Residue Cover on the Soil Surface 1 of 3 (7873417086)

Forfatter/Opretter:

USDA NRCS South Dakota

Kredit:

Residue Cover on the Soil Surface 1 of 3

Shortlink:

https://dkwiki.dk/b/317de

kilde:

Wikimedia Commons

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3264 x 2448 Pixel (3598226 Bytes)

beskrivelse:

During DakofaFest 2012, the USDA Natural Resources Conservation Service in South Dakota focused on Soil Health at their booth in the USDA tent at DakotaFest.

The Soil Expo display run at the NRCS 20120 DakotaFest presentation demonstrated the soil erosion and sedimentation losses from conventionally tilled samples verses No-Till cropland samples.

An experiment was performed on two "cut outs" of soil - one from a No-till field and one from a conventional tillage field. "Rain" was put on the samples to see how the soil structure reacted. The No-till field had better infiltration with much less water runoff that was also more clear. The photo shows the conventional tillage field had more runoff that with soil particles in the water.

Once the "rain" was over, the two trays were examined. The No-till tray had water infiltration through the bottom. This meant that the water had good infiltration to the soil profile. The bottom of the conventional tillage sample was almost fully dry meaning that the water had runoff and not infiltrated the top few inches of the soil profile.

Licens:

Public domain