Harrell's Granular Fertilizer Guide

GRANULAR FERTILIZER GUIDE

INTERPRETING A FERTILIZER LABEL

DEFINITIONS

SIZE GUIDE NUMBER (SGN) Describes the average size of fertilizer granules in a fertilizer blend. SGN of a fertilizer blend is equal to the average diameter of individual fertilizer granules in millimeters multiplied by 100. + SGN >200: Referred to as reg, granular, rough, or lawn grade fertilizer. Often a more economical option, fertilizer blends with larger SGN values should not be applied to turf maintained at less than a 0.5” mowing height and will have fewer fertilizer granules per square foot compared to fertilizer blends with a smaller SGN. + SGN 100 – 200: Referred to a mini grade. Mini grade fertilizer blends provide a greater number of fertilizer granules per square foot compared to granular grade blends and are appropriate for application to turf maintained between 0.25” and 0.50”. + SGN <100: Referred to as micro or greens grade. Micro grade fertilizer blends are appropriate for applications to turf maintained at <0.25” and provide the maximum number of fertilizer granules per square foot.

BULK DENSITY

Refer red to as ‘Densit y’ on Harrell’s fertilizer labels, bulk density is the mass of fertilizer per unit of volume. Bulk density influences the spread pattern of a fertilizer blend and how well the blend flows through a granular fertilizer spreader.

GUARANTEED ANALYSIS

A listing of a ll nutrients con tained in the bag on a percent weight basis.

DERIVED FROM STATEMENT

A list of the specific raw material ingredients used to create the fertilizer blend.

BATCH #

Manufacturing lot number for the fertilizer blend.

CONTROLLED-RELEASE INFORMATION

Units of controlled-release fertilizer in a fertilizer blend.

SALT INDEX

A numeric value which indicates the tendency of a fertilizer material to increase the concentration of salts in the soil solution relative to another fertilizer material. Higher salt index values indicate a higher tendency to increase salts in the soil solution.

POLYON VS. SLOW-RELEASE FERTILIZER

POLYON controlled-release fertilizer and slow-release fertilizers (SRFs) both provide nutrients over time but differ in their release mechanisms and precision. POLYON uses a proprietary polymer coating applied through a very specialized and tightly controlled manufacturing process to regulate nutrient release, allowing for predictable and consistent nutrient release tailored to specific environmental conditions and timeframes. In contrast, SRFs often rely on biological decomposition of organic or synthetically derived materials with longevity of nutrient release dependent on soil microbial activity or soil moisture. This difference makes POLYON more consistent and predictable than alternative SRFs.

POLYON is manufactured to include the following properties:

+ Each granule is coated with a homogenous layer of a proprietary polymer.

+ The proprietary POLYON polymer provides consistency, predictability, and control.

+ POLYON is highly resistant to damage, retaining its controlled-release characteristics after blending, shipment, and application.

POLYON ® CONTROLLED-RELEASE FERTILIZER

Harrell’s is the exclusive US formulator and distributor of POLYON® controlled-release fertilizer. POLYON is engineered to provide nutrients over time at a predictable rate under specified conditions. With POLYON, nutrients are released in a controlled, predictable manner over a specified period of time with durability that ensures consistent, predictable performance even after blending, shipping, and application.

+ POLYON reduces the potential for environmental loss of applied nutrients + POLYON can help optimize the efficient use of economic and labor resources. + Custom blending allows for matching technology with agronomic needs

HOW DOES POLYON ® WORK? POLYON controlled-release fertilizer works through a patented technology that uses a reactive layers coating (RLC) and superior bonding properties manufacturing process to deliver nutrients gradually over a predetermined period.

HERE’S HOW IT WORKS

+ The predictable and consistent POLYON release

POLYMER COATING Each granule of POLYON fertilizer is encapsulated in a durable polymer coating. This coating acts as a barrier that controls how quickly water can penetrate the granule and begin the release process. MOISTURE ACTIVATION When POLYON controlled-release fertilizer is applied and exposed to moisture, water slowly permeates the polymer coating and dissolves the nutrient substrate. This interaction starts the nutrient release process. NUTRIENT RELEASE Once water dissolves the nutrient substrate a nutrient solution is created. The nutrient solution then gradually diffuses through the POLYON coating into adjacent soil for plant uptake. The release rate is controlled by the thickness of the polymer coating and air temperature. TEMPERATURE SENSITIVITY POLYON nutrient release accelerates as air temperatures rise, synchronizing nutrient release with plant growth. This ensures nutrients are available when a plant requires them the most. EFFICIENCY The POLYON controlled-release mechanism minimizes environmental nutrient loss through leaching and volatilization, providing a more efficient nutrient supply to plants over an extended period of time.

mechanism allows for fewer fertilizer

applications and reduces

environmental impact, making POLYON an efficient choice for turfgrass, horticulture, and agricultural applications.

FACTORS THAT AFFECT POLYON NUTRIENT RELEASE

COATING THICKNESS POLYON release longevity is dependent on the thickness of the polymer coating. As polymer coating thickness increases, longevity increases. POLYON coating thickness is controlled via a highly specific and tightly controlled manufacturing process.

Reactive-Layers Coating

POLYON Release Factors Effect of Coating Thickness

Nutrient release longevity increases as coating thickness increases

Polymer Coating Thickness

Effect of POLYON Coating Thickness on Nutrient Release at Constant 86° F

Effect of POLYON coating thickness on nutrient release. Percent release curves represent the release of POLYON 44-0-0, POLYON 43-0-0, and POLYON

42-0-0 when maintained at a constant temperature of 86F. A lower nitrogen analysis

WEEKS AFTER APPLICATION

indicates a thicker POLYON coating compared to a different POLYON

material. As POLYON coating thickness increases, release longevity increases.

POLYON 44-0-0

POLYON 43-0-0

POLYON 42-0-0

AIR TEMPERATURE

POLYON nutrient release accelerates as air temperatures rise, synchronizing nutrient release with plant growth. This ensures nutrients are available when a plant requires them the most.

HERE’S HOW IT WORKS

INCREASED DIFFUSION AT HIGHER TEMPERATURES As air temperature rises, the POLYON coating allows nutrients to diffuse into surrounding soil at a more rapid rate. ALIGNMENT WITH PLANT GROWTH Plant growth typically accelerates as air temperatures rise. POLYON is designed to release nutrients more rapidly when temperatures rise, ensuring that adequate nutrition is available when plants need the nutrients most.

SLOWER RELEASE IN COOLER TEMPERATURES In cooler conditions, nutrient diffusion through the POLYON coating slows down. This means that nutrient release is lower, aligning with reduced plant growth during colder seasons. TEMPERATURE-SENSITIVE DESIGN The POLYON coating is engineered to respond predictably to air temperature. This allows POLYON fertilizer blends to release nutrients at a controlled rate over a specified period of time.

POLYON Release Factors Effect of Temperature

20 18 16 14 12 10

Granular Grade Materials

44-0-0 43-0-0 42-0-0 41-0-0

8 6 4 2 0

100

Temperature (F)

SOIL MOISTURE

Moisture plays a critical role in POLYON nutrient release. Here is how moisture impacts the release rate:

HERE’S HOW IT IMPACTS

WATER PENETRATION For POLYON to release nutrients, moisture (usually from rain or irrigation) must penetrate the polymer coating surrounding the fertilizer substate. Water gradually seeps through the coating, dissolving the nutrients inside the granule. NUTRIENT DISSOLUTION Once moisture permeates the POLYON coating, it dissolves the fertilizer substrate contained within the POLYON coating. The dissolved substrate forms a nutrient solution inside the POLYON coating.

DIFFUSION OF NUTRIENTS After the fertilizer substrate is dissolved, the nutrient solution begins to move across the POLYON coating into the surrounding soil via osmotic diffusion. Moisture enables this diffusion by helping carry the dissolved nutrients out of the granule at a controlled rate. SOIL MOISTURE CONTENT Excessive soil moisture does not impact POLYON nutrient release. If soil moisture is above the minimum level to facilitate nutrient release, additional soil moisture will not impact nutrient release speed.

In summary, moisture is essential for initiating and sustaining the nutrient release from POLYON.

POLYON Release Factors Effect of Moisture

H 2 O

+ Soil moisture is required for release + Rainfall or irrigation is recommended following application. + Excessive soil moisture does not affect nutrient release rate.

N N N

N N

H 2 O

N N N N N

N N N

N N

UREA

N N

Polymer

N N

N N N N

N N N

N N

N N N

N N

HOW IS POLYON MADE TO BE BETTER

+ Homogenous Polymer Coating + Tenure and experience of manufacturing team + Ongoing investment in facility upgrades + Dedicated R&D and quality control team + Hold, Test, Release Quality Control Program

Harrell’s offers custom-blended POLYON® fertilizer solutions that deliver the ideal release rates and nutrients to address your unique needs. We’re able to do this because we own the largest inventory of homogeneous substrates and professional blending components in the industry.

Polyon 41

UREA

Homogenouse Polymer Coating

PREDICTING NUTRIENT RELEASE WITH THE POLYGRAPH ®

TURFGRASS: GOLF COURSE Harrell’s proprietary POLYOGRAPH technology is the ultimate granular fertilizer planning tool for agronomic programs. POLYGRAPH accurately predicts weekly nutrient release based on the ingredients of a fertilizer blend, application date, application rate, and geographic location.

NITROGEN CALCULATIONS

Charlotte, North Carolina United States

Charlotte , North Carolina

INPUTS

OUTPUTS

NITROGEN THRESHOLD

PLANT RESPONSE

Product List Custom Fertilizer Analysis (%) 30 0

Quick Release (%):

lbs N / 1000 ft² / week

Warm Season Turfgrass

0.1

Average release/week:

0.15

Maximum Growth

Particle Size Regular Polyon Grade 43 0

0.12

Optimal Growth

Product longevity (weeks):

0.09

Greening Effect

Polyon % 100

0.06

Hold Color

217.80 (lbs/acre) 5 (lbs/1000 ft²)

Product spread rate:

0.04

Minimal Growth

Nitrogen Application Rate lbs N / 1000 ft²

1.5

Grass Type: Warm Season

App Date 04/14/25

3.27

Total tons needed:

Acres to Treat 30 Temperature Correction 0 F

130.68

# of 50 lb bags needed:

Harrellʼs and the Harrellʼs logo are trademarks of Harrellʼs LLC, POLYON®, the POLYON logo, POLYGRAPH® and the POLYGRAPH logo are trade marks of Harrellʼs Coatings Solutions LLC in the United States and may be registered in other countries. ©2019, Harrellʼs LLC

REQUEST A POLYGRAPH DEMO

CUSTOM-BLENDING & COMBINATION PRODUCTS

Custom blending fertilizer refers to the process of creating a fertilizer mix that is tailored to meet specific nutrient needs for a particular type of soil, crop, or agronomic condition.

Rather than using a standard, off-the-shelf product, Harrell’s Territory Managers can design a custom blend for any agronomic scenario by mixing raw materials to achieve precise nutrient ratios that optimize plant growth, yield, and quality.

A custom blend can incorporate pesticides to create a fertilizer mix which provides plant nutrition and pest control in a single application, saving time, labor, and reducing the need for multiple applications.

For example, a custom blend might include a pre-emergent herbicide mixed with fertilizer to promote healthy turf growth while controlling weeds. Combination products are commonly used to provide both plant nutrition and pest protection in one application, enhancing efficiency for applicators.

RAW MATERIALS The effectiveness of any granular fertilizer blend depends on the quality and composition of its raw materials. Each component plays a specific role in supporting plant health, soil enrichment, and nutrient availability. The chart below provides a breakdown of the key raw materials commonly used in granular fertilizers.

NITROGEN Raw Material

N P K Ca Mg S Fe Mn B Cu Mo Zn Granular

Mini

Micro

Activated Sludge - Biolsolids

1.25

Ammonium Sulphate

Calcium Nitrate

15.5

Crystal Green

Di-Ammonium Phosphate Methylene DiUrea 40-0-0

18 46

Milorganite

1.2

Mono-Ammonium Phosphate Mono-Ammonium Phosphate

10 40 11 52

Nature Safe 5-6-6 Nature Safe 8-3-5 Nature Safe 13-0-0

5 8

6 6 5 1.5 4 3 5 3 2.2 4

13 41 42 43

1.25

POLYON 41 POLYON 42 POLYON 43 POLYON 43.5

43.5

POLYON 44

POLYON Mono-Ammonium Phosphate POLYON Super K 10-12 Mo

10 48

11 11 46 46 46 39 38 21 40 22 21

43 43

Potassium Nitrate

UFLEXX UMAXX

Urea

Urea Formaldehyde Urea Formaldehyde

Yara 21-7-14 Yara AMIDAS

7 14

5.1 5.5

Yara NK GREEN Yara Turf Royale

7 14

5.1

*Colored boxes within the Granular, Mini, and Micro columns indicate the material in the same row is an option for custom fertilizer blending.

Not all materials are available in every market or geography. Please contact your local Harrell’s rep to understand what is available.

PHOSPHORUS Raw Material or Blend Component

N P K Ca Mg S Fe Mn B Cu Mo Zn Granular Mini Micro

Activated Sludge - Biolsolids

5 4 5 28 18 46

1.25

Crystal Green

Di-Ammonium Phosphate

Milorganite

6 2

1.2

Mono-Ammonium Phosphate Mono-Ammonium Phosphate

11 52 10 40

Nature Safe 5-6-6 Nature Safe 8-3-5

5 6 6 5 1.5 4 8 3 5 3 2.2 4

POLYON Mono-Ammonium Phosphate

10 48

Yara 21-7-14

21 7 14 21 7 14

5.1 5.1

Yara Turf Royale

POTASSIUM Raw Material or Blend Component

N P K Ca Mg S Fe Mn B Cu Mo Zn Granular Mini Micro

Harrell's K-CalMAX

24 10 6 17

K-Mag

22 62

10.5 21

Muriate of Potash Nature Safe 5-6-6 Nature Safe 8-3-5

5 6 6 5 1.5 4 8 3 5 3 2.2 4

POLYON 0-0-50 Micro Sulphate of Potash POLYON 0-0-51 Mini Sulphate of Potash

50 51 57 58 18 45 43 43 50 51 52 46

17 15

POLYON 0-0-57 Muriate of Potash POLYON 0-0-58 Muriate of Potash

POLYON K-Mag

9 18

POLYON Sulphate of Potash 8-9 Mo

POLYON Super K 10-12 Mo

11 11

Potassium Nitrate Sulphate of Potash Sulphate of Potash Sulphate of Potash

17 17 18

Triple Superphosphate

Yara 21-7-14

21 7 14

5.1

Yara NK GREEN Yara Turf Royale

21 7 14

5.1

CALCIUM Raw Material or Blend Component

N P K Ca Mg S Fe Mn B Cu Mo Zn Granular Mini Micro

Calcium Nitrate

15.5

Dolomitic Limestone

18 10.1

Gypsum Gypsum

20 17

16 14

Harrell's CalMAX

36 0.3

Harrell's CalMAX G Harrell's K-CalMAX

24 10 6 17

Hi-Cal Limestone

30 1

Milorganite

6 2

1.2

Nature Safe 5-6-6 Nature Safe 8-3-5

5 6 6 5 1.5 4 8 3 5 3 2.2 4

MAGNESIUM Raw Material or Blend Component

N P K Ca Mg S Fe Mn B Cu Mo Zn Granular Mini Micro

CalMAX

36 0.3

CropMag 36

36 6

Crystal Green

5 28

Dolomitic Limestone

18 10.1

Emerald Plus (Kieserite) Granular

15.7 16

GG Micro Base

4.8

17 2.4 14 0.5

Granular Vigiron

Harrel's K-CalMAX Hi-Cal Limestone

24 10 6 17

30 1

K-Mag

11 22

Magnesium Sucrate

Manganese Sulphate Mini

31.5

Mn OxySulfate

14 0.5

Nature Safe 5-6-6 Nature Safe 8-3-5

5 6 6 5 1.5 4 8 3 5 3 2.2 4

POLYON K-Mag

9 18

ProMag 36

Vigiron Micro

14 0.5

SULFUR Raw Material or Blend Component

N P K Ca Mg S Fe Mn B Cu Mo Zn Granular Mini Micro

Ammonium Sulphate

CropMag 36

36 6

Emerald Plus (Kieserite)

15.7 16

Gypsum

20 21

16 16

Harrell's CalMAX G Harrell's K-CalMAX Iron F 227 GC Greens

24 10 6 17

5 40 18 30

Iron Sulphate 30%

K-Mag

11 21

Manganese Sulphate

31.5

Mono-Ammonium Phosphate

10 40

Nature Safe 5-6-6 Nature Safe 8-3-5 Nature Safe 13-0-0

5 6 6 5 1.5 4 8 3 5 3 2.2 4

1.25

POLYON 0-0-50 Micro Sulphate of Potash POLYON 0-0-51 Mini Sulphate of Potash

50 51 18 52 50 51

17 15

POLYON K-Mag

9 18

Sulphate of Potash Sulphate of Potash Sulphate of Potash

18 17 17 90 19 80

Sulphur

Techmangum

31.8

Tiger Boron

Tiger Iron 22% Yara 21-7-14 Yara AMIDAS

55 22

21 7 14

5.1 5.5 5.1

Yara Turf Royale Mini

21 7 14

Zinc Sulphate 35

MICRONUTRIENTS Raw Material or Blend Component

N P K Ca Mg S Fe Mn B Cu Mo Zn Granular Mini Micro

5 N 1 Iron 35% Granular

35 35

5 N 1 Iron 35% Micro

Activated Sludge - Biolsolids

5 4

1.25

Borate

15 12

Boron Micro

Copper Sulfate

Frit

10 5 2 5 10 5 2 5 14.4 6 2.4 2.4

5 5

Frit 358 GC

Frit 503 (LW-TPG Mix)

5.6

GG Micro Base

4.8

17 2.4 14 0.5

Granular Vigiron

Granusol Mn

Iron Chelate 5%

Iron F 227 GC Greens

5 40

Iron Oxide

50 50 50

Iron OxySul Iron Sucrate

Iron Sulphate 30%

18 30 18 30

Iron Sulphate Mini 30% Manganese Sucrate Manganese Sulphate

31.5

Milorganite

6 2

1.2

Manganese Oxysulfate

14 0.5

Sodium Molybdate

Techmangum

19 80

31.8

Tiger Boron

Tiger Iron 22% Vigiron Micro

55 22

14 0.5

Zinc Sulfate

34 35

Zinc Sulphate 35 Granular

ORGANICS Raw Material or Blend Component Fertilgold Prilled Milorganite

Humic Acid

N P KCaMg S Fe Mn B CuMoZn

Granular

Mini

Micro

6 2

1.2

Activated Sludge - Biolsolids

5 4

1.25

Nature Safe 8-3-5

8 3 5 3 2.2 4

Nature Safe 5-6-6

5 6 6 5 1.5 4

Nature Safe 13-0-0

1.25

*Colored boxes within the Granular, Mini, and Micro columns indicate the material in the same row is an option for custom fertilizer blending.

Not all materials are available in every market or geography. Please contact your local Harrell’s rep to understand what is available.

FERTILIZER COMPONENT COMPATIBILITY

When formulating granular fertilizers, ensuring the compatibility of different raw materials is critical for optimal quality, handling characteristics, and performance. Some raw materials can react with one another, potentially affecting their stability, nutrient availability, or efficacy. Understanding how these materials interact is key to creating a balanced and effective fertilizer.

POLYON compatibility is representative of all POLYON controlled-release fertilizer raw materials.

Mono Ammonium Phosphate (MAP) Calcium Nitrate Sulphate of Ammonia Di-Ammonium Phosphate (DAP) Urea Triple Superphosphate Muriate of Potash (MOP) Sulphate Of Potash - Granular Sul-po-mag/K-mag Epsom Salts Sulphur Crop Mag YaraMila Turf Royale 21-7-14

UMAXX UFLEXX Dolomitic Lime Calcitic Lime Gypsum Emerald Plus (Kieserite) YaraMila 19-4-19 YaraVera AMIDAS 40-0-0 YaraRega NK Green 22-0-12 YaraRega FLEX 18-4-19

CUSTOM-BLENDING & COMBINATION PRODUCTS

PREEMERGENCE HERBICIDES

BRAND NAME

ACTIVE INGREDIENT

HRAC CODE

USE SITES

BENEFIT

Established Turfgrass, Landscape Ornamentals, Container Grown

Preemergence broadleaf weed control.

Ornamentals, Field Grown Ornamentals, Home Lawns

Gallery

Isoxaben

Sparge Rate Options

Application Rate lbs/A

Application Rate lbs ai/A

0.38%

200 - 250

0.76 - 0.95

Residential and Institutional Lawns, Athletic Fields, Commercial Sod Farms, Golf Course Fairways and Roughs, Roadsides, Utility right-of-ways, Railways and Industrial Areas.

Preemergence and early postemergence control of crabgrass, selected annual sedges and annual broadleaf weeds in Turf Sites.

3 + 14

Sparge Rate Options

Application Rate lbs/A

Application Rate lbs ai/A

Prodiamine + Sulfentrazone

Echelon

0.16%

157 - 700

0.25 - 1.125

0.3%

83 - 375

0.25 - 1.125

0.375%

67 - 300

0.25 - 1.125

0.5%

50 - 220

0.25 - 1.1

For use on Turfgrasses and Established Ornamentals in the Landscape

Preemergence grassy weed control and some broadleaf weed control.

Sparge Rate Options

Application Rate lbs/A

Application Rate lbs ai/A

Pendimethalin

0.75%

200 - 400

1.5 - 3

0.86%

175 - 349

1.5 - 3

1.00%

150 - 300

1.5 - 3

ONE SHOT

BRAND NAME

ACTIVE INGREDIENT

HRAC CODE

USE SITES

BENEFIT

Systemic control of white grubs and labeled insects, and preemergence control of crabgrass, other annual grasses, and broadleaf weeds.

Residential, Commercial, Golf, and Ornamental Landscape Areas.

IRAC 28 HRAC 3

One Shot Acelepryn + Dimension

Sparge Rate Options

Application Rate lbs/A

Application Rate lbs ai/A

Chlorantraniliprolle + Dithiopyr

0.058% Acelepryn 0.19% Dimension 0.067% Acelepryn 0.17% Dimension

200 - 300

Chlorantraniliprolle: 2 - 3 Dithiopyr: 0.66 - 1 Chlorantraniliprolle: 2 - 3 Dithiopyr:0.66 - 1

266 - 400

Light green colored boxes indicate availability.

Always read and follow label instructions. All products might not be registered for use or available in all states. Please contact your local Harrell’s rep to understand what is available.

PREEMERGENCE HERBICIDES

BRAND NAME

ACTIVE INGREDIENT

HRAC CODE

USE SITES

BENEFIT

Preemergence grassy and broadleaf weed control. Excellent preemergence goosegrass control. Labeled for use during bermudagrass, zoysiagrass, and seashore paspalum establishment from sprigs.

Fairways, parks, golf courses, and lawns.

Sparge Rate Options

Application Rate lbs/A

Application Rate lbs ai/A

0.67%

299 - 597

2 - 4

Ronstar*

Oxadiazon

0.75%

267 - 533

2 - 4

1.0%

200 - 400

2 - 4

1.2%

167 - 333

2 - 4

1.5%

133 - 267

2 - 4

Apartment complexes, golf courses, cemeteries, sod

farms, roadsides, sports fields, campgrounds, office complexes, parks, parking areas, recreational sites, schools, residential turf and other similar sites.

Preemergence grassy and broadleaf weed control. Will not inhibit rooting. Labeled for application immediately before sprigging of bermudagrass.

StayGuard

Flumioxazin

Sparge Rate Options

Application Rate lbs/A

Application Rate lbs ai/A

0.125%

200 - 300

0.25 - 0.375

Golf Courses, Parks, Athletic Fields, Federal, Municipal, Corporate Lawns, and Ornamental Landscape Areas.

14 + 3 + 3

Preemergence grassy and broadleaf weed control.

Oxadiazon + Benefluralin + Triflualin

Starteem*

Sparge Rate Options

Application Rate lbs/A

Application Rate lbs ai/A

1% Oxadiazon 0.25% Benefluralin 0.25% Trifluralin

200

Oxadiazon: 2 Benefluralin: 0.5 Trifluralin: 0.5

Golf Courses, Parks, Athletic Fields, and Sod Farms Only.

Grassy and broadleaf weed control. Excellent crabgrass and goosegrass control.

14 + 3

Sparge Rate Options

Application Rate lbs/A

Application Rate lbs ai/A

Ronstar + Barricade*

Oxadiazon + Prodiamine

1% Ronstar 0.33% Barricade 0.75% Ronstar 0.25% Barricade

200 - 454

Oxadiazon: 2 - 4.5 Barricade: 0.66 - 1.5 Oxadiazon: 2 - 4.5 Barricade: 0.66 - 1.5

266 - 600

Preemergence grassy and broadleaf weed control. Excellent preemergence crabgrass control. Early postemergence crabgrass control.

Residential, Commercial, Golf, and Ornamental Landscape Areas.

Sparge Rate Options

Application Rate lbs/A

Application Rate lbs ai/A

0.125%

200 - 300

0.25 - 0.375

0.125%

200 - 400

0.25 - 0.50

Dimension

Dithiopyr

0.15%

167 - 333

0.25 - 0.50

0.17%

147-294

0.25 - 0.50

0.19%

132-263

0.25 - 0.50

0.25%

100-200

0.25 - 0.50

Residential, Commercial, Golf, Sod farms, Ornamental Landscape Areas

Preemergence grassy and broadleaf weed control. Excellent preemergence crabgrass control.

Sparge Rate Options

Application Rate lbs/A

Application Rate lbs ai/A

0.21%

310 - 715

0.65 - 1.5

Barricade

Prodiamine

0.30%

217 - 500

0.65 - 1.5

0.38%

171 -395

0.65 - 1.5

0.45%

144 - 333

0.65 - 1.5

*Restricted Use Pesticide

Light green colored boxes indicate availability.

Always read and follow label instructions. All products might not be registered for use or available in all states. Please contact your local Harrell’s rep to understand what is available.

POSTEMERGENCE HERBICIDES

BRAND NAME

ACTIVE INGREDIENT

HRAC CODE

USE SITES

BENEFIT

For application to established turfgrass. Do not apply to residential turf.

Postemergence broadleaf weed control.

Triclopyr + Clopyralid

Confront

Sparge Rate Options

Application Rate lbs/A

Application Rate lbs ai/A

0.68%

156

0.187 clopyralid + 0.56 triclopyr

INSECTICIDES

BRAND NAME

ACTIVE INGREDIENT

HRAC CODE

USE SITES

BENEFIT

Landscape and Recreational Turfgrass, landscape ornamentals, and interior plantscapes

Systemic control of white grubs and other listed pests.

Acelepryn

Chlorantraniliprolle

Sparge Rate Options

Application Rate lbs/A

Application Rate lbs ai/A

0.067%

150 - 300

0.1 - 0.2

Turfgrass, and ornamentals in commercial and residential landscapes.

Broad spectrum insect control.

Merit

Imidacloprid

Sparge Rate Options

Application Rate lbs/A

Application Rate lbs ai/A

0.20%

125 - 200

0.25 - 0.4

Lawns in landscaped areas around residential, institutional, public, commercial and industrial buildings, parks, recreational areas and athletic fields.

Broad spectrum insect control.

Sparge Rate Options

Application Rate lbs/A

Application Rate lbs ai/A

Talstar

Bifenthrin

0.069%

145 - 290

0.1 - 0.2

0.096%

105 - 209

0.1 - 0.2

0.115%

87 - 174

0.1 - 0.2

0.20%*

26 - 52

0.05 - 0.1

*For residential lawn and nursery use only

Light green colored boxes indicate availability.

Always read and follow label instructions. All products might not be registered for use or available in all states. Please contact your local Harrell’s rep to understand what is available.

Building a bag of fertilizer, especially for a custom blend, involves carefully selecting, measuring, and mixing various raw materials to achieve the desired nutrient formulation. BUILDING THE BAG

Identify the nutrient needs. Determine the specific nutrient ratios required (e.g., N-P-K: Nitrogen-Phos- phorus-Potassium) based on the soil, plant, or agronomic conditions. ADDITIONAL CONSIDERATIONS Include any secondary nutrients (e.g., calcium, magnesium) and micronutrients (e.g., iron, manganese) if needed.

STEP NO. 1

Determine the Nutrient Requirements

+ Nitrogen Sources. Choose from sources such as urea, ammonium sulfate, or POLYON controlled-release products. + Phosphorus Sources. Include ingredients like monoammonium phosphate (MAP) or diammonium phosphate (DAP). + Potassium Sources. Common sources include muriate of potash (potassium chloride) and sulfate of potash. + Micronutrients + Additives. Consider adding micronutrients and other additives like humic acid.

STEP NO. 2

Select the Raw Materials

Based on the desired nutrient ratio (e.g., 20-10-10), calculate the precise amount of each raw material to achieve the proper balance.

STEP NO. 3

Calculate the Exact Proportions

Harrell’s utilizes a multi-step process to mix the raw materials evenly. + Precision mixing ensures that nutrients are distributed uniformly throughout the fertilizer batch. + For custom blends, special care is taken to ensure compatibility of raw materials.

STEP NO. 4

Blending the Materials

Packaging.

STEP NO. 5

+ The final blend is then loaded into bags, typically 50 lb bags, 1000 lb sacks or 2000 lb sacks, which are sealed and labeled + Labeling includes important details like the N-P-K ratio, blend ingredients, bulk density, and pesticide components (if applicable).

Packaging

37-0-7 Blend with Granular Minors

The blending process ensures uniform distribution of all raw materials.

Polyon N

66%

Polyon K 13% Soluble Nitrogen Source 19% Granular Minors 2%

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