University of Hawaii at Manoa

What you'll study

This programme focuses on the physical, chemical and biological properties of soils with an emphasis on tropical and volcanic landscapes characteristic of Hawaiʻi. Core areas include pedology (soil formation and classification), soil chemistry, soil fertility and plant nutrition, soil physics and hydrology, and soil microbiology. Students gain practical skills in soil survey and mapping, laboratory analysis of soil properties, nutrient management, erosion control and remediation of contaminated soils.

Typical modules and subjects you can expect:

• Introduction to Soil Science — fundamentals of soil formation, classification and profile description.
• Soil Chemistry and Fertility — nutrient cycling, soil acidity, cation exchange and fertiliser management.
• Soil Physics and Hydrology — water retention, movement through soils, and soil compaction.
• Soil Microbiology and Biogeochemistry — microbial processes that influence nutrient availability and carbon cycling.
• Soil Survey and Land Evaluation — field methods for mapping soils and assessing land use potential.
• Environmental Soil Management — erosion control, pollution attenuation and remediation strategies.
• Geographic Information Systems (GIS) for Soil Scientists — spatial analysis and mapping techniques applied to soils and landscapes.
• Field Courses and Research Practicum — hands-on field work across Hawaiian islands, laboratory analysis, and independent or faculty-led research projects.

The programme typically combines lectures, laboratory practicals, field trips to diverse island environments, and an independent capstone or practicum project that integrates classroom learning with applied investigations.

Entry requirements

Applicants are expected to hold a recognised secondary school certificate or equivalent. Strong performance in supporting science and quantitative subjects is important; prior study in biology, chemistry and mathematics is highly recommended. Admissions panels look for demonstration of preparedness for science-based undergraduate study through grades, personal statements and relevant experience.

For transfer students or applicants with prior tertiary study, approved college-level credits in introductory biology, chemistry or mathematics will be considered. English language proficiency must be demonstrated if previous instruction was not in English, following the university's standard requirements. Prospective students are encouraged to contact the College of Tropical Agriculture and Human Resources for programme-specific guidance on prerequisites and course planning.

Career prospects

Graduates with a BSc in Soil Science pursue careers across agriculture, environmental management, land use planning and research. Common roles include:

• Agronomic or soil fertility consultant advising growers on nutrient management and crop performance.
• Environmental consultant or specialist working on soil remediation, contamination assessment and erosion control.
• Soil surveyor or land evaluation professional involved in mapping, land capability assessment and GIS-based planning.
• Conservation and natural resource manager in government agencies, NGOs or watershed protection programmes.
• Extension agent or technical advisor supporting farmers, community groups and public agencies.
• Laboratory technician or research assistant in academic or government research projects; a pathway to postgraduate study in soil science, ecology or related fields.

The programme’s strong emphasis on tropical soils and island ecosystems is particularly valuable for employers and organisations working in Pacific Island agriculture, coastal management and conservation.

Why study at University of Hawaii at Mānoa

University of Hawaiʻi at Mānoa offers a unique setting for soil science study because of its diverse volcanic substrates, tropical climate and range of island landscapes. Students benefit from access to local field sites across multiple islands, partnerships with state and federal agencies, and research opportunities within the College of Tropical Agriculture and Human Resources.

Facilities supporting the programme include soil laboratories, greenhouses and field stations, and opportunities to work on applied projects that address Hawaiʻi’s agricultural, environmental and cultural land-use challenges. The programme’s local focus, combined with fundamental soil science training, prepares graduates for both regional careers and broader roles in environmental and agricultural science.