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Coffee Leaf and Soil Sampling Instructions
UH-ADSC will no longer be able to accept soil, plant, forage, feed, and food samples from the public, including farmers. Please see the CTAHR Interim Dean and Associate Deans' (June 8th) message below.
Aloha All,
We hope this message finds you well and enjoying the beginning of summer! Almost 40 years ago, CTAHR’s Agricultural Diagnostic Service Center (ADSC) was conceived and dedicated to providing analytical services (testing soil, plant tissue, forage, feed, and food) and diagnostic services (plant disease, weed, insect, and nematode identification) to growers across the state. While many of these services continue to this day, we recognize that our soil testing program has not been linked adequately to ongoing research opportunities and the application of the latest science and technology of soil management. Working together with faculty and ADSC staff, we have developed a plan that calls for transitioning the ADSC soil and plant analysis lab in Sherman Laboratory to a faculty run, multi-user soil research lab. As we proceed with this transition, we wish to communicate to all our stakeholders that after June 27, 2023, we will no longer be able to accept soil, plant, forage, feed, and food samples from the public. For all samples delivered by this date, the ADSC lab will continue to process submitted samples until all have been analyzed. After June 27th, CTAHR will provide the name and location of alternative laboratories where one may send samples for analysis. Additionally, [as time and expertise allows] CTAHR faculty will continue to assist our stakeholders in interpreting analytical results from recommended laboratories. We are excited by this opportunity to transition the Sherman Laboratory space into a set of modern, cutting-edge laboratories with faculty, students, and staff engaged in strategic and impactful research. And we see this transition as not just a physical or procedural change, but a paradigm shift towards a more comprehensive and evolving understanding of soil as a living system. It is also a commitment by CTAHR to always strive to be at the forefront of research and innovation, and to be consistent advocates for a scientific, data-driven approach that guides us in developing more sustainable, efficient, and resilient food systems while minimizing any negative impacts on the environment and society. In closing, we wish to emphasize that the transition outlined in this email only pertains to the ADSC analytical service labs in Sherman Laboratory [Manoa] for testing soil, plant tissue, forage, feed, and food. There are no impending changes being proposed for the ADSC plant disease diagnostic lab and the seed program, which will continue to be supported strongly by CTAHR.
Thank you, Ania, Jeremy and Walter
Dr. Ania Wieczorek
Dean and Director (Interim)
Associate Dean for Academic and Student Affairs (Interim)
College of Tropical Agriculture and Human Resources
University of Hawai'i Manoa
3050 Maile Way, 202 Gilmore Hall
Honolulu, HI 96822-2231 USA
Phone: (808) 956-8234
Read the publication from the Associate Deans of Extension and Research: FAQ: Changes at UH CTAHR ADSC
For those wanting to already look into other labs to send samples to, please find a few possibilities below. If sending samples off island or via mail, contact HDOA's Plant Quarantine Branch for shipping and permitting regulations and information AND contact the laboratory for their guidance with transport, payment, forms, etc. as well. You may also want to contact USDA APHIS and the lab for shipping and permitting information re: samples being sent to the mainland.
Contact the labs directly for information on soil and tissue submissions, transport, payment, permits, forms, etc. Tissue is likely to require drying at 70 degrees celsius (158 degrees fahrenheit) before mailing. The local CTAHR Extension offices will no longer assist with the packing and postage of soil and tissue samples. However, if you have insect, disease, and nematode samples, these can still be brought to the Extension Offices and you can specify to have insect, disease, and nematode samples submitted to the UH-CTAHR ADSC Lab in Hilo. For questions/concerns, contact Darren Park (darrenp@hawaii.edu; 808-956-6706) of the UH-CTAHR ADSC lab.
Your other alternatives for submitting samples for analysis may be:
Learn How to Take Proper Soil and Leaf Samples for Coffee. But, please disregard any information on this document that's related to UH CTAHR ADSC submissions and costs.
Typical soil and leaf tissue analysis codes are S2 for soil, and T1-N (total nitrogen) and T2-All (P, K, Ca, Mg, Fe, Cu, B, Zn, Na and Mn) for leaf tissues. If you are unsure your tree problems are related to nutrition or a plant pest or disease, here are some helpful hints for Collecting Plant Disease and Insect Pest Samples for Problem Diagnosis.
Aloha All,
We hope this message finds you well and enjoying the beginning of summer! Almost 40 years ago, CTAHR’s Agricultural Diagnostic Service Center (ADSC) was conceived and dedicated to providing analytical services (testing soil, plant tissue, forage, feed, and food) and diagnostic services (plant disease, weed, insect, and nematode identification) to growers across the state. While many of these services continue to this day, we recognize that our soil testing program has not been linked adequately to ongoing research opportunities and the application of the latest science and technology of soil management. Working together with faculty and ADSC staff, we have developed a plan that calls for transitioning the ADSC soil and plant analysis lab in Sherman Laboratory to a faculty run, multi-user soil research lab. As we proceed with this transition, we wish to communicate to all our stakeholders that after June 27, 2023, we will no longer be able to accept soil, plant, forage, feed, and food samples from the public. For all samples delivered by this date, the ADSC lab will continue to process submitted samples until all have been analyzed. After June 27th, CTAHR will provide the name and location of alternative laboratories where one may send samples for analysis. Additionally, [as time and expertise allows] CTAHR faculty will continue to assist our stakeholders in interpreting analytical results from recommended laboratories. We are excited by this opportunity to transition the Sherman Laboratory space into a set of modern, cutting-edge laboratories with faculty, students, and staff engaged in strategic and impactful research. And we see this transition as not just a physical or procedural change, but a paradigm shift towards a more comprehensive and evolving understanding of soil as a living system. It is also a commitment by CTAHR to always strive to be at the forefront of research and innovation, and to be consistent advocates for a scientific, data-driven approach that guides us in developing more sustainable, efficient, and resilient food systems while minimizing any negative impacts on the environment and society. In closing, we wish to emphasize that the transition outlined in this email only pertains to the ADSC analytical service labs in Sherman Laboratory [Manoa] for testing soil, plant tissue, forage, feed, and food. There are no impending changes being proposed for the ADSC plant disease diagnostic lab and the seed program, which will continue to be supported strongly by CTAHR.
Thank you, Ania, Jeremy and Walter
Dr. Ania Wieczorek
Dean and Director (Interim)
Associate Dean for Academic and Student Affairs (Interim)
College of Tropical Agriculture and Human Resources
University of Hawai'i Manoa
3050 Maile Way, 202 Gilmore Hall
Honolulu, HI 96822-2231 USA
Phone: (808) 956-8234
Read the publication from the Associate Deans of Extension and Research: FAQ: Changes at UH CTAHR ADSC
For those wanting to already look into other labs to send samples to, please find a few possibilities below. If sending samples off island or via mail, contact HDOA's Plant Quarantine Branch for shipping and permitting regulations and information AND contact the laboratory for their guidance with transport, payment, forms, etc. as well. You may also want to contact USDA APHIS and the lab for shipping and permitting information re: samples being sent to the mainland.
Contact the labs directly for information on soil and tissue submissions, transport, payment, permits, forms, etc. Tissue is likely to require drying at 70 degrees celsius (158 degrees fahrenheit) before mailing. The local CTAHR Extension offices will no longer assist with the packing and postage of soil and tissue samples. However, if you have insect, disease, and nematode samples, these can still be brought to the Extension Offices and you can specify to have insect, disease, and nematode samples submitted to the UH-CTAHR ADSC Lab in Hilo. For questions/concerns, contact Darren Park (darrenp@hawaii.edu; 808-956-6706) of the UH-CTAHR ADSC lab.
Your other alternatives for submitting samples for analysis may be:
- UH-Hilo Analytical Lab (Hilo, Big Island) - https://hilo.hawaii.edu/analab/
- The UH-Hilo lab's submission form does still acknowledge plant tissue samples, and has been confirmed (6/30/23) that they ARE accepting tissue samples.
- For tissue samples, circle Y (yes) for Total Carbon and Nitrogen AND Plant Tissue (B, Ca, Cu, Fe, K, Mg, Mn, Na, P, Zn).
- For soil samples, circle Y (yes) for extractable nutrients (Ca, Mg, K, Na) AND Modified Truog.
- Peter Bunn (Oahu)
- Crop Nutrient Solutions, Inc.
Specializing in Soil and Plant Nutrition
email: pbunn@pixi.com
cell: 808-386-4120
CropNutrientSolutions.com - See instructions from Pete for sending soil and leaf samples.
- Analyses and costs
- Crop Nutrient Solutions, Inc.
- Midwest Laboratories (Omaha, NE)
- Other certified laboratories
Learn How to Take Proper Soil and Leaf Samples for Coffee. But, please disregard any information on this document that's related to UH CTAHR ADSC submissions and costs.
Typical soil and leaf tissue analysis codes are S2 for soil, and T1-N (total nitrogen) and T2-All (P, K, Ca, Mg, Fe, Cu, B, Zn, Na and Mn) for leaf tissues. If you are unsure your tree problems are related to nutrition or a plant pest or disease, here are some helpful hints for Collecting Plant Disease and Insect Pest Samples for Problem Diagnosis.
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What is adequate plant nutrition for coffee plants?
While it's easy to apply whatever fertilizers that are in your closets or garage, you may be wasting your time, money and fertilizers. Also, you can look at the green leaves and suspect that a coffee tree is healthy, but some plant nutritional symptoms are inconspicuous and difficult to identify visually, thereby causing a potential downhill slide in plant health, production and again, an inefficient use of time and money, if you are not providing the tree what it actually needs. A typical soil (S2) test can help to determine pH, total phosphorus, potassium, calcium and magnesium in the soil. However, this test does not tell you what nutrients are actually available to the plant in a form that can be absorbed by the roots. For this reason, it is recommended that proper leaf samples are submitted with soil samples on at least an annual basis. Testing for T1-total nitrogen and T2 are recommended for coffee tissue (leaf) samples. Ex: some soil tests will show high levels of phosphorus (P). At low soil pH, but much of soil P it is not readily available to the plant. |
It may seem as though you have enough P to supply the plant, but in fact, the plant is deficient and the leaf tissue analyses will confirm this by showing low levels of P in the leaves when analyzed.
The "Growing Coffee in Hawaii" booklet (pages 14-17) will provide you with a general idea of why and when to fertilize your coffee trees and how much macronutrients (nitrogen, phosphorus and potassium) is required by coffee trees based on the amount of coffee cherry harvested per acre. Read about Coffee Nutritional Deficiencies and see photos of specific deficiency symptoms in this publication.
Click here to better understand the role of each essential (macro and micro) plant nutrient.
Other helpful publications:
Adequate Nutrient Levels in Soils and Plants in Hawaii (General Guide)
Recommended Plant Nutrient Levels (for various crops)
Testing your Soil - Why and How to Take a Soil-Test Sample
Interpreting Soil Nutrient Analysis Data
The "Growing Coffee in Hawaii" booklet (pages 14-17) will provide you with a general idea of why and when to fertilize your coffee trees and how much macronutrients (nitrogen, phosphorus and potassium) is required by coffee trees based on the amount of coffee cherry harvested per acre. Read about Coffee Nutritional Deficiencies and see photos of specific deficiency symptoms in this publication.
Click here to better understand the role of each essential (macro and micro) plant nutrient.
Other helpful publications:
Adequate Nutrient Levels in Soils and Plants in Hawaii (General Guide)
Recommended Plant Nutrient Levels (for various crops)
Testing your Soil - Why and How to Take a Soil-Test Sample
Interpreting Soil Nutrient Analysis Data
Collecting Plant Disease and Insect Pest Samples for Problem Diagnosis
Learn how to best collect and submit disease, insect pest and nematode samples to the UH Agricultural Diagnostic Service Center (ADSC) for diagnosis.
Learn how to best collect and submit disease, insect pest and nematode samples to the UH Agricultural Diagnostic Service Center (ADSC) for diagnosis.
- General directions on collecting samples - Collecting Plant Disease and Insect Pest Samples for Problem Diagnosis
- Submit at least 2.5 cups of roots and soil each for nematode samples
- Submit at least 2 cups of soil for S1 (pH and salinity) tests
- As of 8/16/23: ADSC Hilo analytical service fees for insect, disease, virus, fungi, nematode, and S1 (pH and salinity) tests
- GMO papaya testing of leaf tissue and seeds by the Hilo ADSC is available. The cost is $15 for the first sample and additional samples are $3.00 each up to 250 samples.
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