SOIL_TEST_EXAMPLE_-_A17.pdf
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- Attached to
- REQUEST FOR PROPOSAL FOR LANDSCAPE & PARK MAINTENANCE SERVICES FOR SPORTS COMPLEX FACILITY
- Solicitation number
- 2026-RFP-040
- Issued by
- Riverside County, California
About this file
This is a soil analysis report prepared by Waypoint Analytical for a turf and landscaping project, relevant to the City of Palm Desert's REQUEST FOR PROPOSAL FOR LANDSCAPE & PARK MAINTENANCE SERVICES FOR SPORTS COMPLEX FACILITY. The report documents soil testing conducted on March 14, 2019, for an area requiring existing turf fertilizer and amendment recommendations. The soil analysis indicates slightly alkaline conditions (pH 7.3) with high lime content suitable for most plants and turfgrass varieties. Key findings show low nitrogen and phosphorus levels, fair sulfate levels, and sufficient major nutrients overall. Micronutrient analysis reveals sufficient copper, manganese, and iron, with fair zinc levels. The report recommends nitrogen, phosphorus, and sulfate fertilizers applied as top dressing with thorough irrigation, preferably after aeration. Recommended top dressing specifications include 5 pounds of Ammonium Sulfate (21-0-0) and 1 pound of Triple Superphosphate (0-45-0) per 1000 square feet.
The maintenance recommendations outline a fertilization program for new turf from seed, with initial light fertilization using 16-6-8 at 4 pounds per 1000 square feet after first mowing, followed by a nitrogen program applying 5 pounds of ammonium sulfate (21-0-0) per 1000 square feet at 45 to 60-day intervals until establishment. Once turf is well established, fertilization frequency should decrease based on desired color and growth rate, with spring and fall applications of complete fertilizer such as 15-15-15 to maintain adequate phosphorus and potassium levels. The report provides guidance on identifying and addressing potential micronutrient deficiencies through symptoms including interveinal chlorosis, stunted growth, and necrotic leaf margins, with recommendations for chelated micronutrient product applications if symptoms appear after turf establishment.
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Text version
4741 East Hunter Ave., Ste. A Anaheim CA 92807
(714) 282‐8777 (714) 282‐8575 fax www.waypointanalytical.com
Anaheim Office March 20, 2019 Report 19-
Background
One sample was processed on March 14, 2019 identified as soil from areas where existing turf requires fertilizer and amendment recommendations. The samples were analyzed for horticultural suitability and fertility. The results of the analyses are attached.
Analytical Results and Comments
The reaction of the soil is slightly alkaline at a pH of 7.3 with high qualitative lime present. This is within the range preferred by most plants, including many varieties of turfgrass. The high lime present will help buffer the soil in the alkaline range.
Salinity (ECe), sodium and boron are safely low. The sodium adsorption ratio (SAR) shows sodium adequately balanced by soluble calcium and magnesium; this balance is important for soil structure quality, which relates to the rate at which water infiltrates the soil.
In terms of soil fertility, nitrogen and phosphorus are low and sulfate is fair. All of the other major nutrients are sufficient for proper plant nutrition at this time. Of the micronutrients; copper, manganese and iron are sufficient and zinc is fair.
Recommendations
Nitrogen, phosphorus and sulfate fertilizers are recommended. These may be applied as a top dressing and thoroughly irrigated in. I f these areas have not been aerated recently, after aeration would be the best time to apply fertilizers.
The primary symptom of micronutrient deficiencies in turfgrass is a general yellowing of leaves with veins remaining green. I ron deficiencies typically appear initially as interveinal chlorosis in new leaves, then on older leaves as deficiency worsens. As the condition worsens leaves may appear yellow to almost white.
Manganese deficiency also appears as interveinal chlorosis and as the deficiency worsens, leaves develop necrotic margins and spots. Leaves may be smaller and less distinctly shaped. Zinc deficiency symptoms include interveinal chlorosis, stunted growth, and leaves may form rosettes at ends of shoots. I f these symptoms are present after turf establishment they may be treated with an application of a chelated micronutrient product at the manufacturer’s recommended rate.
Anaheim Office Report 19-
4741 East Hunter Ave., Ste. A Anaheim CA 92807
(714) 282‐8777 (714) 282‐8575 fax www.waypointanalytical.com
Top Dressing for Existing Turfgrass:
The following materials should be evenly broadcast and thoroughly irrigated in:
Amount per 1000 Square Feet 5 pounds Ammonium Sulfate (21-0-0) 1 pound Triple Superphosphate (0-45-0)
Maintenance
For turf areas, new turf from seed should receive a light fertilization after the first mowing with 16-6-8 applied at a rate of 4 pounds per 1000 square feet. The area may then be maintained with primarily a nitrogen program of applying 5 pounds of ammonium sulfate (21-0-0) per 1000 square feet. Treatment should be at 45 to 60 day intervals until the turf becomes well established. Once the turf is well established, the frequency of fertilization should be decreased depending on color and rate of growth desired. In the spring and fall substitute a complete fertilizer such as 15-15-15 to help insure continuing adequate phosphorus and potassium. I f grass clippings remain after mowing, this can also help return nutrients to the soil.
I f we can be of any further assistance, please feel free to contact us.
Annmarie Lucchesi alucchesi@waypointanalytical.com
Emailed 3 Pages:
Sample Id :
SOIL ANALYSIS
Send To: Project : 19-
03873 03/19/2019 03/14/2019
02555
Report No :
Cust No :
Date Printed :
Date Received :
Page :
Lab Number :
EXTRACTABLE NUTRIENTS
NH4-N
Total Exchangeable Cations(TEC)
Very Low Low Medium Optimum Very High
SOIL TEST RATINGSSufficiency Factor NO3-N meq/kg174
11 ppm
4 ppm
0.3
0.6
1.2 ppm ppm ppm15
2.1 meq/L 0.7 1040
0.15 ppm 0.5 709
Result
Available-N
Phosphorus (P) - Olsen
Potassium (K)
Boron (B) - sat. ext.
Sulfate - sat. ext.
Exch Aluminum
Iron (Fe) 47 ppm 0.6 851 Manganese (Mn) 9 ppm 0.5 756 Zinc (Zn) 4 ppm 0.4 709 Copper (Cu) 2.1 ppm 0.9 1040 Magnesium - sat. ext. 2.6 meq/L
Magnesium (Mg) 566 ppm 1.5 1181 Calcium - sat. ext. 4.9 meq/L
Calcium (Ca) 2460 ppm 0.9 1087 Potassium - sat. ext. 0.2 meq/L
Cu, Zn, Mn and Fe were analyzed by DTPA extract.
Weight Percent of Sample Passing 2mm Screen
Half Sat
PARTICLE SIZE ANALYSIS
27 %
Gravel Sand Coarse 5-12
Fine 2-5
Very Coarse 1-2
Coarse 0.5-1
Med. to Very Fine 0.05-0.5
Organic Matter
Silt .002-.05
Clay 0-.002
USDA Soil Classification
Moderately Alkaline
Strongly Acidic
Moderately Acidic
Slightly Acidic
Slightly Alkaline
Strongly Alkaline
High
Neutral
Qualitative LimeResult pH 7.3 s.u.
SATURATION EXTRACT - PLANT SUITABILITY
Effect on Plant Growth
Only Tolerant Crops Satisfactory
Few Crops Survive
Result dS/m ppm meq/L
Boron (B)
Sodium Adsorption Ratio (SAR) *
Salinity (ECe)
Sodium (Na)
Chloride (Cl)
Carbonate (CO3)
Bicarbonate (HCO3)
Fluoride (F)
0.7
0.93
0.15
1.8
Many Crops Restricted
Negligible Sensitive Crops Restricted
* Structure and water infiltration of mineral soils potentially adversely affected at SAR values higher than 6.
Test
Test
Test
Graphical interpretation is a general guide. Optimum levels will vary by crop and objectives.
File details come from the government source that posted it. Updated .