1 / 25

Livestock/Perennial grass/Row crops-a solution?

Livestock/Perennial grass/Row crops-a solution?. University of Florida, Auburn University, UGA, National Soil Dynamics Laboratory, National Peanut Laboratory, Virginia Tech, Texas A&M The Nature Conservancy, NRCS, Cotton Inc., NWF Water Mgt. District, NESPAL, and others.

mieko
Download Presentation

Livestock/Perennial grass/Row crops-a solution?

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Livestock/Perennial grass/Row crops-a solution? University of Florida, Auburn University, UGA, National Soil Dynamics Laboratory, National Peanut Laboratory, Virginia Tech, Texas A&M The Nature Conservancy, NRCS, Cotton Inc., NWF Water Mgt. District, NESPAL, and others

  2. We know that cultivation and tillage depletes organic matter and exposes the soil to erosion. Cover crops help but do they do enough?

  3. Sod-based Peanut-Cotton Rotation Sod System: (CBBP) Conventional System: (PCCP) oats Bahia oats Peanut oats Bahia Cotton oats oats Cotton Cotton Peanut Oat Winter Cover Crop Following Peanut and Cotton in Both Systems Strip till was used in each year with best management practices

  4. Cattle and perennial grasses add an intensity to cropping systems that brings better utilization of nutrients, water, land resources, and can be much better environmentally and economically

  5. Bahia killed in fall of 07 and planted to oat/rye Planting bahiagrass into winter cover in January 08 (early planting is key)

  6. Ct-P-Ct-P S-Ct-Ct-P Oat cover crop Oat cover crop O-O-Ct-P F-F-Ct-P Fescue Orchardgrass VT in 2006

  7. Virginia Tech at Tidewater REC 2006 YIELD!!! 50% higher yield 1801.3 1760.8 1343.7 1188.5 1210.4 1158.5

  8. Cotton Leaf Water Potential (2007)

  9. Peanut Leaf Water Potential in 2007 Sod-based peanuts had less water stress than the conventional peanuts most of the season under both irrigated and non-irrigated conditions.

  10. We know bahia grass increase peanut yields consistently Peanuts grown in soil without Bahia roots Peanuts grown in soil with Bahia roots Soil was from cultivated field with bahia roots added in pots in greenhouse

  11. Percent peanut yield averaged over 8 years, Quincy sod sod Conv. Conv.

  12. In bahia rotation

  13. Root limiting

  14. Nitrate-N in soil profile of sod-based rotation after Bahia & winter grazing and before peanut planting 2009, Marianna No bahia for 2 cycles, fertilized cover crops Nitrate is similar to OM content

  15. Potassium (K) in soil profile of sod-based rotation after Bahia & winter grazing and before peanut planting 2009, Marianna

  16. Nitrate-N in soil profile of sod-based rotation after Bahia-Peanut and winter grazing before Cotton 2009, Marianna Cattle recycling N

  17. July 8, 2009 0 N 60 lbs N/A on 6/8/09 PCCP More N uptake due to higher SOM and soil moisture content as well as deeper roots 0 N 60 lbs N/A on 6/8/09 BBCP

  18. Soil nitrates at 2 ft depth in cotton Little N left at end of the season due to higher uptake From suction cup lysimeters

  19. Potassium (K) in soil profile of sod-based rotation after Bahia-Peanut and winter grazing before Cotton 2009, Marianna

  20. High rainfall during harvest

  21. Comparison of a conventional and a sod based system Conventional system use land 125-155 days a year vs. year round with crops plus winter grazing which controls weeds after first crop and is intense Not less intense which is often the thought when going with bahiagrass Roots of row crops expand for the first 45-60 days before the plant goes into reproductive stage of growth vs. continuous growth for perennial grasses which leads to more soil exploration, nutrient and water utilization Nitrogen used on annual crops can be lost after crop maturity if a second crop is not planted vs. being used for 6-9 months by perennial grass or 6 months by a summer crop followed by 6 months for winter grazing Cattle recycle nutrients and if used at stocking rates of one animal per 1-2 acres can prevent leaching of nutrients and can reduce applied N, P, K, and other nutrients substantially Nutrient loss is highest with single annual crops using conventional tillage and is less with cover crops with conservation tillage and cattle, vs. even less with crops following bahiagrass with the least loss where cattle are part of the system perennial/annual crop system

  22. This rotation with perennial grass, livestock, annual row crops results in less irrigation needed, less N needed, less N leached, higher yields of winter grazing, peanuts and cotton, and 2-7 times more profit

More Related