Barros, M.,  Cugnasca, C. E.. 

Precision Agriculture has a five-step cycle: soil and environment data collection, diagnosis, data analysis, precision field correction operation and evaluations. Usually some steps are execute in field or in vehicles, others at the farm office and others in both.

http://www.lbd.dcc.ufmg.br/colecoes/cbsec/2011/poster3.pdf

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