Source summary
What this podcast covered
Herbicide Carryover Insights
The episode discusses the implications of herbicide carryover, particularly focusing on clethodim and metribusin, which are critical for corn and grain sorghum planting. The recommended replant interval for clethodim is 30 days, depending on the formulation used, which can affect planting schedules.
Importance of Timely Applications
Timely herbicide applications are emphasized as crucial for effective weed control, especially in corn, where the first six weeks post-emergence are critical for yield protection. Delays in application can lead to significant weed competition, impacting overall crop performance.
Metribusin Research Findings
Recent research indicates that planting grain sorghum after metribusin application may be feasible with minimal injury, challenging previous assumptions about its carryover effects. This finding is particularly relevant as grain sorghum acres are expected to increase in Arkansas.
Key takeaways
5 things worth knowing
- 01
Clethodim has a 30-day replant interval for corn and grain sorghum.
- 02
Metribusin carryover may allow for planting grain sorghum with minimal injury if applied correctly.
- 03
Timely herbicide applications are crucial for effective weed control in corn.
- 04
Corn is easier to manage for weed control compared to other crops, but timing is key.
- 05
Research indicates that effective weed management can prevent pigweed from going to seed after harvest.
Source figures at a glance
At a glance
What the podcast covered, in 3 signals
Weeds
Critical timing
Herbicide application
Timely applications are essential for effective weed control.
Herbicides
Carryover concerns
Clethodim and metribusin
Understanding carryover impacts planting decisions.
Crops
Yield protection
Corn and grain sorghum
Effective weed management secures higher yields.
Questions & answers
Quick answers
What is the replant interval for clethodim herbicide?
The replant interval for clethodim is 30 days for both corn and grain sorghum.
Can I plant grain sorghum after using metribusin?
Yes, recent research suggests that planting grain sorghum after metribusin application may be possible with minimal injury.
Why is timely herbicide application important?
Timely herbicide applications are crucial to prevent weed competition during the critical early growth stages of corn.
What are the main weeds affecting corn in Arkansas?
Pigweed is a significant weed concern for corn production in Arkansas.