Geostatistical analysis of crop yield maps in a long term no tillage system.

It is known, for a long time, that crop yields are not uniform at the field. In some places, it is possible to distinguish sites with both low and high yields even within the same area. This work aimed to evaluate the spatial and temporal variability of some crop yields and to identify potential zones for site specific management in an area under no-tillage system for 23 years. Data were analyzed from a 3.42 ha long term experimental area at the Centro Experimental Central of the Instituto Agronômico, located in Campinas, São Paulo State, Brazil. The crop yield data evaluated included the fo...

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• Assuntos:

  • Spatial variability
  • Cross semivariogram
  • Management zones