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Mid-Wood Inc. Agronomy News

Corn and Soybeans End of July

CORN ‘R’ STAGES AND MATURITY

  • Corn pollination is complete in most areas and has occurred with few problems.
  • Development of blister stage, and subsequent maturity stages, are marked by significant maturity benchmarks.
  • Continuation of favorable warm weather and adequate moisture promises speedy corn maturation.

SOYBEAN MATURITY AND YIELD

  • Warm weather and adequate moisture are favorable for soybean growth and maturity.
  • Mid-to-late soybean ‘R’ growth stages are summarized.
  • Watch for developing foliar disease and insect problems.

DIPLODIA (STENOCARPELLA) EAR ROT INFECTIONS APPEARING

  • We have received a few early reports of Diplodia infections in corn.
  • Diplodia (Stenocarpella) ear rot is favored by cloudy, moist weather for a period of a few weeks around silking.
  • Death of the ear leaf may signal presence of Diplodia infection.
  • Management of crop residue may reduce Diplodia infection levels.

SOYBEAN FUNGICIDE / INSECTICIDE APPLICATIONS

  • Lower crop prices are making the soybean insecticide and fungicide application decision more difficult this year.
  • The insecticide application decision can be complicated but should always be based on scouting of individual fields.
  • Total defoliation can probably be considered, even if caused by multiple insects.
  • Interaction of defoliating and sap feeding insects has not been studied.  Sap feeding insects should probably be considered individually.
  • Review the soybean foliar fungicide checklist to help make the application decision.

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