1. Postgraduate Program in Soil and Water Management, Federal Rural University of the Semi-Arid Region, Mossoró 59780-000, RN, Brazil
2. Academic Unit of Agrarian Sciences, Federal University of Campina Grande, Pombal 58840-000, PB, Brazil
3. Academic Unit of Agricultural Engineering, Federal University of Campina Grande, Campina Grande 58430-380, PB, Brazil