Navegando por Assunto "Biomassa vegetal"

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Avaliação da biomassa de plantas de cebola cv. 1205 e cv. Serengeti em solos conducentes à nematose tratados com produtos biológicos
(2019) Soares, Maurício Meira; Albuquerque, Neilza Reis Castro de; http://lattes.cnpq.br/3614090907577987
The onion Allium cepa highlights-like vegetable important socioeconomic for the country, the predominance of culture medium, small producers and the family nature, generating about 250 thousand direct jobs in production. How the culture has its phytopatological problems, the decision has been made for the economics made from the production of the largest production in production. In order to control the problems, the tests are being studied and the biological control of the main focus is the use of nematological bacteria and fungi that promote the protection of the roots of the growth, besides promoting an increase in the biomass of the plants. The use of the microorganisms may have had an important relation with the potential of soil management, cleaning of the ecosystem of systems and the suppressive. The objective of this study was to evaluate the biomass of hybrid 1205 and Serengeti crop plants grown on soils with three biological products. Three bioproducts will be tested: product 1 containing bacteria: Bacillus pumilus 1.0x10¹¹ (endospores / L), Bacillus subtilis1.0x10¹¹ (endospores / L) and Bacillus amyloliquefaciens 1.0x10¹¹ (endospores / L), Product 2 have the bacteria Azospirillum sp. 1.0x109 (UFC / dose), Pseudomonas sp. 1.0x109 (CFU / dose), Rhizobium sp. 1.0x109 (CFU / dose) and the fungus Saccharomyces sp. 1.0x109 (CFU / dose) and product 3 is a base of Bacillus subtilis1.0x10¹¹ (CFU / g) and Bacillus licheniformis 1.0x10¹¹ (CFU / g). After 60 days, morphological variables were identified as buyer of aerial and root parts, diameter of pseudocaule and bulb, weight of fresh matter and dry material and finally determined the index of galls formed not root system. The results obtained showed that the biomass concentrations between the plants cultivated in soils and with the bioproducts were concluded in comparison with the biomass among the hybrid cultivars of onion cv. 1205 and cv. Serengeti.
Biomassa, densidade e composição do Zooplancton da Baia de Tamandaré, PE
(1986) Barreto, Maria Salete de Santana
Foram realizados estudos sobre a biomassa, densidade e composição do zooplancton da Baía de Tamandaré, no litoral Sul do estado de Pernambuco. Constou da análise de 108 amostras; coletadas com rede 10Qum de malha, em cinco pontos distintos, obedecendo ao ritmo das marés (vazante e enchente), em arrastos horizontais na superfície da água. Os resultados apresentaram a maré vazante com os valores mais altos de biomassa, densidade e "standing-stock". Qualitativa e quantitativamente os Copepoda foram os organismos dominantes. Destacaram-se ainda Appendlcularia, Chaetognatha e Tintinnida. O meroplancton com grande variação representou-se por larvas de invertebrados e algumas larvas e ovos de Pisces.
Estoque de carbono em fragmento florestal na Zona da Mata Sul do estado de Pernambuco
(2021-02-25) Mossio, Lucca Silveira Mousinho; Freire, Maria Betânia Galvão dos Santos; Lima, Tarcísio Viana de; http://lattes.cnpq.br/0814281560377954; http://lattes.cnpq.br/2636653493262436; http://lattes.cnpq.br/7141821256778001
Native forests have a strong presence in climatic change mitigation on the planet, mainly on carbon sequestration. However, Atlantic Forest suffered a historical fragmentation process linked to exploration, resulting in carbon stock modification of this ecosystem. Thus, the objective of this research was to evaluate the carbon stocks in soil and vegetation of an Atlantic Forest fragment in Pernambuco, Brazil, assigning a comparative relation for edge and forest areas. The study was performed in an area from Usina Trapiche, in Sirinhaém, Pernambuco, in an Atlantic Forest fragment. Were evaluated the carbon stocks, soil organic carbon, soil labile carbon, tree and litter biomass in edge and forest situations, in plots of 250 m2. In each plot, soil samples were collected in three different depths (0-10, 10-20 and 20-40 cm), also collecting 0,25 m2 of litter in each plot and data from a phytosociological study were used to estimate the above-ground plant biomass. For statistical analysis, were performed F test and Tukey test, at 5% probability, after data treatment for normality test and homoscedasticity, on SAS and Sisvar software. There was significant difference in contents of soil organic carbon (S.O.C) and carbon stocks of soil in situation of edge and forest of the fragment, accepting the hypothesis of edge effect caused by fragmentation. However, this effect was not sufficient to have a difference in labile carbon. Was observed a major content and stock in the superficial layer of soil (0-10 cm), which is common in forest environments, mainly for the larger deposition of organic matter in surface. The above-ground biomass and litter biomass presented significant difference between edge and forest, possibly for being a heterogeneous environment and for edge effect existence in the fragment. Even with fragmentation, was observed that soil reservoir keeps stocking more carbon than vegetation reservoir, being the disturbance, up to the limits established by this study, less enough to alter the carbon storage and ecosystems services in a conserved area. So, understand the importance of the knowledge and preservation of native forests for the environment functioning as a carbon tank.
Influência da taxa de aquecimento na produção do carvão da madeira de Eucalyptus spp
(2019-07-12) Interaminense, Pedro Paulo Barros; Braz, Rafael Leite; http://lattes.cnpq.br/7332493832361305; http://lattes.cnpq.br/7774231489365848
This work aims to evaluate two carbonization marches and the fresh material collected in a Eucalyptus stand, located in Araripina - PE, in the northeastern backlands, using several clones who being homogenized to evaluate the practices. The Eucalyptus' samples were transformed into chips and underwent a drying process in an oven regulated at 65ºC ± 5ºC for 48-72 hours, until they reached constant weight, obtaining the moisture content and bulk density. Part of the biomass was intended for immediate chemical analysis and to estimate the superior calorific value, and the rest was used to the carbonization process. The gravimetric yield, immediate chemical analysis, and estimation of the superior calorific value of the charcoal produced were determined. Regarding the immediate chemistry analysis, it was possible to observe the reduction of volatile material contents and increase of fixed carbon after the carbonization process. The estimated calorific value was 4357.35 kcal.kg-1 for the fresh sample and 7220.28 kcal.kg-1 for the first march and the second march, related to the charcoal, was 7265.15 kcal.kg-1. Thereby, the second gear is better to use as charcoal because it has a shorter carbonization time and it has the same quality when compared to the first gear for the variables used.
Relatório final das atividades do Estágio Supervisionado Obrigatório
(2019) Neves, Lucas Humberto Barbosa; Freire, Fernando José; http://lattes.cnpq.br/8371992516325399; http://lattes.cnpq.br/9122308664443978
Rendimento gravimétrico e análise imediata do carvão vegetal produzido em um protótipo de forno metálico
(2019-12-11) Almeida, Drielly Camilla Leal de; Braz, Rafael Leite; http://lattes.cnpq.br/7332493832361305; http://lattes.cnpq.br/8868900725139080
Construction waste that is of wood plant origin can and should be reused as raw material for the production of charcoal for domestic use. These forest residues, which are used for power generation, can generate income, and it is also an environmentally sound practice that adds value to activities of little relevance. Carbonization is a process of decomposition of wood that occurs by increasing the temperature resulting in a solid material that is charcoal. In carbonization the vegetable biomass releases water and generates some gases resulting from burning that are mostly lost in the atmosphere. It is important to study the material resulting from carbonization in the use of a better use in energy production. Where this study brings the carbonization efficiency of the plant material characterizing it according to the physical properties that were evaluated: the carbonization yield was 30.76%, wood moisture content averaged 13.19 and coal average. 7.91%, volatile materials 23.12%, ash content 1.61% and fixed carbon 75.27%.
Uso de metanálise para avaliação do potencial energético do uso da biomassa residual da extração da fibra de sisal
(2022-05-26) Silva, Tássia Cristina da; Freitas, Ana Dolores Santiago de; http://lattes.cnpq.br/6734173724110965; http://lattes.cnpq.br/1670545246505006
Agave, also called sisal, is a plant with origins in Mexico. In Brazil sisal is cultivated for the extraction of plant fiber; however, only 5% of the plant's weight is converted into fiber. The other 95% is converted into lignocellulosic residue. This residual biomass is not efficiently or economically utilized and is usually disposed of near the fiber extraction site. Considering this, the present work aimed to gather elements that can contribute to the sustainable development of the semi-arid region by providing information about the energy use of sisal residue. From the 48 papers analyzed it was possible to observe that sisal waste biomass possesses the characteristics of lignocellulosic biomass and that it is possible to convert this material through fermentation and pyrolysis into value-added products such as ethanol (biofuels) or biochar.