Soil Scientist Career

Soil scientists study the physical, chemical, and biological characteristics of soils to determine the most productive and effective planting strategies. Their research aids in producing larger, healthier crops and more environmentally sound farming procedures. There are about 30,000 agricultural and food scientists, a group that includes soil scientists, working in the United States.

Soil Scientist Career History

Soil Scientist CareerHundreds of years ago, farmers planted crops without restriction; they were unaware that soil could be depleted of necessary nutrients by overuse. When crops were poor, farmers often blamed the weather instead of their farming techniques.

Soil, one of our most important natural resources, was taken for granted until its condition became too bad to ignore. An increasing population, moreover, made the United States aware that its own welfare depends on fertile soil capable of producing food for hundreds of millions of people.

Increasing concerns about feeding a growing nation brought agricultural practices into reevaluation. In 1862, the U.S. Department of Agriculture (USDA) was created to give farmers information about new crops and improved farming techniques. Although the department started small, today the USDA is one of the largest agencies of the federal government.

Following the creation of the USDA, laws were created to further promote and protect farmers. The 1933 Agricultural Adjustment Act inaugurated a policy of giving direct government aid to farmers. Two years later, the Natural Resource Conservation Service developed after disastrous dust storms blew away millions of tons of valuable topsoil and destroyed fertile cropland throughout the Midwestern states.

Since 1937, states have organized themselves into soil conservation districts. Each local division coordinates with the USDA, assigning soil scientists and soil conservationists to help local farmers establish and maintain farming practices that will use land in the wisest possible ways.

The Job of Soil Scientists

Soil is formed by the breaking of rocks and the decay of trees, plants, and animals. It may take as long as 500 years to make just one inch of topsoil. Unwise and wasteful farming methods can destroy that inch of soil in just a few short years. In addition, rainstorms may carry thousands of pounds of precious topsoil away and dissolve chemicals that are necessary to grow healthy crops through a process called erosion. Soil scientists work with engineers to address these issues.

Soil scientists spend much of their time outdoors, investigating fields, advising farmers about crop rotation or fertilizers, assessing field drainage, and taking soil samples. After researching an area, they may suggest certain crops to farmers to protect bare earth from the ravages of the wind and weather.

Soil scientists may also specialize in one particular aspect of the work. For example, they may work as a soil mapper or soil surveyor. These specialists study soil structure, origins, and capabilities through field observations, laboratory examinations, and controlled experimentation. Their investigations are aimed at determining the most suitable uses for a particular soil.

Soil fertility experts develop practices that will increase or maintain crop size. They must consider both the type of soil and the crop planted in their analysis. Various soils react differently when exposed to fertilizers, soil additives, crop rotation, and other farming techniques.

All soil scientists work in the laboratory. They examine soil samples under the microscope to determine bacterial and plant-food components. They also write reports based on their field notes and analyses done within the lab.

Soil science is part of the science of agronomy, which encompasses crop science. Soil and crop scientists work together in agricultural experiment stations during all seasons, doing research on crop production, soil fertility, and various kinds of soil management.

Some soil and crop scientists travel to remote sections of the world in search of plants and grasses that may thrive in this country and contribute to our food supply, pasture land, or soil replenishing efforts. Some scientists go overseas to advise farmers in other countries on how to treat their soils. Those with advanced degrees can teach college agriculture courses and conduct research projects.

Soil Scientist Career Requirements

High School

If you’re interested in pursuing a career in agronomy, you should take college preparatory courses covering subjects such as math, science, English, and public speaking. Science courses, such as earth science, biology, and chemistry, are particularly important. Since much of your future work will involve calculations, you should take four years of high school math. You can learn a lot about farming methods and conditions by taking agriculture classes if your high school offers them. Computer science courses are also a good choice to familiarize yourself with this technology. You should also take English and speech courses, since soil scientists must write reports and make presentations about their findings.

Postsecondary Training

A bachelor’s degree in agriculture or soil science is the minimum educational requirement to become a soil scientist. Typical courses include physics, geology, bacteriology, botany, chemistry, soil and plant morphology, soil fertility, soil classification, and soil genesis.

Research and teaching positions usually require higher levels of education. Most colleges of agriculture also offer master’s and doctoral degrees. In addition to studying agriculture or soil science, students can specialize in biology, chemistry, physics, or engineering.

Certification or Licensing

Though not required, many soil scientists may seek certification to enhance their careers. The American Society of Agronomy offers certification programs in the following areas: crop advisory, agronomy, crop science, soil science, plant pathology, and weed science. In order to be accepted into a program, applicants must meet certain levels of education and experience.

Other Requirements

Soil scientists must be able to work effectively both on their own and with others on projects, either outdoors or in the lab. Technology is increasingly used in this profession; an understanding of word processing, the Internet, multimedia software, databases, and even computer programming can be useful. Soil scientists spend many hours outdoors in all kinds of weather, so they must be able to endure sometimes difficult and uncomfortable physical conditions. They must be detail-oriented to do accurate research, and they should enjoy solving puzzles—figuring out, for example, why a crop isn’t flourishing and what fertilizers should be used.

Exploring Soil Scientist Career

The National FFA Organization can introduce you to the concerns of farmers and researchers. A 4-H club can also give you valuable experience in agriculture. Contact the local branch of these organizations, your county’s soil conservation department, or other government agencies to learn about regional projects. If you live in an agricultural community, you may be able to find opportunities for part-time or summer work on a farm or ranch.


Most soil scientists work for state or federal departments of agriculture. However, they may also work for other public employers, such as land appraisal boards, land-grant colleges and universities, and conservation departments. Soil scientists who work overseas may be employed by the U.S. Agency for International Development.

Soil scientists are needed in private industries as well, such as agricultural service companies, banks, insurance and real estate firms, food products companies, wholesale distributors, and environmental and engineering consulting groups. Private firms may hire soil scientists for sales or research positions.

Starting Out

In the public sector, college graduates can apply directly to the Resources Conservation Service of the Department of Agriculture, the Department of the Interior, the Environmental Protection Agency, or other state government agencies for beginning positions. University placement services generally have listings for these openings as well as opportunities available in private industry.


Salary increases are the most common form of advancement for soil scientists. The nature of the job may not change appreciably even after many years of service. Higher administrative and supervisory positions are few in comparison with the number of jobs that must be done in the field.

Opportunities for advancement will be higher for those with advanced degrees. For soil scientists engaged in teaching, advancement may translate into a higher academic rank with more responsibility. In private business firms, soil scientists have opportunities to advance into positions such as department head or research director. Supervisory and manager positions are also available in state agencies such as road or conservation departments.


According to the U.S. Department of Labor, median earnings in 2004 for agricultural scientists were $50,840. The lowest-paid 10 percent earned less than $28,410; the middle 50 percent earned between $37,890 and $69,120; and the highest-paid 10 percent made more than $88,840.

Federal salaries for soil scientists were higher; in 2004, they made an average of $73,573 a year. Government earnings depend in large part on levels of experience and education. Those with doctorates and a great deal of experience may be qualified for higher government positions, with salaries ranging from $70,000 to $90,000. Other than short-term research projects, most jobs offer health and retirement benefits in addition to your annual salary.

Work Environment

Most soil scientists work 40 hours a week. Their job is varied, ranging from fieldwork collecting samples, to labwork analyzing their findings. Some jobs may involve travel, even to foreign countries. Other positions may include teaching or supervisory responsibilities for field training programs.

Soil Scientist Career Outlook

The Occupational Outlook Handbook reports that employment within the field of soil science is expected to grow more slowly than the average job through 2014. The career of soil scientist is affected by the government’s involvement in farming studies; as a result, budget cuts at the federal and (especially) state levels will limit funding for this type of job. However, private businesses will continue to demand soil scientists for research and sales positions. Companies dealing with seed, fertilizers, or farm equipment are examples of private industries that hire soil scientists.

Technological advances in equipment and methods of conservation will allow scientists to better protect the environment, as well as improve farm production. Scientists’ ability to evaluate soils and plants will improve with more precise research methods. Combine- mounted yield monitors will produce data as the farmer crosses the field, and satellites will provide more detailed field information. With computer images, scientists will also be able to examine plant roots more carefully.

A continued challenge facing future soil scientists will be convincing farmers to change their current methods of tilling and chemical treatment in favor of environmentally safer methods. They must encourage farmers to balance increased agricultural output with the protection of our limited natural resources.

For More Information:

American Society of Agronomy

Soil Science Society of America