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Type: Artigo de evento
Title: Soil Penetration Resistance Map Of A Dark Red Latosol (led) Measured By An Electronic Penetrometer And A Gps
Author: Mantovani E.C.
Sverzut C.B.
Abstract: In the last 10 years, the great expansion of Brazilian agriculture has been occurring in the Center-West region, more specifically on the Cerrados area. Although these soils are deep with high porosity and less susceptible to compaction, problems have been found caused by soil management. This region has been cultivated in large areas, with two or three crops/year. Soil compaction is one of many problems farmers are complaining, in many places with crop fields, and in the cattle grazing areas. The characterization of big areas in a short period of time, with the mapping of the compaction problems and indication of the depths is a major problem, and it is towards that the subsoiler equipment will work. The objective of this research was to test a methodology, using a hydraulic electronic penetrometer, developed by UNICAMP, for helping farmers to characterize compaction problem, with a high capacity of measurements, high precision, and good quality of data. This research has been developed at EMBRAPA Corn and Sorghum, in Sete Lagoas (Minas Gerais, Brazil), in a Dark Red Latosol (LED), clayey soil, inside an area of a 38 hectares of a Center Pivot. It was used corn crop under no-tillage, system where the measurements has been taken in a grid of 25×25m, on 10 hectares. The data has been recorded in a laptop HD, which controlled all the variables on real time. A GPS equipment recorded all points of the grid where the data were collected with the penetrometer. The over all performance of the electronic penetrometer was good, showing a powerful tool to help the farmers to characterize the compaction problems of large areas in a short period of time. Date are still being collected for further analysis.
Rights: fechado
Identifier DOI: 
Date Issue: 2000
Appears in Collections:Unicamp - Artigos e Outros Documentos

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