Pasture Management - Animal Science - Lecture Slides, Slides of Biology

Download Pasture Management - Animal Science - Lecture Slides and more Slides Biology in PDF only on Docsity! Pasture Management ee ae • Establishing New Pastures • Varieties or Cultivars to use • Fertilization • Weed Control • Pest Control • Grazing Management • Prescribed Burning • Help Docsity.com What’s the best variety of forages for my farm? It depends on location and land type. Bermudagrass Coastal and Tifton 85 What component of my feeding program most limits animal production? Bahiagrass Tifton 9 Docsity.com Estimated Establishment Costs Per Acre Coastal Bermuda in South Georgia Area Lime 1 ton $24.00 Fertilizer N 80 lb 20.80 P 40 lb 8.00 K 60 lb 7.80 Herbicide 15.50 Sprigging 95.00 Machinery 10.81 Labor 7.02 Overhead 18.00 Total Establishment Costs $206.93 Cost will vary, depending on Bermuda variety and acres sprigged. Docsity.com Nutrient Removal by Selected Crops Nutrient Removal Crop Yield N P K ---------------------pounds-------------------- Bermudagrass hay 8 tons 400 70 300 Corn 120 bushels 115 47 32 Peanuts + vines 2 tons 240 39 185 Wheat grain 60 bushels 70 33 20 Wheat grain + straw 60 bushels 100 40 122 Ryegrass pasture 300 lb. beef 9 7 1 Bermuda pasture 200 lb. beef 6 5 1 Docsity.com Weed Control •Timeliness •Burning •Mowing •Spraying •Use selective herbicide Docsity.com Prescribed Burning Another effective management tool When to burn? • One week prior to green up of bermudagrass • Historical dates for last freeze • March 13 for south Georgia • March 30 for central Georgia Must contact county forest ranger Contact local or county public safety offices before burning near roads Docsity.com Prescribed Burning What are the benefits? • Eliminate thatch buildup • Thatch reduces light penetration, which inhibits young stolen growth • Keeps soil temp lower in the spring, which delays green up by 2 weeks • Thatch layer ties up nutrients • Thatch layer decreases water infiltration • Cleaner first cutting of hay Weed Control • destroys many annual seeds • destroys woody stemmed perennials (briars) Docsity.com Mowing • Temporary Fix • Labor Intensive • Costs……$8 to $10/acre • Two mowings per season needed • Only top growth eliminated, not entire plant • Regrowth occurs quickly • Forage grasses are mowed along with the weeds • Leaves a large portion of production on the ground • Lost forage is unavailable to livestock Docsity.com Spraying Use selective herbicide Contact chemical representative (rep) for recommendations Liability involved? What crops are your neighbors growing? Care should be taken; wind-drift etc Grazing restrictions? Docsity.com Selective Herbicides for Pastures Grazon P + D Plateau Docsity.com