Nebraska COVER CROP Tuesday, Feb. 14, 2017 CONFERENCE at the Eastern Nebraska Research and Extension Center (located at the University s Agricultural Research and Development Center near Mead, Nebraska) The attached information was presented at the 2017 Nebraska Cover Crop Conference. Materials in this communication may be subject to copyright. Please contact the presenter/author of the materials for more information or for permission to reprint or reproduce content. Sponsored by: In partnership with: University of Nebraska Lincoln Institute of Agriculture and Natural Resources Extension is a Division of the Institute of Agriculture and Natural Resources at the University of Nebraska Lincoln cooperating with the Counties and the United States Department of Agriculture. University of Nebraska Lincoln Extension educational programs abide with the nondiscrimination policies of the University of Nebraska Lincoln and the United States Department of Agriculture.
Cover Crops: Residue, Nutrients, & Soil Biology Paul J. Jasa Extension Engineer University of Nebraska Cover crops and their benefits Erosion Control Nutrient Capture/Cycling Improve Soil Health Water Management Increase Biodiversity Balance C:N Ratio Nitrogen Fixation Reduce Compaction Weed Supression Provide Forage/Grazing? No-till Training and Education 1
Missouri River Bottoms Flooded 2011 Cover crops to stimulate soil life and provide residue Corn 2012 No Cover 75# Oats 40# Oats 40# Peas 210.8 bu/a 241.3 bu/a 244.5 bu/a John Wilson, Extension Educator, Burt County No-till Training and Education 2
Increase biological diversity Put wheat in the rotation Put forages in the rotation Use cover crops No-till Training and Education 3
Yield, bu/a Yield, bu/a 120 Nitrogen Rate Response Curve 2012 100 80 60 89 40 20 0 0 40 80 120 160 200 Nitrogen Rate, lbs/a 120 Cover Crop Treatments 2012 100 80 60 40 20 0 0 40 80 120 160 200 Nitrogen Rate, lbs/a No-till Training and Education 4
Cover Crop Yield, bu/a Cereal rye 103.6 Chickling vetch 101.8 Austrian winter peas 99.4 N Cocktail 93.1 Subterranean clover 91.2 Hairy vetch 89.7 Cowpeas 88.1 Soybeans 87.4 Crimson clover 86.3 No-till Training and Education 5
Yield, bu/a Yield, bu/a 300 Nitrogen Rate Response Curve 2015 250 200 150 201 100 50 0 0 50 100 150 200 250 300 350 Nitrogen Rate, lbs/a 300 Cover Crop Treatments 2015 250 200 150 100 50 0 0 50 100 150 200 250 300 350 Nitrogen Rate, lbs/a No-till Training and Education 6
Cover Crop Yield, bu/a Chickling vetch 225.6 Soybeans 218.0 Hairy vetch 217.8 N Cocktail 215.4 Cowpeas 211.1 Austrian winter peas 205.1 Cereal rye 203.3 Sunn Hemp 199.9 N Cocktail no N 139.0 No-till Training and Education 7
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2008 dryland corn Wheat stubble 166 Milo cover crop 175 Beans cover crop 179 Corn Yields, bu/a None Carbon Nitrogen 2012 76.5 76.8 74.1 2013 158.3 160.6 161.8 Rogers Memorial Farm No-till Training and Education 11
Corn Yields, bu/a None Carbon Nitrogen 2012 76.5 76.8 74.1 2013 158.3 160.6 161.8 2015 197.7 202.3 214.4 2016 195.5 178.2 199.5 Rogers Memorial Farm No-till Training and Education 12
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Flown on cover crop at time of seed corn male row destruction No-till Training and Education 17
Flown on cover crop already growing and protecting a sandy hillside at harvest time Use cover crops after low residue crops Use cover crops after corn silage or wheat Use cover crops on soils receiving more water than can be stored in the profile No-till Training and Education 18
CROPWATCH.UNL.EDU No-till Training and Education 19