test includes the following:
pH and electroconductivity (salinity)measurement - saturated extract paste
nutrients/toxic elements measurement of DTPA extract for Table I elements
measurement of sodicity (Sodium Adsorption Ratio)
saturation extract: nitrate, chloride, sulfate, sodium, calcium, magnesium, potassium, soluble phosphate and boron
estimate of soil texture and soil organic matter presence of lime determined
Specific soil tests
Soil Organic Matter/total carbon and nitrogen
$50.00
Soil texture - sand, silt and clay percentage and gravel
$25.00
Water percolation rate
$25.00
Estimated water percolation rate based on soil organic matter, soil texture and salinity
$5.00
Total mineral analysis - EPA 3050, 30 elements
$85.00
CEC (cation exchange capacity) and base saturation
$35.00
Ammonium nitrogen, exchangeable
$20.00
Sieve analysis
$50.00
Measurement of soil organic matter by combustion (ash)
$25.00
Bulk density, disturbed sample
$25.00
pH, salinity and presence of lime
$20.00
Growth study for herbicides, wheat and radish
$85.00
Handling charge - $5.00 per sample, waved for multiple standard tests
Table I
•
aluminum
copper
•
nickel
sulfur
•
arsenic
iron
phosphorus
•
tin
•
barium
•
lead
potassium
•
vanadium
boron
•
lithium
•
selenium
zinc
•
cadmium
magnesium
•
silver
calcium
manganese
sodium
•
chromium
•
mercury
•
strontium
cobalt
molybdenum
The nonessential, potentially toxic, elements are identified with a "Blue Square ".
The elements which have not been shown to be essential in all plants are identified with a "dark Gray Square ".
FEES - PLANT ANALYSIS
Standard plant analysis
$65.00 per sample
test includes elements in Table I plus nitrogen and chloride
data interpreted by nutrient balance and elemental interactions
FEES - IRRIGATION WATER ANALYSIS
Standard Water Analysis
$75.00 per sample
test includes
pH measurement
Salinity (electroconductivity)
elements listed in Table I
nitrate, chloride, sulfate, bicarbonate, carbonate, phosphate
adjusted SAR (sodium absorption ratio)
