International Year of Soils: April 2015

Apr 09, 2015

Soils clean and capture water

During a closing panel discussion at the 2015 Precision Agriculture Conference in March, Tyler Vollmershausen offered up an interesting thought to the people in attendance.

“The more I know about soil, the less I treat it like dirt,” he said.

The United Nations and Tyler Vollmershausen seem to share that sentiment because the Food and Agriculture Organization of the UN has declared 2015 the International Year of Soils.

The goals of the yearlong tribute to soil are to raise awareness about the impacts soil has on everyday life that we take for granted.

In conjunction with the United Nations, the Soil Science Society of America (SSSA) is creating videos and themes to go along with each month.

April’s theme is “soils clean and capture water”.

As he’s done in January, February and March, Jim Toomey from the SSSA appears in a short video about how soils play a role in cleaning water once its fallen from the sky.

“In a rural setting, water has more opportunity to sink into the soil,” he said in the video. “In an urban setting, there are fewer opportunities for water to sink into the soil.”

Toomey described three ways in which soil cleans water:

Physical – The size of the pores of the soil determine how good of a job it does when cleaning water. The smaller the pores the more water gets filtered. Pores that are too big will not catch enough sediment and ones that are too small will block water from passing through completely.

Chemical – Soil’s negative charge removes the positive ions from the water when it passes over it. Calcium, magnesium and potassium are removed from the water and absorbed by the soil.

Biological – Soil microbes can change organic forms of nitrogen into ammonium, while others can even create nitrogen gas.

Be sure to go back and read the soil themes for the previous three months:

January - Soils Sustain Life
February – Soils Support Urban Life
March – Soils Support Agriculture

Don’t forget to check back in during May when the theme is “soils support buildings and infrastructure”.

Join the discussion and tell us about something you’ve learned about soil that you didn’t know before.

Video: Spring weed control in winter wheat with Broadway® Star (pyroxsulam + florasulam)

#CortevaTalks brings you a short update with Cereal Herbicides Category Manager, Alister McRobbie, on how to get the most out of Broadway® Star.

Significant populations of grassweeds, including ryegrass and brome, can threaten winter wheat yields. Spring applications of a contact graminicide, such as Broadway Star from Corteva Agriscience, can clear problem weeds, allowing crops to grow away in the spring.

Broadway Star (pyroxsulam + florasulam) controls ryegrass, sterile brome, wild oats and a range of broad-leaved weeds such as cleavers. It can be applied to winter wheat up until GS32, but the earlier the application is made, the smaller the weed, and the greater the benefit to the crop. Weeds should be actively growing. A good rule of thumb is that if your grass needs cutting, conditions are right to apply Broadway Star.