Tree and Shrub Fertilizer

Arbor Green® PRO

Davey Arbor Green® PRODavey Arbor Green® PRO

The Davey Institute has

researched the natural soil

conditions of the forest floor and recognizes the challenges of the urban

forest soil.

Arbor Green PRO

mimics nutrient delivery as

seen in the natural forest

environment.

• Microbial release of nutrients

• 3-1-1 nutrient ratio

• Low salt index

• Long term nutrient buildup

Inspired by Nature

Davey Arbor Green® PRODavey Arbor Green® PRO

Why Fertilize?• Forest Trees

• Recycle nutrients

• Build soil over time

• Urban Trees• Little or no

recycling

• Disturbed soils & sub-soils

• Turf competition

• Limited natural nitrogen

Davey Arbor Green® PRODavey Arbor Green® PRO

• Optimal Soil Nutrients will:

• Hasten maturity of young trees

• Maintain health & vigor of trees

• Rescue declining trees

• Cure nutrient deficiencies

Arbor Green PRO• Developed by a tree company for use by tree companies• Patented formulation• Backed by Davey

Key Benefits

• Superior performance

• Use 25% less nitrogen

• Lower cost application

Davey Arbor Green® PRODavey Arbor Green® PRO

Tree Growth Comparison Trial on established treesLength of trial – 3 years

Untreated Treated

Patented FormulationPatented Formulation

PPA – PolyaspartatePPA amino acid improvesnutrient availability.• Compared to humates, PPA has 3 to 4 times as many nutrient holding sites per particle.Result: Less fertilizer needs to be applied.

The lower application rate addresses environmental stewardship and lower cost.

Slow Release NitrogenSlow Release Nitrogen

Davey Arbor Green PRO nitrogen source contains 66% water insoluble nitrogen (WIN), which provides uniform slow release rate.

Nitrogen Release Mimics Natural Organics

Slow Release NitrogenSlow Release Nitrogen

Charts adapted from Nu-Gro.

Excess soluble nitrogen can over-stimulate vegetative growth possibly upsetting root to shoot balance. Succulent new cell growth may have weak cell walls leading to damage by insects. Excessive new growth can take away nutrients used by the plant to produce natural plant defenses used to protect against insects and disease.

Slow Release NitrogenSlow Release Nitrogen

Charts adapted from Nu-Gro.

AGP Compared to Other Slow Release Nitrogen

1. Microorganisms utilize the carbon in ureaform and release the nitrogen for the plant.2. Because this is a biological process, it slows in cool and/or dry soils.3. The biological release rate reduces nitrogen leaching.

Microbial BreakdownMicrobial Breakdown

Building the SoilBuilding the Soil

Nitrogen in Davey Arbor Green PRO will remain in the soil at a significantly

higher level than conventional fertilizers resulting in more uniform growth

response and healthier plants.

Percent of Soil Nitrogen Over 7 Years

Arbor Green PRO

is ideal to use on sensitive, newly

planted, drought-stressed, or

trees in decline. The AGP salt index is 10 or

less compared with other

products at 15 to 120.

Low Salt IndexLow Salt Index

Before After

A Low Salt Index Means Low Burn Potential

Arbor Green PRO 30-10-7Arbor Green PRO 30-10-7

Patented Formulation• Use 25% less nitrogen• Long lasting

• Two year application rate• Improves nutrient holding

capacity of soil compared to conventional fertilizers with humate additives• Low Salt Index (less than

10)• Non burning – not only for

use on normal trees but also newly planted, stressed, and declining trees. Also for use on shrubs.• Low Leach Potential• Cost Effective

30-10-7 Product Specifications      30-10-7 Product Specifications     

• Nitrogen Source• Ureaform: poly-urea (carbon-based nitrogen)

• Potassium and Phosphorus Source• Monopotassium phosphate (food grade)

• Amino Acid Source• Potassium Polyaspartate

• Salt Index• Less than 10

• Weight• 30 pound bag

Arbor Green PRO 30-0-10 Non-PhosArbor Green PRO 30-0-10 Non-Phos

Non-Phosphorus Formulation

• Meet regulatory environment conditions

• Especially for use near water

• Use 25% less nitrogen

• Long lasting

• Low Salt Index (less than 10)

• Non burning – not only for use on normal trees but

• also newly planted,

• stressed, and declining

• trees. Also for use on

• shrubs

• Low Leach Potential

• Cost Effective

30-0-10 Product Specifications30-0-10 Product Specifications

Nitrogen SourceUreaform: poly-urea (carbon-based nitrogen)

Potassium SourcePotassium Sulfate

Amino Acid SourcePotassium Polyaspartate

Salt IndexLess than 10

Weight30 pound bag

Arbor Green PRO 30-10-7 PacketsArbor Green PRO 30-10-7 Packets

• Use For:• Fertilizing small caliper

trees, shrubs and potted plants.

• When planting small caliper trees, shrubs, potted and other landscape plants.

• Easy-to-Use. No Mixing• Tear open the packet and

disperse directly in planting hole or directly on soil near the plants. Water in.

• Easy to Measure• 1 dbh inch tree: 1 packet

• 2 dbh inch tree: 2 packets

• 3 dbh inch tree: 3 packets

• Packaging• 48 packets per display• 2 displays per carton• 96 packets per carton

Note: Same patented formulation as AGP 30-10-7 in 30 lb. bag.

Application BasicsApplication Basics

Product Characteristics• Suspendable formulation• Indefinite shelf life• Non-hazardous• Non-corrosive• Odorless• Pathogen free• Weight – 30 lb. bags• Pallet – 40 bags

Equipment Requirements• Conventional spray equipment• Agitation

• Paddle agitation or• Jet agitation with Venturi

nozzles• Standard soil injection probe

with 4 lateral ports on tip. • FMSC 785 or other

standard spray gun attached to injection probe.

• 150 to 200 psi

Tank AgitationTank Agitation

• Spray tank should be equipped with sufficient agitation to maintain fertilizer suspension.

• Mechanical paddle agitation is recommended. 

Mixing RateMixing Rate

One Year Rate

Mix 15 lbs. (1/2 bag) of Davey Arbor Green PRO in 100 gallons of water.

Mixing ProcedureMixing Procedure

Fill the tank with water and engage the pump during fill-up. 

Add fertilizer slowly, in 5 lb. increments, to the water to ensure proper suspension.

Re-suspendRe-suspend

Use soil-probe to re-suspend the material. 

Avoid agitation paddles

CalibrationCalibration

With 300 ft of ¾ inch diameter hose, there is a pressure loss of approximately 5 psi per 50 ft of hose, so the pump pressure should be set at a minimum of 150 psi. 

CalibrationCalibration

1. Collect fertilizer solution

2. Record time to collect ½ gallon

3. This should be about 4 seconds.

4. Increase or decrease pressure to be near 4 sec.

Tree ApplicationTree Application

1. 50 gal. /1,000 sq. ft

2. Under canopy

3. Apply one-half (1/2) gallon of suspension per injection. Approx. 4 seconds

4. Space injections three (3) feet apart.

5. Inject to a depth of 4 to 12 inches.

Application – Liquid InjectionApplication – Liquid Injection

• Sub-surface injection helps break-up compaction.• Sub-surface injection applies fertilizer where the roots are. • Start injection below the turfgrass roots to avoid competition for nutrients.

• Liquid injection

places the fertilizer

in contact with

roots.• Granular fertilizers

require irrigation to

move those

fertilizers to the

root zone.

Application - Liquid InjectionApplication - Liquid Injection

Tree Application PatternTree Application Pattern

• 3-foot centers

under tree canopy to dripline.

• Grid or circles• Avoid trunk and root

crown to minimize mechanical damage to trees or shrubs.

Incorrect ApplicationIncorrect Application

Injection• Apply 1/10 gallon per

injection• Two (2) feet between

injections.• 1 second per

injection

Shrub ApplicationShrub Application

Shrub ApplicationShrub Application

Packets• Disperse contents

of packet around base of shrub or plant according to label instructions

• Water in.

Arbor Green PRO SupportArbor Green PRO Support

• Product Information• Brochures• Product Sheets• MSDs• Labels

• Business Development Recommendations

• Trade Advertising• Trade Show Support• Website Information• Nationwide Field

Service Support• Distribution Solutions

Backed by DaveyBacked by Davey

Arbor Green PRO was created, developed, and patented by scientists at The Davey

Institute who are committed to innovation and environmental stewardship.

Products like Arbor Green PRO are an example of the next generations tools being developed by Davey to nurture and protect trees and landscapes and enhance the overall value of properties and communities we live in.

Thank youThank you

Thank You

For further information regarding

Arbor Green PRO

Contact:

David Fritz

952-217-3375

David.Fritz@davey .com