Our Plants, Our Complex Biotic Communities...paying
irrespective of property lines
the environmental counterpart to financial accounting and reporting. It is
logically part of the ordinary cost of doing business.” – Kai Lee
- IN THE WORDS OF BILL DERRYBERRY, IRRIGATION DESIGNER
EXTRAORDINAIRE: "ET is promoted only because it is easily and theoretically,
calculable, not because it is accurate. Therefore, . . . . the only responsible
way to manage is to monitor! Thence the moisture sensor, in adequate
quantities, sagaciously placed! "
The old adage is so true: “You
can’t manage what you don't know" Irrigation system water distribution
non-uniformity is the vital
statistic all irrigation water takers need, on-farm, on-home or park.
- After establishing reasonable water distribution
uniformity, irrigation timing and frequency are emphasized.
- Rootzone monitoring of moisture and salinity is
at the heart
of adaptive management. The analysis is eye-opening! To be
beneficial and economically feasible in short-term and more so in the
- Improving distribution uniformity means soil moisture monitoring
is more applicable to the similar landscape zones, or blocks.
- Monitoring uses evapotranspiration estimates from state climate
monitoring stations, but refines the estimate to your field. Feedback
from sensors is used to correct the "ET Model's Estimate."
- The "Wetted Area" is not used to calculate application rate.
Plant spacing (length X width) and canopy coverage, relative to gallons applied per week
within the spacing's area,
define application depths we define and prescribe and how we recommend
producers to do their accounting.
Fortunately, technologies are
improving, and costs are dropping.
Major irrigation system
renovation and enhancement such as monitoring systems, with their installation and acquisition
perhaps should be amortized over 5-7 years, but your tax
adviser should make this determination.
If the urban site’s or the farm’s
soils are uniform in terms of depth by soil types, topography, and
climatic exposure, only a few monitoring sites will be required.
examined by the variable nature and properties of the site,
relative to the number of monitoring sites.
Software Water Balance has used
and might recommend has never been a major expense.