Serra Talhada Research Articles

Balance, Gait, Functionality and Fall Occurrence in Adults and Older Adults with Type 2 Diabetes Mellitus and Associated Peripheral Neuropathy.

Body balance is regulated by sensory information from the vestibular, visual and somatosensory systems, and changes in one or more of these sensory systems can trigger balance disorders. Individuals with type 2 Diabetes Mellitus (DM2) often present peripheral neuropathy, a condition that alters foot sensory information and can negatively influence balance and gait performance of these subjects. To evaluate and compare balance, gait, functionality and the occurrence of falls between individuals with and without a clinical diagnosis of DM2 with associated peripheral neuropathy. Cross-sectional study, which evaluated seventy individuals, thirty-five with and thirty-five without a clinical diagnosis of DM2, of both sexes and age range between 50 and 85 years, who were recruited from Basic Health Units of Serra Talhada, Pernambuco state, Brazil. The volunteers' balance was analyzed using the Berg Balance Scale, gait-related functional tasks were measured using the Dynamic Gait Index, functional mobility was assessed using the Timed Up and Go test and functionality was assessed using the Katz Index. The occurrence of falls was recorded by the volunteers' self-report. Individuals with DM2 demonstrated the worst performance in balance (p = 0.000) and in gait-related functional tasks (p = 0.000), slower functional mobility (p = 0.000) and worse functionality (p = 0.016) compared to the group without DM2, demonstrating significant differences for all analyzed outcomes. A greater occurrence of falls was observed in individuals with DM2, compared to those without the disease (p = 0.019). Individuals with DM2 demonstrated worse performance on balance, gait-related functional tasks, slower functional mobility and worse functionality compared to those without the disease. Individuals with DM2 had the highest occurrence of falls in this study.

Social-Digital Inclusion of People with Intellectual Disability: a study with the assisted of APAE in Serra Talhada

Social-digital inclusion is a pertinent phenomenon that seeks, among other things, to ensure access and technological appropriation to individuals who are in a situation of exclusion. While research institutes have been generating valuable insights into social-digital inclusion among the general population in recent years, there remains a dearth of specific data concerning individuals with disabilities. To address this gap, this study developed a research instrument and collected data from individuals with intellectual and multiple disabilities, who represent a social group with significant e-exclusion. The research was conducted at the Association of Parents and Friends of the Exceptional in Serra Talhada. Two questionnaires were administered: one focused on household-related data and the other on specific information regarding individuals with disabilities. Fifty families participated in the first questionnaire, with twenty individuals assisted by the association completing the second. While many results align with those found in the general population, it became evident that there is a need to consider the manner in which technology is utilized—advocating for conscious and responsible use. Finally, the findings of this research can serve as a foundation for the development of institutional and public policies, as well as for further research with this population.

Morphophysiological indicators, phenophase and cutting time in an irrigated forage cactus–sorghum intercropping system under strategies of agricultural resilience and agriculture biosaline

AbstractThe objective of this study was to evaluate growth and development in an irrigated forage cactus–sorghum intercropping system under different strategies for improving agricultural resilience. The research was carried out from 2018 to 2020 in Serra Talhada, Pernambuco, Brazil, in four experiments in a randomized block design, each with four replications. The first experiment consisted of different configurations for the cactus–sorghum intercropping system (Orelha de Elefante Mexicana [OEM]‐single crop [SNG], IPA Sertânia [IPA]‐SNG, Miúda [MIU]‐SNG, OEM–SF11, OEM–Progenitor 288 [P.288], OEM–467, IPA–SF11, IPA–P.288, IPA–467, MIU–SF11, MIU–P.288 and MIU–467); in the second and third experiments, the cactus–sorghum system was planted under different planting densities (100,000; 50,000; 33,333; 25,000 and 20,000 plants ha−1 for forage cactus and 200,000 plants ha−1 for sorghum) in east–west and north–south orientations, respectively; and the fourth experiment consisted of different planting densities for the cactus and sorghum (50,000; 40,000; 33,333; and 28,571 plants ha−1 and 200,000; 160,000; 133,333; and 114,285 plants ha−1, respectively). The maximum values of the dry matter accumulation rate were observed in the cultivation configurations that contained the OEM clone and at the highest densities. The different cultivation configurations affected the duration and number of phenophases. The cutting time increases as the planting density increases (50,000 and 100,000 plants ha−1) and when the OEM clone is used.

Intercropping impacts growth in the forage cactus, but complementarity affords greater productivity, competitive ability, biological efficiency and economic return

CONTEXTSoil and climatic conditions limit forage production in semi-arid environments. Planting crops adapted to these elements, combined with management practices such as intercropping and irrigation, can ensure the sustainability of animal feed. OBJECTIVEThe aim of this study was to evaluate growth, forage productivity, soil water balance, water indices and the indices of biological efficiency, competitive ability, and economic return in a dense crop of forage cactus, grasses, and legumes under single and intercropping systems in a semi-arid environment. METHODSThe study was carried out from 2020 to 2022 in Serra Talhada, Pernambuco, Brazil. The plants used were the ‘Orelha de Elefante Mexicana’ (OEM) clone of the forage cactus, pigeon pea (‘crioula’), millet (‘Bulk-01’) and sorghum (‘SF15’). A randomised block design was adopted, with three repetitions, including single crops of the forage cactus, sorghum, millet and pigeon pea, as well as the cactus intercropped with pigeon pea, millet and sorghum. Biometrics and biomass were checked to determine morpho-physiological indices, phenology, cutting time, biological efficiency and competitive ability. The soil moisture was also monitored, and the soil water balance quantified. The water indices and economic return were then calculated. RESULTS AND CONCLUSIONSGrowth rates and phenology were not affected by intercropping, only by the cutting time. During the first season, the single sorghum and cactus-pigeon pea system showed a variation in soil water storage of 26 mm, while during the second season, the single cactus stored 66.74 mm. The actual evapotranspiration ranged from 1109 in the cactus-millet system to 1152 mm in the single cactus and millet (1st season), and from 1510 in the single cactus to 1570 mm in the sorghum (2nd season). The cactus-sorghum system was the most productive, with 460.53 Mg FM ha−1 and 43.55 Mg DM ha−1 in season one, while in season two, the single cactus obtained 237.64 Mg FM ha−1 and 26.71 Mg DM ha−1. Intercropping promotes more productive stability and feed diversity, as well as greater biological efficiency, competitive ability and economic return. SIGNIFICANCEUnderstanding the changes that exist in a intercropping system is important, especially in semi-arid regions, since these have distinct characteristics that impact the development of crops. Thus, this work contributes comprehensively to resilient practices for the semi-arid, seeking to ensure the sustainability of the intercropping systems and understand the interrelationship between species from the management adopted.

Labor relations as an indicator of social responsibility in the perception of employees at the Serra Talhada academic unit of the Federal rural University of Pernambuco

The emergence of the concept of sustainable development and social and environmental responsibility in organizations has evolved over time, from a view focused on the economic and legal aspects to a new stance of organizations that includes responsibility in labor relations or the social aspect. In this context of change, both private and public organizations have made efforts to contemplate labor relations in their daily practices and in the decisionmaking process. Public institutions, and within them, Higher Education Institutions (HEI),play a fundamental role in this aspect as a driving force in changing proactive behaviors in relation to their collaborators, in addition to having a training role externally, citizens or future entrepreneurs who have a more humane background and are committed to the quality of life in the work place. In this sense, this study aims to investigate the social responsibility practices contemplated in the management of the Serra Talhada Academic Unit of the Federal Rural University of Pernambuco (UAST/UFRPE), from management and operational practices related to labor relations, besides knowing the perception of the servers about suchpractices. The research adopted a qualitative and quantitative approach and is configured forbeing applied and descriptive in nature. For data collection, questionnaires were used. As a result, it was possible to highlight the concern with the issue of labor relations by the institution since it is formally inserted in it’s management, even if in an embryonic way. However, the perception of the staff differs as to the institutional position regarding socialissues, especially regarding labor relations, suggesting the need for better dissemination of existing actions in UAST.

Produção de tomate-cereja irrigado utilizando canteiros econômicos com mulching

ABSTRACT Technologies that improve water use efficiency (WUE) and increase crop yields are essential for the development of a responsible and productive agriculture. Therefore, the objective of this study was to evaluate economical planting beds with the use of mulching and application of different irrigation water depths as a water-saving technology, and determine the irrigation water depth that promote the optimal plant development and fruit yield and quality of two cherry tomato cultivars. The experiment was conducted at the Federal Rural University of Pernambuco, Serra Talhada, PE, Brazil. A randomized block experimental design with split-plots (5×2) was used, with plots consisting of five irrigation water depths (25%, 50%, 75%, 100%, and 125% of the crop evapotranspiration - ETc) and subplots consisting of two cherry tomato cultivars (Carolina and Yubi), with four replications, totaling 40 experimental units. The development of tomato plants was evaluated through biometric measurements of stem diameter, plant height, and canopy area. Additionally, the following variables were evaluated during fruit harvest: number of fruits, mean fruit weight, fruit diameter, fruit yield, WUE, titratable acidity, pH, and soluble solids content. The economical planting beds promoted increases in WUE. Irrigation water depths lower than 100% of ETc resulted in better plant development and higher fruit yield, number of fruits, and WUE for the evaluated cherry tomato plants. The cultivar Carolina exhibited higher production performance compared to Yubi.

The association between morphological characteristics and yield in forage cactus clones varies according to water regimes: a principal component analysis

Forage cactus species exhibit distinct morphological characteristics, which have a relationship to yield and can be affected by different water conditions. The objective was to analyze, with the principal components analysis (PCA), the association between morphological and productivity variables in forage cactus clones in different water regimes. We cultivated, in Serra Talhada, Brazilian semiarid, the Miúda (MIU), Orelha de Elefante Mexicana (OEM) and IPA Sertânia (IPA) clones under four water regimes based on crop evapotranspiration – ETc (0%, 40%, 80% and 120% ETc). Between the years 2016 and 2018, morphological and crop productivity data were obtained. Two main components explained >82% of the total variability of the data, and the relationship between morphological and production variables depended on the clone and the water regime. The production of fresh and dry matter was more influenced by the morphological characteristics in the MIU and OEM clones. The IPA clone showed no correlation between the variables analyzed, regardless of the water regime. PCA can be used to understand the growth dynamics of plants and to identify the water conditions that act in the production of cactus clones, favoring better management in the cultivation of culture.

Comparisons of sequential water balances between 1920-2018 in the municipality of Serra Talhada and São Bento do Una – Pe, Brazil

A sequential water balance was performed using the Thorn Thwaite and Mather method in order to verify the contribution of water storage and damming in the municipality of São Bento do Una in relation to the water crisis. The monthly average climatological precipitation data were grouped into 95 years, characterizing a period of climatological normal, where the software was used in electronic spreadsheets to extract the values ​​of the monthly, annual averages of precipitation for the period from 1920 to 2018. Were estimated by the multiple regression line methods applied to the T-estima software, taking into account the geographic coordinates. Climatic impacts have caused changes in the region's water balance in the last decade. Environmental degradation, the local effect of human action, has by itself accelerated the process of modifying the regional climate, thus directly affecting the conditions of the rainfall regime and the availability of water in the soil. It is extremely necessary to use rainwater harvesting and other storage sources for human, animal and plant survival, thus contributing to the agricultural and poultry sector in the region. Climatic impacts may cause changes in the region's water balance, as heavy and short-lived rains are expected, leading to a drop in poultry and agricultural production.

Use of biostimulants in millet as strategies for tolerance to salinity of irrigation water

Millet is grass with high forage potential in semi-arid regions, both for its versatility of use and nutritional quality. The objective of this study was to evaluate the influence of a biostimulant and the plant extract (Cyperus rotundus) on the growth forage, and grain production in millet (cultivar IPA BULK 1BF) submitted to salt stress conditions. The research was carried out at the Serra Talhada Academic Unit, Federal Rural University of Pernambuco, in the Semiarid region of the Northeast of Brazil, from February to April 2017. The experiment was installed in randomized blocks, in a 3x4 factorial scheme, composed of a biostimulant (ACADIAN®), nutsedge extract, and the control, in four salinity levels of the irrigation water, electrical conductivities of 0, 1, 2 and 4 dS m-1, with four repetitions. Biometric analysis of all plants was carried out weekly to monitor crop growth. At 77 days after emergence, measures of net CO2 assimilation and transpiration rates were obtained. The harvest occurred with the maturation of the grains (ED9), being analyzed the dry mass of the different morphological components of the plant. The biostimulant at the level of 2 dS m-1 promoted an increase of 66% in the leaf area of millet compared to the control. With 4 dS m-1, the nutsedge extract provided an increase of 253% in the leaf area compared to the control. These expressive results obtained with the use of these compounds reflected in a production of dry leaf blade mass. The IPA BULK 1 BF millet cultivar has tolerance to the salinity levels studied in this research. The nutsedge extract and the biostimulant are alternatives capable of stimulating the growth and the production of forage of millet under the presence of salts in the irrigation water, however, these compounds have no influence on grain production

Gas exchange and millet phytomass under organic fertilization and graywater irrigation

ABSTRACT Graywater is an alternative method to increase the water supply for agricultural production in semi-arid regions. The objective of this study was to evaluate the effects of different irrigation depths of graywater on the gas exchanges and phytomass of millet plants with and without organic fertilization. The research was conducted under greenhouse conditions in Serra Talhada municipality in semiarid region of Brazil, in a randomized complete block design with a factorial (4 × 2 + 1) plot and three replicates. The first factor corresponded to graywater irrigation depth equivalent to 25, 50, 75 and 100% of the available water content of the soil, and the second factor was the addition of bovine manure as fertilizer (0 and 34 Mg ha-1), and a control (irrigation with low-salinity water). Irrigation with graywater effluent did not promote adverse effects on gas exchanges and phytomass accumulation; however, it also did not provide enough nutrients to promote increase in these variables. The reduction in irrigation depth caused a decrease in gas exchange from 45 days after the application of the treatments. The basal tiller mass was the most favored plant component due to organic fertilization.

ECONOMIC VIABILITY OF BEET CROPS USING Calotropis procera BIOMASS AS SOIL FERTILIZER IN TWO GROWING SEASONS1

ABSTRACT The use of green manure from spontaneous species has gained prominence for vegetable crops focused on environmental sustainability and is an alternative method for the Semiarid region in the Northeast of Brazil. Two experiments were conducted in two growing seasons (autumn and spring-summer), in Serra Talhada, PE, Brazil, to evaluate the effects of different amounts of biomass of Calotropis procera (roostertree) and incorporation times on the agro-economic performance of beet crops. A randomized block experimental design was used, with three replications, in a 4 × 4 factorial arrangement; the first factor consisted of amounts of C. procera biomass (5.4, 8.8, 12.2, and 15.6 Mg ha-1 on a dry basis) and the second factor consisted of times of incorporation into the soil (0, 10, 20, and 30 days before planting beet). Commercial root yield, production costs, and the following economic indicators were determined: gross income, net income, return rate, and profitability index. The use of 15.6 Mg ha-1 of C. procera biomass resulted in the highest gross and net incomes and the use of 5.4 and 12.2 Mg ha-1 resulted in the best return rates and profitability indexes in autumn and spring-summer seasons, respectively; the planting time was considered as ideal for the biomass incorporation. The spring-summer growing season resulted in a higher economic return than the autumn growing season. The use of C. procera as a green manure for beet production is economically viable, regardless of the factors evaluated.

DIAGNÓSTICO MOLECULAR DA RESISTÊNCIA DE HAEMONCHUS CONTORTUS AO GRUPO DOS BENZIMIDAZÓIS EM OVINOS E CAPRINOS NO ESTADO DE PERNAMBUCO, BRASIL

Sheep and goats suffer heavy losses due to the high prevalence of gastrointestinal nematodes, mainly from the nematode Haemonchus contortus. The parasite causes high morbidity and mortality, even though, the indiscriminate use of chemicals to control H. contortus has favored the selection of multidrug resistance parasites. Molecular diagnosis of resistance to the benzimidazole (BZs) group is important to indicate substitute strategies of control. The aim of this study was to determine the presence of the mutation at position F200Y of the beta-tubulin gene in seven populations of H. contortus from sheep and goats’ farms from the state of Pernambuco, Brazil. Twenty adult H. contortus male worms were recovered for DNAextraction from naturally infected animals, from farms from Recife, Sairé, Camocim deSão Félix, Gameleira, Moreno, Bonito, and Serra Talhada. The primers forward: 5` AAT GCT TCC ACC CTT GTC CAT C 3’, and reverse: 5’ CAA CAA CGG GCA TGA AGA AG 3’ were used to search for the main codon (F200Y) of the beta-tubulin gene to determine BZ resistance. The NC1/ITS-2 forward: 5’ ACG TCT GGT TCA GGG GTT TT 3’ and reverse: 5’ TTA TCT GTT TTT CCT GCC CT 3’ primers were used for confirming H. contortus species. A questionnaire was applied to obtain information on management practices, including the frequency of BZs use. The sequences from the NC1/ITS-2 confirmed the presence of H. contortus from all samples. The F200Y mutation responsible for BZ resistance (TTC/TAC) in H. contortus was found only in the samples from Sairé, as the TTC codon varied from 55.6 to 85.7%. In relation to the questionnaire, producers revealed the absence of quarantine for newly arrived animals; high drug treatment frequency (60-days interval); treatment of the whole flock; the visual estimation of the weight of the animals for dose determination; and high drug rotation. It was also mentioned the lack of veterinary assistance with no use of fecal exams. Even though, all these factors may be essential to increase parasite selection pressure, it was not possible to determine which of those showed a higher risk due to the high number of variables and the small number of participants. This is without any doubt one of the great difficulties to correlate phenotypic drug efficacy data (ex. FECRT) and genotypic-related (ex. PCR) resistance markers in helminths. We have included some risk factors reported by the farmers from Pernambuco and their influences in the process of drug selection, as well as a few strategies to mitigate this situation. The present report constitutes the first record of a molecular diagnosis of the mutation F200Y that confers resistance to the BZ group in ruminants in the state of Pernambuco, Brazil.

Growth dynamics and accumulation of forage mass of forage cactus clones as affected by meteorological variables and water regime

Comprehending the relation between climatic variables and the productive and morphological characteristics of the forage cactus is essential to the adjustment of the management of its production in different agro-climatic areas. The aim of this study was to evaluate the interrelationship between the meteorological variables and the water regime with the growth dynamics and accumulation of forage mass of three different forage cactus clones. We submitted the clones Miúda–MIU; Orelha de Elefante Mexicana–OEM and IPA Sertânia–IPA to three water regimes (40 %ETc, 80 %ETc and 120 %ETc), plus the non-irrigated condition (0 %ETc), during 18 months, in the municipality of Serra Talhada, Pernambuco, Brazil. Morphological, structural, and productive characteristics of the plants, and environmental variables were supervised throughout the experimental period. Pearson’s correlation, multicollinearity test, canonical correlation and path analysis were applied to these data. It was observed that the minimum air temperature, the relative air humidity, and the irrigation were the variables that affected the growth dynamics and the accumulation of fodder mass of the forage cactus clones the most. The clone OEM presented more sensitivity to the environmental conditions (climate and irrigation) in comparison to the other clones MIU and IPA. The environmental conditions affected the growth dynamics more than the productivity of the clone from the genus Nopalea. It was determined that the species of forage cactus presented differentiated morphological and productive responses among themselves, under semiarid conditions in Brazil.

A spatial approach to rainfall in Sertão do Pajeú – Pernambuco

Changes in precipitation have implications for the hydrological cycle and water resources. Climate change is expected to alter average temperature and precipitation values, increasing the variability of these events, which could cause more intense and frequent floods and droughts. The objective of this study was to characterize the rainfall in the microregion of Pajeú, in Pernambuco, as well as to provide subsidies for public policies aimed at water scarcity. For this, rainfall data were used at stations belonging to the micro-region and its surroundings, for the period from January 1980 to December 2019. In addition, to mitigate the influences caused by temporal heterogeneity, stations with large discontinuity of information. The Inverse Weighted Distance was used to perform the interpolation of data and preparation of maps with isolines of rainfall. The results show the places with the highest annual rainfall during the study period were Serra Talhada and Triunfo, and the lowest rainfall occurred in the vicinity of Ingazeira and Tabira.

Behavior of pigs subjected to climate control system in the Semiarid Region of Pernambuco, Brazil

The objective was to thermally characterize the facilities during the growth and finishing phases of pigs and to evaluate the influence of climate control systems on the expression of the behaviors of pigs. The experiment was conducted at the Federal Rural University of Pernambuco, Serra Talhada, PE, Brazil, during the spring of 2019. Twenty-seven pigs aged 63 days were used. The animals were submitted to pens without climate control system, with forced ventilation, and with an evaporative adiabatic cooling system. Dry bulb temperature (°C), relative air humidity (%), black globe temperature (°C), and swine behavioral responses were recorded, submitted to multivariate analysis, using the principal component technique. Pens with the evaporative adiabatic cooling system showed a significant reduction in air temperature and an increase in relative air humidity, during the two phases. Pigs submitted to evaporative cooling showed greater ingestive activity and lethargic behavior, typical of the studied phases

Dinâmica de nidificação de Apis mellifera na Caatinga pernambucana: Chuvas e floradas apícolas influenciam no processo?

O comportamento de Apis mellifera em áreas urbanas tem causado acidentes com seres humanos e animais domésticos. Ações que visem minimizar o problema, como a captura, são essenciais. Assim, o presente trabalho buscou compreender a dinâmica de nidificação e a variação anual das ocorrências de enxames e colônias, as suas relações com a precipitação pluviométrica e a floração apícola. O trabalho foi realizado no Sertão Pernambucano, em Serra Talhada, principalmente, e em cidades vizinhas. As ocorrências foram registradas no período de 2014 a 2015. Colônias e enxames foram capturados e levados para o apiário da Unidade Acadêmica de Serra Talhada, ou doados para uma comunidade de assentados. Dados pluviométricos foram coletados, e o levantamento do pasto apícola em Serra Talhada, através de transectos aleatórios de 1.500m a partir do referido apiário. Foram registradas 115 ocorrências, sendo 65% em áreas urbanas e 35% em áreas rurais. Desse total, 76% foram de colônias nidificadas e 24% de enxames provisórios. Em relação ao tamanho, 62% foram considerados grandes, 22% de porte médio e 16% pequeno. O maior número de ocorrências foi verificado entre os meses de março e abril, coincidindo com o período de maior precipitação acumulada e as floradas. Desta forma, as abelhas capturadas possibilitaram uma redução de riscos à sociedade, contribuíram para uma renda extra dos assentados e aulas práticas universitárias. A dinâmica de nidificação de A. mellifera, na área de estudo, mostrou estar relacionada ao período com maior volume de chuvas e também de maior disponibilidade de recursos florais.

Impacto do aumento de CO2 nas Precipitações do estado de Pernambuco

Procurar mitigar os efeitos das mudanças climáticas exige conhecer a situação atual e as possíveis consequências do aumento de CO2 na atmosfera nas diferentes áreas do conhecimento e escalas espaciais. Na escala global os estudos já estão bastante difundidos. Na escala regional e local esses estudos ainda precisam de avanços. Diante do exposto, este estudo pretende avaliar os impactos do CO2 atmosférico nas precipitações do estado de Pernambuco. Foi escolhido cinco municípios do estado, Recife, Garanhuns, Serra Talhada, Belém do São Francisco e Petrolina. Esses municípios representam as mesorregiões do estado, que estão relacionadas com as suas características climáticas. Foram aplicados vários métodos estatísticos para identificar as relações existentes entre as variáveis e quanto forte são essas relações, correlação e multivariada. Foi utilizado o SUPer-Sistema de Unidades de Respostas Hidrológicas para Pernambuco para discutir os resultados com o balanço de hídrico de bacias de Pernambuco. Os resultados mostram que Pernambuco terá duas condições impactantes com o aumento de CO2 atmosférico, Agreste Litoral aumento de precipitação e Sertão diminuição de precipitação. Sendo o Agreste mais forte o impacto. Considerando o SUPer foi possível perceber que em torno de 60% da precipitação de Pernambuco é transformada em evapotranspiração. Sabe-que o aumento de CO2 impacta a evapotranspiração da planta. Assim, é possível afirmar que não somente as alterações das precipitações serão impactantes nos recursos hídricos como também a evapotranspiração que são variáveis importantes no ciclo hidrológico das bacias de Pernambuco.Impact of increased CO2 on precipitation in the state of Pernambuco A B S T R A C TSeeking to mitigate the effects of climate change requires knowing the current situation and the possible consequences of the increase in CO2 in the atmosphere in different areas of knowledge and spatial scales. On a global scale, studies are already widespread. At the regional and local scale, these studies still need to be advanced. Given the above, this study aims to assess the impacts of atmospheric CO2 on rainfall in the state of Pernambuco. Five municipalities in the state were chosen, Recife, Garanhuns, Serra Talhada, Belém do São Francisco and Petrolina. These municipalities represent the mesoregions of the state, which are related to their climatic characteristics. Several statistical methods were applied to identify the relationships between variables and how strong these relationships are, correlation and multivariate. The SUPER-System of Hydrological Response Units for Pernambuco was used to discuss the results with the water balance of Pernambuco basins. The results show that Pernambuco will have two impacting conditions with an increase in atmospheric CO2, Agreste and Litoral, an increase in precipitation and Sertão, a decrease in precipitation. The strongest impact being the Agreste. Considering the SUPER, it was possible to see that around 60% of Pernambuco's precipitation is transformed into evapotranspiration. It is known that the increase in CO2 impacts plant evapotranspiration. Thus, it is possible to state that not only changes in precipitation will impact water resources, but also evapotranspiration, which are important variables in the hydrological cycle of Pernambuco basins.Keywords: Climate change, water balance, evapotranspiration, SUPer.

Water and Radiation Use Efficiencies by Erythrina velutina and Enterolobium contortisiliquum Under Different Water Conditions

Abstract This study investigated the water and radiation use efficiencies by Erythrina velutina and Enterolobium contortisiliquum under four water regimes. The experiment was carried out in the municipality of Serra Talhada, PE, Brazil. The experimental design was completely randomized with a 2 x 4 factorial arrangement and three replications. The water regimes were imposed from water replenishments based on the reference evapotranspiration (25, 50, 75 and 100% ET0). Water and radiation use efficiencies were calculated to the 120 days of growth. E. velutina showed a greater accumulated dry biomass (4.89 g pl-1) than E. contortisiliquum (2.22 g pl-1). The 75% ET0 water regime can be adopted without damage to the growth of both species. E. velutina was more efficient in the conversion of water (0.42 g l-1) and radiation in dry biomass (0.028 g MJ-1), indicating high environmental resilience, which is important features to choose species more adequate for reforestation activities.

As danças do Nordeste brasileiro nos museus sobre Luiz Gonzaga “o rei do baião”

De que maneira os museus enquanto lugares da memória de Luiz Gonzaga representam sua participação no processo de mediação cultural das danças regionais – xote, xaxado e baião –para o restante do país? A fim de responder a esta questão, nosso objetivo foi analisar o papel dos museus que tematizam a biografia de Luiz Gonzaga como instrumento de preservação histórica das danças do Sertão do Nordeste brasileiro. Para tanto, tomamos como conteúdo cinco matérias, oito fotos, um filme e uma letra musical encontradas em três museus nas cidades de Exu, Serra Talhada e Recife no estado do Pernambuco – Brasil. Além das fontes documentais, valemo-nos da entrevista semiestruturada para captar a visão dos dirigentes dos museus. Concluímos que as matérias sobre Luiz Gonzaga nas fontes documentais cumprem a função pedagógica do ensino destas danças através de suas ações de preservação, contribuindo para o processo de expansão das danças regionais no resto do país.

Multivariate analysis in the morpho-yield evaluation of forage cactus intercropped with sorghum

ABSTRACT Understanding the effect of the cropping system on the morpho-yield relationship of plants is crucial for success in the agricultural activity, mainly in arid and semi-arid regions, where there are major challenges for food production. In this study, the objective was to apply multivariate statistics in the morpho-yield evaluation of forage cactus clones in cropping systems as sole crop and intercropped with sorghum cultivars. The experiment was conducted in Serra Talhada, PE, Brazil, between March 18, 2017 and June 16, 2018. The design adopted was in randomized blocks with 12 treatments composed of three forage cactus clones in sole-crop system (IPA Sertânia, Miúda and Orelha de Elefante Mexicana) and nine forage cactus-sorghum intercropping systems with the cultivars 467, SF11 and 2502. Morphometric and phytomass measurements of forage cactus clones were performed throughout the cycle. The relationship between the morpho-yield traits of the clones was evaluated by means of principal component analysis. Cladode width, length, perimeter, and area are morphometric variables that determine phytomass accumulation in clones. The cropping systems did not influence the association of morpho-yield traits, but it depends on the genus of forage cactus. Negative correlations between cladode dimensions and phytomass of the clones of the genus Nopalea explained their lower phytomass accumulations. Principal components analysis makes it possible to elucidate associations between morpho-yield variables of forage cactus.