The acreage planted to Roundup Ready® sugarbeets in 2009 will exceed 90%. Use of glyphosate resistant beets certainly makes many aspects of weed control in sugarbeets much easier. Delayed planting of all crops this spring will result in need to control weeds in all crops simultaneously increasing demands on grower's time. Many sugarbeet fields were not sprayed on time in 2008 resulting in yield loss due to crop competition.
|Weed Pressure||Recommended Timing|
|Light||2-4 leaf beets|
|Moderate||2 leaf beets|
|Heavy||Cotyledon - 2 leaf beets|
One rate of glyphosate does not fit all situations. Select rates based on a number of factors including the following considerations:
|Situation||Rate (4.5 lb/Gal Acid Equiv)|
|Small weeds, very favorable environment||22 oz/acre|
|Less favorable environment or larger weeds||28 oz/acre|
|Unfavorable environment, very large weeds, hard to control weed species, suspected tolerance to glyphosate||32 oz/acre|
Growers can legally use any generic glyphosate product labeled specifically for post emergence use on sugarbeets. If a generic glyphosate is used a grower will no longer qualify for Monsanto's reward program for other Roundup Ready® crops. Be sure to select generic rates carefully. The acid equivalent content can vary from 3.0 to 4.5 lb/gallon.
Dr. Jeff Stachler, NDSU/UM Sugarbeet Weed Specialist has identified the following generic products labeled for sugarbeet.
|3.0 Acid Equivalent||3.7 Lbs Acid Equivalent||4.5 Lbs Acid Equivalent|
|Alecto 41S Bucaneer
Genesis Extra II
Gly Star Original
Gly Star Plus
Grand Slam 4X5
Imitator Plus (MN only)
Mad Dog Plus
Meychem 41% Glyphosate
Nufarm Credit Extra
Wise Up Plus
Alecto 41 UL (MN only)
Strikeout UL (ND only)
Four Power Plus
Extra Credit 5
Duplikator 5.5 Plus (MN only)
If replanting occurs contact the seed dealer that supplied the original seed to properly handle any technology fee rebates that might be necessary.
Springtail and wireworm infestations have been identified in the RRV. Poncho Beta has proven effective in NDSU trials against these pests.