Fertilizers Turfgrass Fertilization Establishing and maintaining turfgrass depends in part upon management of turf care products in a manner to achieve the desired level of turfgrass quality. A part of this overall management is fertilization and maintenance of soil fertility. As with the production of any crop, liming and fertilization of turfgrass should be based on nutrient requirements of the specific turfgrass and soil fertility levels. Fertilizer should be applied (timing, rates and methods) in a manner to maximize efficiency while limiting potential adverse effects on the environment.
Soil Test A sound fertility program should be based upon soil testing. Representative soil samples (4 to 6 inches or as recommended by the soil testing laboratory, with thatch and above-ground turf removed) should be collected (5 to 10 one-inch diameter cores per sample) from areas receiving the same fertility and cultural practices. Analyses should include pH, phosphorus, potassium, and possibly CEC, calcium, magnesium and organic matter. In general, soil pH should be maintained in the 6.0 – 7.0 range and soil phosphorus and potassium in the medium to high soil test range (similar levels to that for field crop production). These general levels are suggested because of a lack of correlation studies that might indicate more specific optimum test levels.
Application Establishment is the best time to correct soil pH or apply P and K needed for soil test buildup. At that time, limestone, acidulation materials, or fertilizers can be mixed into the soil. In general, at establishment apply one lb. of N/1000 ft.2 as urea or diammonium phosphate as part of a complete fertilizer. Maintenance applications can then be made during the life of the turf. Specific fertilizers, rates, and timing of application depend upon the management level, irrigation frequency, desired turf quality, turf use, and clipping removal. Choice of a specific fertilizer will also depend on method of application and physical and chemical characteristics of the material. Nutrients most commonly applied will be the macronutrients (N,P,K) and, although deficiencies are rare, sulfur and possibly micronutrients. Foliar application of iron can enhance quick turf green-up or correct iron deficiency on high pH soils (7.2 to 8.3). Follow label instructions. Iron fertilizers can stain sidewalks, clothes, etc., so be careful with application. Following is a listing of common fertilizers utilized for turf fertilization.
Fertilizers Source
Analysis N
P2 O5
K2O
S
Fe
%r by weight Nitrogen Ammonia nitrate Ammonia sulfate Urea Sulfur-coated urea Phosphorus Diammonium phosphate Triple Super-phosphate Potassium Potassium chloride Potassium sulfate Potasssium magnesium sulfate Potassium nitrate Sulfur Ammonia sulfate Potassium sulfate Calcium sulfate (gypsum) Elemental Sulfur Iron Iron sulfate Iron Chelate
33 21 46 37
0 0 0 0
0 2 0 0
24 12
-
18 0
46 46
0 0
1.4
-
0 0 0 13
0 0 0 0
60 50 22 44
18 23 0.2
-
21 0 0 0
0 0 0 0
0 50 0 0
24 18 17 90
-
-
-
-
12 -
20 9 to 12
Beyond soil buildup, application of N, P, and K will be most influenced by clipping removal or return to the turf. Because of nutrient removal with the vegetative material, a fertilizer source including approximately equivalent N and K2O should be applied when clippings are routinely removed; for example, a 20-4-10 or 18-4-18 analysis. In fact, returning clippings to turf is an excellent method of recycling, avoiding the need for composting or land-fill disposal, and returning available nutrients back to the turfgrass. Fertilization requirements will be less when clippings are returned. Also, blends of N, P, and K at various analyses can be utilized depending upon fertilization needs; a rough guide is to use a 3-1-2, 5-1-2, or 4-1-4 ratio of N-P2O5 – K2O. As a general guide, fertilize low to medium quality turf three to four times per year (with frequency dependent upon N source). Since P and K are immobile in the soil (except for K on very sandy soils), those requirements can be met by application once per year, especially on lower quality turf. If adequate P and K are available in the soil, then fertilizations include only N.
Nitrogen Management Nitrogen management is probably most important in regard to overall success in maintaining a quality turf, while minimizing disease incidence and potential N movement into ground or surface waters. Rate of N application and timing is generally based on turfgrass species, management level, turf use, irrigation frequency, and N fertilizer characteristics. Split the annual rate of nutrient application equally into each application. Do not apply more than one pound of nitrogen in a quick release form at any one application.
Fertilizers Following are tables indicating rates commonly used based on these factors.
TURFGRASS ANNUAL N REQUIREMENTS (lbs. N/1000 sq. ft.) Cool-season species Bentgrass Fine Fescues Common Kentucky Bluegrass Improved Kentucky Bluegrass Perennial ryegrass Tall Fescue Wheatgrass
Desired quality and management level Lower Higher 1 - 3* 3-8 0.5 - 2 2-4 1-2 2-4 1.5 - 3 3-6 2-4 4-6 1-2 3-5 0-2 2-4
Warm-season species Bahlagrass Bermudagrass Buffalograss/Blue Grama Carpetgrass Centipede grass St. Augustine grass Zoysia grass
Lower 0-1 1-4 0-1 1.5 - 3 0-1 2-4 2-4
Higher 2-4 3-8 2-3 4-6 2-4 5-7 5-7
*Lower rates for shorter growing seasons and/or on heavy soils. Higher rates used where growing season is longer; soils are sandy, precipation rates are high; clippings are routinely removed. Source: Dr. Tony Koski - Colorado State University - Cooperative Extension Service
Cool-season turfgrass fertilization schedule* No. Nitrogen Application(s) Per Year 1 2 3 4 (with summer irrigation)
When Early Sept. Early Sept. & Early May Early Sept. & Early May & Late Fall Early Sept. & Early May & Late Fall Mid-June
Make late fall application approximately one week following the final mowing of the season. *Fertilize warm-season turfgrasses at the initiation of growth in spring. If desired, make additional applications monthly during the growing season.
Fertilizers INFLUENCE OF NITROGEN FERTILIZATION ON DISEASE INCIDENCE Severity Increases With Under-fertilization Cool-season turfgrass diseases Anthracnose Dollar Spot Red Thread Rust Warm-season turfgrass diseases Anthracnose Cercospora Leaf Spot Dollar Spot Rust
Severity Increases With Over-fertilization Brown Patch Leaf Spot Melting Out Pythium Blight Brown Patch Gray Leaf Spot Leaf Spot Melting Out Pythium Blight Spring Dead Spot
Source: Dr. Tony Koski - Colorado State University - Cooperative Extension Service
More emphasis is now being placed on enhancing cool-season grass root growth and development rather than just shoot growth. As shoot growth slows in the fall, root growth is accelerating. Fall fertilization thus can enhance turf quality and durability, increase shoot density, improve fall, winter, and spring root growth, enhance plant storage of carbohydrates (energy reserve), as well as provide residual nutrients for early spring growth. Nitrogen is most important for fall fertilization of cool-season grasses. The N form should be a quick release or a slow release type that is not highly dependent upon warm soil temperatures (microbial activity) for release (urea, ammonium sulfate, SCU, IBDU, or short-chain methylene ureas). Fall or late-season fertilization should not be confused with dormant or winter fertilization. Fall fertilization should be done before the turf loses its green color (late August through October or November, depending upon geographic area). Dormant fertilization is application after the turf has lost its green color and is not actively growing. Warm-season grasses should not be fertilized in the fall. Enhancement of rapid-lush spring vegetative growth should be avoided. (This will help reduce disease incidence and summer decline.) This can be accomplished by utilizing fall fertilization and delaying spring N application until early May. Also, limit the application rate of quickly-available N fertilizers to one lb. N/1000 ft. 2 per application or use slow release N fertilizers. Use of a mix containing approximately 25 to 50% quick release and 50 to 75% slow release material will provide both readily available and residual slowly-available N to provide adequate N between fertilizations. Slow release N fertilizers may result in slower greenup (but will provide more even N release and longer residual activity); therefore, higher rates might offset this initial slow greenup (no more than 2 lbs./1000 ft.2 per application). Slow release N sources are longer lasting, have lower burn potential, and provide more uniform growth. Use on sandy soils, such as golf greens, may help lower NO3 leaching. Slow release materials, however, generally are more costly and, therefore, limited to use on high value turf. Sulfur-coated urea usually is not utilized on golf greens because the close mowing and high foot traffic causes coating fracture and, therefore, reduces volatilization control and the slow release effectiveness.
Fertilizers For average-intensity turf, fertilization for color development may be best rather than fertilizing for growth. High intensity or high traffic turfs (golf greens and tees, athletic fields) will require more frequent application to stimulate growth needed for wear tolerance and recovery from injury.
Characteristics of Nitrogen Fertilizers Salt
Fertilizer Name
Analysis
Source of N
Low
Residual N
Index (Per N
Moisture
Temperature
Leaching
Dependence
Response
Activity
Unit)
Potential
Quickly-available N fertilizers Ammonium nitrate
33-0-0
ammonia nitrate
minimum
rapid
4-6 weeks
3.2
high
Ammonim sulfate
21-0-0
ammonia sulfate
minimum
rapid
4-6 weeks
3.3
high
minimum
rapid
4-6 weeks
1.6
high
urea
minimum
rapid
4-6 weeks
1.6
moderate
Ammonia phosphate Urea
diammonium 18-46-0 46-0-0
phosphate
Slowly-available N fertilizers Slow-release sources Sulfur-coated urea
22-38% N
urea
moderate
mod. rapid
10-15 weeks
NA
low
ONCE
24-35% N
urea, nitrate, ammon.
moderate
mod. rapid
15-36 weeks
NA
low
Slow-soluble source IBDU
31-0-0
isobutylidine diurea
high
mod. rapid
10-16 weeks
0.2
mod.-low
Nitroform
38-0-0
ureaformaldehyde
high
slow
10-30 weeks
0.3
very low
FLUF
18-0-0
urea/ureaformaldehyde
moderate
medium
6-10 weeks
NA
low
Nutralene
40-0-0
methylene urea
moderate
medium
7-9 weeks
NA
low
Methylene urea
39-0-0
methylene urea
moderate
medium
7-9 weeks
0.7
low
Coron
28-0-0
urea/methylene ureas
minimal
mod. rapid
7-9 weeks
NA
moderate
N-Sure
28-0-0
triazone/rea sol.
minimal
mod. rapid
6-9 weeks
NA
moderate
Urea-form fertilizers
Natural organic fertilizers Ringer
6-1-0
blood, bone, seed meals
high
medium
10-12 weeks
0.7
low
Sustaine
5-2-4
composted turkey waste
high
medium
10-12 weeks
0.7
low
Milorganite
6-2-0
activated sludge
high
slow
10-12 weeks
0.7
low
Terrene
5-3-0
activated sludge
high
slow
10-12 weeks
0.7
low
Source: Dr. Tony Koski - Colorado State University - Cooperative Extension Service
Fertilizers Greens Grade Fertilizers (SGN 100) Application Rate
Lbs Nutrients/M
Unit Size
Lbs./M
Lbs./A
N
P
K
Nutrient Sources
22-0-22 100% Nutrlene, SOP + Micro Mix
50 lbs.
4.0
174
0.88
0
0.88
Sulfate of potash, methylene urea, micro mix
18-4-18 50% Nutralene SOP + Micro Mix
50 lbs.
4.0
174
0.72
0.20
0.72
Sulfate of potash, ammonium phosphate, urea, methylene urea, micro mix
10-18-2022 50% Nutralene SOP + Micro Mix
50 lbs.
4.0
174
0.40
0.70
0.88
Sulfate of potash, ammonium phosphate, urea, methylene urea, micro mix
0-0-50 Mini Map
50 lbs.
11-52-0 Mini Map (Manufactured Product)
50 lbs.
Chameleon Macro Mix Greens Grade (0-0-6)
40 lbs.
Rate variable according to need.
21-0-0-245
50 lbs.
Rate variable according to need.
Product/ Use Grade
Rate variable according to need. 2.0
87
0.22
1.00
Sulfate of potash 0
3% nitrogen, 1% calcium, 2% magnesium, 15% sulfur, .5% copper, 15% iron, 5% manganese, .5% zinc Ammonium sulfate
Fertilizers Professional Standard Grade Fertilizers (Normal Coverage 12,500 sq. ft.) Application Rate
Lbs Nutrients/M
Product/ Use Grade
Unit Size
Lbs./M
Lbs./A
N
P
K
11-23-2010 All mineral
50 lbs.
4.0
174
0.24
0.92
0.4
Urea, diammonium phosphate muriate of potash
13-13-13 All mineral
50 lbs.
4.0
174
0.52
0.52
0.52
Urea, diammonium phosphate muriate of potash
14-24-9 33% SCU
50 lbs.
4.0
174
0.48
0.96
0.36
SCU, urea, diammonium phosphate, muriate of potash
18-0-6 25% SCU
50 lbs.
4.0
174
0.72
0
1.24
SCU, urea, muriate of potash
19-0-19 75% Ufflex
50 lbs.
4.0
174
0.76
0
0.76
Sulfate of potash, urea, urea stablilized with NBPT & DCD
19-19-19 All mineral
50 lbs.
4.0
174
0.76
0.76
0.76
Urea, diammonium phosphate muriate of potash
25-0-5 All mineral
50 lbs.
4.0
174
1.00
0
0.20
Urea, muriate of potash
25-0-5 25% Ufflex
50 lbs.
4.0
174
1.00
0
0.20
Ammoniated phosphate, urea, muriate of potash, urea stablilized with NBPT & DCD
25-0-5 25% SCU
50 lbs.
4.0
174
1.00
0
0.20
SCU, urea, muriate of potash
25-0-5 33% SCU, 2% Fe
50 lbs.
4.0
174
1.00
0
0.20
SCU, urea, muriate of potash sulfur with iron
25-0-5 50% SCU
50 lbs.
4.0
174
1.00
0
0.20
SCU, urea, muriate of potash
25-3-10 25% SCU
50 lbs.
4.0
174
1.00
0.12
0.40
SCU, urea, diammonium phosphate, muriate of potash
Nutrient Sources
Fertilizers Professional Standard Grade Fertilizers (continued) Application Rate
Lbs Nutrients/M
Unit Size
Lbs./M
Lbs./A
N
P
K
25-3-10 33% SCU, 2% Fe
50 lbs.
4.0
174
1.00
0.12
0.40
SCU, urea, diammonium phosphate, muriate of potash sulfur with iron
30-3-10 50% Ufflex
50 lbs.
3.3
145
1.00
0.10
0.30
Ammoniated phosphate, urea, muriate of potash, urea stablilized with NBPT & DCD
34-0-5 All mineral
50 lbs.
3.0
135
1.00
0
0.20
SCU, urea, muriate of potash
34-0-5 25% SCU
50 lbs.
3.0
135
1.00
0
0.20
SCU, urea, muriate of potash
34-0-5 50% SCU
50 lbs.
3.0
135
1.00
0
0.20
SCU, urea, muriate of potash
Product/ Use Grade
Nutrient Sources
Fertilizers Turf Fertilizers with Pre-emergence Herbicide Application Rate
Lbs. Nutrients/M
Unit Size
Lbs./M
Lbs./A
N
P
K
11-23-10 w/3.71% Tupersan
25 lbs.
2.5
109
0.26
0.56
0.25
Urea, diammonium phosphate, muriate of potash
18-0-6 25% SCU w/.86% Team Pro
50 lbs.
4.0
174
0.72
0
0.24
SCU, urea, muriate of potash
20-0-4 25% SCU w/.28% Barricade
50 lbs.
4.0
174
0.80
0
0.16
SCU, urea, muriate of potash
19-0-6 25% SCU w/.38% Barricade
50 lbs.
4.0
174
0.76
0
0.24
SCU, urea, muriate of potash
13-0-5 25% SCU w/.10% Dimension
50 lbs.
4.0
174
0.52
0
0.20
SCU, urea, muriate of potash
13-0-5 25% SCU w/.125% Dimension
50 lbs.
4.0
174
0.52
0
0.20
SCU, urea, muriate of potash
13-0-5 25% SCU w/.15% Dimension
50 lbs.
4.0
174
0.52
0
0.20
SCU, urea, muriate of potash
13-0-5 40% SCU w/.125% Dimension
50 lbs.
4.0
174
0.52
0
0.20
SCU, urea, muriate of potash
18-0-6 50% SCU w/.125% Dimension
50 lbs.
4.0
174
0.52
0
0.24
SCU, urea, muriate of potash
Product/ Use Grade
Nutrient Sources
Fertilizers Turf Fertilizers with Pre-emergence Herbicide (continued) 18-0-6 25% Flexx w/.10% Dimension
50 lbs.
4.0
174
0.52
0
0.20
SCU, urea, muriate of potash
Professional Turf Fertilizers with Post-emergence Herbicide 16-0-8 25% SCU w/Viper
50 lbs.
4.0
174
0.64
0
0.32
SCU, urea, muriate of potash
20-0-5 25% SCU w/Trimec
50 lbs.
4.0
174
0.80
0
0.24
SCU, urea, muriate of potash
18-0-6 25% SCU w/Mill
50 lbs.
4.0
174
0.80
0
0.24
SCU, urea, muriate of potash
Turf Professional Fertilizers with Insecticide Application Rate Product/ Use Grade 0-0-7 w/.20% Mallet
Lbs Nutrients/M
Unit Size
Lbs./M
Lbs./A
N
P
K
Nutrient Sources
50 lbs.
3.5
153
0
0
0.24
Muriate of potash
50 lbs.
3.5
153
0.70
0
0.18
SCU, urea, muriate of potash
50 lbs.
3.5
153
0.74
0
18
SCU, urea, muriate of potash
Bag treats 14,200 sq. ft.
15-0-5 25% SCU w/.20% Mallet Bag treats 14,200 sq. ft.
21-0-5 50% SCU w/.20% Mallet Bag treats 14,200 sq. ft.
Fertilizers Green Yard Turf and Garden Grower Homogeneous Fertilizer Application Rate Product/ Use Grade 13-13-13-75
Lbs Nutrients/M
Unit Size
Lbs./M
Lbs./A
N
P
K
50 lbs.
10
435
1.3
1.3
1.30
Nutrient Sources
Specialty Products Product/ Use Grade HYDREXX (Urea Nitrogen Stabilizer) Sprint 300 Turf Micro Mix
Application Rate Lbs Nutrients/M Unit Size Lbs./M Lbs./A N P K Nutrient Sources 20 X 8 oz. NBPT & DCD packet, 25 lbs., 50 lbs. 5 lbs. 10% chelated iron - DPTA 50 lbs. 1%B, 2.5%Cu, 25%Fe, 3%Mn, .025%Mo, 2.5%Zn
Pelletized Lime & Gypsum Product Pel-lime Hi-Cal Fairway Grade Pel-lime Hi-Cal Greens Grade Pel-lime Dolo Fairway Grade Pel-lime Dolo Greens Grade Gypsum (Cal-Sul) Fairway Grade Gypsum (Cal-Sul) Greens Grade Also available in 2000 lb. bags and bulk.
Unit Size 50 lbs. 50 lbs. 50 lbs. 50 lbs. 50 lbs. 50 lbs.
Pelleted fine grind limestone Pelleted fine grind limestone Pelleted fine grind limestone Pelleted fine grind limestone Pelleted calcium sulfate Pelleted calcium sulfate
Fertilizers Straight Grade Fertilizers Product
Unit Size
Uses
46-0-0 Urea 46-0-0 Spray Grade Urea (Prilled) 46-0-0 UFLEXX Granular 47-0-0 UMAXX Sulfur Coated Urea
50 lbs. 50 lbs. 50 lbs. 50 lbs. 50 lbs.
Aluminum Sulfate Granular 0-0-50 (SOP) Sulfate of Potash
50 lbs. 50 lbs.
0-0-60 White Potash Granular MOP Calcium Nitrate Granular (15.5-0-0-26Ca.) Calcium Nitrate Greenhouse grade (15.5-0-0-26Ca.) Potassium Nitrate Greenhouse grade (13-0-6) limited Potassium Nitrate Mini Prill (13-0-6) limited Ammonium Sulfate Granular (21-0-0-245) limited
50 lbs. 50 lbs.
Rates vary according to need. Standard grade. Urea Rates vary according to need. Standard grade. Rates vary according to need. Standard grade. Analysis varies by manufacturer. 38-0-0-15S, 39-0-0-12S,42-0-0-5S. Rates vary according to need. Standard grade. Aluminum sulfate. Rates vary according to need. Standard grade, greens grade, or soluble grade. Rates vary according to need. Standard grade. Rates vary according to need. Standard grade.
50 lbs.
Rates vary according to need. Standard grade.
50 lbs.
Rates vary according to need. Standard grade.
50 lbs.
Rates vary according to need. Standard grade.
50 lbs.
Rates vary according to need. Standard grade.
Fertilizers Organic and Organic Blend Fertilizers Unit Size
Lbs./M
Lbs./A
N
P
K
16-2-3 44% SCU, SOP Organic CPM
50 lbs.
4.0
174
0.64
0.08
0.12
6-2-0 Milorganite Classic
50 lbs.
Rates vary according to need. Standard Grade.
Activated Sewage Sludge
6-2-0 Milorganite Greens Grade
50 lbs.
Rates vary according to need. Greens Grade.
Activated Sewage Sludge
BOV-A-MURA
2.5 gal.
Rates vary according to need.
Product/ Use Grade
Nutrient Sources Urea, ammonium sulfate, poultry manure, bios & lids, sulfate of potash
Liquid Fertilizers Unit Size
Application
17-0-5
Bulk or 250 gal. Mini Bulks
Great for the lawn care professional. Base mix.
30-0-0 50% NBN
Bulk or 250 gal. Mini Bulks 2 x 2.5 gals.
Great product to mix to dial in your specific summer application.
NBN + Nonburning nitrogern
Fertilizers Soluble Fertilizers Application Rate Product/ Use Grade
Unit Size
Lbs./M
Lbs Nutrients/M
Lbs./A
N
P
K
Nutrient Sources
0-0-50 Soluble SOP
50 lbs.
Rate variable according to needs. Provides potassium & sulfur. Use to make liquid formulations.
Potassium sulfate
0-0-62 Soluble SOP
50 lbs.
Rate variable according to needs. Provides potassium. Use to make liquid formulations.
Muriate of potash
0-0-26 Phyte-Off
2 x 2.5 gals.
1.0 to 3.0 oz./1000 sq. ft. every 14 days.
Potassium phospite
Rate variable according to needs.
Ammonium phosphate, ammonium sulphate, potassium nitrate, magnesium sulphate, urea, borox, sodium molybdate, and the EDTA form of copper, iron, manganese, and zinc
16-45-7 25 lbs. (Plant Marvel Brand)
28-5-18 w/Fe Bentgrass Formula
25 lbs.
0.90
39
0.25
0.06
0.16
Urea, nitrate, ammonical N, ammonium phosphate, Fe., minors
Rate Chart To Achieve Desired "N" Per Square Foot Ounces of Fertilizer Per 1,000 square feet to achieve Formula 1/10 lb. 1/8 lb. 10-20-30 16.0 20.0 12-31-14 13.3 16.7 20-20-20 8.0 10.0 25-0-25 6.4 8.0 28-18-8 5.7 7.1 28-5-18 2%Fe 5.7 7.1
1/4 lb. 40.0 33.3 20.0 16.0 14.3 14.3
1/2 lb. 80.0 66.7 40.0 32.0 28.5 28.5
1 lb. 160.0 133.3 80.0 64.0 57.1 57.1
Fertilizers Rate Chart (continued) To Achieve Desired "N" Per Square Foot Ounces of Fertilizer Per 1,000 square feet to achieve Formula 1/10 lb. 1/8 lb. 12-31-14 5.2 4.4
1/4 lb. 12.9
1/2 lb. 25.8
1 lb. 51.6
Recommended Fertilizer Applicate Rate: 1/8 to 1/4 of actual nitrogen per 1,000 square feet of turf per application, with repeat applications every week, two weeks or as turf shows need. Normal dilution rate for any formula is 1 pound of product to 10 to 20 gallons of water. Any formula may be applied in a concentrated solution of 1 pound to 2 or 3 gallons of water, providing it is well soaked into the soil immediately after applications or that soil moisture is very high.
Fertilizers Biostimulants Product
Unit Size
Rate
2.5 gal. and 55 gal.
Greens & Tees-1 oz./1000 sq. ft. every 2 weeks. Fairways-1.5 qt./ acre every 2 weeks. Over seeding2 oz./1000 sq, ft. after germination.
ROOTS Ca 8%
2.5 gal.
Roots 1>2>3 Premix
2.5 gal.
Greens, tees, fairways, sports turf, over seeding and sodding-3 oz./ 100 sq. ft. every 2 weeks or 6 oz./ 1000 sq. ft. every 4 weeks. Greens, tees, and over seeding-use 1 oz./1000 sq. ft. every 2 weeks.
endoROOTS
50 lbs.
ROOTS AGRI-plex
M-ROOTS
25 lbs.
ROOTS
2.5 gal.
ironROOTS
2.5 gal.
ROOTS KCS
2.5 gal.
Aerification, seeding and soddinguse 7 to 10 lbs./1000 sq. ft.
Sod/seeding-use 10 lbs./1000 sq. ft. For trees, shrubs and containersapplication is based on container or bulb size, so check label. Turf use-1.5 to 2.0 oz./1000 sq. ft. Trees and shrubs injection root feeding-use 1 gal./100 gal. water. Foliar spray-use 32 oz./100 gals. water. Turfgrass-1 oz./1000 sq. ft. every 2 weeks. Seeding, over seeding, and sod installation-6 oz./1000 sq. ft. after seed germination or sod installed. Turf use-3 oz./1000 sq. ft. or 1 gal./acre.
Description A 100% chelated complete micronutrient package that provides turf grass, shrubs, and trees with the necessary nutrients they need to maintain optimum health and appearance during the growing season. A fully chelated 8% calcium supplement fertilizer with soluble potassium of turf and ornamental plants. A proprietary formulation of low analysis fertilizer with chelated micronutrient plus proprietary blend of patented micobial cultures. Fine grade dryROOTS with 200,000 spores and propaguules of endomycorrhiza (VAM) and six strains of Novozymeys 1 miocrobes. A blend of natural organic ingredients in dryROOTS plus 18 species of endo and ectomycorrhizo. Blend of plant nutrients that provides a 7% concentration of fully chelated iron, plus manganese and potassium.
A fully chelated iron fertilizer and bio-stimulant that should be used to supplement a sound fertilizer program. A proprietary formula of silica, potassium, and humus acids as the active ingredients.
Fertilizers Biostimulants (continued) Launch
2.5 gal.
Seeding, sprigging, hydro seeding and sod use 32 oz./1000 sq. ft.
Launch Dry
50 lbs.
Apply 5 to 7 lbs./1000 sq. ft.
mycorrhizaROOTS
24 x 16 oz.
1 packet/100 to 200 gals. of water.
Biostimulant and microorganism activator for quick establishment of new or remodeled turf or sod. Combines biostimulant benefits of plant hormones humic acids with dry manure extract. A soluble/injectable form of ROOTS concentrate combined with mycrorrhiza.
