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Mob Grazing: What is it all about? Alexander “Sandy” Smart © 2014 Board of Regents, South Dakota State University iGrow.org.

Published byOlivia Montgomery Modified over 9 years ago

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Presentation on theme: "Mob Grazing: What is it all about? Alexander “Sandy” Smart © 2014 Board of Regents, South Dakota State University iGrow.org."— Presentation transcript:

1 Mob Grazing: What is it all about? Alexander “Sandy” Smart © 2014 Board of Regents, South Dakota State University iGrow.org

2 iGrow.org Definition Shared Characteristics High stocking density (25,000 to over 1 million pounds of live weight per acre) Frequent movement of livestock (Once per day to several times per day) High trampling and/or consumption of forage High labor and management © 2014 Board of Regents, South Dakota State University iGrow.org

3 iGrow.org Common Objectives Improve the land (landscaping) Vegetation and soil health Increase harvest efficiency Carrying capacity © 2014 Board of Regents, South Dakota State University iGrow.org

4 iGrow.org Mob Grazing Project Sites New Underwood Quinn Kadoka Selby Eureka Reliance Chamberlain Hayti Volga Gary

5 iGrow.org Stocking density

6 iGrow.org © 2014 Board of Regents, South Dakota State University iGrow.org Harvest Efficiency 33% 43% 63%34%

7 iGrow.org Different stocking densities - Volga © 2014 Board of Regents, South Dakota State University iGrow.org

8 iGrow.org 2012 % Grass Cover Mob grazing reduced grass cover by 59% whereas rotation reduced grass by 43% for sites sampled before and after both grazing systems.

9 iGrow.org Before vs. After Mob Grazing July 11, 2012 (57,000 lbs/acre for 24 hours) BeforeAfter

10 iGrow.org After Mob vs. After Rotation July 17, 2012 Mob (1,000,000 lbs/acre) for 1.3 hours Rotation (55,000 lbs/acre) for 12 hours

11 iGrow.org % New litter cover

12 iGrow.org Dung density

13 iGrow.org 2012 Tour

14 iGrow.org 2013 Tour

15 iGrow.org Videos Pat Guptill https://www.youtube.com/watch?v=fWC9qkYdDNA https://www.youtube.com/watch?v=fWC9qkYdDNA Charlie Totton https://www.youtube.com/watch?v=MJ4tlSkVxAk https://www.youtube.com/watch?v=MJ4tlSkVxAk Rick Smith https://www.youtube.com/watch?v=NA9D5eiLHlw https://www.youtube.com/watch?v=NA9D5eiLHlw © 2014 Board of Regents, South Dakota State University iGrow.org

16 iGrow.org Summary Producers are getting a higher harvest efficiency Haven’t documented a change in productivity or soil health yet © 2014 Board of Regents, South Dakota State University iGrow.org

17 iGrow.org Questions © 2014 Board of Regents, South Dakota State University iGrow.org

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