Palle Pedersen Assistant Professor and Soybean Extension Agronomist Iowa State University
Education   Ph.D. in Agronomy, University of Wisconsin-Madison  M.S. in Agricultural Science, The Royal Veterinary and Agr...
Seven Steps to High Yield Soybeans 1-Variety Selection 2-Manage SCN Early 3-Plant Early 4-Row Spacing 5-Manage Weeds Early...
1-Variety Selection Variety selection is the most important decision a producer makes to achieve high soybean yield . It i...
2-Manage SCN Early SCN appeared to be the greatest limiting factor of soybean yield in our research.   Rotate high-yieldin...
3-Plant Early The optimum time to plant soybeans in Iowa is April 25 for the southern two thirds of the state and May 1 fo...
4-Row Spacing Plant soybeans in rows less than 30-inch rows. Soybean rows need to close quickly to improve light intercept...
5-Manage Weeds Early Manage weeds early to promote early canopy development   Sensitive to early-season competition from w...
6-Weekly Scouting Weekly scouting is a must to help minimize the impact of any in-season stresses   Population densities o...
7-Fertility Test Tests should be conducted at least every other year to verify that appropriate fertility levels are maint...
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Palle Pederson

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This presentation is based on an interview with Palle Pederson conducted in Spring 2009

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Palle Pederson

  1. 1. Palle Pedersen Assistant Professor and Soybean Extension Agronomist Iowa State University
  2. 2. Education Ph.D. in Agronomy, University of Wisconsin-Madison M.S. in Agricultural Science, The Royal Veterinary and Agricultural University, Copenhagen, Denmark M.S. in Agricultural Economics, Wye College, University of London, England. B.S. in Agricultural Science, The Royal Veterinary and Agricultural University, Copenhagen, Denmark
  3. 3. Seven Steps to High Yield Soybeans 1-Variety Selection 2-Manage SCN Early 3-Plant Early 4-Row Spacing 5-Manage Weeds Early 6-Weekly Scouting 7-Fertility Test
  4. 4. 1-Variety Selection Variety selection is the most important decision a producer makes to achieve high soybean yield . It is not unusual for one variety to out-yield another by 15 to 20 bushels or more in the same field
  5. 5. 2-Manage SCN Early SCN appeared to be the greatest limiting factor of soybean yield in our research. Rotate high-yielding SCN resistant varieties with a non-host crop such as corn resistant varieties can also help minimize the impact of many pathogens such as sudden death syndrome, brown stem rot, iron deficiency chlorosis and Pythium
  6. 6. 3-Plant Early The optimum time to plant soybeans in Iowa is April 25 for the southern two thirds of the state and May 1 for the northern one third if the seedbed is satisfactory
  7. 7. 4-Row Spacing Plant soybeans in rows less than 30-inch rows. Soybean rows need to close quickly to improve light interception. Increased light interception is essential to promote rapid growth beginning at flowering.
  8. 8. 5-Manage Weeds Early Manage weeds early to promote early canopy development Sensitive to early-season competition from weeds, which reduce canopy development P re-emergence herbicide can minimize the risk of early-season weed competition
  9. 9. 6-Weekly Scouting Weekly scouting is a must to help minimize the impact of any in-season stresses Population densities of particular insects can be monitored carefully so they can be managed at economic thresholds Bean leaf beetles and soybean aphids are insects that should be monitored frequently
  10. 10. 7-Fertility Test Tests should be conducted at least every other year to verify that appropriate fertility levels are maintained The best time to sample soil is in the fall Consider taking soil samples to assess SCN population densities at the same time

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