Cover crops, tillage and  soil quality   Dr. Joel Gruver WIU – Agriculture [email_address]
There are few profits in idiot-proof systems Using cover crops to capture multiple benefits  often requires more managemen...
20 years of similar tillage intensity and C inputs but contrasting types of organic inputs   Crop residues Cover Crops Ani...
•  Fast germination and emergence •  Competitiveness •  Tolerance to adverse climatic & soil conditions •  Ease of suppres...
Grazing  turnips, rape, radish ,  lentils , rye, oat, triticale, sorghum-sudan Reducing Compaction radish, canola, turnip ...
How will I seed the cover crop? What will soil temperature and moisture conditions be like? What weather extremes and fiel...
Managing cover crops profitably, 3 rd  edition
 
Terry Taylor’s continuous NT corn  w/ hairy vetch system
Red clover frost seeded into winter wheat.  Seed is broadcast onto frozen and cracked soil in mid-March after snow melt.  ...
How much N can frost seeded red clover fix ??
Hairy vetch can be successfully planted after wheat harvest. On the two occasions (out of 18 site-years of the WICST trial...
Cover crops can provide most of the nitrogen required by corn.    WI trials to determine whether supplemental nitrogen was...
Hunter Ethiopian cabbage Winfred Forage brassicas have good cover crop potential http://www.jennifermackenzie.co.uk/2005/1...
Compaction Solutions
Visual evidence of biodrilling Rapeseed root Canola root
Mustards can provide biomass and disease suppression.
Impact of cover crops on  soybean cyst nematodes Bare   Cereal Rye Ryegrass 1  7533 717* 117** 2  3650 320*   0** 3  1559 ...
Bare fallow Kaspar et al. J. Environ. Qual. 36:1503-1511
Alternative technologies  for timely cover crop establishment
DB Considerations How will I plant the cover crop? What will soil temperature and moisture conditions be like? What weathe...
If you grow small grains…. DB
An Aerial seeded annual ryegrass on John Hebert’s farm in IL DB
DB
Steve Nebel DB
Steve Nebel DB
Steve Nebel DB
Photo from Joe Nester DB
Farmers have been using aerial seeding to improve post-harvest grazing for a long time DB
Set-up for efficient aerial seeding in SE IA Steve Nebel DB
Don Birky’s seeder in Central IL  DB
Don and Matt Birky’s unique highboy with 10 feet and six inches of clearance could attract a crowd for its high-rising man...
Planting while harvesting DB
DB
Dwayne Beck’s set-up for planting while harvesting DB
DB
DB
DB
January
Terry Taylor planted radishes w/ hairy vetch, crimson clover and Austrian winter peas in fall 2010 DB
Bio-strip-till in VA DB
150-200 bu corn  with 0-20 lbs of N/ac  DB
 
An excellent stand of Tillage Radishes and ryegrass in Livingston County
A  grazing mix  using turnips and grasses
Upcoming SlideShare
Loading in …5
×

2011 tillage conference pp2

1,202 views

Published on

Published in: Technology
1 Comment
1 Like
Statistics
Notes
No Downloads
Views
Total views
1,202
On SlideShare
0
From Embeds
0
Number of Embeds
2
Actions
Shares
0
Downloads
34
Comments
1
Likes
1
Embeds 0
No embeds

No notes for slide

2011 tillage conference pp2

  1. 1. Cover crops, tillage and soil quality Dr. Joel Gruver WIU – Agriculture [email_address]
  2. 2. There are few profits in idiot-proof systems Using cover crops to capture multiple benefits often requires more management Cover crops are not idiot-proof!
  3. 3. 20 years of similar tillage intensity and C inputs but contrasting types of organic inputs Crop residues Cover Crops Animal manure Crop residues
  4. 4. • Fast germination and emergence • Competitiveness • Tolerance to adverse climatic & soil conditions • Ease of suppression/residue management • Fertility/soil quality benefits • Low-cost What to Look For in A Cover Crop
  5. 5. Grazing turnips, rape, radish , lentils , rye, oat, triticale, sorghum-sudan Reducing Compaction radish, canola, turnip (and hybrids) , sugarbeet, sunflower, sorghum-sudan, sweet clover, alfalfa N-fixation clovers, vetches, lentils, cowpeas, soybean, field pea, chickling vetch Residue Cycling canola, rape, radishes, turnips, mustards Nutrient Cycling sunflower, sugarbeets, brassicas , small grains http://www.sdnotill.com/Field_Facts_wheat_cover_crop.pdf Matching objectives with species ?
  6. 6. How will I seed the cover crop? What will soil temperature and moisture conditions be like? What weather extremes and field traffic must it tolerate? Will it winterkill in my area? Should it winterkill, to meet my goals? What kind of regrowth can I expect? How will I kill it and plant into it? Will I have the time to make this work? What’s my contingency plan—and risks—if the cover crop doesn’t establish or doesn’t die on schedule? Do I have the needed equipment and labor? Other key considerations Be realistic about potential cover crop challenges
  7. 7. Managing cover crops profitably, 3 rd edition
  8. 9. Terry Taylor’s continuous NT corn w/ hairy vetch system
  9. 10. Red clover frost seeded into winter wheat.  Seed is broadcast onto frozen and cracked soil in mid-March after snow melt.  Seedlings remain relatively small until wheat harvest, at which time they have full sunlight and three months to grow and fix atmospheric nitrogen.  Total nitrogen accumulation typically exceeds 100 lbs./a by the end of the growing season. 
  10. 11. How much N can frost seeded red clover fix ??
  11. 12. Hairy vetch can be successfully planted after wheat harvest. On the two occasions (out of 18 site-years of the WICST trial) when the red clover failed to establish well, the vetch produced an average of 115 lbs./a of nitrogen, providing an excellent “back-up plan” that reduces one of the potential risks of relying on a companion-seeded cover crop for nitrogen.  Late July vetch plantings can be riskier than frost seeding clover.
  12. 13. Cover crops can provide most of the nitrogen required by corn.  WI trials to determine whether supplemental nitrogen was worthwhile found that additional nitrogen (either starter or sidedressed) produced a significant yield increase only about one-fourth of the time.  The exceptions always occurred during years with cool springs, when there is a slow release of legume nitrogen. 
  13. 14. Hunter Ethiopian cabbage Winfred Forage brassicas have good cover crop potential http://www.jennifermackenzie.co.uk/2005/12/brassicas.html
  14. 15. Compaction Solutions
  15. 16. Visual evidence of biodrilling Rapeseed root Canola root
  16. 17. Mustards can provide biomass and disease suppression.
  17. 18. Impact of cover crops on soybean cyst nematodes Bare Cereal Rye Ryegrass 1 7533 717* 117** 2 3650 320* 0** 3 1559 722* 386* 4 1202 390* 279* 2 years /3 replications * Significant .05 ** Significant .01 _____________Egg count ______________ M Plumer Site
  18. 19. Bare fallow Kaspar et al. J. Environ. Qual. 36:1503-1511
  19. 20. Alternative technologies for timely cover crop establishment
  20. 21. DB Considerations How will I plant the cover crop? What will soil temperature and moisture conditions be like? What weather extremes and field traffic must it tolerate? Will it winterkill in my area? Should it winterkill, to meet my goals? What kind of regrowth can I expect? How will I kill it and plant into it? Will I have the time to make this work? What’s my contingency plan—and risks—if the cover crop doesn’t establish or doesn’t die on schedule? Do I have the needed equipment and labor?
  21. 22. If you grow small grains…. DB
  22. 23. An Aerial seeded annual ryegrass on John Hebert’s farm in IL DB
  23. 24. DB
  24. 25. Steve Nebel DB
  25. 26. Steve Nebel DB
  26. 27. Steve Nebel DB
  27. 28. Photo from Joe Nester DB
  28. 29. Farmers have been using aerial seeding to improve post-harvest grazing for a long time DB
  29. 30. Set-up for efficient aerial seeding in SE IA Steve Nebel DB
  30. 31. Don Birky’s seeder in Central IL DB
  31. 32. Don and Matt Birky’s unique highboy with 10 feet and six inches of clearance could attract a crowd for its high-rising maneuvers, but the father-son team created the special equipment for a tough job. The highboy, dubbed High Roller, was developed to air seed legumes and other cover crops into standing corn in August. The Birkys, who operate On Track Farming Inc. in rural Gibson City, put the highboy through its paces last week. DB
  32. 33. Planting while harvesting DB
  33. 34. DB
  34. 35. Dwayne Beck’s set-up for planting while harvesting DB
  35. 36. DB
  36. 37. DB
  37. 38. DB
  38. 39. January
  39. 40. Terry Taylor planted radishes w/ hairy vetch, crimson clover and Austrian winter peas in fall 2010 DB
  40. 41. Bio-strip-till in VA DB
  41. 42. 150-200 bu corn with 0-20 lbs of N/ac DB
  42. 44. An excellent stand of Tillage Radishes and ryegrass in Livingston County
  43. 45. A grazing mix using turnips and grasses

×