sinensis; Monoculture.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000600035

Microclimate and development of 'Conilon' coffee intercropped with rubber trees
Provedor de dados: 86
Autores: Partelli,Fábio Luiz; Araújo,André Vasconcellos; Vieira,Henrique Duarte; Dias,Jairo Rafael Machado; Menezes,Luis Fernando Tavares de; Ramalho,José Cochicho.
The objective of this work was to evaluate the influence of intercropping 'Conilon' coffee (Coffea canephora) with rubber trees on coffee tree microclimate, nutrition, growth, and yield. Rubber trees were planted in two double rows 33 m apart, with 4x2.3 m spacing between plants. Treatments consisted of the distances from the coffee plants to the rubber trees: 3, 6, 9, 12, and 15 m. Measurements of atmospheric variables (temperature, irradiance, and relative humidity), leaf nutrient concentration, internode length of plagiotropic and orthotropic branches, individual leaf area, chlorophyll content, and yield were performed. Intercropping promotes changes in the microclimatic conditions of coffee plants close to rubber trees, with reduction of temperature...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffea canéfora; Hevea brasiliensis; Irradiance; Monoculture; Shading.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2014001100872

Soil physical properties and sugarcane root growth in a red oxiso
Provedor de dados: 90
Autores: Baquero,José Euripides; Ralisch,Ricardo; Medina,Cristiane de Conti; Tavares Filho,João; Guimarães,Maria de Fátima.
Sugarcane, which involves the use of agricultural machinery in all crop stages, from soil preparation to harvest, is currently one of the most relevant crops for agribusiness in Brazil. The purpose of this study was to investigate soil physical properties and root growth in a eutroferric red Oxisol (Latossolo Vermelho eutroférrico) after different periods under sugarcane. The study was carried out in a cane plantation in Rolândia, Paraná State, where treatments consisted of a number of cuts (1, 3, 8, 10 and 16), harvested as green and burned sugarcane, at which soil bulk density, macro and microporosity, penetration resistance, as well as root length, density and area were determined. Results showed that sugarcane management practices lead to alterations...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saccharum spp; Compaction; Monoculture.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000100007

Microclimate, development and productivity of robusta coffee shaded by rubber trees and at full sun
Provedor de dados: 124
Autores: Araújo,André Vasconcellos; Partelli,Fábio Luiz; Oliosi,Gleison; Pezzopane,José Ricardo Macedo.
ABSTRACT There are few studies about the shading of Robusta coffee with rubber trees. The aim of this study was evaluate the microclimate, development and yield of Coffea canephora grown at full sun and shaded by rubber trees. The experiment consisted of a Robusta coffee crop (Coffea canephora) grown at under full sun and another coffee crop intercropped with rubber trees (Hevea brasiliensis). The rubber trees and coffee crop were planted in the East/West direction, in Jaguaré, Espírito Santo, Brazil. Was evaluated the luminosity, temperature and relative humidity, leaf nutrient concentrations; internodes of the plagiotropic and orthotropic branches, leaf area; relative chlorophyll index, and tree yield of the coffee crops. The shading directly influenced...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffea canephora; Hevea brasiliens; Shading; Intercropping; Monoculture.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902016000400700

Successive cultivation of maize and agricultural practices on root colonization, number of spores and species of arbuscular mycorrhizal fungi
Provedor de dados: 58
Autores: Carrenho,Rosilaine; Silva,Eraldo Schunk; Trufem,Sandra Farto Botelho; Bononi,Vera Lucia Ramos.
A large number of propagules and a broad spectrum of species are two important components of ecosystem (including agroecosystem) sustainability. Previous studies carried out in temperate areas showed that repeated monoculture leads to a decrease in the species abundance of arbuscular mycorrhizal fungi (AMF). This study evaluated the influence of maize monoculture and its agricultural practices on AMF during three consecutive cropping years in a Brazilian field. At the end of each cycle, soil and root samples were evaluated for species composition, spore populations and root colonization by AMF. The AMF community present during this period was scored according to the Spearman rank correlation and Principal Components Analysis. The mean percent root...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Monoculture; Maize; Mycorrhiza; Diversity of species.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822001000400002