RCAAP Repository

In this research we assess the reading comprehension of individuals confronted with different forms of organization, content and textual context. Based on the theory of the cognitive processes of reading Kleiman (2004), in the definition of the characteristics of hypertext of Marcuschi (1999, 2001, 2005, 2007) and the Theory of Mental Spaces and Conceptual Integration of Fauconnier (1994, 1997, 1998 , 2002), we hypothesized that the hypertextual organization with its resources hypermedia influence the process of reading comprehension and produce different conceptual integration networks compared to the linear version. A second hypothesis is that reading in different content or nature ignites different models of understanding. To check whether the textual organization interferes with the reading processing, two experiments were produced. For each of them was built a hypertext version and one identical in the linear version. To investigate the influence of the nature and content of the text, the first experiment contained a scientific text, and the second a journalistic article. After reading the texts, the informants were subjected to a questionnaire that aimed to assess important reading skills, namely: understanding global/theme, location explicit information, inference of implicit information, establishment of local coherence relations and establishment of relationships coherence links. The responses were analyzed quantitatively, the second reading, and guided by the Blending Theory of Fauconnier (1994, 1997, 1998, 2002), we showed how we operate with mental spaces, as well as establish relationships and connections between them in the construction signification.

Epidendrum L. (Laeliinae, Orchidaceae) has about 1,800 species distributed in the Neotropical regions. Their species present a high degree of morphological variation, ecological interactions and diversity in the chromosome number, which, at times, makes it difficult to establish infrageneric classifications and taxonomic organization in the genus. The aim of this research was to discuss the chromosomal number and the distribution of heterochromatic regions with the use of the fluorochromes cromomycin A3 (CMA) and 4'6-diaminidine-2-phenylindole (DAPI) in species of different infrageneric groups of Epidendrum, as well as to analyze the karyotype (chromosome number and heterochromatic bands) and genome size (2C-value) in species of the "Difforme" and "Nocturnum" groups. The "Nocturnum" group is marked by polyploidy and regions rich in CMA+ bands located in the pericentromeric region. DNA content was generally correlated to the level of ploidy, where one diploid species presented 2C = 2.91 ρg, tetraploids species presented 2C ~ 6.00 ρg and one hexaploid species presented 2C = 8.92 ρg. For the "Difforme" group, all species presented 2n = 40 and variable numbers of terminal (0-4) and pericentromeric (8-16) CMA+/DAPI– bands. DNA content ranged from 3.99 ρg in E. campaccii Hágsater & L. Sanchez to 5.68 ρg in E. althausenii A.D. Hawkes. The data of heterochromatin distribution, 2C-value, chromosome number and morphological characters allowed discussing new taxonomic considerations for the species of the "Difforme" and "Nocturnum” groups. The discussion involving heterochromatin distribution on infragenerics groups of Epidendrum comprised 47 species belonging to 20 groups. New chromosome records are recorded for 22 species. Most karyotypes presented 2n = 40 and heterochromatic regions rich in GC (CMA+). Heterocromatic bands rich in AT (DAPI+) were recorded especially in the Schistochilum and Loefgrenii groups. Variations in the chromosomal number allied to the heterochromatin distribution appear to follow a specific pattern for most of the groups analyzed. Ecological factors such as habit and habitat and geographic distribution are also discussed among the different groups of Epidendrum and reconciled in the infrageneric discussions for the genus.

This objective of this study to evaluate the effect of the different proportions of cactus pear silage (Opuntia fícus-indica mill) and the intermittent supply of water in sheep with no defined racial pattern on carcass characteristics and meat quality. This study used 36 male sheep, with no defined racial pattern were used, with a mean initial weight of 19.8 ± 2.1 kg and mean age of 6 months, distributed in a randomized complete block design in a 3 x 3, composed of 3 substitution proportions of tifton hay by palm silage in the diet (0, 21 and 42%) and three water supply intervals at the watering station (0, 24 and 48 hours) with 4 replicates during 84 days in feedlot. The intermittent supply of water influenced (P <0.05) only the morphometric measure of the croup width and the weight of the spleen organ. There was an effect (P <0.05) of the inclusion of cactus pear silage on the majority of biometric and morphometric means, with higher values corresponding to the treatments with 42% of cactus pear silage. The animals fed with cactus pear silage showed higher values for empty body weight, warm and cold carcass weight, carcass yield, lower cooling loss, with AOL (13.98) higher in the treatment containing 42% silage. The treatment without the inclusion of cactus pear silage presented lower weights of the commercial cuts, however, their yields were not affected. The animals that received 42% of cactus pear silage in the diet presented greater organ development and buchada weight (5.07 and 5.43). The tissue composition of the animals that received palm silage had higher muscle and bone weights. Less bright meat, with a lower red and yellow hue were verified with the inclusion of 42% silage. Some saturated, monounsaturated and polyunsaturated fatty acids were affected with a 42% inclusion of cactus pear silage in the diet. The intermittent supply of up to 48 hours does not affect the carcass characteristics and meat quality of lambs. The replacement of tifton hay in 42% of palm silage provides greater body development of lambs, heavier and higher yielding carcasses, higher weights for commercial cuts, meat with good quality and lipid profile of the meat with little expressive differences in relation to that of tifton hay.

The objective of this study was to verify if the ambient temperature and dietary energy levels influence the morphometric characteristics of goat milk fat globules. The experiment was conducted at the Animal Bioclimatology Research Unit of the Federal University of Paraíba, Campus de Areia, State of Paraíba, Brazil. Twelve alpine brown multiparous goats with a mean age of 4.02 ± 1.78 years, live weight 41.8 ± 4.59 kg, average production of 2.16 ± 0.59 kg of milk were used. The experimental design was a 2x3 type crossover (2 temperatures and 3 diets), with the two temperatures: T1 = 26 ºC (thermoneutra) and T2 = 34 ºC (stress) and 3 levels of energy in the diet (low, medium and high ), The experiment was conducted in two 20-day periods. From the basal diet, a quantitative restriction was applied in the supply of ration for the treatment of low energy, as well as, the diet was formulated for the treatment of high energy. The data were submitted to analysis of variance (ANOVA) and the averages were compared by the Tukey test, considering significant differences, at the 5% level of probability, through PROC GLM of SAS (2003). The data were submitted to an interaction analysis (Table 3) and it was observed that there was no significant interaction (P> 0.05) for the studied variables considering temperature xdieta, in this way the effects were worked separately (Table 4 and 5). Milk production, fat, GGL amount and classification (small, medium and large) had no significant effect of temperature (P> 0.05). The diameter variable had a significant effect (P <0.05) for temperature (Table 4). Milk fat, diameter and amount of GGL as well as the percentage of small GGL were influenced by diet (P <0.05) (Table 5). Ambient temperature and dietary energy levels interfere with the fat globule diameter of goats' milk and there is a higher concentration of small globules (below 2.0μm) and is considered an important characteristic in digestibility and quality of goat's milk.

The objective of this study was to evaluate the effect of water restriction and low diets and high energy in thermoregulatory responses and feeding behavior of crossbred sheep of St. Agnes. 40 animals were used, not castrated, with average body weight of 18.85 +2.80 kg and approximately five months old, kept in individual stalls. The experimental diets were composed of Tifton 85 hay (Cynodon spp.) And concentrate (corn and soybeans) in a forage: concentrate ratio 3: 7 (highenergy diet) and 7: 3 (low-energy diet). Water was provided ad libitum and restricted in 50% of the daily need. The experimental design was completely randomized in a 2x2 factorial (two energy levels and soil water availability), with 10 repetitions for each factor. Data were analyzed by analysis of variance procedures. There was no interaction (P> 0.05) between dietary energy content and the availability of water, according to the analysis of variance, to feeding time, idling time. There was no interaction effect (P> 0.05) between the type of diet and the availability of water, according to the analysis of variance for the variables HR, TR and TS. There was an interaction effect (P <0.05) between the factors of dietary energy content and availability of water for the FR variable. There was no interaction effect (P> 0.05) between the factors of dietary energy content and availability of water, subject to the weight of organs and viscera.The dry matter intake was unchanged in water restriction interaction and dietary energy, and the development of organs and viscera, showing that the animals did not suffer water stress.

The Caatinga Biome is unique to Brazil and constitutes one of the richest in biodiversity, despite the constant anthropic disturbances. On the other hand, it is necessary to recover the degraded areas, especially in places with an accelerated process of devastation. The objective of this work was to study the effects of abiotic factors on seed physiology and seedlings of Luetzelburgia auriculata (German) Ducke from two mass classes. For this, the seeds of Luetzelburgia auriculata were collected manually at the Poço da Pedra Farm, located in the city of Caridade-CE and sent to the Laboratory of Seed Analysis of the UFPB in Areia-PB. Prior to the installation of the experiment, each seed unit was individually weighed on an analytical scale (0.001 g) to divide the sample into two classes of light, (<0.35 g) and heavy (≥ 0.35 g) seeds. The water content (TA) and the weight of one thousand seeds (PMS) were first determined, after which the seed classes were submitted to saline and water stresses. As for the first one, the levels of 0,0 were used; 1.5; 3.0; 4.5 and 6.0 dS m-1 with germination (G%), first germination count (PCG), germination speed index (IVG), mean germination time (TMG), shoot length CPA), root length (CR), fresh shoot mass (MFPA), fresh root mass (MFR), fresh cotyledon mass (MFCot), shoot dry mass (MSPA), fresh root mass (MFR), and cotyledon dry mass (MSCot). For water stress, the potentials studied were: 0.0; -0.2; -0.4; -0.6; -0.8 and -1.0 MPa, evaluating, at this stage, the same variables listed above, except for CPA, MFPA, MSPA. Subsequently, in a protected environment, the seedlings produced were analyzed for gaseous exchange and their relationships with meteorological components. The variables studied were: Ambient temperature (TA) and relative humidity (UR), net photosynthesis rate (A), conductance stomatal (gs), internal carbon (Ci), transpiration (E), leaf temperature (TF), water use efficiency (A/E) and carboxylation efficiency (A/Ci). With increasing saline and water stresses, a harmful effect was observed in most of the morphological and physiological variables in both seed classes. Regarding the seedlings, high magnitude correlations were verified between the variables TA, UR, A, E, gs, E, Ci and A/E. The rate of liquid photosynthesis, transpiration and stomatal conductance decreases throughout the day, presenting minimum values at 16 hours. In general, heavy seeds (≥ 0.35 g) are more adapted to the water and saline stresses, so that the physiological quality of light seeds was affected by drought and salinity. The seed class does not influence the gas exchange of the seedlings, but these variables are influenced by the hours of the day and, therefore, are dependent on meteorological factors.

The consumption of mandacaru fruits (Cereus jamacaru) in natura is almost non-existent, even the fruit having benefits for human health and nutrition, serving mostly for animal feed in times of prolonged drought; works that configure the ideal stages of harvesting these fruits can serve as subsidies to be used in cooking in the future. In addition, the occurrence of this species is diffuse, from the coast to the zones of forest of Caatinga, located in the high Sertão, being born in the field without any cultural treatment, supporting xeric environments, with high temperatures, shallow soil, humidity and salinity. Therefore, this work was divided into two chapters: i) the first one had the objective to study the physical and physiological quality of the seeds of Cereus jamacaru in the different staging stages; end ii) in the second chapter the objective was to evaluate the effect of salinity on the physiological quality of mandacaru seeds from three areas of the Agreste region of Paraiba. In the first chapter were selected two areas (Tacima, PB and Bananeiras, PB) of Caatinga; the individuals were randomly collected in 5 staining stages (1. Green 2. Green with purple 3. Yellow with purple 4. Red with purple 5. Predominant purple); In the biometric data the weight (g), length (cm), diameter (cm), pulp mass (g), seed mass (g) and fruit dry mass (g) were evaluated; (g), germination (g%), seedling length (cm), fresh seedling mass (g), dry mass (g) and seed moisture content (%). According to the results it is verified that the seeds coming from Bananeiras, PB show to be more vigorous (first germination count) in all stages of maturation; the maturation stage 5, with the predominance of purple fruits, is indicated for harvesting in both areas, as the seeds present higher physiological quality. In the second chapter, the evaluated variables were: Germination, First germination count, Germination speed index, Average germination time, Seedling length, Fresh seedling mass, Seedling dry matter and Relative water content. In the areas of Tacima, Bananeiras and Remígio, state of Paraíba, fruits were harvested at maturation stage 5 (predominant purple) and submitted to 8 levels of saline concentration in NaCl+ (0,01; 0,5; 1,5; 2; 2,5; 3; 4 e 5 CE dS m-1). Based on the results, the salinity does not negatively affect the physiological quality of the seeds in the respective salt concentrations obtaining in all areas, germination above 70%, this persistence in saline environments denotes a halotolerance of C. jamacaru species.

The use of specialized genotypes for crossbreeding with native breeds together with a technified production system may be a viable alternative to improve the quality of the sheep carcass and to add value to their products. The objective of this study was to characterize the commercial cuts of the carcass of Santa Inês lambs, ½ Dorper x ½ Santa Inês and ¾ Dorper x Santa Santa Inês lambs in confinement. It were used 24 lambs distributed in a design completely randomized with three treatments (genetic group) and eight replicates. The criterion established for slaughter was the confinement period of 68 days and / or the average live weight of the lot (32 kg). The carcasses were sectioned in half with the aid of an electric saw, and the left half carcass was fractioned to obtain the commercial cuts: shank, palette, loin and carré. The index of muscle the leg ranged from 0.40 to 0.48; being the highest value found in the crossbreed ¾ Dp x ¼ SI in relation to the others. Was observed effect significant for the yield of the palette as a function of the genotypes. The Santa Inês genotype was 4.92% higher than the others.The Santa Inês lambs presented percentage of palette (18.29%). The weight of the bones of the leg and palette was influenced (P <0.05) by the genotype, as well as the yield of that leg tissue that was superior for the Santa Inês lambs. The animals ½ Dp x ½ SI obtained greater yield of the muscular tissue of the loin. The muscle: leg ratio of lambs ¾ Dp x ¼ SI was higher. The qualitative characteristics of the lamb carcass were influenced by the genotype, where the SI obtained better finishing and GPR and its crossbreed better conformation. The qualitative characteristics (color, softness, cooking losses) of the meat were influenced by the cut and genotype. The genotype ¾ Dp x ¼ SI presented a slight superiority in commercialization of whole carcass. The Santa Inês genotype presented similar biological and economical performance to crossbreed ½ Dp x ½ SI e ¾Dp x ¼SI. The commercialization of the fractionated carcass in commercial cuts increased by 61% the value obtained from the sale of the whole carcass. Cuts contributed about 80% of total revenue The greater the weight of commercial cuts (leg, palette, loin and carré), the greater economic return is due to the sale of the sheep carcass.

The topic of emigration goes through the Portuguese-Brazilian literature since its origin and comes to contemporarity by the multiple voices of the Portuguese writers scattered in the world. Maria de Lourdes Hortas, Portuguese-Brazilian poet and fiction writer, joins the tradition as she thematizes in her work the figure whitch is composed of a duplet of emigrant- exiled character who are victimized by "saudade" (homesickness) and the obsession for the return to homeland. Guided by Psychoanalysis, we investigate the representation of melancholy on the novels Adeus Aldeia (1 990) and Diário das Chuvas (1995), enfocalizing the psychic constitution of the characters Mariana (AA) and Tâmara (DC), revealed on the analysis through the repetition of symbols that configure the representation of Melancholy. The reading fososing in the poetic writing of the author, it was necessary articuiation to enter into other works of the author because of the studied texts.

The objective of this study was to evaluate the effect of protein sources in the concentrate supplement on milk production, quality and milk fatty acid composition of cows kept on Tanzania grass pasture (Panicum maximum). The experiment was conducted at the Regional Technological Development Hub of the Agribusiness of Alta Mogiana, in Colina, SP. Twelve 12 - month - old dairy cows with average production of 20.92 liters of milk / day were used in the initial third of lactation, kept in Tanzania grass pasture, fertilized, managed with intermittent stocking, with a duration of 84 days divided into 4 periods of 21 days (14 of adaptation and 7 of collections), milk samples were collected during days 3 and 6 of the collection period. Four protein sources were tested: soybean meal, cottonseed meal, peanut meal and sunflower meal, both diets containing 12% crude protein. In the first study it was reported that there was a trend of higher milk production corrected to 3.5% fat from animals consuming peanut meal compared to the other ingredients. The other parameters analyzed were not statistically different. Peanut meal can be used as protein food, and ruminal degradation of crude protein is superior to soybean and cotton meal, and this has led to a better utilization of the food. In the second study, the same methodology of the previous one was used, only evaluating the lipid profile of the milk fat, and there were no significant differences between the ingredients. However, milk was produced with a lower concentration of saturated fatty acids and a greater amount of unsaturated fatty acids, important results because a healthier milk was produced for human consumption. And this shows that any of the protein ingredients can be used in feeding lactating cows.

The objective of this study was to evaluate the productive performance, carcass characteristics and non carcass components of lambs fed with different proportions and types of carbohydrates. Thirty sheared sheep with no defined racial pattern were used, with a mean body weight of 20.5 ± 7.6 kg, with 5 months of age, distributed in a randomized complete block design. The diets consisted of: High Diet CNF (High proportion of non-fibrous carbohydrates); Low diet CNF (Low proportion of non-fibrous carbohydrates) and High diet CNF + cactus (High proportion of non-fibrous carbohydrates and forage cactus). The animals were weighed for performance evaluation. Samples of leftovers and faeces were collected for the evaluation of the bromatological analyzes. The DMI and nutrients intake, performance, carcass characteristics and non-carcass components were evaluated. The consumption of DM and nutrients presented a difference in relation to the diets, except for intake of DM by metabolic live weight, intake of DM by live weight and total carbohydrate intake. For digestibility, only neutral detergent fiber values were not significant. The performance variables showed better results for the diets High CNF and High CNF + cactus. Evaluating the carcass characteristics related to the weights, only renal fat, warm carcass yield, biological yield, cooling losses and loin eye area did not differ. For the yields, only the cold carcass yield presented a significant difference, where the diets High CNF and High CNF + cactus were superior. The weight of the commercial cuts differed, however, only the perch yield showed a difference. The tissue composition did not present different results for semitendinosus weight, pelvic fat and femur length. Their yields varied only for bone yield, total fat, bone, and leg muscle index. The parameters of non-carcass components when evaluated organ weights presented higher averages for the diets High CNF and High CNF + cactus, except for tongue and heart. The same diets showed higher means for weight of “Buchada” and “Panelada”. It was concluded that high proportions of non-fibrous carbohydrates can be used to feed lambs in confinement, promoting better results.

The Northeast is the largest papaya producer in Brazil, with which is of great importance the formation of seedlings, using quality materials for the production of substrates that have physical and chemical characteristics ideals. The objective of this research was to evaluate the physical properties of substrates containing banana fiber and the production of papaya seedlings. The experiment was conducted in a greenhouse in randomized block design with four replications. The seven treatments consisted of substrate compositions consisting of soil in proportions of 42 to 100%, earthworm humus in proportions of 0 to 40% and fiber of the pseudostem of the banana 0 to 30%. The experimental unit consisted of five polyethylene bags with five seedlings. The physical properties of the substrates were evaluated, while in the seedlings were evaluated the emergency speed index, emergency, height and diameter of changes, relative growth rate in height and diameter leaf area, chlorophyll content, dry matter, and leaf contents of N, P and K. The results were submitted to analysis of variance and regression, appropriate for experiment with mixtures. The minimum values of dry and maximum density estimated for porosity total space aeration and minimum remaining water, the estimated maximum values for emergency speed index and percentage of emergency height, diameter stem and relative rate of growth in height of seedlings and as well as area leaf, dry weight of leaf, root, and all were obtained with 42% of vegetable earth, 30% of banana fiber and 28% earthworm humus.

Modifications in the systems of use and management of the soil for the accomplishment of anthropic actions, provoke the alterations in the physical, physical and biological characteristics of the soil, mainly in the substitution of the organic matter of the ground (MOS) modifying, thus, the contents and the nitrogen stocks (N) of Brazilian biomes. In this context, the objective of this study was to evaluate the levels of N in its nitric and ammonia forms in soils under different uses and management in the Caatinga and Cerrado biomes. The present research was carried out in the Cerrado of Piauí in the Quilombo mountain range, located in the municipality of Bom Jesus, and the site of Caatinga was developed in the municipality of Santa Luz, located in Piauí. The treatments consisted of two biomes (Caatinga and Cerrado), three land uses (native vegetation, pasture and agriculture) and seven soil depths in the profile (0 - 10, 10 - 20, 20 - 30, 30 - 40, 40 60-60-80 and 80-100 cm). The variables analyzed were: total N and mineral N (nitrate and ammonium) and by difference, the organic N and the N stock were estimated. According to the results, the conversion of soil use from ecosystems to agroecosystems promotes increases in organic N and N stock in the Caatinga biome. The conversion of native vegetation to pasture or agriculture in the Cerrado biome promotes increases in the values of all variables studied in the 0-20 cm arable layer, mainly in pasture. Regardless of the evaluated biome, it was observed that the values of the different forms of nitrogen in the soil decreased with increasing depth in all management systems (native vegetation, pasture and agriculture). The conversion of a natural system to agricultural use is something that may or may not cause impacts on soil nitrogen contents, as it was presented in this study, the substitution of native vegetation in the Caatinga and Cerrado biomes for agricultural use (agriculture and pasture) conditioned higher levels of nitrogen to the soil when compared to those found in native vegetation.

Researches aimed to soil quality assessment and the community of macroarthropods in agroecosystems in the Apodi Plateau RN are incipient. Therefore, the present study aimed to evaluate the soil quality and the community of macroarthropods in agroecosystems of the Moacir Lucena settlement, Apodi Plateau RN. Soil profile openings were carried out in the environments of Native Vegetation (Ferralsol), Agroecological (Acrisol), Short Cycle Cultivation (Cambissol) and Fruticulture (Ferralsol), where samples with deformed structure and not deformed in its horizons were collected. Interpolations were performed in the layers 0,00-0,05 0,05-0,15 and 0,15-0,25 m for physical analysis (soil granulometric, soil density, WAD, GMD and water retention) (pH, EC, TOC, macronutrients, BS, CEC, V, PTS and m) and biological (provid traps in each environment in the dry and rainy periods to monitor the macroarthropods community of soil). Multivariate statistics was performed for data analysis. Soil quality indexes were generated for the 0,00-0,25 m layer, using a methodology proposed by Karlen and Stott (1994). The physical attributes of coarse sand, fine sand and total sand were more sensitive in the distinction between the environments of Native Vegetation and Fruticulture (Ferralsol) as well as the chemical attributes such as total organic carbon, potential acidity and aluminum. The differentiation of the Agroecological Environment (Acrisol) was given in function of the variables clay and total porosity, besides the greater water retention in the layer of 0,15-0,25 m, and also regarding the chemical attributes of sodium and exchangeable sodium percentage. The Short Cycle Cultivation environment (Cambissol) was discriminated by the average diameter and higher water retention for the three depths. Regarding the chemical attributes, stood out the calcium, magnesium, sum of base content, cation exchange capacity and hydrogen ion potential. For the soil quality, the Short Cycle and Agroecological Cultivation Environments presented the best indexes. The structure of the edaphic macroarthropod community in the Apodi Plateau RN region was influenced by seasonal variations, agricultural uses and physical and chemical attributes of the soil. In general, greater frequency of occurrence, dry biomass, richness and ecological indexes at the level of order are maintained in the Native and Agroecological Vegetation environments in the rainy season in detriment of to the other environments. The physical attributes related to soil structure (MWD and Tp) and the chemical attributes pH, Ca, Mg and CEC influenced the occurrence of the functional group litter transformes (Coleoptera) in the Short Cycle Cultivation Environment (SCC - Cambissol). The predatory functional group (Araneae) was influenced by the total organic carbon and soil density in the Fruticulture Environment (EF - Ferralsol).

The establishment of the School of Agronomy of the Northeast, in Areia, in the State of Paraíba, rests on a chain of political, economic and socio-cultural factors that, in the national, state and municipal context, came together for its creation in 1934. First lay educational institution superior of Paraíba, existed as an isolated institution until 1968, when it became part of the Federal University of Paraíba. This research is based on the assumption that the value of an institution's memory lies in its generative capacity to subsidize the present, to point out ways, to indicate perspectives of study, to reveal contexts and intentionalities, and to express the culture of a community. It aims to re - signify the memory of the School of Agronomy of the Northeast, from its documentary sources, with a view to the elaboration of an inventory of its collection, at the intersection 1934-1968. It is anchored in a theoretical contribution that favors the categories of memory and institutional identity, in the light of classic and current authors such as Nora (1993), Bosi (1995), Le Goff (2003), Ricoeur (2007), Halbwachs (2009) and Thiesen (2013). It feeds on the historiographical method based on Arostegui (2006) and Vergara, (2010). It is a descriptive study of an exploratory and qualitative nature. It is characterized as a bibliographical and documentary research, privileging, as far as possible, original sources that can put the researcher and the community in contact with the history. Data collection was carried out in Campus II of the Center of Agrarian Sciences of the Federal University of Paraíba, privileging the following places of memory: Archive, Library, Directorate, Coordination of Agronomy and Squares. The findings point to the delimitation of three important moments that imply plural identity to the School of Agronomy of the Northeast: the first, from its creation in 1934, to federalization in 1950, granting it identity as a Research Center and Experimental Agricultural Station. The second includes the 1950s, when the Extension activities were increased, with emphasis on the Ruralista Fairs and the creation of the Domestic Crafts Centers for Women. The third covers the 1960s until its integration with the UFPB in 1968, when teaching stood out in relation to the other activities. As a result, we organize the Institution's documents in an inventory format, with the aim of preserving, disseminating and re-meaning their memory. Our scope is to convert this study into a practical aid for the recognition of the Institution, which goes beyond the internal scope of the academy, recomposes the history of higher education in Paraíba and reveals science as a collective domain. The inventory resulting from this work is a starting point for an effective intervention in the collection of the School and a pioneering instrument for new research on the history, memory and identity of the Institution, Higher Education in Paraíba and Agricultural Education in Brazil.

Periodicals need to meet certain requirements and standardizations, these in turn, enable their insertion and permanence of in relevant and qualifying databases. Thus, the main idea of this work is to investigate management practices on behalf of the Portal of Electronic Scientific Periodicals, of the Federal University of Paraíba in João Pessoa-Brazil. The research dealt with periodical inclusion policy, information dissemination and visibility and promotion issues, especially considering those present in: A1, A2, B1 and B2 strata regarding periodicals connected to Postgraduate studies. The research also dealt with the identification of research development agencies. The work identifies the requirements made by the DOAJ, RedALyC, LATINDEX, INDEX COPERNICUS, and SPELL (ANPAD) databases, regarding the acceptance of periodicals. The work presents concepts about State, public policies and scholarly production, points out historical aspects on the emergence of universities, modernization of higher education and post-graduation, and the path to scientific publication. The research is of applied, exploratory nature, uses a qualitative method and presents a case study, applies a monographic method with the use of documental and bibliographic procedures. Dialectical Materialism is used in order to understand the dynamics of the aforementioned Portal and the existing contradictions. The difficulties and/or facilities pointed out by editors when submitting a periodical to the Portal were emphasized as well as aspects related to management practices of the participating Postgraduate Programs of in the Federal University of Paraíba regarding those who were classified in Qualis 2017 indicators. The information gathered was analyzed via qualitative dialogical method. Data collection was done through a questionnaire. It was possible to identify that: a) periodical inclusion policy is incipient in the Portal b) editors demonstrate difficulties to comply with the rules required to include periodicals in the Portal and c) absence of a professional librarian to conduct the insertion process in national and international Databases. At the same time, this research presents suggestions for institutionalization and management of the Portal at the Federal University of Paraíba and indicates and annexes normative documents that rule Scientific Periodical Portals used in similar institutions such: UFPE, UFRN, UFRGS and UFSC. Lastly, it offers a Glossary of terms that refer to the production area of scholarly journals.

The removal vegetation coverage stands out as one of the most serious environmental problems in different parts of the world, and in Brazil this is no exception. The Sideroxylon obtusifolium (Roem. & Schult.) T.D.Penn., belongs to the Sapotaceae Juss. Family, is an important species that is currently threatened in the Caatinga biome, which despite that fact, there is lack of studies focused in this species, especially regarding the phenology, natural regeneration and seedling production. Therefore, the objective of this study was to evaluate the different phenological stages, the soil seed bank, the influence of different substrates and shade levels on the production of S. obtusifolium seedlings. Four experiments were carried out: I - phenology: carried out in the rural area of Boa Vista - PB, with 26 individuals of the species, evaluated every 15 days for 30 months. phenological stages of budding, flowering, fruitification and senescence of the species were correlated with the climatic data of the municipality (rainfall, temperature and relative humidity); II - seed bank: carried out with two soil samples collected from the same area where the phenological evaluations were carried out, evaluating the floristic composition, density (relative and absolute), diversity of Shannon- Weaver (H ') and Pielou equability (e'); III - production of S. obtusifolium seedlings in different substrates: carried out in a protected environment of the Departamento de Fitotecnia e Ciências Ambientais do Centro de Ciências Agrárias da Universidade Federal da Paraíba (DFCA-CCA/UFPB), where were evaluated 13 substrates formulated from washed sand, bovine manure, subsoil, kaolin waste and Basaplant® (commercial substrate); IV - growth of S. obtusifolium seedlings at different levels of shade: at the forest nursery of the Laboratório de Ecologia Vegetal (CCA-UFPB), using the following shading levels: 0, 30, 50 and 70% shade. The variables evaluated in the production of seedlings were: height, stem diameter, height/stem diameter ratio, absolute height growth rate, absolute diameter growth rate, number of branches, root length, height/ root length ratio, shoot dry matter (stem, branches, leaves), root dry matter, total dry matter, shoot and root dry matter ratio (stem, branches, leaves), Dickson quality index and percentage of leaves and roots. There was no significant effect between the phenological characteristics evaluated and the environmental variables (temperature, humidity), with a strong oscillation in intensity and in the activity index. During ix the evaluation periods, senescence occurred in all individuals of S. obtusifolium. The peak of the intensity of the phenological stages of budding, floral bud, flowering and fruitification was less than 60%. In the seed bank of the studied area, 58 species were identified, distributed in 49 genera and 23 families, with predominance of herbaceous species, and belonging to the Fabaceae family. The S. obtusifolium species was not found in any of the soil samples. For the production of seedlings, kaolin waste and bovine manure are indicated, while pure subsoil associated with washed sand is not recommended. The production of seedlings of the species can be carried out under full sun or with up to 15% of shading, without significant losses in the seedlings vigor.

Pineapple farming is an economically viable and socially relevant activity in the exploration regions. However, its success depends on nutritional management with adequate K / N ratios. The objective of this study was to evaluate the effects of different K/N ratios, applied via soil and leaf on nutritional status, phenology of leaf "D" and infructescence, production and quality of pineapple cv. Infructescence, in the State of Paraíba. The experiment was installed in Quartzarênico Neosol, in the municipality of Alhandra-PB. In order to evaluate soil fertility, plant nutrition, leaf "D" growth and infructescence development, the experimental design was a randomized complete block design, with four replications and ten treatments, in a factorial scheme (2x4 + 2). The factors were two levels of N (585,9 and 498,0 kg of N ha-1) and four K/N ratios (1.3: 1, 2: 1, 2.5: 1 and 3: 1) , and two treatments (50% potassium via soil and 50% via leaf). The experimental unit consisted of five rows, each row with 12 plants, with a total of 60 plants per experimental unit. Acclimated seedlings of the Imperial pineapple cultivar from in vitro propagation, planted in pits, were used in the simple rows system, spacing 0,30 x 0,90 m.

The collection of fruits and seeds for human and animal feeding has been practiced for centuries in the Caatinga northeastern. In the Paraiba Caatinga, it is common to find small communities that have joined together in a cooperative, to explore nature's resource that is a source of income and maintenance of sustainable extractivism. In view of this, the present study aims to diagnose the perception of the farmers of the. Community on the importance of umbuzeiro (Spondias tuberosa A. Câmara). Initially visits were made in the community with the intention of exposing the idea and performing. The research was conducted during the period from March 2016 to May 2016. We applied structured questionnaires, previously made with the objective of involving and extracting the maximum information from the whole community. With the data in hand, figures were drawn which demonstrate the perception of cooperative farmers about the extraction of umbu. Incomplete first grade (47%), followed by high school (40%). As regards the process of extraction of umbu by Community producers, a number of uses may be indicated, with the main destinations being the pulp industry (34%), family consumption (33%), animal feed (19%) and direct sales (14%). Regarding marketing, when the sale was made, the bag price of 3.0 kg varied between R$ 2,00 and R$ 2,50, and 62% of the producers consulted stated that they sell at a price of R$ 2,00, while 31% sell at R$ 2,50 and 7% at R$ 2,50. Of the producers that produce one hectare, 100% have another activity to supplement the income, among which: rice (85%), livestock (85%), handicrafts (7.5%) and others (7.5%). The relevant contribution of the research to stimulate the participation of the local community within a process with sustainable bases, considering that it, besides knowing the peculiarities of the environment in which it lives, must accept the exploration of umbu as a sustainable activity, so that Negative impacts are minimized and potential positive aspects.

The use of plant mixtures in inter-rows of fruit trees associated with non soil turnover can contribute to the diversity of epigeic fauna, nutrient cycling, and soil carbon sequestration in irrigated environments under semi-arid conditions. The aim of this study was to evaluate the diversity of soil epigeic fauna, the rate of decomposition of biomass and release of nutrients from different plant mixtures, and the carbon stock as indicative of the quality and evolution of different patterns of mango crop agroecosystems (Mangifera indica L.), an experiment was carried out in a randomized complete block design, with four replications, in split plots. The plots were two soil management systems, no-tillage (NT) and tillage (T) and three plant mixtures, PM1 - 75% legumes + 25% grasses and oilseeds, PM2 - 25% legumes + 75% grasses and oilseeds, and SV - spontaneous vegetation. The study of the biomass decomposition and nutrient release were conducted using the litter bag method and the epigeic fauna in Provid type traps, adding to the experimental design, in both of the studies, time factor of collect (0, 8, 15, 30, 45, 60, 90, 120, 150, 180, 210, 240, 270 and 315 days) as sub-subplot. Additionally, as a reference for the study of the soil epigeic fauna was used an area under vegetation of Caatinga. In the study of C stock, local sampling factor (in and inter-rows of mango cultivation) was added to the experimental design as subplots, and two reference areas, a preserved Caatinga area, used under the same type of soil, and soil condition prior to the installation of the study. The plant mixture with a higher proportion of legumes (PM1) had the highest rates of decomposition and release of P and K over time, followed by PM2 (25% legumes + 75% grasses and oilseeds) and spontaneous vegetation (SV). Nonetheless, PM1 presented greater accumulation of dry matter compared to SV, its use in agroecosystems in the semi-arid region allows a greater cycling of nutrients over time. The soil tillage system had a negative effect on the diversity of the epigeic fauna, providing the lowest values of abundance, richness, and Shannon indices and Pielou equability. The plant mixture of PM1 and PM2 provided greater richness to the community of the epigeic fauna and higher diversity indexes of Shannon compared to SV, indicating the potential use of these plant mixtures for the increase of soil biodiversity in agroecosystems of fruit trees in semi-arid conditions. There was an increase in the C stock in most of the soil layers, both for the row and inter-rows of the mango crop when compared to the values found at the beginning of the experiment. However, none of the evaluated systems presented higher C stock than the area under Caatinga. The use of the PM1 plant mixture in the inter-row increases the C stock in the mango cultivated in the row. Regardless of the soil preparation system, the agroecosystem design using PM1 is a promising system to increase the total soil stock and fractions of carbon and to increase soil carbon management index in the 0-40 layer cm. Thus, the no-tillage system, associated with the use of plant mixtures in the mango inter-row, is recommended as a sustainable soil management system.