Agricultural Diagnostic Service Center

The ADSC is a service unit within the College of Tropical Agriculture and Human Resources (CTAHR). ADSC conducts analyses and diagnostic tests for the people and businesses of Hawai‘i.

Services provided are:

plant disease analyses
Code: D1 - General Diagnosis and Bioassay for VIRUSES OR FUNGI
Code: D2 - Disease Analysis for BACTERIA/PATHOGENS
Code: D3 - Electron Microscopy for VIRUS (By special arrangements only)
Code: D4 - Plant OR Soil Anal
feed and forage analyses
Code: F1 - Dry Matter/Moisture (DM)
Code: F2 - Ash
Code: F3 - Crude Protein (CP)
Code: F4 - Crude Fat (EE)
Code: F5 - Neutral Detergent Fiber (NDF)
Code: F6 - Acid Detergent Fiber (ADF)
Code: F7 - Lignin (PML)
Code: F8 - Cellulose (C)
Code: F9 - ALL of the following elements: (B, Ca, Cu, Fe, Mg, Mn, P, K, Na, Zn)
insect identification analyses
Code: I1- General Diagnosis
chemical analyses of soils
Code: S1 - For pH and SALINITY
Code: S2 - For pH and EXTRACTABLE NUTRIENTS: (Ca, Mg, P, K)
Code: S3 - For ANY ONE of the following: Organic Carbon (OC); Total Nitrogen (N); Boron (B); Additional Extractable Micronutrients (may be available by arrangement w/ Coord.)
chemical analyses of plant tissue
Code: T1 - For ANY ONE of the following nutrients: Total Nitrogen (N); Nitrates (N03-N); Sulfur (S); Silicon (Si); Other Elements (may be available by arrangement w/ Coord.)
Code: T2 - For ALL of the following nutrients: (B, Ca, Cu, Fe, Mg, Mn, P, K, Na, Zn)
chemical analyses of water and nutrient solutions
Code: W1 - For pH and SALINITY
Code: W2 - For ANY ONE of the following: Total Nitrogen (N); Ammonium Nitrogen (NH4-N); Nitrate Nitrogen*(acid preserved smpl., refrig.) (N03-N); Other Elements (may be available by arrangement w/ Coord.)
Code: W3 - For ALL of the following: (B, Ca, Cu, Fe, Mg, Mn, P, K, Na, Zn)
* We reserve the right to reject any sample based on improper storage and handling.

The specialized services of pesticide residue analyses continues to be conducted by the Department of Molecular Biosciences and Bioengineering (MBBE). ADSC also coordinates the interpretation of the analytical and diagnostic results and the recommendations for corrective action. Specific recommendations are ultimately prescribed by CTAHR extension specialists. ADSC handles the billing and collection of service fees.

ADSC sells study packets developed by the College's Pesticide Applicator Training (PAT) program and collects registration fees for its courses. The packets and courses help pesticide handlers prepare for the Hawaii Department of Agriculture's examination for "restricted use" pesticide certification.