Keys for Successful Weed Management in Corn and Soybean

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Presenters: Peter Sikkema

Credits: 0.5 PM

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Corn and soybean yield loss due to weed interference is variable and is primarily influenced by…

1 point

Weed density

The relative time of crop and weed emergence

Weed species

Soil nutrient status

Weather

In fields with high weed pressure, corn yield loss was ___ bu/ac/day.

1 point

0.2 bu/ac/day

0.7 bu/ac/day

1.2 bu/ac/day

1.7 bu/ac/day

2.2 bu/ac/day

The ideal soil-applied herbicide is field specific and is influenced by…

1 point

Weed species composition

Soil characteristics

Future crops in the rotation

All of the above

The amount of rain to activate a soil-applied herbicide is variable and is influenced by…

1 point

Weed species

Soil moisture conditions at the time of herbicide application

Soil texture and OM

Herbicide rate

All of the above

The addition of AMS to Liberty causes the greatest improvement in the control of…

1 point

Common ragweed and redroot pigweed

Wild mustard and green foxtail

Green foxtail and barnyardgrass

Wild mustard

Lambsquarters and velvetleaf

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