Navegando por Assunto "Solos"

Agora exibindo 1 - 20 de 33

Acompanhamento e execução de projeto de irrigação: Assistec Rural
(2019-07-18) Guido Filho, João Inocêncio; Andrade, Antonio Ricardo Santos de; http://lattes.cnpq.br/0734786456159447; http://lattes.cnpq.br/3141020348584540
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/1780003962422107
Soils 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.
Análise da capacidade da troca de cátions (CTC) em fertilizantes orgânicos
(2021) Ribeiro, Kátia Elisabete Silva; Mélo, Ralini Ferreira de; http://lattes.cnpq.br/4296426234246190; http://lattes.cnpq.br/1681721079783613
Análise temporal do uso e ocupação do solo da Bacia do Médio Jaguaribe - CE
(2018) Castro, José Artur Borges de; Duarte, Simone Mirtes Araújo; http://lattes.cnpq.br/5876968040869585
The hydrographic region of the Middle Jaguaribe is an area of vital importance to the state of Ceará, benefiting the whole region around it with fish farming, irrigation, water transposition and, as a consequence of the dam, regulates the flow of the Jaguaribe River. Its construction began in 1995 and concluded in 2003. In recent years, there has been a reduction in precipitation, which means that reservoirs are not recharged, reducing local economic dynamics. Following this reasoning, the objective of this work is to make a temporal analysis of the use and occupation of the soil of the Jaguaribe mid basin during a period of nine years, between 2006 and 2015, using LANDSAT 5 ETM satellite images in the year 2006 and LANDSAT 8 OLI for 2015, provided by the United States Geological Survey (USGS), the images used in the process were recorded during the dry period of the region, and using GIS applications it is possible to quantify the exposed soil, vegetation, agricultural activities and urban areas , and estimating morphometric variables. The results show a visible reduction of vegetation and soil growth, caused by the reduction of the levels of the small reservoirs and by anthropic activities, and the morphometric results indicate that the basin is not conducive to flooding.
Aspectos ambientais dos tabuleiros costeiros entre Recife e João Pessoa
(1980) Falcão, Marlene Ferreira Lima; Lima, Clóvis Coêlho de Andrade
Os tabuleiros da costa oriental nordestina constituem uma feição morfológica como glacis de erosão e de acumulação da superfície geral da região. São superfícies planas ou ligeiramente onduladas, cortadas por vales fluviais, com altitudes variando entre 50 e 100 metros. Estendem-se sobre sedimentos cretáceos e terciários (glacis de erosão) e, em pequena parte sobre sedimentos quaternários (glacis de acumulação). Sua idade é quaternária inferior. Os solos destes tabuleiros são geralmente arenosos, latossolos pertencentes à unidade pedológica Utinga; eles suportam uma vegetação natural de florestas tropicais subperenifóleas, na sua maior parte destruída e substituída por cerrados.
Atividades Práticas Desenvolvidas em Agroindústria do Setor Sucroalcooleiro do Estado de Pernambuco
(2019) Lima, Max Henrique Gonçalves de; Almeida, Gledson Luiz Pontes de; http://lattes.cnpq.br/2328849810614673; http://lattes.cnpq.br/7622040913641513
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/1272248073820183
The 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.
Avaliação da condutividade hidráulica de três solos do Agreste de Pernambuco sob salinização pela água de irrigação
(2020) Paiva, Rodrigo Francisco do Nascimento; Freire, Maria Betânia Galvão dos Santos; http://lattes.cnpq.br/2636653493262436; http://lattes.cnpq.br/5834312459854986
Avaliação da Drenabilidade de Solo em Área Degradada por Encharcamento no Campus Sede da UFRPE
(2019) Silva, Jéssica Bárbara da; Silva, Vicente de Paulo; http://lattes.cnpq.br/3590522665927472; http://lattes.cnpq.br/8023168590724601
Avaliação da qualidade física do solo de uma área de produção de cana-de-açúcar
(2016) Oliveira, Pedro Henrique Santos de; Dantas, Mara Suyane Marques; http://lattes.cnpq.br/9205576230995806; http://lattes.cnpq.br/2830483304132818
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/8455026363821368
Information 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.
Avaliação dos impactos ambientais negativos da disposição da vinhaça da cana-de-açúcar em solos agrícolas no Brasil: uma revisão bibliográfica sobre os efeitos no solo e nos recursos hídricos
(2025-08-07) Santana, Patrícia Kelly Sousa; Barboza, Marianne de Lima; http://lattes.cnpq.br/8665242735385886; http://lattes.cnpq.br/5632774803304365
Este trabalho tem como objetivo avaliar, por meio de revisão bibliográfica, os principais impactos ambientais decorrentes da disposição da vinhaça da cana-de-açúcar em solos agrícolas no Brasil, com ênfase nos efeitos negativos sobre a qualidade do solo e dos recursos hídricos. Trata-se de uma pesquisa qualitativa, com abordagem exploratória. Foram priorizadas fontes publicadas nos últimos dez anos, com destaque para pesquisas mais recentes que abordam os impactos da vinhaça no solo e nos recursos hídricos. No entanto, para o levantamento dos marcos legais e normativos aplicáveis, foi necessário ampliar o recorte temporal da pesquisa, em razão da escassez de legislações atualizadas e específicas sobre a temática. Essa limitação evidencia lacunas no arcabouço legal e reforça a importância de revisões periódicas nas normas vigentes. Os resultados indicam que, embora a vinhaça seja um subproduto rico em nutrientes e amplamente utilizado na fertirrigação, sua aplicação sem critérios técnicos pode provocar salinização, compactação, alteração do pH, desequilíbrios microbiológicos, além da contaminação de corpos hídricos por nutrientes e matéria orgânica. Os riscos ambientais incluem a lixiviação de nitratos e fosfatos, a eutrofização de cursos d’água e a perda da biodiversidade. No entanto, diversas alternativas sustentáveis têm sido adotadas, como a digestão anaeróbia para produção de biogás e o uso da vinhaça como substrato para a obtenção de compostos de alto valor agregado, a exemplo da produção do ácido capróico. Conclui-se que o uso da vinhaça deve estar atrelado ao cumprimento de diretrizes técnicas, fortalecimento da fiscalização, monitoramento ambiental constante, inovação tecnológica e atualização das normas ambientais, visando compatibilizar produtividade agrícola e conservação ambiental.
Cobre em solos do Agreste de Pernambuco
(1978) Dantas, Humberto da Silveira; Horomitz, Arão; Leite, José Pereira; Carneiro, Maria Olímpia M.
Na zona fisiográfica do Agreste, Estado de Pernambuco, foram coletados perfis dos solos típicos da região. Neles foram realizadas análises, por absorção atômica, de Cu nos diversos horizontes. Os teores de Cu solúvel (EDTA 0,05M) variam de 0.02 a 4,25 ppm, em DTPA-TEA de 0,10 a 1,30 ppm, e em HC1 0,1N de 0,0 a 3,75 ppm.
Compactação do solo no crescimento e desenvolvimento inicial da cana-de-açúcar, quando submetidos a diferentes tráfegos e níveis de energia
(2019) Mendonça, Ewerton Yuri dos Santos; Oliveira, Veronildo Souza de; http://lattes.cnpq.br/2304011890078236; http://lattes.cnpq.br/2010812483113839
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/8541410734100163
The 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.
Contribuição para o cálculo automático do balanço hídrico segundo Thornthwaite & Mather
(1980) Cavalcanti, Antônio Faustino
Contribuição para o cálculo automático do balanço hídrico segundo THORNTHWAITE & MATHER.
Distribuição espacial da fauna edáfica em topossequência sobre um remanescente de floresta ombrófila densa em Pernambuco
(2024-09-27) Santana, Augusto Guilherme Caldas de; Lima, Tarcísio Viana de; http://lattes.cnpq.br/0814281560377954
Soil is considered a fundamental component as it induces the dynamic processes that shape the growth and development of the biological heritage of different terrestrial ecosystems. This biotic structure is represented by plants, animals, microorganisms, and soil fauna. In the specific case of soil fauna, there is significant morphological and functional diversity among these organisms, which are classified according to their respective sizes or body diameters and the ecological roles they play in the soil. Therefore, the objective of this work was to diagnose and evaluate the spatial distribution of soil fauna over a remnant of Dense Ombrophilous Forest, according to its toposequential exposure. The studies were conducted at Dois Irmãos State Park (Pedi), Recife-PE, at two moments: the rainy season (August) and the dry season (January). To carry out the activities, the vegetational cover was divided into three thirds (lower, middle, and upper), where simple samples of leaf litter and soil were collected to a depth of 5 cm. These materials were sent to the Forest Defense Laboratory at the Federal Rural University of Pernambuco (UFRPE) for manual sorting, initially of the macrofauna and then of the mesofauna, using Berlese-Tüllgren funnels to evaluate ecological structural characteristics. For data analysis, the ecological indices of Shannon-Weaver, Pielou, and Simpson were applied, with results showing a higher abundance of individuals in the lower third and in the leaf litter layer during the rainy season, with a predominance of the order Hymenoptera, but greater species richness in the upper third, indicating higher diversity in the leaf litter of this section. The dry season had more individuals than the rainy season, suggesting that the action of rain influences density in the different thirds of the toposequence, with greater accumulation in the lower third due to its lower altitude. The ecological indices indicated that the highest diversity is concentrated in the leaf litter of the upper third, as observed in the rainy season. Microclimatic data showed higher temperatures in the upper third, providing further support for the greater diversity present there. Hymenoptera was the taxonomic group with the highest presence in both periods, followed by Blattodea, Araneae, Chilopoda, and Coleoptera. The cluster analysis demonstrated that the dry season had greater similarity among the thirds, considering leaf litter and soil, than the rainy season.
Ecologia da microfauna do solo Araucarial
(1979) Lima, Vilma de Oliveira Almeida; Jakobi, Hans
São dadas a conhecer algumas informações sobre a abundância da população da microfauna do solo Araucarial no "Capão da Imbuia", Curitiba, Paraná. As coletas foram realizadas duas vezes ao mês, em quadrados de 10m, durante o período de abril a dezembro de 1972, tendo os resultados obtidos mostrado uma predominância da classe Insecta.
EMBRAPA Solos - UEP/RECIFE - Projeto: recuperação de parreiras frente a mudanças climáticas na Zona da Mata de Pernambuco
(2019) Araújo Júnior, Romero José Galvão de; Musser, Rosimar dos Santos; http://lattes.cnpq.br/6081373885915842; http://lattes.cnpq.br/9281789871555418
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/4334208597286391
Variations 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.