Arbor Green® PRO 30-10-7

A Slowly Soluble,

Long Residual, Complete Fertilizer with Synthesized

Nitrogen Fortified with Polyamino Acids

Before Fertilization

After Sub-Surface Fertilization with 30-10-7

The best fertilizer with more value per dollar than any other complete formulation on the market

DDaavveeyy AArrbboorr GGrreeeenn®® PPRROO Davey Arbor Green PRO is the most significant advancement in tree fertilization since the original Arbor Green was patented in 1978. Composed of the highest quality nutrients, Arbor Green has been fortified with essential amino acids in just the right ratio to maximize nutrient effect. The result is even better performance than the original…..and at a reduced rate of 25%!

Amino acids reportedly improve plant performance and their ability to resist and recover from environmental and pest problems. Amino acids are fundamental ingredients in the production of proteins, phytohormones and growth substances that are directly involved in stress physiology of plants. Applied to soil, amino acids improve the microflora, thereby improving soil structure and facilitating the assimilation of nutrients. In addition, amino acids chelate micronutrients, improving absorption and translocation within the plant.

Unfortunately, traditional sources of amino acids such as kelp do not contain sufficient amounts to elicit a plant response. New biopolymers have changed all that. Significantly more active than their amino acid building blocks, biopolymers offer an opportunity to reduce application rates and reduce the nutrient “load” in the soil. In addition, the polyamino acids incorporated into Arbor Green PRO maintain the same low salt index unique to the original Arbor Green and are biodegradable.

Davey Arbor Green PRO -- Arbor Green, the highest quality complete fertilizer for woody plants, PRO a polyamino acid nutrient enhancer.

MMoorree DDoollllaarr VVaalluuee TThhaann AAnnyy OOtthheerr CCoommmmeerrcciiaall FFeerrttiilliizzeerr

Why Specify Davey Arbor Green PRO?

u

In addition to cost savings and enhanced performance, Davey Arbor Green PRO is easy to handle, is not subject to combustion, is not corrosive and has much smaller bulk than low-analysis materials. Furthermore, since Davey Arbor Green PRO is made to consistent product specifications, it has a predictable nutrient release pattern.

A complete fertilizer, Davey Arbor Green PRO 30-10-7 containshigh-quality nitrogen, phosphorus, and potassium formulated from urea-formaldehyde and monopotassium phosphate, plus polyamino acid.

The nitrogen in Davey Arbor Green PRO is bound in organic molecules and released in the soil by the same microorganisms that break down other organic matter.

Due to the complex nature of the compounds found in Davey Arbor Green PRO, its release rate is slower and more uniform than most other organic fertilizers. Nitrogen is released througho the growing season, when soil bacteria are active.

Nitrogen is not released in the winter since the bacteria which decompose the organic molecules are not active when the soil temperature is below 50˚F. Consequently, the nitrogen is more efficiently utilized since it is not subject to winter leaching when the roots are not actively absorbing nutrients.

t

Original Davey Arbor Green has been used for 30 years by The Davey Tree Expert Company. Davey Arbor Green has been granted two U.S. patents because of its unique abilities. Davey Arbor Green PRO has two U.S. patents pending.

Advantages of Davey Arbor Green PRO

WIN (Water Insoluble Nitrogen) is one way to measure the quality of a fertilizer.

The higher the WIN, the longer the nitrogen remains in the soil. Davey Arbor Green PRO is 2/3 WIN.

66% of Davey Arbor Green PRO is Released Over Two Growing Seasons (WIN)

Promotes uniform growth

Low leach potential

Cost-effective

34% of Davey Arbor Green PRO is Released Immediately

Helps promote initial plant growth

Non-burning

No salt build-up; low salt index

TTrreeee RReessppoonnssee wwiitthh DDaavveeyy

AArrbboorr GGrreeeenn®® PPRROO

Containerized red maple trees.

The tree on the left (A) has been

fertilized with Davey Arbor Green

PRO, and the tree on the right (B)

is untreated. Length of trial: 3

months.

A B

B A

Newly transplanted crabapples.

The tree on the left (A) is

untreated. The tree on the right

(B) has been treated with Davey

Arbor Green PRO. Length of trial:

6 weeks.

B A

Established ash trees. The tree on

the left (A) is untreated and the

tree on the right (B) has been

fertilized with Davey Arbor Green

PRO. Length of trial: 3 years.

Proof of Quality and Efficiency The efficiency and quality of Arbor Green PRO and the conventional organic fertilizers can be compared from the nitrification rates in Figure 1, which provide a direct measure of nitrogen availability. The data for cottonseed meal and sewage sludge show rapid initial release followed by very slow and incomplete release. Comparatively, Arbor Green PRO shows a much more gradual release pattern and greater nitrogen availability.

The nitrogen release rates are given in Figure 2. The superior quality and efficiency of Arbor Green PRO are evident in the more uniform release of nitrogen compared to conventional fertilizers.

Figure 2. Nitrogen Release Rates

0

10

20

30

40

50

60

70

80

0 4 8 12 16

Weeks After ApplicationP

erce

nt N

itrog

en R

elea

sed

Urea

Sulfur-Coated Urea

IBDU or Polyform

Davey Arbor Green PRO

20

Figure 1. Comparative Nitrification for Arbor Green PRO Nitrogen and Conventional Organics

0

10

20

30

40

50

60

70

80

90

100

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

Weeks

Perc

ent C

onve

rsio

n to

Nitr

ate Davey Arbor Green PRO

Cottonseed Meal

Activated Sew age Sludge

Digested Sew age Sludge

.021

.036

.080

.010

.020

.030

.040

.050

.060

.070

.080

.090

Urea IBDU Davey Arbor Green PRO

Per

cent

Nitr

ogen

Incr

ease

Figure 3. Total Percent Increase in Soil Nitrogen After 7 Years of Fertilization at a Rate of 2.44 Kg N/1002/Season

Proof of Residual Nitrogen from other fertilizers will leach away and not remain in the root zone. Nitrogen in Davey Arbor Green PRO will build up in the soil, maintaining a significantly higher level than conventional fertilizers. This results in more uniform growth response and healthier plants.

Salt Index: A Measure in Determining Fertilizer Quality Salt index measures the potential for a fertilizer to raise the soluble salts and osmotic pressure of soil solution, which reduces water uptake by plant roots, resulting in physiological drought, or burn.

Davey Arbor Green PRO has a salt index of less than 10, which is the lowest of any commercially available, complete fertilizer. Most fertilizers have a salt index in excess of 30.

Davey Arbor Green PRO is safe for newly transplanted shrubs and trees:

Low leach potential No salt build-up

Non-burning Enhances nutrient utilization

Fertilizer Concentration and Placement The standard fertilizer recommendation for shade trees is three (3) to six (6) pounds actual nitrogen per 1,000 square feet. Because of the nutrient-enhancing effect of polyamino acids, the recommended rate for Davey Arbor Green PRO applies 2.25 to 4.5 pounds. The optimum amount of phosphorus and potassium is considered to be about one-third the amount of nitrogen, expressed as a 3:1:1 ratio.

Although roots may extend beyond the dripline, fertilizer is generally distributed throughout the area covered by the branch spread. The greatest concentration of nutrient absorbing roots occurs in this area.

Davey Arbor Green PRO is injected into the soil to a depth of 4 to 12 inches. Injections are spaced 3 feet apart throughout the branch spread area. Pressure at 150 to 200 psi forces the soluble and suspended nutrients laterally through the soil, providing better nutrient-root contact.

Advantages of Davey Arbor Green PRO 100% synthesized nitrogen, food grade phosphorus and potassium, and fortified with polyamino acid.

Efficient use by plants

Low leach potential

Long-lasting

Clean

Non-burning

Nitrate and chloride free

Non-hygroscopic

Non-combustible

Reduces storage needs

Predictable release pattern

Odorless

Pathogen free

Non-oxidizing

Enhances nutrient availability

HHooww ttoo UUssee DDaavveeyy AArrbboorr GGrreeeenn®® PPRROO

The Davey Soil Injection Needle

Directions for Use

The Davey Soil Injection

Needle is used for applying

Davey Arbor Green PRO

fertilizer to trees and shrubs. It

attaches to the FMSC 785

spray gun or with adaptors to

other spray guns.

The injection needle is of

rugged construction and is

made up of two parts; an upper

half composed of a pipe

extension with an adjustable

handle and a lower half made

up of a fixed kickplate with a

hardened steel replaceable tip.

Arbor Green® PRis distributed nationally by:

The Davey Tree Expert Company Kent, Ohio 44240 (330) 673-9511 (800) 445-8733 & Regional Davey Offices Printed in U.S.A.

Davey Arbor Green PRO Application Recommendations Two-Year Technique One-Year Technique Trees Shrubs Trees Shrubs

Pounds of Davey Arbor Green PRO per 100 Gallons of Water

30 30 15 15

Pounds of Nitrogen per 1,000 Square Feet

4.5 2.25 2.25 1.12

Feet Between Injection Holes 3 1-2 3 1-2

Gallons per Injection Hole 1/2 1/8 1/2 1/8

Seconds per Injection Hole 4 1 4 1

Injection Depth (inches) 4-12 4-6 4-12 4-6

Gallons per 1,000 Square Feet 50 25 50 25

Davey Arbor Green PRO Tree Diameter + Root Zone Fertilization Rate Chart Tree Diameter in Inches 4 8 12

Root Area (square feet) 86.0 346.0 800.0

Total Pounds to Apply

Annual (1) .67 2.62 6

Two-Year (2) 1.27 5.17 12

Gallons 4.3 17.3 40.0

Davey Arbor Green PRO Specifications

Guaranteed Analysis 30% Total Nitrogen (N)

20% Water Insoluble Synthesized Nitrogen 10% Water Soluble

Synthesized Nitrogen 10% Available Phosphoric Acid (P2O5)

7% Soluble Potash (K2O) Nitrogen Source

Ureaformaldehyde Phosphorus Source

Monopotassium phosphate Potassium Source

Monopotassium phosphate Potential acidity equivalent to 1,088

pounds of CaCO per ton Fortified with polyamino acids

O