27 min listen
Salinity & Sodicity Issues with Naeem Kalwar of NDSU Extension
FromSoil Sense
ratings:
Length:
29 minutes
Released:
Sep 19, 2019
Format:
Podcast episode
Description
Naeem Kalwar is an extension Soil Health Specialist in the Langdon Research Extension Center. His expertise is shared today in facing sodicity and salinity issues in your soils.
The term salinity refers to the potential for high salt levels in the soil which can decrease water absorption at the root-level resulting in drought stressed crops. Fortunately salinity does not affect soil structure allowing for the smooth movement of water and air through the soil despite the increased salt content. Good drainage and improved soil water infiltration can help manage salinity concerns.
Sodicity, on the other hand, creates an issue that is not as easy to correct. With sodicity, a bond between the sodium molecules and the clay is formed. This directly affects the ability of the water to move through the soil as it will settle in dense layers. With an increase in sodicity you will also have a higher retention of salt resulting in increased salinity. Amendments like gypsum are required to increase the aggregation and good structure of the soil in order to compensate for the structural changes caused by sodicity.
“Our groundwater has very high salt levels, plus sodium. And this sodium i’m talking about is not presented as salt. This sodium gets attracted to the negative charges of clay and hummus soil particles, and causes sodicity or the breakdown of soil aggregates...so we have two different problems: salt and sodicity.” - Naeem Kalwar
This Week on Soil Sense:
Meet Naeem Kalwar an extension Soil Health Specialist
Explore the differences between soils in different regions
Learn about the significance of salinity and sodicity in a soil’s health
Discover how to identify and address these concerns
Connect with Soil Sense:
Soil Sense Initiative
Soil Sense Podcast is hosted by Tim Hammerich of the Future of Agriculture Podcast.
The term salinity refers to the potential for high salt levels in the soil which can decrease water absorption at the root-level resulting in drought stressed crops. Fortunately salinity does not affect soil structure allowing for the smooth movement of water and air through the soil despite the increased salt content. Good drainage and improved soil water infiltration can help manage salinity concerns.
Sodicity, on the other hand, creates an issue that is not as easy to correct. With sodicity, a bond between the sodium molecules and the clay is formed. This directly affects the ability of the water to move through the soil as it will settle in dense layers. With an increase in sodicity you will also have a higher retention of salt resulting in increased salinity. Amendments like gypsum are required to increase the aggregation and good structure of the soil in order to compensate for the structural changes caused by sodicity.
“Our groundwater has very high salt levels, plus sodium. And this sodium i’m talking about is not presented as salt. This sodium gets attracted to the negative charges of clay and hummus soil particles, and causes sodicity or the breakdown of soil aggregates...so we have two different problems: salt and sodicity.” - Naeem Kalwar
This Week on Soil Sense:
Meet Naeem Kalwar an extension Soil Health Specialist
Explore the differences between soils in different regions
Learn about the significance of salinity and sodicity in a soil’s health
Discover how to identify and address these concerns
Connect with Soil Sense:
Soil Sense Initiative
Soil Sense Podcast is hosted by Tim Hammerich of the Future of Agriculture Podcast.
Released:
Sep 19, 2019
Format:
Podcast episode
Titles in the series (100)
Worms, Water, and Soil Health Research in Action by Soil Sense