The soil saturated hydraulic conductivity (Kθs) is a property with great variability, which requires the use of a greater number of determinations so that they can be described by the normal probability density function. Consequently, there is an increase in time and labor to obtain Kθs results if determined by conventional equipment. The use of more practical equipment and computational tools allows a faster and more accurate analysis. With this aim a falling head permeameter was built and a software […]

The point of zero salt effect (PZSE) of soil samples is usually determined by a graphic method where the PZSE corresponds to the pH value observed at the crossing point of drafted potentiometric titration curves. Although the use of graphic software decreases the personal bias that normally occurs when the titration curves are drafted by hand, this determination method can be time-consuming when there is a great number of soil samples. The present work aimed to develop a software to […]

Excessive alkalinity of fertigation waters can create a series of problems such as the blockage of water emitters, carbonate precipitation and the reduction of micronutrient availability for crops. A software, ALKA 1.0, was developed in CLIPPER 5.2, to help manage the alkalinity of those waters. The Program runs in computers IBM-PC/XT/AT/PENTIUM or other 100% compatible. It is initiated with the input of the actual irrigation water pH, its total alkalinity, and the irrigation sheet used during the crop cycle from […]