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Mostrando 1-12 de 87 artigos, teses e dissertações.
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1. Population structure, diametric distribution and use of Commiphora leptopholoeos (Mart.) JB Gillett in arboreal Caatinga
ABSTRACT The objective of this work was to characterize the population structure, analyze the spatial distribution pattern and identify the potential use of the Commiphora leptopholoeos in the Contendas do Sincorá National Forest, BA. Thus, three disjoint transects of 40 x 160 m were installed for the phytosociological study and spatial distribution and sub
Revista Ceres. Publicado em: 2022
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2. Identification of populations and hybrid combinations of maize for in natura consumption
ABSTRACT Brazil is one of the leading countries in the production of maize (Zea mays), with great potential for growing green maize, which has a superior commercial value in relation to maize marketed in the form of grains. Although important, the availability of cultivars recommended for the production of green maizeis still very scarce. The objectives of t
Bragantia. Publicado em: 07/11/2019
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3. Flora and Vegetation in Different Physiognomies of a Mussununga in Southeastern Brazil
ABSTRACT Mussununga is an understudied ecosystem within the Atlantic Forest domain, in sandy spodosol lowlands from Bahia to Espírito Santo. Its physiognomy varies from grassland to forest, with a transitional savannic area. We evaluated the life-form spectra differences between the grassland and savanna Mussunungas and its relationship with the depth of a
Floresta Ambient.. Publicado em: 12/09/2019
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4. Optimal size of experimental plots of papaya trees using a modified maximum curvature method
RESUMO: Objetivou-se avaliar o tamanho ótimo de parcela para a cultura do mamoeiro pelo método da máxima curvatura modificado sob condições edafoclimáticas do Recôncavo Baiano. O experimento constituiu-se de um ensaio de uniformidade, utilizando a linhagem CNPMF-L78, desenvolvida pela Embrapa Mandioca e Fruticultura, plantada no espaçamento de 3 m x
Cienc. Rural. Publicado em: 09/09/2019
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5. Size of plots for experiments with cactus pear cv. Gigante
RESUMO A definição do tamanho da parcela experimental configura-se como ferramenta essencial para assegurar a precisão na análise estatística em experimentos. Assim objetivou-se estimar o tamanho de parcela para a cultura da palma forrageira cv. Gigante por meio do Método da Máxima Curvatura Modificado, nas condições do Semiárido Nordestino. O ensa
Rev. bras. eng. agríc. ambient.. Publicado em: 06/05/2019
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6. Does Ferralsol Clay Mineralogy Maintain Potassium Long-Term Supply to Plants?
ABSTRACT Ferralsols ( Latossolos ) should contain few or no 2:1 clay minerals and have low potassium (K) contents, and consequently low levels of non-exchangeable K forms are expected. The aim of this study was to evaluate how the clay mineralogy of a Ferralsol affects the soil K dynamics in response to K fertilization during cropping and whether the clay mi
Rev. Bras. Ciênc. Solo. Publicado em: 15/04/2019
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7. Rhizobial Inoculation and Molybdenum Fertilization in Peanut Crops Grown in a No Tillage System After 20 Years of Pasture
ABSTRACT: Peanut (Arachis hypogea) is an important legume grain consumed by humans and utilized for effective nutrient cycling in a diverse cropping system. Areas that have been cultivated with perennial pasture for decades may have nutritional deficiencies and lack a sufficient population of atmospheric nitrogen-fixing bacteria. Molybdenum is an essential m
Rev. Bras. Ciênc. Solo. Publicado em: 20/12/2018
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8. THE DYNAMICS OF THE SUBSTRATE RECOVERY OF WASTE DUMPS IN CALCARY MINING UNDER NATURAL REGENERATION
ABSTRACT This study aimed to evaluate the dynamics of the physical and chemical recovery of the substrates of waste dumps of different ages undergoing natural regeneration, in a calcary mining in Salto de Pirapora - SP, Brazil. Characterization of the vegetation, vegetation and physical and chemical cover of the substrates of the abandoned waste dumps since
CERNE. Publicado em: 2018-03
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9. Habitat heterogeneity and diversity of bryophytes in campos rupestres
ABSTRACT Campos rupestres (rupestrian grasslands) are characterized by the presence of rock outcrops associated with an herbaceous-shrub physiognomy typically growing on quartzitic soils; they occur a wide variety of habitats. Bryophytes respond rapidly and efficiently to variation in microclimate. The present work aimed to study bryophyte species richness,
Acta Bot. Bras.. Publicado em: 2017-06
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10. Vertical distribution of epiphytic bryophytes in Atlantic Forest fragments in northeastern Brazil
ABSTRACT The microclimatic gradient established from the forest understory to the canopy provides a range of different conditions for the establishment of bryophytes along the height of a tree. We investigated epiphytic bryophyte communities of four fragments of Atlantic Forest with the aim of describing their vertical zonation and assessing differentiation
Acta Bot. Bras.. Publicado em: 10/11/2016
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11. Fracture initiation from initial spherical flaws in incompressible propellant materials
The scope of the present article is the study of the fracture initiation from initial spherical flaws in incompressible propellant materials. Using a constitutive law, derived from the neo-Hookean strain energy function, one may deduce the relation between the radial pressure applied at infinity and the corresponding extension ratio, at the surface of the ca
Matéria (Rio J.). Publicado em: 2015-06
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12. Floristic composition and spatial distribution of vascular epiphytes in the restingas of Maracanã, Brazil
Vascular epiphytes constitute a life form that is important to maintaining the biological diversity of forest ecosystems, because they provide food resources and specialized microenvironments for fauna in the forest canopy. This study aimed to describe the floristic composition and ecological aspects of vascular epiphytes occurring in the restingas (coastal
Acta Bot. Bras.. Publicado em: 2014-03