Frequently Asked Questions

What types of reports are available?

What is Leaf Extract Analysis?

Leaf Extract Analysis is a horticultural analysis technique used to analyze the mineral content of plant fluids.

What is the purpose of Leaf Extract Analysis?

To use plant fluid mineral data reports to inform nutrient management decisions.

How do I get started?

Our Getting Started Guide has instructions for taking and submitting samples, ordering labels, preparing labels, shipment and more.

How much does a report cost?

Each standard report costs $75 and analyzes and compares old/new leaf, shallow/deep soil or source/field irrigation water.

NOTE: For best results, we highly recommend sending both samples for your reports. Our reports compare the samples to each other to show how nutrients move through the plant or soil, or how nutrients are lost or changed between a water source and a field irrigation point..

Is there a discount if I place a large bulk order?

Yes. Bulk Orders (ordering more than one report at the same time) use scheduled discounts:

• 1-10 reports: $75 each
• 11-99 reports: $70 each
• 100+ reports: $65 each

NOTE: Discounts apply only when all reports are:

1. Prepaid and ordered in bulk in advance on the web site,
-or-
2. Prepayment is made in advance by contacting our office.

For large numbers of reports (20 or more), we recommend contacting our office at 503-479-8407 to set up a prepaid account. This gives you immediate access to your reports once the samples have processed, bypassing the PayPal process and fees.

How long does it take to receive my results?

Leaf and Water samples are generally processed within 3 business days of being received at our lab. Soil samples are slow-dried for 7 days before processing begins. Once the laboratory has analyzed your samples, results will be received by email within 2 business days.

This means that Leaf and Water results will be sent to you within 5 business days of our receiving them. Soil results will be available within 5 + 7 days (12 days total, with the extra days for soil slow drying).

Results are delivered by email, usually within 3-5 days from the time the lab receives the samples.

Does Apical Sell Products Like Biostimulants, Nutrients and Amendments?

How do I get prepare my labels?

Our Sample Shipping Labels page has detailed instructions for printing and applying your sample labels.

How do I place an order online?

Click on Orders on the top menu. You will see a page for ordering a single report (Leaf Extract Analysis, Soil Solution Analysis, Irrigation Water Analysis) or multiple reports at once with a Bulk Order.

Each single report costs $75, and each report in a Bulk Order costs $75. For example, if you order 5 reports in a Bulk Order, your total cost is $375.

Do you accept Hemp leaf samples?

Yes. As of June 2019, we can accept Hemp samples with a THC concentration below 0.3 percent.

Note, however, that we cannot accept any cannabis samples unless they are hand-delivered to the laboratory.

Here’s the language of the new policy:

“Hemp and hemp-based products, including cannabidiol (CBD) with the tetrahydrocannabinol (THC) concentration of such hemp (or its derivatives) not exceeding a 0.3 percent limit are permitted to be mailed only when:

a. The mailer complies with all applicable federal, state, and local laws (such as the Agricultural Act of 2014 and the Agricultural Improvement Act of 2018) pertaining to hemp production, processing, distribution, and sales; and

b. The mailer retains records establishing compliance with such laws, including laboratory test results, licenses, or compliance reports, for no less than 2 years after the date of mailing.”

Do you accept Cannabis leaf samples?

Only if the leaf samples are hand-delivered to our Oregon laboratory. You may send soil and water samples for soil and water that is used for a cannabis crop.

We cannot and will not accept cannabis samples via mail, UPS, FedEx, etc.

When can I drop off samples in person?

We generally accept samples from 9am-3pm on weekdays. You may also call to make an appointment.

There is a leaf drop cooler at the front door if you need to make a delivery after hours.

Do you accept samples from outside the United States?

Yes, on a limited basis, as it requires additional paperwork and licensing.

Apical is currently approved to accept samples of about 20 species from Ecuador, Mexico, Peru and Guatemala only. We are working on adding several more species and may add more countries to the list over time.

If you wish to send samples from outside the United States, please email zach@apical-ag.com or info@apical-ag.com to begin the permitting process with APHIS-USDA.

Currently accepted species from Ecuador / Mexico / Peru / Guatemala are:

• Coffea arabica
• Coffea robust
• Theobroma cacao
• Musa acuminata
• Carica papaya
• Persea americana
• Gossypium hirsutum
• Malus domestica
• Prunus avium
• Zea mays
• Avena sativa
• Phaseolus vulgaris
• Sorghum bicolor
• Triticum aestivum
• Vaccinium myrtillus
• Vitis vinífera

What elements are analyzed for a given sample?

Our reports list concentrations of elements and molecules, Mobile Nutrients (Phloem), Immobile Nutrients (Xylem) - along with helpful interactive charts and graphs - and are grouped into the following categories:

• Primary Indicators
• Major Cations
• Secondary Cations
• Minor Cations
• Major Anions
• Secondary Anions
• Minor Anions
• New Leaf vs. Old Leaf Ratios
• Calcium Ratios
• Limiting Indicators (Mobile, Immobile)

In addition to pH, Digital Brix, Qualitative Brix and Electrical Conductivity, we report concentrations of the following elements and molecules:

• Ammonium (NH4)
• Potassium (K)
• Magnesium (Mg)
• Calcium (Ca)
• Sodium (Na)
• Iron (Fe)
• Manganese (Mn)
• Zinc (Zn)
• Copper (Cu)
• Cobalt (Co)
• Nitrate (NO3)
• Phosphorous (P)
• Sulfur (S)
• Chloride (Cl)
• Silicon (Si)
• Iodine (I)
• Boron (B)
• Molybdenum (Mo)
• Aluminum (Al)
• Selenium (Se)

How do I share my report with an agronomist or consultant?

Our Agronomists and Recommendations page has detailed instructions for sharing your reports with other Apical customers.

When you order a report on our web site, there is a field on the order form where you add email addresses of Apical customers with whom you would like to share the report. These individuals will receive email updates about your order and will be able to view your reports from their own Grower Home page.

When you print and apply your Sample Shipping Labels, you may also enter those email addresses on the sample labels for each sample set.

Additionally, each report has a 'Share This Report' button that takes you to a sharing page which allows you to share a single report with an agronomist or consultant. There is a secondary field on that page that allows you to share ALL of your reports with an agronomist or consultant.

You can share with multiple people by adding comma-separated email addresses.

For example, to share the current report with a business partner and a biostimulant provider, you might enter:

• sam@myfarm.com,david@apical-ag.com

How do you use Leaf Extract Analysis to inform nutrient management?

By sampling and analyzing different parts of the plant, agronomic principles can be utilized to determine which nutrients are deficient, balanced, or toxic.

How do I get advice or recommendations for my crops?

Our Agronomists and Recommendations page has detailed instructions for requesting a review of your report for recommendation purposes.

You can order General Notes for $10 for a quick synopsis of your results. Example: High Boron, Low Calcium, Toxic Sodium

You can order a Detailed Recommendation for $25 for a full review of your report, including specific products and quantities to apply. For example: (on a per acre basis):

• 500 lb Soft Rock Phosphate
• 500 lb Perfect Blend 4-4-2
• 250 lb Feather Meal
• 500 lb Fish Bone Meal
• 250 lb Mesa Verde Humates

How do I view my order status?

Click on Order -> View All Orders on the top menu. You will see a list of Pending Orders, followed by a list of Completed Orders.

If you placed your order on the web site, you will see the current status of all your orders. If you sent in samples to the laboratory without creating an online order, then your order will be added to the web site only after it has been processed by the laboratory.

How do I view all my reports?

Click on Reports on the top menu. You will see lists of reports, grouped by report type. Each entry has a 'View' link to view the report.

You can also see all of your reports on your Grower Home page. Scroll down to see links to all of your leaf, soil and water reports.

If looking for reports on your Grower Home page, note that you can click in the top right corner of the report section to switch between Card View (colored tiles) or List View (more efficient data display). You can change your default setting (card vs. list) on your Grower Settings page, which is available by clicking the 'Grower Settings' button on the top right corner of your Grower Home page.

How do I read the reports?

See our Leaf Extract Analysis Interpretation Guide.

Does it take a long time to learn to read the reports?

By reading our interpretation guide, one can usually learn the basics within half an hour; however, after generating and reading reports for four years, we are still gaining insights.

How do I get the most out of the reports?

• Add General Notes to each report ($10)
• Add a Detailed Recommendation to each report ($25)
• Book a private consultation
• Gain Deeper insight on crop health with the Apical LEAF Program

I'm waiting for my report. Can I call to see if it's complete?

Reports are made available to you within 24 hours of being processed by the lab. As soon as the data is uploaded to the web site, you will receive an email with a link to view (or pay for) the report.

Rest assured that you will receive your reports as soon as they are created. There is no need to call, and calling Apical will not speed up your results.

Who can benefit from using Leaf Extract Analysis?

• Farmers that wish to improve crop productivity and health
• Agronomists, Crop Advisors and Consultants who make fertilizer recommendations
• Organic growers looking to maximize the organic method
• Conventional growers looking to minimize fertilizer costs
• Students of Agriculture/Horticulture

What can I learn from Leaf Extract Analysis?

• How to optimize fertilization
• General plant health by primary indicators
• Balance of nutrients in different parts of the plant
• Toxic elements that are causing plant stress
• Nitrogen excess/deficiency
• Micronutrient deficiencies
• Nutrient management preferences by cultivar
• Much More…

Why is Leaf Extract Analysis beneficial?

The mineral content of the plant fluids is a predictive indicator of plant tissue content.

By analyzing the plant fluids during transport prior to becoming part of the plant tissue, the mineral needs and excesses of the plant can be adjusted.

How does Leaf Extract Analysis differ from Plant Tissue Analysis?

In Tissue Analysis, the plant fluids within the plant leaf are excluded and the cellular tissue is analyzed.

In Leaf Extract Analysis, the cellular fluids are analyzed and the tissue components are excluded.

Is Leaf Extract Analysis “Sap Testing”?

Sap testing usually implies that plant leaves are juiced to a pulp and analyzed in the field for 1-5 nutrient analytes using portable meters.

In Leaf Extract Analysis, the pure cellular fluids of the plant are extracted and analyzed on precision laboratory equipment for 22 or more analytes.

How do you extract the fluids?

We employ a multi-stage process that excludes the vascular transport bundles, cellular wall structures and other tissue components. The process produces pure plant fluids to be used for analytical purposes.

How do you analyze the fluids?

We utilize scientifically accepted scientific methods for plant-matrix analysis using precision laboratory techniques for sub part-per-million quantitation.

What is Apical’s LEAF program?

Apical’s LEAF program is our consulting program for growers. By working directly with the Apical staff, we pave the path to soil health, crop productivity and farm profitability.

Contact us for more information.

• Precision forecasting of plant needs based on analysis results
• Custom Data interpretation
• Detailed Crop Fertilizer Recommendations
• Custom Foliar Nutrition Blends
• Custom Biological Inoculant Recommendations
• Biological-Nutrient Synergy