Biomass shifts and suppresses weed populations under CA. Michael MulvaneyPresentation Transcript
Biomass shifts and suppresses weed populations under conservation agriculture Michael J. Mulvaney, Virginia Tech, USA C. Wes Wood, Auburn University, USA Andrew J. Price, USDA ARS National Soil Dynamics Lab, USA SANREM CRSP is made possible by the United States Agency for International Development and the generous support of the American people through USAID Cooperative Agreement No. EPP-A-00-04-00013-00.
Conclusions• Forage soybean does not effectively suppress weeds• Broadleaf and sedge control – suppressed under high biomass CA after 1st yr• Grass control – variable, increases in 2nd yr• Population shifts from broadleaves and sedges toward grasses• Conversion from fallow to CA increased SOC• Yield not affected by mulching or forage soybean