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Spatial variability of soybean yields under two systems cropping in savannah

Author(s): José Marcílio da Silva | Julião Soares de Souza Lima | Lúcio Bastos Madeiros | Andreia de Oliveira Vieira

Journal: Engenharia Ambiental : Pesquisa e Tecnologia
ISSN 1678-2178

Volume: 6;
Issue: 2;
Start page: 397;
Date: 2009;
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Keywords: Geostatistic | Spatial dependence | Management soil

The geostatistics is an important tool in analysis and description of soil variability properties. The maps of productivity are considered an excellent tool for analysis of performance at the level of agricultural property. Objective was to analyze the spatial yield variability of soybean in no-tillage e conventional-tillage. The experiment was carried out in two plots in sampling points defined accordingly to grid with dimension of 40 x 55 m, totaling 44 points spaced 5m. Statistical and geostatistical analysis were performed to monitor the range of spatial variability and spatial dependence. Soybean yield didn't present spatial dependence in none systems. The management in conventional-tillage was decisive in increase the yield of soybean in relation to no-tillage.Key-words: geostatistic; spatial dependence; management soil.
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