Comportamento dos óxidos de ferro da fração argila e do fósforo adsorvido, em diferentes sistemas de colheita de cana-de-açúcar
作者： Diogo Mazza Barbieri , José Marques Júnior , Gener Tadeu Pereira , Newton La Scala Jr. , Diego Silva Siqueira
DOI: 10.1590/S0100-06832013000600012
关键词: Soil science 、 Soil management 、 Sorption 、 Spatial variability 、 Spatial dependence 、 Goethite 、 Organic matter 、 Hydrology 、 Soil test 、 Crop yield 、 Environmental science
摘要: In agriculture, the search for higher crop yields based on sustainable soil management has led to a gradual pursuit of knowledge variables related production systems. The identification causes variability these properties become part strategic planning in sugar and ethanol industry. This study investigated spatial iron oxides clay fraction its relationship physical chemical different sugarcane cultivation systems region Ribeirao Preto, Sao Paulo State. Two 1-ha plots were outlined areas with mechanical manual harvesting Soil samples taken at 126 points from 0.00-0.25 m layer both areas. mineralogical data subjected geostatistical analyses, determine dependence, semivariograms kriging maps properties. To analyze correlation between parameters cross-semivariograms constructed. was greater than burnt (manual harvesting), whereas range largest area green-harvested sugarcane. organic matter, mean crystal diameter goethite had negatively correlation, while positive correlated P sorption two harvest
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