Tension Superficial

Computations

Computation of wetted bulb dimensions from trickle sources

In the link below you will find software to calculate the diameter of a wetted bulb produced by a trickle source in deep, uniform and homogeneous soils.

This software is useful to compute the number of emitters per plant required by a microirrigation system to ensure root coverage.  This is needed so that a sufficiently large portion of the root zone is wetted to satisfy water and nutrient requirements of the plant.

The method described here was verified only for sandy soils. Read the full article