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| Registros recuperados: 47 | |
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| Alves,Pablo F. S.; Santos,Silvânio R.; Kondo,Marcos K.; Pegoraro,Rodinei F.; Araújo,Edcássio D.. |
| ABSTRACT The feasibility of using sewage wastewater as a water and nutrient source for plants is an alternative to harness agricultural natural resource, observing its influence on the organic matter dynamics and soil energy. Our objective here was to evaluate the effects of applying different doses of effluent from a sewage treatment plant, in Janaúba – MG, Brazil, over the physical attributes of a soil grown with “Prata Anã” banana. From soil sample collection at depths of 0-20, 20-40, and 40-60 cm, we determined the following soil properties: soil density, total porosity, macroporosity, microporosity, organic matter, clay dispersed in water and stability of soil aggregate. The experimental design was in randomized blocks with four repetitions.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Musa spp; Agricultural reuse of effluents; Environmental sanitation; Semi-arid. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162015000600998 |
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| Bassoi,Luís Henrique; Flori,José Egídio; Silva,Emanuel Elder G. da; Silva,José Antonio M. e. |
| The water consumption, crop coefficient and effective rooting depth of the peach palm cultivated in a Vertisol were evaluated over two years and three months, from planting to fifth harvest, in Juazeiro, Bahia State, Brazil. Plants were irrigated by microsprinklers under two irrigation treatments, full irrigation (FI) and reduced irrigation (RI), and the amount of water applied in RI corresponded to 75% of that of FI. Water consumption and crop coefficient has increased markedly at the first harvest (7.3 mm day-1 and 1.2, respectively, in FI treatment) in the thirteenth month, as a consequence of plant canopy development. After that, plants were harvested every three or four months, and these values varied a little due to decrease of the stand. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bactris gasipaes Kunth; Semi-arid; Yield. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362003000400022 |
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| DRUMOND, M. A.; KIILL, L. H. P.; LIMA, P. C. F.; OLIVEIRA, M. C. de; OLIVEIRA, V. R. de; ALBUQUERQUE, S. G. de; NASCIMENTO, C. E. de S.; CAVALCANTI, J.. |
| O presente documento foi preparado com objeto de servir de base à discussão do tema ?Estratégias Para o Uso Sustentável da Biodiversidade da Caatinga?, que resultará no documento final do Seminário ?Biodiversidade da Caatinga?, a ser realizado em Petrolina; Pernambuco, na Embrapa Semi-Árido, no período de 21 a 26 de maio de 2000. Este Seminário, parte integrante do Projeto de Conservação e Utilização Sustentável da Diversidade Biológica Brasileira (PROBIO), é promovido pela Universidade Federal de Pernambuco-UFPE, Fundação Biodiversitas, Conservation International do Brasil, Embrapa Semi-Árido, Ministério do Meio Ambiente, Banco Mundial, CNPq, GEF, Secretaria de ciência de tecnologia e Meio Ambiente do Governo de Pernambuco e SUDENE. |
| Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E) |
Palavras-chave: Sustentabilidade; Potencial; Estrategia; Nordeste; Semi-arido; Sustainability; Potential; Strategy; Northeast; Semi-arid; Natural resource.; Recurso natural; Caatinga; Biodiversidade; Agricultura; Pecuária; Recurso Florestal; Tecnologia; Vegetação.; Agriculture; Biodiversity; Forest resources; Livestock; Technology; Vegetation.. |
| Ano: 2000 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/134000 |
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| Ali Abdullahi,Ibrahim; Al-Hassan Musa,Hassan; Jibril,Aliyu. |
| Reproductive tract of 12 camels (Camelus dromedarius) were used to evaluate testicular morphometry. The testicular morphometric characteristics measured were scrotal circumference (in situ), paired testis weight, epididymal weight and mean epididymal length, testis volume, and testis density. There were no significant difference (p >0.05) between the left and right organs, but there were numerical differences between all the parameters. A highly significant positive correlations (p <0.05, p <0.01, p <0.001) exist between the scrotal circumference, testicular and epididymal morphometry, except for testis density which is non- significant (p >0.05). It was concluded that testicular morphometry would provide reliable information in... |
| Tipo: Journal article |
Palavras-chave: Camels; Scrotal circumference; Testicular morphometry; Epididymis; Semi-arid. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022012000400019 |
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| Alves,W de F; Mota,AS; Lima,RAA de; Bellezoni,R; Vasconcellos,A. |
| The composition of termite assemblages was analyzed in three caatinga sites of the Estação Ecológica do Seridó, located in the municipality of Serra Negra do Norte, in the state of Rio Grande do Norte, Brazil. These sites have been subjected to selective logging, and cleared for pasture and farming. A standardized sampling protocol for termite assemblages (30h/person/site) was conducted between September 2007 and February 2009. At each site we measured environmental variables, such as soil pH and organic matter, necromass stock, vegetation height, stem diameter at ankle height (DAH) and the largest and the smallest crown width. Ten species of termites, belonging to eight genera and three families, were found at the three experimental sites. Four feeding... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Isoptera; Semi-arid; Feeding group; Abundance; Environmental variable. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2011000100006 |
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| Pedreira, Ernani Macedo; Cardoso, Carlos Estevao Leite; Guerreiro, Mariana Sampaio Silva; Almeida, Otavio Alvares De; Souza, Luiz Francisco Da Silva. |
| O abacaxizeiro é uma planta de clima tropical, que apresenta crescimento adequado em grande parte das condições climáticas encontradas no Brasil, sobretudo na Bahia. No entanto necessita de chuvas bem distribuídas para não prejudicar seu crescimento e/ou desenvolvimento e, conseqüentemente, a produção. Este trabalho objetiva avaliar a viabilidade financeira do sistema de produção da cultura do abacaxi irrigado, em condições de risco. A metodologia utilizada consistiu no levantamento de dados primários, referentes aos vetores de preços dos insumos e dos produtos. Com base na matriz de coeficientes técnicos realizou-se a análise de rentabilidade em condições determinística e em condições de risco, utilizando-se o método de simulação de Monte Carlo. A partir... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Viabilidade econômica; Simulação Monte Carlo; Semi-árido; Economic viability; Monte Carlo simulation; Semi-arid; Crop Production/Industries. |
| Ano: 2008 |
URL: http://purl.umn.edu/112695 |
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| Mukarumbwa, P.; Mushunje, Abbyssinia. |
| Successive droughts, in Zimbabwe compounded by other economic shocks in recent years have resulted in decreased maize productivity amongst the communal farmers most of whom reside in regions IV and V which are considered semi-arid. This has given rise to the need to find alternative food crops, which may be suitable for these areas. Generally, research in the world indicates that sorghum and millet have the potential to end chronic food insecurity in semi-arid areas because of their drought tolerance. Whilst this might be the case, research, government policy and assistance from non-governmental organizations on food crop production in Zimbabwe have shown a continual inclination to maize production in semi-arid areas. However, maize is regarded as a high... |
| Tipo: Journal Article |
Palavras-chave: Semi-arid; Sorghum; Finger millet; Small grains; Food security; Crop Production/Industries. |
| Ano: 2010 |
URL: http://purl.umn.edu/96430 |
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| Machado, Gustavo Bittencourt. |
| Este artigo tem o objetivo de discutir o tema do desenvolvimento do semi-árido, particularmente, o do Estado da Bahia, a partir das demandas específicas dos territórios de identidade, e em temas como ciência e tecnologia, e colocar, como condição deste processo, as estratégias dos empreendimentos econômicos solidários, que constituem o tecido social do meio rural e do semi-árido do Nordeste do Brasil. Os resultados baseiam-se em pesquisas realizadas no estado da Bahia, mas que, necessariamente, reportam-se aos demais sertões semi-áridos brasileiros. Ao final, propõem-se algumas diretrizes de políticas de ciência e tecnologia que contemplem as perspectivas dos territórios de identidade e dos empreendimentos econômicos solidários.... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Semi-árido; Políticas públicas; Desenvolvimento; Territórios de identidade; Semi-arid; Public policies; Development; Identity territories; International Development. |
| Ano: 2008 |
URL: http://purl.umn.edu/109653 |
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| Moraes,Gislane M. de; Xavier,Francisco Alisson da Silva; Mendonça,Eduardo de Sá; Araújo Filho,João Ambrósio de; Oliveira,Teógenes Senna de. |
| Studies have proven that the agroforestry systems in the semi-arid region of the State of Ceará, Brazil, induce an increase in soil organic C levels. Notwithstanding, there is no information if this increase also results in qualitative changes in different pools of soil organic matter. The objective of this study was to verify the possible chemical and structural alterations in fulvic and humic acids of a Luvisol in areas adopting agroforestry, traditional intensive cultivation and native forest in a long-term experiment conducted in the semi-arid region of Ceará State, Brazil. The study was conducted in an experimental area of the National Goat Research Center (Embrapa) in Sobral, CE. The following treatments were evaluated: agrosilvopasture (AGP),... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Semi-arid; Silvopasture; Agrosilvopasture; Spectroscopy. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000500014 |
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| Fernandes-Júnior,Paulo Ivan; Aidar,Saulo de Tarso; Morgante,Carolina Vianna; Gava,Carlos Alberto Tuão; Zilli,Jerri Édson; Souza,Layane Silva Barbosa de; Marinho,Rita de Cássia Nunes; Nóbrega,Rafaela Simão Abrahão; Brasil,Marivaine da Silva; Seido,Sirando Lima; Martins,Lindete Míria Vieira. |
| Plant species that naturally occur in the Brazilian Caatinga(xeric shrubland) adapt in several ways to these harsh conditions, and that can be exploited to increase crop production. Among the strategic adaptations to confront low water availability, desiccation tolerance stands out. Up to now, the association of those species with beneficial soil microorganisms is not well understood. The aim of this study was to characterize Tripogon spicatusdiazotrophic bacterial isolates from the Caatingabiome and evaluate their ability to promote plant growth in rice. Sixteen bacterial isolates were studied in regard to their taxonomic position by partial sequencing of the 16S rRNA gene, putative diazotrophic capacity, in vitro indole-acetic acid (IAA) production and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biological nitrogen fixation; Inoculant; Diazotrophic bacteria; Semi-arid; Desiccation tolerant plants. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000400993 |
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| Maranhão,Samuel R.; Pompeu,Roberto C. F. F.; Souza,Henrique A. de; Araújo,Ricardo A. de; Fontinele,Renato G.; Cândido,Magno J. D.. |
| ABSTRACT The lack of information on the growth of forage grasses in semi-arid environment, especially from the perspective of irrigation, is one of the obstacles to regular forage supply, as well as to the rational use of irrigation water. The objective with this study was to evaluate the leaf gas exchanges, biomass flow and structural characteristics of buffel grass cultivar Gayndah under different water supplies (30, 60, 90 and 120% of the reference evapotranspiration - ETo) during the dry season and dry-rainy season, in completely randomized design in a split-plot scheme with three repetitions. The experiment was conducted in Sobral, CE, Brazil (3° 45’ 00.77” S and 40° 20’ 38.55” W, altitude of 101 m) from September 2015 to January 2016. A higher... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pennisetum ciliare; Biomass flow; Irrigation depths; Semi-arid; Gas exchanges. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000800566 |
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| Guimarães,Miguel J. M.; Simões,Welson L.; Oliveira,Anderson R. de; Araujo,Gherman G. L. de; Silva,Ênio F. de F. e; Willadino,Lilia G.. |
| ABSTRACT The objective of this study was to identify sorghum varieties that have growth and grain yield potential under saline conditions. The study was conducted in 2016 at a greenhouse of the Embrapa Semiárido, in Petrolina, state of Pernambuco, Brazil (9° 8’ 8.9’’ S, 40° 18’ 33.6’’ W, and altitude of 373 m). A randomized block experimental design, with a 6 × 5 factorial arrangement, and three replications was used. The treatments consisted of six grain sorghum varieties (1011-IPA, 2502-IPA, 2564-IPA, 2600-IPA, Ponta Negra, and Qualimax), and five salinity levels of the irrigation water (ECw = 0, 1.5, 3.0, 6.0, and 12.0 dS m-1). Plant height, stem diameter, dry matter yield, width and length of the +3 leaf, total leaf area, water use efficiency, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Salinity; Sorghum bicolor L.; Semi-arid. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000400285 |
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| Ribeiro Filho,Jacques C.; Lemos Filho,Luis C. de A.; Santos,Julio C. N. dos; Brasil,José B.; Palácio,Helba A. de Q.. |
| ABSTRACT Information on hydrology, and vegetation distribution is essential for the development of techniques and strategies to cope with droughts in semi-arid environments. The objective of this study was to evaluate the partitioning of gross rainfall into throughfall, stemflow, and interception loss in the Brazilian Northeastern Atlantic Forest, and its correlations with rainfall characteristics. The study was conducted in the Bica watershed, in Portalegre, state of Rio Grande do Norte, Brazil. The work was carried out in 2017, with monitoring of the throughfall, stemflow, and interception loss in an area of 10 × 20 m. Total rainfall depths (TRD) and wind speed were measured, and the evapotranspiration (ET0) was estimated. Based on this information,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Caatinga; Hydrology; Semi-arid; Principal component analysis. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000100021 |
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| Bassoi,Luís Henrique; Silva,José Antonio Moura e; Silva,Emanuel Elder Gomes da; Ramos,Clovis Manoel Carvalho; Sediyama,Gilberto Chohaku. |
| In order to establish guidelines for irrigation water management of banana cv. Pacovan (AAB group, Prata sub-group) in Petrolina County, northeastern Brazil, the root distribution and activity were measured on an irrigated plantation, in a medium texture soil, with plants spaced in a 3 x 3 m grid. Root distribution was evaluated by the soil profile method aided by digital image analysis, while root activity was indirectly determined by the changing of soil water content and by the direction of soil water flux. Data were collected since planting in January 1999 to the 3rd harvest in September 2001. Effective rooting depth increased from 0.4 m at 91 days after planting (dap), to 0.6 m at 370, 510, and 903 dap, while water absorption by roots was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Musa spp; Semi-arid; Microsprinkle. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452004000300021 |
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| Bassoi,Luís Henrique; Teixeira,Antonio Heriberto de Castro; Lima Filho,José Moacir Pinheiro; Silva,José Antonio Moura e; Silva,Emanuel Elder Gomes da; Ramos,Clovis Manoel Carvalho; Sediyama,Gilberto Chohaku. |
| The water consumption and the crop coefficient of the banana cv. Pacovan were estimated in Petrolina County, northeastern Brazil, in order to establish guidelines to irrigation water management. Evaluations were carried out since planting in January 1999 to the 3rd harvest in September 2001 on a microsprinkler irrigated orchard, with plants spaced in a 3 x 3 m grid. Average daily water consumption was 3.9, 4.0, and 3.3 mm in the 1st, 2nd and 3rd growing seasons, respectively. Crop coefficient values increased from 0.7 (vegetative growth) to 1.1 (flowering). Even with high soil water availability, transpiration was reduced due to high evaporative demand. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Musa spp; Semi-arid; Kc. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452004000300022 |
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| Registros recuperados: 47 | |
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