Cold Stress in corn and soybeans can impact growth – learn what signs to look for and when to consider replanting after frost.

In this PCT Shorts episode, Jonah Johnson, PCT | Sunrise Sales Agronomist, explains how early May cold temperatures and frost can affect corn and soybean crops. He discusses what happens when corn struggles to emerge or experiences above-ground damage, and why growers should wait several days before making replant decisions.

Jonah also dives into soybean resilience, explaining how cold water uptake, frost exposure, and emergence stage impact plant survival. He highlights key differences driven by soybean varieties, planting dates, and field conditions such as no-till, tilled ground, and cover crop residue.

Finally, he emphasizes the importance of stand counts and field scouting to determine whether replanting is necessary as weather conditions stabilize.

Topics covered:

• How cold stress affects corn emergence and when replanting may be necessary
• Why some corn fields may recover with time
• Key differences in how soybeans respond to cold conditions
• The impact of residue, no-till, and cover crops on frost damage
• What to look for in soybean regrowth (including the apical meristem)
• Why stand counts and field scouting are critical after a cold event

With fluctuating temperatures and frost concerns, now is the time to evaluate your crops and make informed decisions before replant windows close.

Reach out to your PCT Team or Sunrise Cooperative ASA for more agronomic insights and updates.