2005 Michigan Grower Survey Results

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2005 Michigan Grower Survey Results

• Soybean 2010 Committee

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Background

• 5 year average soybean yield for MI is 35 bu/acre
• Responses split into two groups
• Above average producers (35 bu/a or higher)
• Below average producers (34 bu/a or lower)

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Do you use soil tests to determine fertilizer
application rates?
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Have you used lime in the past 5 years?

• Above 86
• Below 66

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Percentage of producers that use MSU soybean
variety trial info

• Above 48
• Below 35

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Row Spacing
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Do you calibrate using seeds/acre?

• Above 67 yes
• Below 53 yes

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Average seeds/acre 183,830

• In general, average planting population and speed
  were very similar between above and below average
  producers.

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Do you scout your fields on a regular basis?

• Above 78 yes
• Below 67 yes
• Professional crop scouts are used by 29 in both
  groups

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Do you use insecticides or fungicides?
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Glyphosate Tolerant

• What percent of producers use?
• High vs. low producers
• Percent of total soybean acres
• High vs. low producers

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Weed Control

• Nearly 30 of respondents control weeds after
  they are more than 4 inches tall

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Stand Emergence

• High producing field
• Uniform 220 (86)
• Variable 37 (14)

• Low producing field
• Uniform 125 (52)
• Variable 116 (48)

What is causing poor emergence in some fields and
not others?
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Soybeans high value to cropping system?

• Above 66
• Below 54

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Yield Trend over past 5 years
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Top 5 Factors Influencing Yield

• Above
• Herbicide effectiveness/failure
• Weed pressure
• Soil type
• Planting date
• Insect damage

• Below
• Planting date
• ? soybeans in rotation
• Weed pressure
• Herbicide effectiveness/failure
• White mold