TCC - Bacharelado em Agronomia (UAST)
URI permanente para esta coleçãohttps://arandu.ufrpe.br/handle/123456789/2928
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Resultados da Pesquisa
Item Variabilidade espacial dos atributos químicos em um cambissolo háplico ta eutrófico típico(2020-11-04) Santos, Wagner Martins dos; Bezerra, Alan Cezar; http://lattes.cnpq.br/3690303625468223; http://lattes.cnpq.br/4506292783833761Innovative technologies, such as the expansion of no-till, integrated production systems, and crop biotechnology, are becoming increasingly important in our country, showing the importance of developing techniques that allow more efficient use of resources. That said, the spatial variability of chemical soil attributes was evaluated in an experimental area at the Federal Rural University of Pernambuco / Serra Talhada Academic Unit (UFRPE / UAST) in soil classified as Typical Cambisolo Háplico Ta Eutrófico Typico, to analyze the spatial behavior of the variables: Phosphorus (P), pH, Potassium (K), Sodium (Na), Aluminum (Al), Calcium (Ca), Magnesium (Mg), Organic Matter (MO), Potential Acidity (H + Al), Sum Bases (SB) and Cation Exchange Capacity (CTC) at pH 7.0. The data were collected in a sample grid divided into 4 plots containing 16 subplots each of 3.75x3m, resulting in 128 simple samples divided into depths from 0 to 10 cm and 10 to 20 cm. The data were analyzed using descriptive and geostatistical statistics using spatial dependence analysis and adjustment of semivariograms using the free software R version 3.5.1. Most of the evaluated attributes had an average coefficient of variation (CV) with the highest CV value found for variable K, 102.79 at the depth of 0-20, and the lowest value for pH, 3.58. Most of the attributes showed a pure nugget effect, which may be the result of measurement errors or because the spacing is greater than necessary to identify the spatial dependence, thus being adjusted to the linear model, among the variables that fit the models, the majority presented weak spatial dependence with the variable SB presenting better spatial dependence.Item Fracionamento físico do carbono no solo em função da irrigação e adubação nitrogenada(2019) Espindola, Vitor Augusto Silva; Oliveira, Alexandre Campelo de; http://lattes.cnpq.br/8164135937542569; http://lattes.cnpq.br/4334208597286391Variations in the carbon stock are not individual risk factors, these are natural and anthropic, as the natural islands are associated as characteristics of the region, such as climate and temperature of the region, the characteristics of textures, soil C concentrations. The anthropological factor is related to the performance standards of a strategy of changing characteristics of a business that is not before, such as the process of doing its initial business, the struggle for machines and leaching through an irrigation action. Such classes can be occasioned in reducing C concentrations in soil as a problem of soil quality, since this is a resource as a non-renewable resource. Because of this, a number of studies are focused on measuring stock concentrations through practical actions in a way that can lead to loss of inventory. From the total zero hours, from the total hours, from the zero. in the semi-arid region of Pernambuco. The experiment was conducted at the Serra Talhada Academic Unit (UAST) under field conditions, with a randomized block design, evaluation of forage sorghum and millet in consecutive cycles, applied to 4 irrigation slides (28, 36, 44 and 52 %). and 4 levels of nitrogen fertilization (0, 100, 200, 300 kg ha-1). In terms of results, the analysis of the needs of all cycles was made during the first year, showing the potential of applying the local experimental impact in its dynamics. There is a relationship between the COAM and the nitrogen so that an increase of its bases by the provision of soil N alone in the first cycle. There is a reduction in COP concentrations as a first time when doing a man's action when he does not interfere in the other. So, a dynamics of C not having alone in contact with the fact of being under the effect of nitrogen fertilization and irrigation, does not offer significant effects of the interaction between the two on TOC, but rather the action of both managements isolated form. Studies on the higher depths may also be needed because of soil characteristics.Item Avaliação de métodos de estimativa da evapotranspiração de referência para a região do vale do São Francisco(2019) Silva, Maiara Tatiane Lima; Souza, Luciana Sandra Bastos de; http://lattes.cnpq.br/1186468548787818; http://lattes.cnpq.br/8455026363821368Information related to reference evapotranspiration (ET0) is very important for irrigation management, especially in regions dependent on agriculture. To determine it several methods can be used, among which are the alternative methods, which are used of few data. This work hypothesized that new models for estimating evapotranspiration and those developed locally better represent ET0 of the Submedio São Francisco. In order to investigate the adequacy of historical and contemporary models for the estimation of ET0 and to develop a new method for its estimation in the region of the Vale do São Francisco. The work was carried out in Juazeiro, Ba, using data referring to a meteorological station belonging to EMBRAPA Semiarid, using data of temperature, relative humidity, wind speed, precipitation and global solar radiation, for the year 2017 and 2018, and for validation of the poposed odel, data from 2016. The data were used in the determination of evapotranspiration using the Penman-Monteith methods and the alternative ones, subdivided into two groups: historical,those developed before theyear 2000with the methods of Hargreaves-Samani, Camargo, Jensen-Haise, Makkink, Solar radiation FAO 24 and Benevides-Lopes, and contemporary, developed afterthe year 2000, with Irmak, Castaneda-Rao, Moretti-Jerszurki-Silva, Silva-Souza, additionally, the information was used in the development of a simple model for ET0 estimation. This information was compared using the indices for which Pearson's correlation coefficient (r), coefficient of determination (r²) and Willmont's concordance index were considered. Based on these results, it was possible to observe that contemporary methods, with the exception of Moretti-Jerszurki-Silva, tended to reduce errors in the estimation of reference evapotranspiration.The most appropriate method to estimate ET0 was the FAO-24 Solar Radiation. The alternative model obtained in the present work was based only on temperature and humidity data and was classified as very good.Item Condicionadores do solo como potencializadores do crescimento de forrageiras na agricultura biossalina(2019) Leal, Larissa de Sá Gomes; Pessoa, Luiz Guilherme Medeiros; http://lattes.cnpq.br/1540664578909440; http://lattes.cnpq.br/8541410734100163The secondary salinization, resulting from inadequate soil management practices has grown substantially in recent yearsamong soil degradation processes in Brazilian semiarid region. Its evolution, without intervention, tends to make agricultural production unviable, followed by desertification and abandonment of salinized areas. In view of its social, environmental and economic impacts, it is necessary to develop remediation techniques for such degraded soils. Thus, this work aimed to evaluate the performance of three forage species adapted to the semiarid and the potential of mixing soil conditioners, as a strategy for the use of degraded areas by salts. The experiment was conducted in a completely randomized design, in a 3x4 factorial arrangement and four replications, the first factor was the forage species and the second one were the soil conditioners mixture. For this, a Cambisol was used, classified as a saline-sodic soil. The soilsamplewas collected in the upper layer (0-20 cm), sieved and standardized, for assembly of the experiment and for chemical characterization. Then, it was packed in polyethylene vessels with 14 kg of soil, where they received the mixtures of soil conditioners: T1: control (without soil conditioner), T2: gypsum + organic matter, T3: elemental sulfur + organic matter, T4: gypsum + organic matter + elemental sulfur. One month after soil conditioners application, seedlings of sorghum, gliricidia and atriplex were transplanted. Irrigation was performed on alternate days, with an irrigation level equivalent to 40% of field capacity. The applied gypsum rate was 16.9 t ha-1, the sulfur was 3.97 tha-1and the organic matter was 30 t ha-1. At 60 days after transplanting the seedlings were collected and fractionated in roots, stems and leaves to obtain their fresh, dry and total weights; allocation of biomass, sodium, chloride and potassium in plant compartments; electrical conductivity of the saturation extract, pH, sodium and potassium content, and exchangeable sodium percentage in the soil after the experiment. Also the sodium absorption efficiency and transferwere determined. For the conditions of studied salinity, Atriplex is the most suitable for forage production and recovery of this soil. The conditioners did not influence the biomass production of the plants, however, their use associated to the halophyte cultivation contributed to the improvement of the chemical attributes of soil, promoting a greater reduction of the EC, ESP, and sodium, chlorine and potassium contentsof the soil, compared to the crop in their absence. The combination of gypsum + organic matter allowed greater accumulation of sodium, potassium and chlorine in the leaves, as well as a greaterreduction of EC and ESP. Therefore, for the production of forage and remediation of the area whose soil was collected for this research, it is recommended the use of Atriplex nummulariaassociated to the application of gypsum + organic matter to accelerate the remediation process.Item Alterações e Reclassificação de Solos do Sertão Pernambucano(2019) Nunes, Juvêncio Henrique Lima; Freitas, Diana Ferreira de; http://lattes.cnpq.br/4680121486632993; http://lattes.cnpq.br/1780003962422107Soils are the result of the action of factors and processes that operate at different intensities and cause various changes in their characteristics, so a systematic study of these changes is important to understand soil genesis. Soil surveys are an inventory of their characteristics, as well as their geographic distribution within the area and their taxonomic classification. In the Sertão of Pernambuco, the basic studies of soils, carried out by the Ministry of Agriculture(MA), began in 1957. This survey aimed at identifying and studying the soils existing in the State, however new nomenclatures for Brazilian soils were adopted and published by Embrapa through the edition of the Brazilian Soil Classification System (SiBCS), the last version of which was published in 2018, so the objective of this research was to identify alterations and to reclassify soils located in the backlands of Pernambuco described in the Exploratory Survey -State Soil Reconnaissance of Pernambuco, using the updated Brazilian Soil Classification System. Three profiles described in the above survey were selected for analysis. A comparison of the information described in the survey with those obtained in the field was carried out, as well as an evaluation of the relationship between the physical and chemical characteristics of the soils surveyed with the source materials of these soils (rocks) collected in the field together with the samples of ground. For the physical (granulometry) and chemical analysis of the soils, the Embrapa methodologies were adopted and in parallel the minimololites were made with the soils studied. It was verified that the small changes are due to the variation of the original material, to the handling, the relief and the location of the final profiles not to be exactly the same as the initial profiles. In spite of the variation, the three final soils met the prerequisites to remain in the same Order of the initial soils, classified as NEOSSOLO QUARTZARENICO, LUVISSOLO and LATOSOLO.Item Avaliação da biomassa de plantas de goiabeira cv. paluma tratadas com produtos biológicos em solos conducentes à Meloidogyne spp(2019) Souza, Daniel Ericles dos Anjos; Albuquerque, Neilza Reis Castro de; http://lattes.cnpq.br/5706869625614564; http://lattes.cnpq.br/1272248073820183The cultivation of guava (Psidium guajavaL.) is widespread throughout the world, [being a kind of reality with high economic and market potential, which, with this, still presents great possibilities of expansion around the world.]In Brazil, São Paulo and Pernambuco lead production, accounting for 36.3% and 31%, accounting for 67.3% of national production. However,diseases in guavain Brazil directly influence the productivityof this culture. Among the diseases, meloidoginose is one of the main causes of damage to guava producers. In this context, the work was evaluated as the aerial biomass problem and root portion of guava seedlings of cv. Paloma for two soil conditions leading to the three biological products. Soils were grown in areas of guiding guava in nematodes under two management, soil 1 with remnant characteristics and soil 2 in full culture, deposited in 10 L volume vessels that are projected with three products formulated with Bacilluspumilus, B. subtilis, B. amyloliquefaciens, Azospirillum sp., Pseudomonas sp., Rhizobium sp., Saccharomyces sp., B. licheniformis. With the end of the 90 days, with the measurement of the first planes, the fresh mass and the dry and dry mass, the diameter of the stem, pair of leaves, number of leaves and number of branches. The experiment was carried out without a randomized complete block design (DBC) with eighttreatments and four replications where the treatments, arranged in a factorial scheme 4 x 2. The results were those biological products tested in this experiment, not having as parameter the biomass differences in question relation to the two types of cultivated soils.