The switch to Roundup Ready® sugarbeet varieties will be over 90% in 2010. Many have questioned if there is a need to change agronomic practices when planting Roundup Ready® varieties. Frequently asked questions have been 1) how much N fertilizer do they need 2) what seed spacing is best 3) are they more susceptible to diseases? The general consensus from researchers across the nation is beets are beets no changes needed.
Dr. Larry Smith conducted a trial to evaluate N requirements of Roundup Ready® varieties in 2009. His conclusion was that there was no difference in N response compared to past research with conventional varieties.
Will stale seedbed planting, that's planting without any spring tillage work in the RRV? Many factors will dictate if stale seedbed planting can be successful or not. Some of these factors include:
|Tillage Treatment||Yield (T/A)||Sugar (%)||Beet/100' June 16||RSA (lbs)||RST (lbs)||Rev/A ($)|
|Stale - No Residue Mgrs.||38.3||14.6||171||10,140||265||1,033|
|Stale with Residue Mgrs.||37.4||14.9||176||10,084||270||1,056|
Michigan sugarbeet growers planted a total of 40,000 acres into stale seedbeds in 2009. That was about 35% of their acreage.
Match variety to field. Be sure variety disease characteristics match disease pressure in each field in 2010. Ask your agriculturist for a variety comparison chart they have available.