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Showing posts from June, 2015

Postemergence Weed Control Strategies in Sugarbeet

Tom Peters, Extension Sugarbeet Agronomist, Univ of Minnesota / North Dakota State University

Sugarbeet are actively growing following ample precipitation the past three weeks and finally some sun and heat. Unfortunately for Farmers, so are the weeds. Farmers should be scouting their fields and preparing for postemergence weed control. With this in mind, I offer the following suggestions:

· Scout fields regularly. I suggest visiting fields at least every 7 days
· Properly identify weeds. Get help if you are unsure about weed identification
· Spray weeds when they are small, preferably less than 2 inches tall
· Use full rates of herbicides and the appropriate adjuvants depending on herbicide or herbicide mixtures
· Consider tank-mixes to provide multiple modes of action, especially on tough-to-control weeds
· Revisit fields for possible sequential herbicide applications

When is it too Windy to Spray?

by David Nicolai and Lizabeth Stahl, Extension educators - crops and Dr. Dean Herzfeld, Coordinator, Pesticide Safety and Environmental Education
The corn and soybean post-emergence crop protection application season is here. Corn and soybean growers will target post-emergence herbicide applications by the V4 growth stage in soybeans and the four leaf stage in corn to limit yield reductions due to weed competition. Targeting applications by these crop stages will also help ensure applications are made before weeds exceed three to four inches in height, which is the maximum height on many herbicide labels for most effective control.

As crops and weeds enter rapid growth stages, wet soil conditions due to recent rains have made it challenging to make timely herbicide applications. As growers rush to complete weed control operations, under very windy conditions, calls about injury resulting from herbicide drift are anticipated. Where fields of Roundup Ready crops are adjacent to non…