DEVELOPMENT OF AN ELECTRONIC SPREADSHEET FOR IRRIGATION MANAGEMENT
DOI:
https://doi.org/10.13083/reveng.v21i2.376Keywords:
evapotranspiração da cultura, irrigação, elementos climáticosAbstract
This study presented the development of electronic spreadsheets for the control of irrigation management. Spreadsheets were developed in the programming language Visual Basic for Applications (VBA). These spreadsheets were tested by simulations for determining the water requirements of the melon crop, yielding evaporation data and the Class “A” pan coefficient for estimating reference evapotranspiration (ETo) and crop coefficients (Kc) for the study conducted in the municipality of Baraúna-RN (05º04’48” S, 37º37’00” W). To estimate the ETo by the methods available in the spreadsheets, daily data of the maximum and minimum temperature of the air, relative humidity of the air, wind speed and number of hours of sunshine were obtained from the Mossoró-RN conventional station, comprising the period from December 2005 to March 2006. The water demand for melon with estimates of ETo by Class “A” pan simulated in the spreadsheets was similar to obtained experimental values. The set of spreadsheets showed to be practical and fast in the execution of calculations involved in the determination of water requirements of the crop.Downloads
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