Checks soil pH and salinity
Checks water pH and salinity
Checks correct fertilizer
Checks boiler water conductivity
compensation means no thermometers or adjustments
Only small amount of soil needed
Plant health can be greatly affected
by pH (acidic or basic), salinity (soluble salts), and
alkalinity, yet these factors are often ignored by
growers. It is easy to test for these three important
parameters using a portable MyronL AGRI-METER with Soil
Optimum soil pH is
essential for obtaining maximum efficiency from fertilizers and
especially true for artificial growing media which, without
buffering capability, are much more pH sensitive than natural soil.
In addition, the pH of artificial soils can vary greatly when new,
and must be adjusted (leached) before use.
Dissolved salts (salinity) in soil must also be
monitored to guarantee healthy plants. Salt build-up in soil can be
due to high TDS (total dissolved solids) in water, excess
fertilizer, or poor drainage. Each plant has its own salinity
tolerance level. If excessive salts accumulate in the soil, roots
will take in little or no soil solution, resulting in reduced plant
growth and quality.
Using a Myron L® Model AG6/PH for checking soil
salinity and pH is easy. Simply mix one part soil with two parts
pure water in the vials provided with the Soil Test Kit. Some
organic media, such as peat moss, need a 5:1 water: soil dilution
ratio. Only a heaping tablespoon of soil is required. Agitate
container vigorously. Let settle for 45-60 minutes and decant the
water into the instrument cell cup. Push buttons to read directly in
millimhos/conductivity (salinity) and soil pH.
Regular testing of conductivity insures
that fertilizer solutions will contain the optimum level of
salinity for maximum plant health and growth. If a
fertilizer injection system is used, it can be easily
checked with an AGRI-METER by taking a sample solution as it
comes out of the end of the hose or “spaghetti” irrigation
tubes. Proper adjustment of the fertilizer injector can
prevent these common problems: over or under feeding, plant
damage and fertilizer waste.
Water pH can vary greatly from month to
month because of rainfall effect on the aquifer. Irrigation
water, if high in soluble salts, can increase soil salinity
causing plant damage. AGRI-METER tests water pH and salinity
easily and quickly, and readings are given directly in
The correct pH of water used in pesticide
solutions is also important in order to insure maximum
effectiveness and prevent pesticide “break down”.