Aerial seeding cover crop questions have been numerous this month. Indeed, the wet month of August does greatly increase the probability that aerial seeding will be successful as we enter September.

Dicamba, Liberty and atrazine are the most effective options for controlling marestail post-emergence in corn, and atrazine alone may not kill larger plants.

Controlling marestail in soybeans has been a big challenge for Kansas no-till producers in recent years.

Marestail, also known as horseweed, competes with soybeans throughout the growing season, reducing crop yields. In a 2010 Ohio State University study, soybeans yielded 51 bushels per acre when burndown treatment failed to control emerged plants; 57 bushels per acre when the burndown was effective, but there was no residual herbicide; and 65 bushels per acre when the burndown was effective and effective residual herbicides were used.

This is essentially a repeat of an article that ran last year at this time.

Mark Loux of Ohio State Univeristy presents soybean burndown options for control of marestail.

The months between this year’s harvest and next spring’s planting are prime time for winter annual weeds to take over fields.

With the recent stretch of nice fall weather, we continue to get questions about control of certain winter annual weeds, namely common chickweed and horseweed/marestail.