Soil Health and Nutrient Management
This course has closed
This training will provide an overview of soil basics, with a deeper dive into soil nutrient management through methods such as pH testing. 

These are pre-recorded PowerPoints with interactive elements added.  While there may be some awkward pauses, once you engage in the interactive content, the video will resume. To move onto the next course, click the orange arrow to the left of the screen. 

The Series includes:

  • Introduction to Soils with Amy Koch, Assistant Director of Soil Scientist, with the Natural Resources Conservation Service.

  • Nutrient Management with Josh Silva, Extension Agent with the University of Hawaii at Manoa, College of Tropical Agricultural And Human Resources.

  • Cover Crops with Dr. Kooh-Hui Wang, Associate Professor with the University of Hawaii at Manoa, College of Tropical Agricultural And Human Resources.

Michelle Gorham
OACA - Executive Director
Amy Koch
NRCD - Assistant Director for Soil Science
Dr. Koon-Hui Wang
Associate Professor, Department of Plant and Environmental Protection Sciences, University of Hawaiʻi at Mānoa. Koon-Hui holds a B.S. from the National Taiwan University, M.S. in Horticulture from the University of Hawaii, and Ph.D. Plant Pathology, University of Hawaii. She specializes in cover cropping, nematology, natural farming, soil health management, sustainable pest management. You can access her publications by visiting:
Joshua Silva
Josh has Bachelor’s and Master’s degrees in natural resources and soil science, respectively, from UH Manoa. Working in Jonathan Deenik’s lab, he was instrumental in helping to develop the online Hawai‘i Soil Atlas. He is very familiar with the diverse soil types throughout Hawai‘i, and the practices to properly manage them for crop production. His most recent position (with the UH-CTAHR Human Nutrition, Food, and Animal Sciences Dept. Children’s Healthy Living Program) was to manage research activities for an agro-ecologically-based project on the Pacific Island of Pohnpei in the Federated States of Micronesia - to improve the health, food security, and livelihood of indigenous and minority groups around the Pacific Region through community participatory research. Josh is well versed in all aspects of farming in the Hawaiian Islands, with a good understanding of both traditional Hawaiian agriculture and the range of contemporary cropping systems found around the islands.