Small Farm News - Oregon Small Farms - Oregon State University

example you can use this tool to know exactly how much
area you have that has specific soils or use the information
for fencing needs depending on the soil criteria you find
on the map. Likewise if you want to fertilize your pastures
and do not know how much area you have, this tool can
help you determine that area to fertilize etc.
For more detailed soil information, click on the third
tab called “soil data explorer.” Here you will get five
different tabs that give you details on your specific
soils. First tab will give you a short soils 101 course
on terminologies and terms used to describe soils. The
second tab gives
you suitability and
land capability
classification of
your selected area.
Of importance
here is the land
classification
section where you
can find out farm
land classification
and forage
suitability group
and also vegetative
productivity where
you can find
crop and forestry
productivity indices
for your soil and
also yields for
irrigated and nonirrigated
crops. The
land classification
ratings can help
you know for sure
if you are growing
crops suitable for
your area. Class 1
soils are very productive while class 8 soils have severe
limitations for any crop production. With this information
you can determine maybe why some crops do not do well
in your location if you have class 7 or 8 of soils and are
trying to grow a niche crop that requires class 2 or 3 soils.
Under each title you choose, there is a detailed description
beneath the soil map that explains what you are seeing
and how such details were calculated.
The soil properties and quality tab describes soil
physical and chemical properties of your soils. Most
important is the soil pH for each soil series in your
selected area plus cation exchange capacities (CEC),
electrical conductivity, soil organic matter, % sand,
% clay,% silt, and for those on coastal soils, sodium
adsorption ratios are important. These are important
chemical properties to know if you have not done a soil
test yet. Also depth to water table might be important on
bottom soils that are prone to flooding and you can find
this under the water features heading.
The last two
tabs are soil
reports and
publications.
These are for
those familiar
with soil
classifications
and want to
read more about
their soils. Here
you can find
information on
the specific soils
you have and
how they are
classified and
how they are
distributed in
your property.
The wealth
of knowledge
in the online
soil survey is
immerse. Use
Example of soil pH rating for different soils in selected area (source: Web Soil Survey)
this free tool
to understand more about
your soils and how you can manage them. If you have
any questions on your soils or how to use this web soil
survey call the small farm team or emails any of us. The
local USDA-Natural Resource Conservation Service and
Soil and Water Conservation District personnel can also
help you understand the type of soils in your property.
Oregon Small Farm News Vol. II No. 2 Page 9