Soil Conservation
Mostrando 13-24 de 330 artigos, teses e dissertações.
-
13. Urochloa decumbens Has Higher Mycorrhizal Colonization in Degraded than in Pristine Areas in the Brazilian Cerrado
ABSTRACT Brazil has extensive degraded areas, where vegetation fails to establish due to harsh soil conditions. However, some invasive species such as Urochloa decumbens are successful pioneers in such areas, but the reasons deserve investigation. Mycorrhizal fungi are abundant in Cerrado soils, and their association with plants are beneficial for their esta
Floresta Ambient.. Publicado em: 07/11/2019
-
14. Soil physical properties and soil organic carbon content in northeast Brazil: long-term tillage systems effects
ABSTRACT Concerns about the negative effects of agriculture on soil physical quality and soil organic carbon (SOC) pools have spurred on the adoption of conservation tillage systems in tropical regions. This study aimed to evaluate the long-term impacts (16th year) of conventional (CT), minimum (MT) and no-tillage (NT) practices and different cover crops (su
Sci. agric. (Piracicaba, Braz.). Publicado em: 04/11/2019
-
15. Soil conservation practices in a watershed in Southern Brazil
Abstract: The aim of this study was to determine how often rural farmers in a watershed use no-tillage systems combined with crop rotation, contour farming and agricultural terraces. The study area was Paraná Watershed III (PB3) in the western region of Paraná State, and data from the 2006 Agricultural Census of the Brazilian Institute of Geography and Sta
An. Acad. Bras. Ciênc.. Publicado em: 07/10/2019
-
16. Propagación in vitro de Bucquetia glutinosa, especie endémica de los Paramos colombianos
Abstract In vitro multiplication protocol of B. glutinosa was established by seeds collected in the Paramo of Rabanal (Boyacá-Colombia), this species is useful in programs for the conservation and restoration of moorland ecosystems. During the establishment of in vitro cultures, 57% of aseptic seeds were obtained with 5 and 10% NaOCl, after 30 days of cultu
Rodriguésia. Publicado em: 03/10/2019
-
17. Definition of priority areas for soil and water conservation in the Itanguá watershed, Capão Bonito, SP state, Brazil
Resumo O uso inadequado dos solos pode provocar erosão e assoreamento dos cursos d’água reduzindo assim a quantidade e a qualidade da água na bacia. A implantação de práticas conservacionistas de solo e a presença de vegetação nativa são ações de fundamental importância para a conservação do solo e água na bacia, uma vez que elas atuam dimi
Ciênc. Florest.. Publicado em: 30/09/2019
-
18. Estimates of soil losses by the erosion potential method in tropical latosols
RESUMO A erosão hídrica é um dos principais problemas enfrentados na cafeicultura, pois promove a degradação ambiental e a diminuição da produção agrícola. As estimativas da erosão auxiliam no planejamento de práticas e sistemas de manejo conservacionistas e permitem aferir as taxas de perdas do solo. Assim, o objetivo do trabalho foi estimar a p
Ciênc. agrotec.. Publicado em: 30/09/2019
-
19. Modeling of the Rainfall and R-Factor for Tocantins State, Brazil
ABSTRACT The state of Tocantins is inserted in the new Brazilian agricultural frontier and has shown enormous potential for expansion of the agricultural lands. However, there is a lack of more elaborate scientific information for better planning and guide agricultural activities, especially regarding the soil and water conservation. Tocantins has a relevant
Rev. Bras. Ciênc. Solo. Publicado em: 30/09/2019
-
20. Fertilidade do solo e estoques de carbono e nitrogênio sob sistemas agroflorestais no Cerrado Mineiro
Resumo Os sistemas agroflorestais são utilizados para diversificar a produção de alimentos, proporcionar aumento na biodiversidade da fauna e da flora e conservação do carbono e nutrientes no solo. Sendo assim, o objetivo deste estudo foi avaliar a fertilidade e os estoques de carbono (C) e nitrogênio (N) do solo após dez anos de implantação de sist
Ciênc. Florest.. Publicado em: 30/09/2019
-
21. Avaliação dos conflitos no uso da terra na bacia hidrográfica do ribeirão Lamarão, Distrito Federal
Resumo A falta de estudos e a constante degradação das Áreas de Preservação Permanentes (APPs) têm representado um dos maiores entraves para o planejamento de ações conservacionistas, além de favorecer o uso de estratégias inadequadas de manejo das bacias hidrográficas. Dessa forma, este estudo teve como objetivo, delimitar de maneira automática
Ciênc. Florest.. Publicado em: 30/09/2019
-
22. CHANGES IN THE SOIL STRUCTURE AND ORGANIC MATTER DYNAMICS UNDER DIFFERENT PLANT COVERS
ABSTRACT The soil properties reported in areas with different management provide useful information about the systems’ operation, state of conservation and resilience. In this way, this study evaluated physical properties and organic matter dynamics of soil under different plant covers in seven areas consisting of: five areas under ecological restoration (
CERNE. Publicado em: 09/09/2019
-
23. Soil conservation management with cover crops: effects on critical energy levels, release and dispersion of aggregates
ABSTRACT The normalized dispersion index (NDI) and the b/a index are commonly used to express the stability of aggregates measured by ultrasound. However, few studies have used the critical energy (CE) extracted from modeling to explain the effects of soil use and management on soil aggregation. The objective of this study was to evaluate the influence of so
Bragantia. Publicado em: 05/08/2019
-
24. The relationship between plant density and survival to water stress in seedlings of a legume tree
ABSTRACT Competition for soil water is one of the major processes that drive the assembly of plant communities, particularly in regions subjected to long dry seasons. The relationship between plant density and soil water competition has strong, but poorly understood, practical implications for population dynamics, restoration and conservation. We planted see
Acta Bot. Bras.. Publicado em: 18/07/2019