The Department of Soil Science and Agricultural Chemistry is one of the oldest teaching and research departments established in the Agricultural College and Research Institute, Coimbatore in 1907 to undertake research and teaching programme in the erstwhile Madras Presidency.
The earlier research works centered around soil resource investigations in command areas, manures, plant chemistry, bacteriology and animal nutrition. Soil testing, fertilizer testing, pesticide testing and pesticide residue laboratories, soil survey and land use organization, animal nutrition and soil microbiology were the important divisions functioned in this Department.
Since the inception of Tamil Nadu Agricultural University (TNAU) during 1972, the Department is entrusted with the responsibility of undertaking teaching, research and extension in various branches of Soil Science and Agricultural Chemistry in Tamil Nadu and also for coordinating the research programmes in other campuses and research stations.
Currently the Department has been functioning with units viz., Long Term Fertilizer Experiments (LTFE) unit, Soil Test Crop Response (STCR) unit, Radio Isotopes (RIL) unit, Remote Sensing and GIS unit, Soil Physics Laboratory, 15N Research Laboratory, Under Graduate (UG) Teaching unit, Post Graduate (M.Sc (Ag) &PhD) Teaching and Research unit.
- To carry out the fundamental and applied research in pedology, soil classification, soil physics, soil fertility, macro and micronutrients, radiation research, 15N studies, agricultural chemicals, farm and industrial wastes utilization and soil health
- To develop soil based technologies for the increased biomass production in the agricultural lands, degraded lands, marginal and waste lands.
- To assess the quality of surface and underground water sources for the irrigation purpose