Plantation
Mostrando 1-12 de 439 artigos, teses e dissertações.
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1. Colonialismo alemão e privatização dos recursos naturais africanos
Resumo: Nos finais do século 19, as colônias alemãs na África entraram em competição ecológica com as comunidades locais, o que promoveu não apenas mudanças na economia tradicional de várias regiões, mas também impactos ambientais. A privatização dos recursos naturais foi responsável por mudanças antrópicas na África sob o domínio colonial
Tempo. Publicado em: 2022
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2. Impact of sprayer drone flight height on droplet spectrum in mountainous coffee plantation
RESUMO Condições climáticas e parâmetros operacionais dos pulverizadores influenciam a qualidade da pulverização. Os veículos aéreos não tripulados são considerados uma ferramenta tecnológica moderna, útil e bastante eficiente na aplicação de defensivos agrícolas, uma vez que realizam pulverizações pontuais, reduzindo problemas ambientais e
Revista Brasileira de Engenharia Agrícola e Ambiental. Publicado em: 2022
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3. High rates of agricultural gypsum affect the arbuscular mycorrhiza fungal community and coffee yield
ABSTRACT High rates of agricultural gypsum, above the recommended levels, have been used on a regular basis to deepen plant roots and to alleviate recurrent water stress in Cerrado areas. However, very little is known about the consequences of this practice to arbuscular mycorrhizal fungi (AMF). Therefore, the objective of this study was to evaluate whether
Bragantia. Publicado em: 2020-12
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4. The management of orthotropic stems modulates the photosynthetic performance and biomass allocation of productive plants of Arabica coffee
ABSTRACT Due to the possibility of enhancing the physiological responses by modulating the architecture of coffee trees, the objective of the study was to analyze the leaf gas exchanges and biomass allocation of Arabica coffee cultivated with different numbers of orthotropic stems. The experiment was carried out in a plantation located in Santa Teresa-ES, Br
Rev. Ceres. Publicado em: 2020-12
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5. SOIL CHEMICAL CHANGES AND RESEMBLANCES IN A CHRONOSEQUENCE RAINFOREST-SUGARCANE-PASTURELAND IN THE ATLANTIC FOREST BIOME
ABSTRACT This study evaluated soil chemical and isotopic changes in soils of a chronosequence rainforest-sugarcane-pasture in the Atlantic Forest biome, Brazil. Soil samples were collected (0-20 cm) in areas of native Brazilian Atlantic rainforest, sugarcane plantation and pastures of Brachiaria decumbens. The soil analyses performed were: pH (water 1:2.5),
CERNE. Publicado em: 2020-12
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6. GROWTH AND PHYSIOLOGICAL RESPONSES OF YERBA MATE SEEDLINGS AND MINI-CUTTINGS UNDER DROUGHT STRESS
ABSTRACT Yerba mate is a tree species whose natural distribution occurs in the countries of Argentina, Paraguay, and Brazil, where most of the plantations are concentrated. For the establishment of plantations seedlings are commonly used. But alternatively, there are ex vitro vegetative propagation techniques like mini-cuttings technology, which has the pote
CERNE. Publicado em: 2020-09
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7. WOOD RESOURCE BALANCE FOR PLANTATION FORESTS IN BRAZIL: RESOURCES, CONSUMPTION AND CASCADING USE
ABSTRACT A resource balance comprises a method to monitor sources and uses of a given material. The wood resource balance analyses origins of wood resources used in the production of semi finished forest products. At the same time, the resource balance helps tracking wood processing residues and its further uses. A primary survey with 113 companies was condu
CERNE. Publicado em: 2020-06
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8. Occurrence of Pesticides Associated to Atmospheric Aerosols: Hazard and Cancer Risk Assessments
Since the 1950s, pesticides have been used in agriculture. The increase in their consumption has been observed in recent years. In this work, it was determined the concentration of pesticides in the atmosphere of São Paulo and Piracicaba cities (sugarcane plantation site) and the hazard quotients and cancer risk caused by inhalation of these compounds were
J. Braz. Chem. Soc.. Publicado em: 2020-06
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9. Effects of acetamiprid on Lipaphis pseudobrassicae (Hemiptera: Aphididae) resistant and susceptible to the parasitoid Diaeretiella rapae (Hymenoptera: Braconidae, Aphidiinae)
ABSTRACT This study evaluated the relationship between the resistance of Lipaphis pseudobrassicae to the parasitoid Diaeretialla rapae and the effects of the insecticide acetamiprid on the aphid. Four groups of L. pseudobrassicae collected in Uberlândia, MG, were used. The first two were formed by individuals of the same clone (C1), which were resistant (C1
Rev. Ceres. Publicado em: 2020-06
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10. INFLUENCE OF SOIL TEXTURE, CLIMATE AND VEGETATION COVER ON SECONDARY SOIL SALINIZATION IN PAMPAS PLAINS, SOUTH AMERICA
ABSTRACT Land-use change from herbaceous to woody cover -or vice versa- largely affects water fluxes, which in turn can mobilize existing salts dissolved in the soil, and thereby negatively affect soil and/or water quality and site productivity. Secondary salinization was observed after afforestation at the Northern and Eastern subregions of the Río de la P
CERNE. Publicado em: 2020-06
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11. Influência de povoamento de Pinus taeda sobre o banco de sementes na região de Floresta Ombrófila Mista
Resumo Este estudo teve o objetivo de avaliar o efeito de um povoamento de Pinus taeda sobre a composição florística e estrutura do banco de sementes de um remanescente de Floresta Ombrófila Mista (FOM). Para tanto foram coletadas 160 amostras do banco de sementes, 80 de um remanescente de FOM e 80 em um povoamento de P. taeda. As amostras foram colocada
Rodriguésia. Publicado em: 20/12/2019
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12. PLANT RICHNESS AND LIFE FORM DIVERSITY ALONG VEGETATION AND FOREST USE GRADIENTS IN NORTHWESTERN PATAGONIA OF ARGENTINA
ABSTRACT The imbalace between the increase in the demand and the decrease in the supply of products from natural forests, partly explains the on-going development of exotic tree plantations. In northwestern Patagonia of Argentina, Pinus ponderosa (Pinaceae) afforestation plays a key role in ameliorate degraded soils, but may also reduce biodiversity. The eco
CERNE. Publicado em: 20/12/2019