Navegando por Autor "Sobral, Júlia Kuklinsky"

Agora exibindo 1 - 6 de 6

Aplicação de inoculantes microbianos no manejo do feijão caupi em pequenas propriedades do Agreste Meridional
(Universidade Federal Rural de Pernambuco(UAG); Administração., 2011) Sobral, Júlia Kuklinsky
O feijão caupi, feijão-de-corda ou feijão macassar (Vigna unguiculata) é uma leguminosa tradicionalmente cultivada nas regiões Norte e Nordeste, é rica em proteínas, vitaminas e minerais, sendo capaz de tolerar estresse térmico e salino. Contudo, a produtividade desta cultura tem apresentado, historicamente, baixos índices. Tendo em vista a importância econômica do feijão caupi para a região do Agreste Meridional, a utilização de micro-organismos associados às plantas poderá ser uma alternativa para a sustentabilidade desta cultura. Portanto, a produtividade do feijão caupi poderia ser aumentada pelo uso de inoculantes de rizóbios eficientes, que supririam as necessidades de nitrogênio da planta. Diante do exposto, o presente projeto teve como objetivos: 1- Identificar pequenas propriedades rurais nos municípios de Garanhuns, Correntes e São João (Agreste Meridional de Pernambuco) que cultivem feijão caupi; 2- Analisar as condições de cultivo e possíveis problemas locais; 3- Esclarecer aos agricultores sobre a importância dos inoculantes microbianos para a produção vegetal; 4- Disponibilizar inoculantes para alguns agricultores e instruir sua aplicação; 5-Acompanhar todo o processo, do plantio à colheita, do cultivo do feijão visando a melhoria na produção agrícola.
Avaliação fenotípica de bactérias promotoras de crescimento vegetal
(2018-06-18) Teixeira, Marcos Ferreira; Sobral, Júlia Kuklinsky; Andreote, Fernando Dini; http://lattes.cnpq.br/5029852757109150; http://lattes.cnpq.br/8273377142633220; http://lattes.cnpq.br/6059663513649876
Bactérias solubilizadoras de fosfato inorgânico em solo preservado e antropizado da reserva biológica de Pedra Talhada - AL
(2019-12-10) Silva, José Maciel Mariano da; Sobral, Júlia Kuklinsky; http://lattes.cnpq.br/8273377142633220; http://lattes.cnpq.br/5273020384910756
In general, the soils of the tropical and humid regions are quite intemperate and acidic, presenting high maximum phosphorus adsorption capacity due to the high affinity of this element with iron, aluminum and calcium. Due to this, the application of phosphate fertilizers has low efficiency, around 10 to 25%. The microorganisms present in the soil have a role of extreme relevance in the availability of phosphorus for the plants. These microorganisms, mainly bacteria and fungi, present two mechanisms of phosphorus release for soil solution: solubilization reactions of inorganic phosphorus and mineralization of organic phosphorus. In this sense, the inoculation and maintenance of such beings is of paramount importance to replace or decrease the use of soluble phosphate fertilizers, improving the utilization of existing natural phosphates or added to the soil and application of soluble sources, thus, contributing to reduce dependence on imported fertilizers, the costs of agricultural production and also environmental impacts. Therefore, the objective of this work was to evaluate the inorganic phosphate-solubilizing bacterial community in soils under cover of agriculture, native forest and pasture of the Biological Reserve at Pedra Talhada located in Quebrangulo – AL. Isolation Bacterial was performed in a culture medium specific to inorganic phosphate solubilizing bacteria. The estimate of the total bacterial population was quantified by colony-forming units per gram of soil (UFC g -1 ). Isolates were selected to quantify their solubilization capacity. Every 3 days, the diameters of the colonies and solubilization halos were measured with the aid of a digital caliper to determine the Solubilization Index (IS), defined by the ratio between the average diameter of the solubilization halo and the average diameter of the colony bacterial. It was observed that the bacterial population density solubilizing of inorganic phosphate ranged from 2·106 (forest) to 1·109 (pasture) UFC g -1. There was no significant difference between the areas in relation to the total bacteria. However, there was a significant difference between the areas in relation to bacteria capable of solubilizing inorganic phosphate and non-solubilizers. The pasture area presented the largest bacterial population solubilizing of inorganic phosphate; while the forest area, smaller. Most isolates presented low solubilization capacity, only the isolate AL-26 stood out, presenting a mean ability to solubilize. It may later be further explored in experiments to promote plant growth.
Influência de fatores abióticos sobre o desenvolvimento de bactérias promotoras de crescimento vegetal dos gêneros Bacillus e Pantoea
(2019-02-05) Amorim, Alyson da Silva; Sobral, Júlia Kuklinsky; http://lattes.cnpq.br/8273377142633220; http://lattes.cnpq.br/9204041210789535
Incorrect handling during the application of most agricultural pesticides has been causing contamination in soils, groundwater, fauna and flora in Brazilian agroecosystems, in addition to increasing costs in agricultural production. The microbiota when subjected to dosages above the recommended level of certain pesticides suffers deleterious effects on their populations. And as a way to reduce input costs and the search for more sustainable agricultural production, the use of growth promoting bacteria and bioremediators is a biotechnological tool of great potential. Another factor that influences agricultural production is salinity. It is a term that qualifies a situation of excess soluble salts in the environment. This problem is one of the main causes of soil degradation in regions of arid and semi-arid climate, culminating in serious agricultural income. To contribute to the recovery of these degraded soils, plant growth promoting bacteria have been shown to be useful in the development of strategies to promote plant growth in saline soils. In view of the above, the present work had as objectives: i) to evaluate the tolerance to the methomyl pesticide and the potential biodegradation capacity of this pesticide by Bacillus plant growth promoting bacteria; and ii) to evaluate the production of exopolysaccharides under saline stress by plant growth promoting bacteria of the genus Pantoea. For the evaluation of pesticide tolerance, the Bacillus bacteria (UAGAT35 and UAGAT71). were inoculated in modified Minimal Mineral Medium (MMM), plus glucose as carbon source, followed by different concentrations of Methomyl. And to assess the potential for biodegradation, the carbon source has not been increased. In the experiment on salinity, five bacterial strains of the genus Pantoea were used (UAGC 906, UAGC 977, UAGC 858, UAGC 907 and UAGC 972), which were grown in solid medium with sucrose and added different concentrations of NaCl in each tr. For 10 days, the growth of the halo was measured with the aid of a pachymeter, being done five readings, in intervals of 48 hours. The two strains of the genus Bacillus demonstrated tolerance and biodegradation to methomyl insecticide, in their different concentrations. While the 5 bacterial strains of the genus Pantoea submitted to the different concentrations of NaCl presented production of Exopolysaccharides (EPS), showing their survival in environments under IX salt stress. Therefore, the evaluated bacteria presented potential for future studies aiming to promote growth in adverse environments.
MicroMundo: revelando a microbiologia do solo
(Universidade Federal Rural de Pernambuco (SEDE); Unidade Acadêmica de Garanhuns; Administração, 2011) Sobral, Júlia Kuklinsky
A exemplo do que já ocorre em muitos outros países, no Brasil, em especial as regiões Norte e Nordeste, há uma crescente necessidade de se educar e informar a população sobre questões relacionadas ao meio ambiente, como a microbiologia do solo. A exploração e o conhecimento dos mecanismos de interação micro organismos/planta/solo poderão ser utilizados em sistemas de manejo que busquem uma produção sustentável. Os micro-organismos podem promover o desenvolvimento vegetal por meio de processos indiretos e diretos, como a fixação biológica do nitrogênio. Neste contexto, o projeto “MicroMundo: Revelando a Microbiologia do Solo” teve como objetivo principal popularizar os conhecimentos da Microbiologia do Solo junto aos pequenos agricultores e pecuaristas, e população em geral do município de Garanhuns e seu em torno. Para tanto, foram realizadas as seguintes atividades: criação e edição de panfleto e boletim informativo abordando a importância e aplicação biotecnológica da Microbiota do Solo; realização das oficinas “Conhecendo o MicroMundo do Solos”e “Os Micro-organismos promovendo o crescimento vegetal”; divulgação do material didático junto a pequenos agricultores e pecuaristas, e população em geral.
Relatório de estágio curricular supervisionado obrigatório: Escola Superior de Agricultura “Luiz de Queiroz”/USP
(2018-06-18) Freitas, Caio César Gomes; Sobral, Júlia Kuklinsky; http://lattes.cnpq.br/8273377142633220; http://lattes.cnpq.br/5365151366789920