About

Dotun Arije

Soil Scientist & Agronomist

I am a soil scientist and agroecosystem biogeochemist whose work focuses on understanding how agricultural management influences soil health, carbon and nutrient cycling, greenhouse gas emissions, and crop productivity. I am currently a Ph.D. Candidate in Plant and Environmental Science at New Mexico State University, where my research integrates field experimentation, laboratory analyses, environmental monitoring, and process-based biogeochemical modeling to evaluate climate-smart agricultural practices. My research spans soil carbon sequestration, greenhouse gas dynamics, cover cropping systems, nutrient management, and agricultural systems modeling. I work with models including DayCent, APSIM, DSSAT, and DNDC to complement field observations and investigate how agricultural systems respond to management and changing environmental conditions. Beyond research, I am passionate about connecting science with agricultural practice. Through university Extension activities and MyAgricWorld, I have worked with farmers and agricultural stakeholders across West Africa and the U.S. High Plains, translating soil and crop science into practical information for agricultural decision-making. My broader goal is to contribute research and decision-support tools that help build productive, resource-efficient, and resilient agricultural systems.

My Journey

My journey in agricultural research began at the Federal University of Technology, Akure (FUTA), Nigeria, where I studied Crop, Soil and Pest Management. My early research examined the residual effects of the herbicide diuron on Amaranthus cruentus, before my interests increasingly shifted toward soil fertility, nutrient management, and crop productivity. I continued at FUTA for my master’s degree in Soil Fertility Management, graduating with Distinction. My master’s research combined field experimentation with the CERES-Maize model to evaluate maize responses to organic fertilizer rates, an experience that introduced me to the value of using agricultural models alongside field observations.

Alongside my academic work in Nigeria, I became increasingly involved in translating agricultural science into practice. Through MyAgricWorld, which I founded in 2015, I worked with farmers and agribusiness stakeholders across Nigeria and other West African countries on soil assessment, fertilizer recommendations, crop production, and agricultural decision-making. This experience strengthened my interest in research that does not end with scientific publication but can also inform practical management decisions.

In 2023, I began my Ph.D. in Plant and Environmental Science at New Mexico State University. My doctoral research expanded my work from crop and soil fertility management into agroecosystem biogeochemistry, with emphasis on soil organic carbon, nitrogen cycling, greenhouse gas emissions, cover crops, compost, and climate-smart management in semi-arid agricultural systems. I now integrate field measurements, laboratory analyses, environmental monitoring, and process-based models such as DayCent, APSIM, DSSAT, and DNDC to investigate agricultural systems across spatial and temporal scales.

This progression from field agronomy and soil fertility in Nigeria to soil biogeochemistry and agricultural systems modeling in the U.S., continues to shape how I approach research: combining field evidence, quantitative tools, and practical agricultural knowledge to address questions of soil health, productivity, and environmental sustainability.

Research

Peer-reviewed research spanning soil health, soil carbon, crop production, and agricultural systems modeling.

Teaching

Undergraduate teaching and laboratory instruction in soil science, general agriculture, soil fertility, and crop modeling.

Extension

Producer-oriented articles, technical resources, training, and advisory support developed for farmers and agricultural stakeholders.

Selected Awards & Grants

Recognition for academic achievement, research, and professional development.

Western SARE Graduate Student Grant — $29,464

Competitive research funding supporting field assessment and DayCent modeling of cover crop and compost management.

Tony Elumelu Foundation Entrepreneurship Programme — $5,000

Selected as a 2026 awardee of the entrepreneurship programme supporting the development of innovative enterprises.

Best Poster Presentation — 2017

Awarded in the Natural Resources Management category at the IARSAF 20th Annual Symposium, IITA, Ibadan, Nigeria.