03.1 - Graduação (UAST)
URI permanente desta comunidadehttps://arandu.ufrpe.br/handle/123456789/2926
Navegar
8 resultados
Resultados da Pesquisa
Item Crescimento econômico e recursos naturais: um estudo dos municípios de Pernambuco(2019) Sá, Álvaro Robério de Souza; Lima, Sergiany da Silva; http://lattes.cnpq.br/5314745114599013; http://lattes.cnpq.br/9444367216262237This paperanalyzes the effect of natural resourceson the municipal and regional aggregateproduction of the State of Pernambuco between 2000 and 2010. For thispurpose, data fromofficial agencies such as IBGE, IPEAData, BDE, RAIS, STN and APAC wereusedtoestimate The effect of agriculture and waterresourceson the per capita output of municipalitiesthrough a modeling of Solow's economic growth theory with human capital and natural resources. The estimationmethodwas the multiple linear regressionwithbalancedpanel data. Dueto the longitudinal data of Pernambuco municipalities, weused the fixedeffect and and omeffectestimatorcontrolledby regional dummies to capture the importance of natural resources in the per capita production of the mesoregions of the state, especially the PernambucanSemi-arid. The resultsobtained are consistentwith the theory of economicgrowthwith natural resources, and indicatethatagriculture and waterresourceshaveanimportanteffecton municipal and regional aggregateproduction in the state of Pernambuco. It wasalsoobservedthat the per capita aggregateproduction of the Pernambucano Semi-aridmesoregions are onaveragelowerthan the Recife Metropolitan Region (RMR), except for the Sertão do São Francisco. Finally, it wasconcludedthatalong with human capital, natural resources play a relevant role in the state'seconomicprogress, especiallyconsidering the extent of arid and semi-aridlands, as well as the climatic and geographicalconditionsthataffect 75% of the state territory.Item Favaliação da atividade alelopática do extrato aquoso de Senna siamea (Lam.) H.S. Irwin & Barneby sobre o desenvolvimento de plântulas de Lactuca sativa l.(2019) Medeiros, Luanna Torres de; Saraiva, Rogério de Aquino; http://lattes.cnpq.br/6812072552819682; http://lattes.cnpq.br/8680775638977616Allelopathy is understood as a process that occurs in plant communities, where species act through mechanisms capable of interfering with the growth and development of other plants, through the release of chemicals, also called allelochemicals, which are derived from processes that cause they occur naturally in their secondary metabolism and subsequently deposited on the substrate. These allelochemicals may perform harmful or advantageous actions when in contact with other plants present in the same environment, depending on the amount and circumstances in which they are in place. Senna siamea (Lam) H.S. Irwin & Barneby, popularly known as canafistula or cassia-siam is originally from Thailand, but widely found in the Brazilian semiarid region, which has abundant application in landscape use, shading and various ethnopharmacological research. Considering the large dispersal of S. siamea species throughout the Brazilian Northeast, we aimed to evaluate its allelopathic activity on the development of Lactuca sativa (lettuce) seedlings. For this, 25 L. sativa seeds were placed in Petri dishes, and at the same time different concentrations (0, 25, 50, 75 and 100) of the aqueous extract of Senna siamea leaves were added, followed by The seeded plates wererelocated to a germination chamber where they remained for seven days under daily monitoring. The analyzes were performed through measurements of seedling root and hypocotyls and phytotoxicity bioassays and phytochemical tests, from which the presence of secondary metabolites classes such as flavonoids and phenolic compounds were detected. From this, an inhibitory effect was observed in relation to lettuce seedlings, which was observed by observing the root and hypocotyl length, decrease of vigor, presence of necrosis and reduction of chlorophyll and carotenoid content. Based on the knowledge obtained, it is possible to evidence that this plant species has relevant potential as a source of chemical compounds with significant biotechnological properties in the production of natural herbicides for less aggressive use against the weeds, besides the search for more information for proper use of plant species that have allelopathic potential.Item Desempenho de espécies vegetais conduzidas em sistemas agroflorestais e irrigadas com água cinza na Região do Sertão do Pajeú(2019) Silva, Hugo Felipe da; Barros Júnior, Genival; http://lattes.cnpq.br/4379675294862211; http://lattes.cnpq.br/6296491328478393The increasing demand for water in the Brazilian semiarid region has led farmers to seek local solutions to increase the supply of this important input to crops that feed their families and herds. This has already driven small-scale wastewater use in many communities or sites in the region. In this perspective the present work aimed to analyze the performance of fruit and forage plants conducted in Agroforestry Systems, under drip irrigation condition with filtered gray water and rainfed regime under semiarid climate conditions in Sertão do Pajeú, in the municipalities of Flores and Triunfo, in Pernambuco, Brazil. The plant evaluation period was from September 2018 to January 2019, in which the morphometric characteristics of the orange (Citrus sp.), Mango (Mangifera indica L.), soursop (Annona muricata L.), and gliricidia (Gliricidia sepium (Jacq.) Kunthex Walp.), as well as forage palm clones Mexican Elephant Ear (OEM) (Opuntia stricta var. IPA-200016 (Haw.) Haw.) IPA Sertânia (IS) and Doce Young (DM) of the species (Nopalea cochenillifera (L.) Salm-Dyck) of the varieties IPA-200205 and IPA-100004, respectively. Stem diameter (DC) and plant height (AP) were evaluated, and for palm clones it was evaluated beyond plant height (AP), plant width (LP), the number of cladodes per plant (NCP). first, second and third order, as well as the determination of the leaf area (AC) calculation through mathematical models; In addition to these parameters, the survival rate and growth rate of these plant species were determined. The use of gray water positively influenced the performance of plants when compared to those conducted under rainfed regime, obtaining superior results, both in growth and in plant survival, in the cultivated molds of the Agroforestry Systems conducted. by farming families. This shows that filtered gray water can be reused, especially in periods of water scarcity, reducing the level of environmental contamination and improving the performance of Agroforestry Systems in the semiarid region, becoming another resource to improve the quality of life of rural households of this region.Item Manejo e caracterização de acessos e variedades de videira nas condições do Vale do São Francisco(2019) Sobral, Yuri Rafael Alves; Ataíde, Elma Machado; http://lattes.cnpq.br/2422663252620574; http://lattes.cnpq.br/2741550066670500Item Acompanhamento das atividades de assistência técnica e extensão rural no IPA - Serra Talhada(2019) Oliveira, Cibely Ferreira de; Simplício, Josimar Bento; http://lattes.cnpq.br/1876691945804390; http://lattes.cnpq.br/2451690212011839Item Análise espaço-temporal da precipitação pluviométrica por Índice de Anomalia de Chuva (IAC) no Sertão de Pernambuco(2019) Costa, Sidney Anderson Teixeira da; Bezerra, Alan Cezar; http://lattes.cnpq.br/3690303625468223; http://lattes.cnpq.br/3437135530105879Extreme weather events assume great social and economic relevance, especially in the semiarid regions. The analysis of the rainfall regime of a given region can be done by the Rain Anomaly Index (IAC), which allows understanding and classifying the rainfall regime as to the severity of dry and rainy cycles. The objective of this study was to study the spatio-temporal variability of precipitation in the Sertão de Pernambuco, using the Rain Anomaly Index (IAC) for the climatological normal (1987-2017). For this, rainfall data were obtained from the municipalities of Afogados da Ingazeira, Araripina, Arcoverde, Cedro, Flores, Inajá, Ipubi, Mirandiba, Serra Talhada, Serrita and Sertânia. Annual and interannual precipitation analyzes were performed, negative and positive anomalies were determined throughout the climatological normal and precipitation spatial distribution maps were elaborated in the different annual classifications based on the IAC. The results reveal that in ten of the eleven municipalities studied the rainy season corresponds to the months from January to April. It was found that the years 1993, 1998 and 2012 were the driest in the series, while 1988, 2004 and 2009 were the driest. The number of negative anomalies in the analyzed period was 54.8%, thus showing greater numbers of dry than wet years. It was also found that the Sertão mesoregion has a certain degree of homogeneity in relation to extreme events, i.e., rainy or dry years, when they occur, tend to affect most of the territory. In this work, it was shown that the IAC can be used as a tool to assist climate monitoring and rainfall variability of a given region.Item Da terra seca nasce vida áspera: o caso dos agricultores de Santa Cruz da Baixa Verde (PE) nas frentes de emergência nas décadas de 1980 e 1990(2019) Sousa, Genicélio Cordeiro de; Torres, Avaní Terezinha Gonçalves; http://lattes.cnpq.br/6894754635156771; http://lattes.cnpq.br/5539735955554521In the northeastern Semiarid one of the major concerns for the Regional Economy are the long consecutive years of droughts and droughts. The phenomenon of droughts in the Northeast has resulted in a large mass of emigrants to other regions that have not been affected by long periods of drought and water scarcity, particularly in the North and Southeast regions, significantly increasing the number of called "drought flagellated". It is common objective to report how the Emergency Fronts occurred in the Brazilian Northeast and in particular in the municipality of Santa Cruz da Baixa Verde - PE, in the 1980s and 1990s. The specific objectives are: to analyze the ways of obtaining family income in the Period of the Emergency Fronts (EF), their importance of those for the local economy; report the main problems and difficulties encountered to enlist in (EF) from the point of view of workers from their oral memory; of the daily life of drought scourges by historiográfic review; point out which are the main government programs aimed at rural producers who contributed to killing hunger and thirst in prolonged drought periods. For this, bibliographic surveys of the characteristics of the northeastern Semiarid were carried out, its form of settlement, the edaphoclimatic characteristics by which the northeastern Semiarid has lived with the great periods of and droughts, droughts and irregular rains. In the reports, it was also noticed the difference between the work carried out by men and women in (EF), also analyzing the role of the farmer man and the farmer woman in the midst of prolonged drought conditions. In the statements the interviewees point out the difficulties for enlistment , since bureaucracy as to the amount of people who could be listed , errors in the listling data as well as the programs that succeeded . The reports point to rough life in the daily life of the Emergency Fronts, becoming notorious the need of the population for more government benefits aimed at (com)experiences with drought contributing to the permanence of man in the field.Item Desempenho agronômico de clones de palma forrageira em consórcio com pornunça(2019) Moura, Edvaldo Alves de; Leite, Maurício Luiz de Mello Vieira; http://lattes.cnpq.br/4204641633941814; http://lattes.cnpq.br/2567485677684755