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| Registros recuperados: 18 | |
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| RAMOS, A. D.; BLEICHER, E.; FREIRE, F. das C. O.; CARDOSO, J. E.; PARENTE, J. I. G.; BARROS, L. de M.; CRISOSTOMO, L. A.; FROTA, P. C. E.; CORRÊA, M. P. F.; PESSOA, P. F. A. P.; MELO, Q. M. S.; OLIVEIRA, V. H. de. |
| Clima. Solos. Variedades. Propagacao. Formacao de mudas. Plantio. Poda. Irrigacao. Pragas. Doencas. Colheita, armazenamento e comercializacao. Coeficientes tecnicos. |
| Tipo: Col Criar Plantar ABC 500P/500R Saber (INFOTECA-E) |
Palavras-chave: Cashews; Cultivation; Mobility; Cultivo.; Clima; Solo; Praga; Doença; Climate; Pests; Soil.. |
| Ano: 1996 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/111488 |
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| SILVA,K.S.; FREITAS,F.C.L.; BRAGA,D.F.; DOMBROSKI,J.L.D.; SANTOS,A.F.B.. |
| ABSTRACT Ametryn is one of the most widely used herbicides in the sugarcane culture. Little is known about the interactions between this herbicide and the attributes of soils in the sugarcane region of northeastern Brazil. This knowledge, before recommending herbicide, will minimize the negative effects on the environment, particularly on water resources, and will ensure weed control efficacy. In this work, ametryn leaching potential was estimated through bioassays and chromatography, in five soils from the sugarcane region in northeastern Brazil: Quartzarenic Neosol (Entisol); Red Argisol (Ultisol); Ferrihumiluvic Spodosol (Spodosols); Red-Yellow Acrisol (Oxisol) and Haplic Cambisol (Inceptisols). To achieve this, columns were prepared with samples of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Herbicide; Liquid chromatography; Bioassay; Mobility. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000400839 |
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| BurnSilver, Shauna; Mwangi, Esther. |
| This paper leverages datasets and results from two separate studies carried out across eight Kajiado group ranches and offers a unique opportunity to look at emergent pre- and post-subdivision trends from an interdisciplinary framework that combines ecological, political, and human-ecological research perspectives. It provides insights into the following issues: the loss of flexibility and mobility for Maasai herders’ dues to subdivision, the nature of collective activities that individuals pursue after subdivision, and the emergence of pasture sharing arrangements. NDVI profiles show that forage options for individual herders decrease dramatically under privatization, but rebound somewhat when parcels are shared between households located adjacent to each... |
| Tipo: Journal Article |
Palavras-chave: Kajiado; Mobility; Flexibility; Pastoralism; Collective Action; Subdivision; Group Ranches; Livestock Production/Industries. |
| Ano: 2007 |
URL: http://purl.umn.edu/47825 |
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| Bogiani,Júlio César; Rosolem,Ciro Antônio. |
| The mobility of boron (B), a commonly deficient micronutrient in cotton, has been shown to be low in the plant phloem. Nevertheless, studies have indicated that cotton cultivars can respond differently to B application. A greenhouse experiment was conducted to compare B absorption and mobility in cotton cultivars grown in nutrient solution. Treatments consisted of three cotton cultivars (FMT 701, DP 604BG and FMX 993), and five B rates (0.0, 2.5, 5.0, 10.0, and 20.0 µmol L-1). Plant growth and development were monitored for four weeks from the appearance of the first square. The time of onset and severity of B deficiency symptoms varied among cotton cultivars. Initial B uptake of cv. DP 604BG was lower than of the other cultivars, but a greater amount of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Variety; Micronutrient; Mobility; Remobilization. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000500014 |
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| Gonçalves,Luísa Carneiro Vasconcelos Basto; Simões,Ana Daniela Gomes Araújo; Millis,Darryl Lynn; Matos,Augusto José Ferreira de. |
| ABSTRACT: The purpose of this study was to develop and to assess the psychometric characteristics of a mobility scale for dogs. The original ten questions were reduced using validation process. One hundred and twenty three dog owners were invited to answer the questionnaire. Internal consistency, factor analysis, floor and ceiling effect and construct validity were studied. Good internal consistency (Cronbach's Alpha=0.854) was determined with two items eliminated. The instrument comprises 8 final questions, each of which has five possible answers (never, rarely, sometimes, often and always) scored between 0 and 4 or between 4 and 0 (for the items with inverse score). Three hypotheses proposed for the construct validity were verified: 1) gender does not... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Canine; Mobility; Psychometric methodology; Questionnaire; Validation. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016001202210 |
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| Fousekis, Panos; Lazaridis, Panagiotis. |
| This paper investigates the law of motion for the cross-section distribution of dietary energy supply (DES) in the world. This has been pursued using the distribution approach and a panel of 152 countries for the period 1961-2001. According to the empirical results, persistence in caloric intakes dominates in the short-run. With time, however, upwards mobility gains momentum and the world is moving towards a long-run distribution, which is strongly skewed to the left. The estimated expected first passage times from extreme under-supply to higher intake levels are consistent with speculations that most of the developing countries will attain the 3000 kcal per person per day level by the year 2030. |
| Tipo: Journal Article |
Palavras-chave: Caloric intakes; Mobility; World; Food Consumption/Nutrition/Food Safety; C10; D12. |
| Ano: 2005 |
URL: http://purl.umn.edu/44097 |
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| TAKESHITA,V.; MENDES,K.F.; ALONSO,F.G.; TORNISIELO,V.L.. |
| ABSTRACT: With extensive use of herbicides in agricultural areas, the risk of contamination of groundwater and surface water by these products has become a worldwide concern. Practices of application or maintenance of soil organic residues that have begun to be used in agriculture for soil nutrition have demonstrated other benefits besides nutrient supplementation, such as reduced mobility and increased soil degradation of herbicides. Because it is the final destination of herbicides, soil and its constituents, especially organic matter in tropical soils, play a prominent role in processes that encompass the dynamics of herbicide molecules. In this context, it is necessary to know the influence of the organic matter and its constituents on the behavior of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sorption; Mobility; Biodegradation; Organic carbon. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100304 |
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| Liu, Zhenxia; Berne, Serge; Saito, Yoshiki; Yu, Hua; Trentesaux, Alain; Uehara, Katsuto; Yin, Ping; Liu, J. Paul; Li, Chaoxing; Hu, Guanghai; Wang, Xiangqin. |
| On the basis of bathymetric and seismic data and data from piston cores collected by the Chinese-French marine geology and geophysics investigation of 1996, we discuss the internal architecture and mobility of tidal sand ridges in the East China Sea (ECS). We characterized the sand ridges on the middle to outer shelf of the ECS as tide-dominated sand ridges with southwest dipping beds, indicating that the regional net sediment transport is toward the southwest. As the sand ridges gradually migrate toward the southwest, new sand ridges are continually replacing old ones, and several generations of sand ridges have developed in the study area. High-resolution seismic data, acoustic Doppler current profiler data, and two C-14-dated piston cores, DGKS9614... |
| Tipo: Text |
Palavras-chave: Transgression; Ridge evolution; East China Sea; Mobility; Internal architecture; Tidal sand ridge. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-3309.pdf |
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| GUIMARÃES,A.C.D.; MENDES,K.F.; CAMPION,T.F.; CHRISTOFFOLETI,P.J.; TORNISIELO,V.L.. |
| ABSTRACT: Leaching intensity depends on the physicochemical properties of soils and herbicides. Consequently, a good understanding of this process is essential to determine mitigation measures to reduce or eliminate the risk of water contamination around areas with sugarcane crops. Therefore, the objective of this study was to analyze the leaching of ametryn, diuron, hexazinone, and metribuzin by using columns in five soils with different physicochemical properties cultivated with sugarcane. The radiolabeled herbicides with 14C were evaluated at six soil depths (0-0.05, 0.05-0.10, 0.10-0.15, 0.15-0.20, 0.20-0.25, and 0.25-0.30 m) and in the leachate after 200 mm rainfall simulation for 48 h. Herbicide leaching was mostly affected by soil type. Ametryn and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil behavior; Pre-emergent; Leachate; Mobility. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100228 |
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| BRAGA,D.F.; FREITAS,F.C.L.; ROCHA,P.R.R.; ARAÚJO,A.G.D.; MELO,V.C.. |
| Sulfentrazone leaching potential is dependent on soil properties such as strength and type of clay, organic matter content and pH, and may result in ineffectiveness of the product and contamination of groundwater. The objective of this study was to evaluate sulfentrazone leaching in five soils of the sugarcane region in the Northeast Region of Brazil, with different physical and chemical properties, by means of bioassay and high-performance liquid chromatography (HPLC) resolution. The experiment was conducted in a split plot in a completely randomized design. The plots had PVC columns with a 10 cm diameter and being 50 cm deep, filled with five different soil classes (quartzarenic neosol, haplic cambisol, yellowish-red latosol, yellowish-red acrisol, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Herbicide; Bioassay; Sorption; Mobility. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000100161 |
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| Inoue, Miriam Hiroko; UNEMAT; Oliveira Júnior, Rubem Silverio de; UEM; Constantin, Jamil; UEM; Alonso, Diego Gonçalves; UEM; Santana, Diogo Carneiro de; UNEMAT. |
| Objetivou-se estudar a lixiviação do diuron em colunas de solo, além do efeito de métodos de redução da atividade microbiana na degradação deste herbicida em amostras de LATOSSOLO VERMELHO Distrófico (LVd – textura franco-arenosa) e LATOSSOLO VERMELHO Distroférrico (LRd – textura argilosa). Para avaliar a movimentação do diuron (0; 1,6 e 3,2 kg há-1), foram aplicadas lâminas de 0, 20, 40, 60 e 80 mm de água. Na degradação, os métodos de restrição empregados foram: autoclavagem prévia, aplicação de brometo de metila, amoxicilina, captan e amoxicilina+captan, sendo que as amostras foram mantidas na ausência ou presença de luz. Resultados indicam que lâminas superiores a 60 mm foram suficientes para promover movimentação nítida nas amostras de LVd. Para o... |
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Palavras-chave: 5.01.02.00-1 Fitossanidade efeito residual; Mobilidade; Persistência; Retenção residual effect; Mobility; Persistence; Retention.. |
| Ano: 2008 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5963 |
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| Ueyama, Mika. |
| A tremendous increase in the number of orphans associated with a sharp rise in prime-age adult mortality due to AIDS has become a serious problem in Sub-Saharan Africa. In fact, more than 30 percent of school-aged children have lost at least one parent in Malawi. Lack of investments in human capital and adverse conditions during childhood are often associated with lower living standards in the future. Therefore, if orphans face an increased risk of poverty, exploitation, malnutrition, and poorer access to health care and schooling, early intervention is critical so as to avoid the potential poverty trap. The purpose of this study is to investigate the impacts of orphanhood/parental death on children’s mortality risks, migration behaviors, and schooling... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Orphan; Mortality; Mobility; School enrollment; Grade progression; HIV/AIDS; Sample attrition; Malawi; Labor and Human Capital. |
| Ano: 2007 |
URL: http://purl.umn.edu/42403 |
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| Guerra, Naiara; Universidade Estadual de Maringá-UEM; Oliveira Júnior, Rubem Silvério de; Universidade Estadual de Maringá - UEM; Constantin, Jamil; Universidade Estadual de Maringá - UEM; Oliveira Neto, Antonio Mendes de; Universidade Estadual de Maringá - UEM; Dan, Hugo de Almeida; Universidade Estadual de Maringá - UEM; Braz, Guilherme Braga Pereira; Universidade Estadual de Maringá - UEM. |
| Scarce research has been published concerning the effect of soil pH on the leaching potential of herbicides in tropical soils. Thus, we designed this study to evaluate the influence of soil liming on the leaching of trifloxysulfuron-sodium and pyrithiobac-sodium after simulated rainfall depths in soil columns. In the study, two trials were conducted simultaneously; the first experiment evaluated trifloxysulfuron-sodium (7.5 g ha-1), while the second experiment evaluated pyrithiobac-sodium (70 g ha-1). Both experiments were conducted in a randomized block design with a 2 x 4 x 5 factorial scheme and four replications. The design’s factors corresponded to 2 soil liming conditions (with or without liming), 4 simulated rainfall depths (0, 15, 30, and 45 mm)... |
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Palavras-chave: ALS inhibitors; Mobility; Soil pH; Tropical soils. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16349 |
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| Mobility is a millenary human strategy to deal with environmental change. An outstanding example of mobility is transhumance, an ancient pastoralist practice consisting of the seasonal migration of livestock between ecological regions following peaks in pasture productivity. The maintenance of transhumance depends partly on the preservation of related traditional ecological knowledge (TEK). We (a) identified and characterized social groups that hold transhumance-related TEK, (b) analyzed trends in transhumance-related TEK across generations and social groups, (c) examined the factors that influence variation in levels of TEK, and (d) analyzed elements of transhumance-related TEK as examples of adaptive strategies to cope with global change. We used... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Adaptive strategy; Drove road; Environmental change; Mobility; Pastoralism; Resilience. |
| Ano: 2013 |
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| Boone, Randall B; Natural Resource Ecology Laboratory and the Department of Forestry, Rangeland, and Watershed Stewardship, Colorado State University; rboone@nrel.colostate.edu; Galvin, Kathleen A; Department of Anthropology and the Natural Resource Ecology Laboratory, Colorado State University; kathy@nrel.colostate.edu; BurnSilver, Shauna B; Agricultural and Forestry Experiment Station, University of Alaska; sbburnsilver@alaska.edu; Thornton, Philip K; International Livestock Research Institute; University of Edinburgh; P.Thornton@cgiar.org; Ojima, Dennis S; Natural Resource Ecology Laboratory and the Department of Forestry, Rangeland, and Watershed Stewardship, Colorado State University; dennis@nrel.colostate.edu; Jawson, Jacob R; Department of Forestry, Rangeland, and Watershed Stewardship, Colorado State University; jjawson@emailisgood.com. |
| Historically, pastoral people were able to more freely use the services their semi-arid and arid ecosystems provide, and they adapted to changes in ways that improved their well-being. More recently, their ability to adapt has been constrained due to changes from within and from outside their communities. To compare possible responses by pastoral communities, we modeled ecosystem services and tied those services to decisions that people make at the household level. We created an agent-based household model called DECUMA, joined that model with the ecosystem model SAVANNA, and applied the linked models to southeastern Kajiado District, Kenya. The structure of the new agent-based model and linkages between the models are described, and then we demonstrate... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Agent-based modeling; DECUMA household model; Ecosystem services; Livestock; Maasai; Mobility; Pastoral decision making; SAVANNA ecosystem model. |
| Ano: 2011 |
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| Registros recuperados: 18 | |
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