Soil Preparation
Mostrando 13-24 de 124 artigos, teses e dissertações.
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13. Growth and sugarcane cultivars productivity under notillage and reduced tillage system
ABSTRACT This study aims to evaluate the growth and yield of the sugarcane plant cultivars, and their correlation to soil mechanical penetration resistance in a Dystroferric Red Oxisol submitted to reduced tillage and, no-tillage systems. Eight sugarcane plant cultivars (RB965902, RB985476, RB966928, RB855156, RB975201, RB975242, RB036066 and RB855536) were
Rev. Ceres. Publicado em: 12/08/2019
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14. Impact of methods used to reconstitute tailings specimens on the liquefaction potential assessment of tailings dams
Abstract The aim of this research is to investigate the liquefaction susceptibility of silt sandy mining tailings by experimental laboratory techniques. The main aspect analyzed is how techniques of sample reconstitution impact the results obtained in static undrained triaxial tests. Different methods of sample preparation are reviewed, such as moist tamping
REM, Int. Eng. J.. Publicado em: 19/06/2019
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15. FUZZY MODELING OF THE EFFECTS OF IRRIGATION AND WATER SALINITY IN HARVEST POINT OF TOMATO CROP. PART I: DESCRIPTION OF THE METHOD
ABSTRACT It was used statistical techniques for the evaluation of agricultural experiments, but there are mathematical theories that allow finer adjustments, highlighting among them, the fuzzy logic. The objective of the study was characterizing a method of fuzzy modeling from an agronomic experiment. For this study it was used data from an experiment conduc
Eng. Agríc.. Publicado em: 19/06/2019
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16. Chave de identificação dendrológica das espécies mais comuns de uma área de Cerrado sensu stricto, Gurupi, Tocantins
Resumo Estudos com chave de identificação dendrológica da flora arbustivo-arbórea do Cerrado no Estado do Tocantins ainda são escassos ou incipientes, promovendo, assim, uma lacuna de informações técnicas e científicas. Portanto, esta pesquisa visa respaldar o estabelecimento de prioridades para futuras estratégias de conservação e planos de mane
Ciênc. Florest.. Publicado em: 30/05/2019
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17. Allelopathic Effect of Lotus and Arrowhead Weed on Wheat, Wild Oat and Milkthistle Germination
RESUMO: Foi conduzido um experimento para investigar os efeitos alelopáticos do lótus (Nelumbo nucifera Gaertn.) e da erva-flecha (Sagittaria sagittifolia (Brummitt & Powell): L.) na germinação de sementes de trigo e duas plantas daninhas associadas: aveia silvestre (Avena fatua L.) e cardo-mariano (Silybum marianum (L.) Gaertn.). O experimento foi insta
Planta daninha. Publicado em: 06/05/2019
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18. Durability of Soil-Cement Blocks with the Incorporation of Limestone Residues from the Processing of Marble
The great environmental impact caused by mineral production has forced mining and ornamental stone industries to acquire new concepts and technical solutions in order to develop eco-friendly and sustainable activities. In this context, this work aims to study the durability of soil-cement block with the incorporation of limestone residues from the processing
Mat. Res.. Publicado em: 04/06/2018
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19. TILLAGE INTERFERENCE IN THE QUALITY OF PEANUT MECHANIZED HARVEST
ABSTRACT In Brazil, a large portion of peanut production is found under conventional soil preparation. Due to the fact that there is a lack in studies related to the cultivation of peanuts in conservationists soil preparation, mainly in the field of losses and mechanized harvesting. Thus, it was aimed to assess the quality of digging and gathering operation
Eng. Agríc.. Publicado em: 2018-04
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20. RELATIONSHIP BETWEEN SAMPLE DESIGN AND GEOMETRIC ANISOTROPY IN THE PREPARATION OF THEMATIC MAPS OF CHEMICAL SOIL ATTRIBUTES
ABSTRACT Spatial variability depends on the sampling configuration and characteristics associated with the georeferenced phenomenon, such as geometric anisotropy. This study aimed to determine the influence of the sampling design on parameter estimation in an anisotropic geostatistical model and the spatial estimation of a georeferenced variable at unsampled
Eng. Agríc.. Publicado em: 2018-04
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21. Soil Compaction Due to Wood Harvesting Traffic at Different Extraction Distances
ABSTRACT This study evaluated the effect on Oxisol soil compaction of traffic by wood harvesting machines from different extraction distances carried out by a logging company located in Paraná State. The harvesting system was composed of a feller buncher, skidder and harvester, in which soil compaction was evaluated at four extraction distances and four dep
Floresta Ambient.. Publicado em: 08/02/2018
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22. METHODOLOGY EVALUATION OF PIN MICRORELIEF METER
ABSTRACT: The effects of natural weathering and different managements performed in agriculture may best be understood by studying the soil roughness. The aim of this study was to evaluate the optimization of the use of pin microrelief meter, an instrument used to determine the soil surface roughness, as the number of readings collected over traditional metho
Eng. Agríc.. Publicado em: 2017-09
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23. ESTIMATION OF FUEL CONSUMPTION IN AGRICULTURAL MECHANIZED OPERATIONS USING ARTIFICIAL NEURAL NETWORKS
ABSTRACT This study aimed to develop artificial neural networks for the estimation of tractor fuel consumption during soil preparation, according to the adopted system. The multilayer perceptron network was chosen. As input data: the soil mechanical penetration resistance, the mobilized area by implements, the working gear and the tractor engine speed. The n
Eng. Agríc.. Publicado em: 2017-02
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24. HÍBRIDOS DE QUITOSANA-ARGILA PARA ENCAPSULAMENTO E LIBERAÇÃO SUSTENTADA DO FERTILIZANTE NITRATO DE POTÁSSIO
The use of controlled release fertilizers is a trend for improving productivity, reducing costs and environmental pollution. Such materials release gradually the nutrients to the plant in order to supply its requirement and are an alternative to improve fertilization. The preparation of a microsphere from natural materials (chitosan and montmorilonite clay)
Quím. Nova. Publicado em: 2016-12