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Growth and Development of Bell Peppers Submitted to Fertilization with Biochar and Nitrogen

Agricultural Sciences 2019年第6期10卷 753-762页

作者： Washington Benevenuto de Lima Antonio Ramos Cavalcante benedito ferreira bonifácio André Alisson Rodrigues da Silva Luan Dantas de Oliveira Robson Fábio Alves de Souza Lúcia Helena Garófalo Chaves Department of Agricultural Engineering Federal University of Campina Grande(DEAG/UFCG)Campina GrandeBrazil

The experiment was carried out in the greenhouse of the DEAg/UFCG, Campina Grande (PB), Brazil, to evaluate the growth and development of the bell pepper subjected to fertilization with biochar and nitrogen. The experiment was conducted in pots under greenhouse conditions. Treatments were arranged in a completely randomized design, in 4 × 4 factorial scheme, relative to four doses of biochar (0;7;14 and 21 m3⋅ha−1) and four doses of nitrogen (0;40;80 and 120 kg⋅ha−1), with three replicates. Considering the analysis of growth of bell pepper plants during the first 45 DAS, is recommended the average dose of biochar of 19 m3⋅ha−1 on vegetable behavior. Under the conditions of the experiment, nitrogen favored only the absolute growth rate of plant height and the stem diameter.

关键词： Capsicum annuum L. Mineral Fertilizer Poultry Litter

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Prognostic Factors, Incidence and Management for Acute Variceal Bleeding in the Liver Transplantation Era

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Surgical Science 2011年第4期2卷 198-203页

作者： élio Rodrigues da Silva Ilka de Fátima Santana ferreira Boin Eurípedes Soares Filho Patrícia Alexsandra Nunes Barros Rodrgiues benedito Borges da Silva 不详

Background: Gastroesophageal varices are the most common and clinically important part of the portosys-temic collaterals due to their tendency to rupture and cause massive gastrointestinal bleeding. Objective The aim of this work was to evaluate retrospectively the incidence and the factors of prediction for the treatment of bleeding by gastroesophageal varices in the patients attended in the Emergency Room of the Hospital State University of Campinas (Brazil) from the last ten years. Methods: The method used here consisted of a descriptive and retrospective study carried out from the analyses of the medical records of 769 patients with upper gastrointestinal bleeding of which 220 were admitted because of upper gastrointestinal bleeding caused by gastroesophageal varices during this same period. Results: The results showed that the gastroe-sophageal varices appeared in 28.6% of the patients and they were the second most common cause of upper gastrointestinal bleeding. While evaluating factors such as age, sex and the common individual records, it was proved that this disease occurs mainly among people between the third and the fifth decade of life, with the great majority of cases occurring in the fourth decade (29.2%), of which 76.8% were male. There was an association of hematemesis and melena in the admission of 57.7% of the patients and even ascites was a common diagnosis in 48.2% of them. Most of these patients (40%) were classified as Child class B at admis-sion. The early endoscopic exam was used for 96.8% of them and showed the presence of F3 varices in 38.5%, CB varices in 25.1% and RCS varices in 12.6%. Most of these varices (41.5%) were situated in the distal third of the esophagus. The most used pharmacological treatment was based on octreotide in 45.9% of the patients. They received 0.05 mg of intravenous octreotide and a maintenance dose of 1 mg per day in 98.6% of the cases, with efficacy in 74.2% of the patients. The tamponade with Sengstaken-Blakemo

关键词： Liver Transplantation Portal Vein Thrombosis Surgical Technique

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The role of green manure nitrogen use by corn and sugarcane crops in Brazil

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Agricultural Sciences 2013年第12期4卷 89-108页

作者： Edmilson José Ambrosano Heitor Cantarella Gláucia Maria Bovi Ambrosano Fábio Luis ferreira Dias Fabrício Rossi Paulo Cesar Ocheuze Trivelin Takashi Muraoka APTA Regional Center South PolePiracicabaBrazil APTA Agronomic Institute of Campinas(IAC)CampinasBrazil Department of Social Dentistry State University of Campinas(UNICAMP)PiracicabaBrazil College of Animal Science and Food Engineering University of São Paulo(USP)PirassunungaBrazil Center for Nuclear Energy in Agriculture(CENA/USP) PiracicabaBrazil

Three assays were developed from April 3, 1995 to October 10, 2005. The work with corn was conducted in a greenhouse, using velvet bean (Mucuna aterrima) and sunn hemp (Crotalaria juncea) as green manure with 15N labeling of either shoots or roots, in two soils with contrasting textural classes. The mineralization of N from legume plants incorporated into the two soils was investigated too. This work included two green manures: velvet bean and sunn hemp, and the common bean (Phaseolus vulgaris) residues. Nitrogen from the velvet bean accounted for a greater proportion of the soil inorganic N;shoots were responsible for most of N accumulated. Common bean residues caused immobilization of inorganic N. The leguminous species added were intensively and promptly mineralized, preserving the soil native nitrogen. One hundred days after emergence of the corn, velvet bean provided higher accumulation of nitrogen in the soil, higher absorption by corn plants and accumulation in the aerial part. The green manure decomposition was more intense in the medium textured soil. In this soil, highest nitrogen losses were also observed. The sugarcane (Saccharum spp.) was cultivated for five years in the field and was harvested three times;15N recovery was evaluated in the first two harvests. The combination of inorganic fertilizer and green manure resulted in higher sugarcane yields than either N source applied separately;however, in the second cutting the yields were higher where sunn hemp was used than in plots with ammonium sulfate. The recovery of N by the first two consecutive harvests accounted for 19% to 21% of the N applied as sunn hemp and 46% to 49% of the N applied as ammonium sulfate. Very little inorganic N was present in the 0-40 cm soil layer with both N sources.

关键词： Saccharum spp. Biological Nitrogen Fixation 15N Isotope Technique N-Mineralization Mineral Nitrogen

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