CRESCIMENTO DE MOGNO AFRICANO SUBMETIDO A DIFERENTES NÍVEIS DE IRRIGAÇÃO POR MICROASPERSÃO JOSÉ ALVES JÚNIOR1; LUIS HENRIQUE ANTUNES BARBOSA2; DERBLAI CASAROLI1; ADÃO WAGNER PEGO EVANGELISTA1 E FERNANDO REZENDE COSTA2 1 Eng. Agr. Professor Adjunto da Escola de Agronomia (EA) da Universidade Federal de Goiás (UFG), Avenida Esperança, s/n, Campus Samambaia, Goiânia, Goiás, Brasil, CEP: 74.690-900. jose.junior@pq.cnpq.br, derblaicasaroli@yahoo.com.br, awpego@pq.cnpq.br2 Eng. Agr. e Pós-graduando em Agronomia (solo e água) na EA – UFG, Avenida Esperança, s/n, Campus Samambaia, Goiânia, Goiás, Brasil, CEP: 74.690-900. luisantunesds@gmail.com, fernandocosta.tid@hotmail.com 1 RESUMO O mogno africano vem se destacando no Brasil em plantios comercias, entretanto, ainda são escassas informações referentes às respostas desta planta ao ambiente, sobretudo, em termos de capacidade evapotranspirativa e necessidade hídrica. Assim, como um dos entraves para a produção vegetal é o déficit hídrico, uma alternativa seria irrigação no início do ciclo. O objetivo deste estudo foi avaliar o crescimento de plantas jovens de mogno irrigadas por microaspersão. O estudo foi realizado em Bonfinópolis-GO, nos dois primeiros anos em campo. As plantas foram implantadas com espaçamento 5x5m, em Latossolo Vermelho distroférrico, utilizando 1 emissor à cada 2 plantas. Utilizou-se o delineamento em blocos ao acaso, contendo nove tratamentos (vazões: 0, 20, 30, 35, 40, 50, 58, 70 e 90 Lh-1), com três repetições. Avaliaram-se o diâmetro de caule, o diâmetro à altura do peito (DAP), alturas de planta e de fuste. Observaram-se diferenças significativas (p>0,01) entre os tratamentos, ajustando-se equações lineares para todas variáveis. A altura média das plantas aos 2 meses de idade era 0,28m e aos 20 meses variou 2,75m sem irrigação a 3,72m irrigado. Inicialmente o fuste era de 0,25m e ao final variou de 0,53m sem irrigação a 0,94m irrigado. Diâmetros de caule, dos 2 aos 16 meses de idade, variaram de 0,79 a 5,9cm sem irrigação e a 6,5cm irrigado. E dos 16 aos 20 meses o DAP variou de 2,6 a 3,7cm sem irrigação e 4,6 a 5,8cm irrigando. As maiores médias para todas as variáveis analisadas foram obtidas com a aplicação de 90Lh-1. Palavras-chave: Khaya ivorensis; déficit hídrico; madeira nobre; irrigação localizada; manejo da água. ALVES JÚNIOR. J.; BARBOSA, L. H. A; CASAROLI, D.1; EVANGELISTA, A. W. P. COSTA, F. R.GROWTH OF MAHOGANY AFRICAN YOUNG TREES SUBMITED TO DIFFERENT MICROSPRINKLER IRRIGATION LEVELS 2 ABSTRACT African mahogany is a tree species that has been increasing in Brazil in commercial forest. However, there is still scarce information about the responses of this species to environment, especially in evapotranspiration and water requirement. Thus, as one of the barriers for crop production is water deficit, an alternative would be the irrigation in the beginning of the cycle in field. The objective of this study was to evaluate the growth of mahogany young trees irrigated by microsprinkler. The study was conducted in Bonfinópolis-GO, Brazil, the first two years in the field. The plants were implanted with 5x5m spacing in Oxisol using 1 emitter to each 2 plants. The design was used in a randomized block design, with nine treatments (flow rates: 0, 20, 30, 35, 40, 50, 58, 70 and 90Lh-1), with three replications. We evaluated the stem diameter, the diameter at breast height (DAP), plant height and stem. There were significant differences (p> 0.01) between treatments, adjusting linear equations for all variables. The average plant height at 2 months of age was 0.28m and at 20 months ranged from 2.75m without irrigation to 3.72m irrigated. Initially the stem was 0.25 m and by the end it ranged from 0.53m without irrigation to 0.94m irrigated. Stem diameters, from 2 to 16 months old, ranged from 0.79 to 5.9 cm without irrigation and 6.5cm irrigated. And from 16 to 20 months DAP ranged from 2.6 to 3.7cm without irrigation and 4.6 to 5.8 cm irrigated. The best tree growth was obtained by applying 90Lh-1. Keywords: Khaya ivorensis; drougth; hardwoods; trickle irrigation; water management
OBJECTIVE: To evaluate main imaging findings of subungual glomus tumors. MATERIALS AND METHODS: Retrospective study of eight cases of subungual glomus tumors from the archives of two private clinics in Goiânia, GO, Brazil. Plain radiographs were obtained in five cases, Doppler ultrasonography in five, and magnetic resonance imaging in five cases. RESULTS: Mean age of the patients included in the present study was 39 years, with female predominance (7:1). Tumors didn't present prevalence in any specific finger and in most of cases the tumor was located in the medial subungual region. Plain radiography was positive in five cases, demonstrating pressure erosion. Doppler ultrasonography was positive in five cases, demonstrating a hypoechoic and hypervascularized solid nodule. Magnetic resonance imaging was positive in all of the cases, showing a solid nodule, hypointense on T1-, hyperintense on T2-weighted image, with homogeneous contrast uptake. All the patients underwent surgical excision of the lesion with histopathological confirmation. CONCLUSION: In most of cases, glomus tumors are subungual. The diagnosis is clinical and generally is lately achieved. Imaging methods are useful tools for the early diagnosis besides aiding in the surgical planning, considering that the treatment of choice is surgical excision. Keywords: Subungual glomus tumors; Magnetic resonance imaging; Ultrasonography.OBJETIVO: Analisar os principais aspectos de imagem dos tumores glômicos subungueais. MATERIAIS E MÉTODOS: Realizado estudo retrospectivo de oito casos de tumores glômicos subungueais, pertencentes a arquivos de duas clínicas particulares de Goiânia, GO, Brasil. Foram obtidas radiografias em cinco casos, ultrassonografia com Doppler em seis casos e ressonância magnética em cinco casos. RESULTADOS: A idade média de acometimento no presente estudo foi de 39 anos, com predomínio do sexo feminino, na proporção de 7:1. Os tumores não apresentaram predileção por nenhum dedo e a maioria localizava-se na região subungueal mediana. A radiografia foi positiva em três casos, demonstrando erosões de pressão. A ultrassonografia com Doppler foi positiva em cinco casos, evidenciando nódulo sólido, hipoecoico e hipervascularizado. A ressonância magnética, em todos os casos, demonstrou nódulo sólido com hipossinal em T1, hipersinal em T2 e captação homogênea do meio de contraste. Em todos os pacientes foi realizada excisão cirúr-gica com confirmação anatomopatológica. CONCLUSÃO: A maioria dos tumores glômicos tem localização subungueal. O diagnóstico é clínico, porém geralmente tardio. Os métodos de imagem auxiliam no diagnós-tico precoce, além auxiliar no planejamento terapêutico, cujo tratamento de escolha é a excisão cirúrgica. Unitermos: Tumor glômico subungueal; Imagem por ressonância magnética; Ultrassonografia. AbstractResumo
Rain is the climatic factor that has greater influence on the erosion in the tropical regions due to its characteristics, intensity, duration and frequency. Knowing the erosive potential of rainfall and its distribution throughout the year allows the planning of management practices that aim to reduce water erosion and soil losses. In this work, it is proposed to define for the locality under influence of the rainfall station (code: 83368) in the municipality of Aragarças-GO, the R factor of the USLE, the rainfall patterns and the months that have the greatest erosive potential. A rainfall series from the period from 2002 to 2007 and a rainfall series from 1990 to 2014 were used. The data were converted to the digital format and, at the end of this phase, systematized and submitted to Chuveros software for the determination of erosivity indices (EI30 and KE> 25) and advanced, intermediate and delayed precipitation patterns. In the studied period, the average annual rainfall of the study site was 1,571.6 mm, with 91% of the rainfall concentrated from October to March. The mean annual values of EI30 and KE> 25 were 7,384.2 MJ mm ha-1 h-1 year-1e and 127.9 MJ ha-1ano-1, respectively. The advanced hydrological pattern was the highest frequency, followed by the intermediate and delayed patterns.
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