Grazing Basics Central Wisconsin Grazing Meetings March 2008 Craig Saxe UW-Extension, Juneau Co. 211 Hickory Street Mauston WI 53948 (608) 847-9329 craig.saxe@ces.uwex.edu We’ll be covering • What is rotational grazing • Why use rotational grazing • Understanding plant growth • Setting up a grazing system • Fencing, watering and frost seeding • Grazing tips Grazing Quotes • Management is the single most important factor determining financial success on all farms • Grazing won’t turn a poor manager into a good one • Grazing isn’t about cows & grass it’s about a different type of thinking • Grazing isn’t a goal it’s a Tool What Grazing Management and Golf have in common • It’s something you do outdoors • Doing it well is more difficult then it looks • Many people “talk” a much better game than they play • Studying about how to do it can be helpful, but real success requires practice and experience Don Ball, 1999 What Grazing Management and Golf have in common • Weather can have a huge influence on the results obtained • There are many products you can buy to better your game, but a real expert only needs a few basics • No matter how good you are, there is always room for improvement Don Ball, 1999 What is Rotational Grazing? • Farming is all about capturing the sun’s energy and converting it to usable products. L. Paine, 2005 • If we start by maximizing the amount of energy we capture, all other steps in the process have greater potential to yield profits. L. Paine, 2005 Number of Days of Bare Soil 350 300 250 200 150 100 50 0 Continuous Corn Continuous Wheat Continuous Alfalfa Pasture L. Paine, 2005 Many Pastures are Continuously Grazed W S This usually means: • Lower yields due to selective grazing • Greater weed problems • Potential for erosion problems in certain areas • No management or poor management of forage resource Rotational Grazing 1. Pastures are subdivided into smaller areas (paddocks) 2. A portion of the pasture is grazed Lane while the remainder “rests” Rest allows pasture to: • Recover from grazing, • Rebuild energy reserves & plant vigor • Increase forage production Management Intensive Rotational Grazing W W Corral Lane W W Management Intensive Rotational Grazing (MIRG) involves even greater numbers of paddocks and/or subdivision within paddocks to increase amount of rest and decrease days grazing each rotation Strip Grazing Lane Strip Grazing Which grazing system is right for me? CONSIDERATIONS: • What’s best for the grass • What’s best for the livestock • What moves you toward your goals!!! Why use Rotational Grazing? Managed Intensive Grazing Advantages • We control where animals graze • Increases yield • Increase carrying capacity • Extend grazing season in the fall • Increases forage quality • Increases animal performance • Lowers cost of production • Maximizes efficiency of your time and resources • Offers greater management flexibility It could be argued that managed intensive grazing comes at an added cost • Fence • Water systems • Labor • Higher level of management required Why manage grazing? • Reduces erosion • Improves water quality • Enhance wildlife habitat • Improves range or pasture condition Texas Creek, Colorado, BLM website on Health Riparian Areas CIAS 2006 CIAS 2006 Gross Returns Per Acre $350 313 $300 $250 $200 196 192 $150 112 $100 $50 $0 Intens. Pasture Contin. Pasture Hay Corn Silage Penn State 1992 Direct Costs Per Acre $140 129 $120 $100 $80 53 $60 $40 $20 19 7 $0 Intens. Pasture Contin. Pasture Hay Corn Silage Penn State 1992 Profit Per Acre $140 129 $120 $100 75 $80 58 $60 $40 20 $20 $0 Intens. Pasture Contin. Pasture Hay Corn Silage Penn State 1992 Dairy Economic Comparison (15,000 vs. 18,000 lbs/cow/yr) Confinement Full Machinery Return To Labor Grazing Reduced Machinery 36,528 39,409 43,640 52,118 54,997 54,227 7.07 8.08 9.66 10.73 Return To 6.40 Labor ($/hr) 8.95 * Researchers caution that this study is based on simulated dairy models CIAS Study Livestock Enterprise Comparison Enterprise Stocking Rate Lbs product per acre Gross per acre Cow-calf-low intensity Cow-calf-intensive 5 acres 100 calf $60 2 acres 250 calf $150 Stocker calf-low 1 acre intensity Stocker calf-intensive 0.5 acre 270 gain $95 540 gain $189 Sheep-low intensity 0.5 acre 225 lamb $113 Sheep-high intensity 0.2 acre 560 lamb $280 Ohio State Livestock Enterprise Comparison Enterprise Stocking Rate Lbs product per acre Gross per acre Cow-calf-low intensity Cow-calf-intensive 5 acres 100 calf $60 2 acres 250 calf $150 Stocker calf-low 1 acre intensity Stocker calf-intensive 0.5 acre 270 gain $95 540 gain $189 Sheep-low intensity 0.5 acre 225 lamb $113 Sheep-high intensity 0.2 acre 560 lamb $280 Ohio State Livestock Enterprise Comparison Enterprise Stocking Rate Lbs product per acre Gross per acre Cow-calf-low intensity Cow-calf-intensive 5 acres 100 calf $60 2 acres 250 calf $150 Stocker calf-low 1 acre intensity Stocker calf-intensive 0.5 acre 270 gain $95 540 gain $189 Sheep-low intensity 0.5 acre 225 lamb $113 Sheep-high intensity 0.2 acre 560 lamb $280 Ohio State Livestock Enterprise Comparison Enterprise Stocking Rate Lbs product per acre Gross per acre Cow-calf-low intensity Cow-calf-intensive 5 acres 100 calf $60 2 acres 250 calf $150 Stocker calf-low 1 acre intensity Stocker calf-intensive 0.5 acre 270 gain $95 540 gain $189 Sheep-low intensity 0.5 acre 225 lamb $113 Sheep-high intensity 0.2 acre 560 lamb $280 Ohio State Understanding Plant Growth Deitz, NRCS Deitz, NRCS Forage Quality Growth Curve Best time to graze Yield Seasonal growth patterns in forages Species Kentucky bluegrass Orchardgrass Reed Conarygrass Alfalfa Red clover White clover April May June July Aug. Sept. Oct. Monthly forage production in 2-acre grass and grass-legume pastures 3000 Lbs. Forage 2500 2000 1500 1000 animal need 500 0 May June July Aug. Sept. Oct. Grass Pasture Good Management Poor Management Grass-Legume Pasture Good Management Poor Management Setting up a Grazing System Fundamentals of successful grazing management • Meet the nutritional needs of the livestock from standing pasture • Optimize pasture yield, quality, and persistence • Maintain or enhance the natural resource base • Integrate appropriate technology and knowledge into a practical system Setting up a Rotation • Size of animal • Number of animals • Daily intake • Forage availability • Desired rotation length The example to follow was created by Laura Paine How much forage is out there? Rule of thumb: Figure about 400 pounds dry matter per acre per inch of cool season pasture. L. Paine How much do my animals need? Rule of thumb: Figure 2.5 to 4% of body weight dry matter per animal per day. L. Paine How big should my paddocks be? • Paddock size equals: Number of head x Daily Intake (3% ) x No. of Days Available Forage/Ac./Rotation L. Paine What does a sheep eat in a day? • One ewe/lamb pair weighs about 200 lb • Daily forage need/pair = 3% of body weight = 200 x 0.03 = 6 lb of dry matter/day L. Paine What does your flock eat in a day? • One ewe/lamb pair eats 6 lb/day • 20 pairs eat 120 lb/day • 50 pairs eat 300 lb/day • 100 pairs eat 600 lb/day L. Paine When should I graze and how much forage is out there? • Graze when pasture is 8 to 10 inches high (depending on species). • Take half-leave half rule: graze down to 4 or 5 inches. • At 400 lb/inch, you have 1600 to 2000 lb/acre to work with. L. Paine How long should I leave the flock on one paddock? • One to three days. • Above 3 days, you’re regrazing grass that you grazed the first day. • The shorter the rotation, the better quality and forage utilization you’ll have. L. Paine Putting it all together • Flock of 100 ewes with lambs. • 3-day rotation. • Need 600 lb forage/day. • 600 lb x 3 days = 1800 lb/paddock. L. Paine Putting it all together • Ready to graze pasture = 1600 lb forage/acre available to use. • Acreage needed to last 3 days = 1800/1600 = 1.13 acres. • Just over one acre/paddock. L. Paine Determine Number of Paddocks • 30 days 3 day rotation + 1 = 11 paddocks • 11 paddocks x 1.13 acres/paddock = 12.43 acres L. Paine Another Example: Stocker Cattle • 100 stockers or heifers, 1 day rotation, 2000 lb/a available forage • Beginning weight = 400 lb; ending weight = 800 lb; • average weight = 600 lb. • Paddock size equals: (100 x (600 x 0.03) x 1) 2000 = (100 x (18) x 1) 2000 = 1800 x 1 2000 = 1800 2000 = *0.9 acres* L. Paine Determine Number of Paddocks • 30 days 1 day rotation + 1 = 31 paddocks • 31 paddocks x 1 acre/paddock = 31 acres L. Paine Stockers or Heifers • 100 animals • 1 day rotation • 30 day cycle • 1 acre/paddock • 31 paddocks L. Paine The Rest Period • Should vary according to plant growth • In general, must increase as growth rate slows • Relates closely to seasonal forage growth • Need to rotate between paddocks every 3-6 days (or less) Relationship of rest period to pasture mass during periods of rapid vs. slow growth Optimum Lbs. Rest DM / acre Period 0 5 10 15 20 Period of fast plant growth (days) 25 0 10 20 30 40 Period of slow plant growth (days) 50 Rest Meeting the needs of the pasture plant Maximizing Intake • Three controlling factors • Grazing time • Biting rate • Bite size Jim Gerrish, Dodge County Grazing Conference, 2002 Of the three controlling factors, bite size is all we can control! Jim Gerrish, Dodge County Grazing Conference, 2002 (% liveweight) Intake Change in daily intake from day 1 to day 7 of week grazing period 5 4.5 4 3.5 3 2.5 2 1.5 1 0.5 0 1 2 3 4 5 6 7 Jim Gerrish, Dodge County Grazing Conference, 2002 Which will cause more overgrazing? The stocking rate of both paddocks is identical: 100 Animal Days per Acre. The effect on the paddocks will be much different. Stocking Rate (animals/acre) • Can use formulas for actual numbers • Thumb rule; 1000 pound animal per 2-4 acres • Intensive Rotational Grazing = 1000 pound beef animal to 1-1.5 acres • Traditional “Under-managed” pastures = 1000 pound animal to 5-10 acres Radial pasture configuration - before NRCS, Bozeman, MT Radial pasture configuration – after NRCS, Bozeman, MT Another pasture configuration - before Explanation Bare Buildings Fences Lawn Property Streams Trees Water Weeds Another pasture configuration - after Explanation Bare Buildings Fences Lawn Property Streams Trees Water Weeds Fencing, Watering and Frost Seeding Consider the New Fencing Technology Be flexible with Fencing Useful Life of Fencing Materials Material Life (yrs.) Maintenance Wood Post and Rail V-Mesh wire Barbless wire High tensile wire Plastic fence PVC 15-20+ 15-20 20-30 15 20-30 12 20-30 High Low – Medium Low Medium Low Low Low Fencing • One of the largest expenses in Grazing • Many different options but some rules apply – Have secure perimeter fence – Use temporary or portable fence in cells – Use the lay of the land to your advantage – Be flexible in cell sizing Cost of Fencing • Cost of quarter mile of fence – 48” woven wire, one barb-----------$1.07/foot – 5 barbed wire fence------------------$0.83/foot – High tensile 8 strand 12.5 gauge---$0.76/foot – High tensile 5 strand electric(12.5)$0.57/foot – Polywire fence(interior use only)--$0.03/foot Iowa State University Shape effect on Fencing Requirements 744 feet 836 feet 1007 feet Length=2 X Width 888 feet 951 feet Length=4 X width 1,040 feet Water FROST SEEDING Adding new seed to a pasture by broadcasting on frozen ground in early spring, letting frost & snow incorporate the seed. Frost Seeding in Snow This practice is promoted because it’s easy to determine seed placement. Be cautioned that this practice could also increase the risk of seed movement as the snow melts. Snow Tracks Help Seed Melts into Snow FROST SEEDING • Improves Pasture Quality & Yield • Lower Cost Than Annual Nitrogen Application ($9 vs. $42) • Works Best On Loams & Clay Soils or Fields With Natural Moisture • Clovers Recommended, Birdsfoot Trefoil & Certain Grasses Can Work FROST SEEDING • Use Improved Varieties i.e. Clovers Like Arlington, Cimmeron, or Marathon and High Yielding Trefoils Like Norcen • Graze Tight In The Fall • Broadcast Inoculated Seed Approx. 45 Days Before Grass Growth Begins FROST SEEDING • Broadcast 6 - 10 # of Red Clover; 8 - 12# of Trefoil; or 2 - 4 # of White Clover /acre • Don’t Mix Clover & Trefoil • For Insurance Apply 40# / Acre of Actual Phosphorus (90# / Acre of 0-46-0 ) • Lime or Potassium May Be Needed - Soil Test To Determine - Don’t Apply Nitrogen! Grazing Tips Management is our most important input for productivity C. Bradley Management makes the difference between this… Successful Pasture Management And this… Grazing Streamside Pastures Stockpile Forages • Let forage accumulate 70-75 days before a normal killing frost • At 2 acres per cow expect 40-60 days of stockpiled forage • The goal should be to provide the greatest amount of leaf material • Growing or Lactating animals may need more Steps to effective grazing management • Graze to the desired stubble height (take half, leave half-grazing rule of thumb) • Allow adequate rest periods for grass regrowth • Don’t regraze a pasture until your key species has reached the desired height • Avoid over or under grazing Steps to effective grazing management • Apply fertilizer as needed (take a soil test) • Re-seed pastures if necessary • Control weeds and undesirable plants in pastures and adjacent areas • Divide or subdivide grazing areas into smaller blocks, where feasible Grazing Management Tips • Commit Yourself Totally To Making It Work • Make The Transition Gradually • Solicit A Lot Of Advice, But Make Your Own Decisions • Stay Flexible And Keep Investments Low Grazing Management Tips • Set reasonable goals • Plan, monitor and modify plans to meet your objectives • Be observant – walk your property and look • Keep records – written and photographic http://www.uwex.edu/ces/crops/teamforage/index.html http://www.uwex.edu/ces/cwas/ Central Wisconsin Agricultural Specialization Portage Wood Waushara Juneau Green Lake Adams Marquette