The Effects of Grazing Management on Water Quality. Kirk Schwarte Iowa State University [email protected] Materials and Methods. Six, 30 acre, cool season grass pastures Two blocks, three treatments Continuous stocking with unrestricted stream access (CSU)
Iowa State University
Die / Decompose
Hypoxia / Eutrophication
Slopes ranged from 3.4° to 33°, with the average of 13°
Pasture Management Guide, Iowa State University
Probability of cattle being within the streamside zone in pastures with continuous stocking with unrestricted stream access (CSU), continuous stocking with restricted stream access (CSR)
Mean proportions of time that cattle spent within the 110 ft zone of pastures with continuous stocking with unrestricted stream access (CSU), continuous stocking with restricted stream access (CSR), or rotational stocking (RS) during the 2008 grazing season.
a = differences between CSU and CSR
b = differences between CSU and RS
(P < 0.10)
*RS riparian paddock was stocked for a total of 6 days throughout the grazing season, or 4.3% of time from mid May through September.
% of Pasture in Riparian Area
Farm A- 24.3
Farm B- 2.5
Farm E- 28.7
Fencing must be maintained for 10 years, property line fences are not covered.
Must be maintained for 20 years and built to store 35 years worth of sediment
Other grazing practices must be followed and documented before a payment is received.
Maintained for 10 years and landowner must get all construction permits
This material is based upon work supported by the Cooperative State Research, Education, and Extension Service, U.S. Department of Agriculture, under Award No. 2006-51130-03700. Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the authors and do not necessarily reflect the view of the U.S. Department of Agriculture.