SPATIAL VARIABILITY OF SOIL PHYSICAL PROPERTIES OF A GROWN WITH CANE SUGAR

Abstract

The continued soil use and mechanized traffic during the cultivation of sugar cane can promote alterations in the physical properties of soil, causing a fall in production. The objective of the present study was to evaluate the spatial variability of the penetration resistance of the soil, the mechanized harvesting system of sugar cane. The experiment was conducted at the farm model, located in Lambari D'Oeste-MT, on an area approximately 15 ha in dystrophic Red Latosol, in layers of 0-5cm; 5-10cm; 10-15cm; 15-20cm; 20-25cm; 25-30cm; 30-35cm; 35-40cm; 40-45cm. The experimental parcel consisted of an experimental mesh of 110 points. To determine the soil penetration resistance was used a penetrometer impact. The samples were removed for determination of water content in soil. The values were analyzed using statistical analysis exploratory and geostatistics for identification space variability and spacialization of penetration resistance in the study area. The results expressed spatial dependence in the variable on all evaluated layers. Concludes that the spatial dependence was found for the penetration soil resistance in all analyzed layers, except the surface layer (0-10 cm) the increase of the penetration resistance has identified a compaction in depth.