Stratified Soil
Mostrando 1-12 de 28 artigos, teses e dissertações.
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1. Estimating the efficiency level of different tea farming systems in Rize Province Turkey
RESUMO: O estudo analisa o nível de eficiência de dois sistemas agrícolas diferentes, tais como proprietários e fazendas de chá operadas por acionistas, bem como explorar o efeito de diferentes fatores de decisão, estruturais e de gestão na eficiência. Total de 138 produtores de chá foram selecionados através do procedimento de amostragem estratif
Cienc. Rural. Publicado em: 25/11/2019
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2. Genetic variability and breeding potential of Flintisa Composite of maize in two levels of technology
Abstract The purpose this study was to verify the breeding potential of Flintisa Composite for low (LT) and high (HT) technology of cultivation, and the best selection strategy to be adopted. For this reason half-sib progenies were evaluated in the two technological levels. In HT, it was used basic fertilization, two top dressing and supplementary irrigation
Crop Breed. Appl. Biotechnol.. Publicado em: 01/08/2019
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3. Copper and zinc fractions in the profile of an Inceptisol cultivated with apple in southern Brazil
ABSTRACT The present study aimed to evaluate the accumulation and distribution of Cu and Zn fractions in the profile of an Inceptisol by application of fungicides with a previous history of apple cultivation in southern Brazil. Stratified soil samples (0.0 – 0.025 m, 0.025 –0.050 m, 0.05 – 0.10 m, 0.10 – 0.15 m, 0.15 – 0.20 m and 0.20 – 0.40 m de
Bragantia. Publicado em: 16/04/2018
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4. Mitigation of the Gradient of Chemical Properties in the Rooting Zone of Dystrophic Oxisols by Gypsum and Lime Inputs under a No-Till System
ABSTRACT Improvement of soil chemical properties in dystrophic Oxisols managed under long-term no-tillage system (NTS) with surface broadcast lime has been, frequently, restricted to a shallow topsoil layer. As a consequence, a sharply-defined chemical quality gradient is created, with deterioration from the surface towards deeper layers in Oxisols in southe
Rev. Bras. Ciênc. Solo. Publicado em: 22/06/2017
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5. Ethnopedology of a Quilombola Community in Minas Gerais: Soils, Landscape, and Land Evaluation
ABSTRACT Quilombolas are Afro-brazilian rural peasants who descended from escaped slaves who tried to carve out territories of autonomy (called Quilombos) by collective organization and resistance. Despite many anthropological and ethnopedological studies, little research has been carried out to identify the agricultural practices and the knowledge of people
Rev. Bras. Ciênc. Solo. Publicado em: 06/02/2017
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6. Cacao Crop Management Zones Determination Based on Soil Properties and Crop Yield
ABSTRACT: The use of management zones has ensured yield success for numerous agricultural crops. In spite of this potential, studies applying precision agricultural techniques to cacao plantations are scarce or almost nonexistent. The aim of the present study was to delineate management zones for cacao crop, create maps combining soil physical properties and
Rev. Bras. Ciênc. Solo. Publicado em: 19/12/2016
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7. Do Rates and Splitting of Phosphogypsum Applications Influence the Soil and Annual Crops in a No-Tillage System?
ABSTRACT Applications of phosphogypsum (PG) provide nutrients to the soil and reduce Al3+ activity, favoring soil fertility and root growth, but allow Mg2+ mobilization through the soil profile, resulting in variations in the PG rate required to achieve the optimum crop yield. This study evaluated the effect of application rates and splitting of PG on soil f
Rev. Bras. Ciênc. Solo. Publicado em: 2016
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8. Selection of forest fragments to seed harvest in Itapemirim river watershed and around the Caparaó National Park / Seleção de fragmentos florestais para a colheita de sementes na bacia hidrográfica do rio Itapemirim e entorno do Parque Nacional do Caparaó
Forest fragments are the natural vegetation interrupted by anthropogenic or natural barriers, able to reduce significantly the flow of animals, pollen or seeds. The edge, the type of neighborhood, the degree of isolation and the effective size of forest fragments are the main factors that should be considered to measure changes in biological processes of a p
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/12/2012
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9. Regeneração natural das clareiras antrópicas da Província Petrolífera de Urucu-Coari, AM / Natural regeneration of the anthropogenic gaps of Urucu Petroleum Province Urucu-Coari/AM
We studied the environmental variables and species composition in natural regeneration in 10 anthropogenic clearings in the Urucu Petroleum Province (Urucu-Coari/AM). We used the methodology typical of phytosociological surveys, analyzed Soil samples and measured the distance between the clearings and the edge of the forest. We used Canonical Correspondence
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/03/2011
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10. Distribuição do fósforo no perfil do solo sob sistema plantio direto
The Cerrado, even with soils of low fertility, has been increasing in importance within the Brazilian agricultural scenario, by planning the use and management of land, with the adoption of no-tillage system (NT) and the use of correctives and fertilizers. The application of fertilizers in NT is all doneon the soil surface, which leads to the accumulation of
Publicado em: 2009
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11. EvoluÃÃo das caracterÃsticas morfoanatÃmicas nos ciclos de seleÃÃo do milho âSaracuraâ sob encharcamento intermitente / Evolution of morpho-anatomicals characteristics on selection cycles of maize (Zea mays L.) âSaracuraâ â BRS â 4154 under intermittent soil flooding
Although every single plant needs a certain amount of water, the excess around roots can cause severe injuries and even death of most crops. Soil flooding is one of the most important factors which affects maize crop production and development on tropical and subtropical regions. Excess of water blocks the oxygen transfer and others gases from soil to atmosp
Publicado em: 2009
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12. Fosforitos do Grupo Bambuí na região de Campos Belos (GO)/ Arraias (TO), na borda oeste do Cráton São Francisco
Sao Bento, Coite 1 and Coite 2 are the three sedimentary phosphate deposits known to date in the Campos Belos (GO) and Arraias (TO) region. They are 3 low volume but high grade deposits, with more than 24% P2O5. The phosphorites and siltites found in that region occur at the bottom of the Sete Lagoas Formation, as part of the Neoproterozoic Bambui Group. The
Publicado em: 2009