There will be lots to discuss at the upcoming annual university of Minnesota Agronomy Field Tour in Waseca, Thursday, June 21.
As the 2011 harvest came to a close, soil conditions were dry and winter began without a normal fall recharge of soil moisture. After a mild and relatively snowless winter, an optimal start to spring planting came early followed by good spring rains.
Jeff Coulter, UM Extension agronomist will look at the status of the current corn crop and discuss how management factors influenced early crop growth this season and how it may relate to yield impacts. The mild winter may also have an effect on insect populations. Ken Ostlie, UM Extension entomologist will discuss insect population dynamics that may be observed this growing season.
University researchers will address issues in corn and soybean weed management, along with aspects of soybean management and continuous corn production. Tom Hoverstad, scientist at the UM Southern Research and Outreach Center, will show how various products are performing this spring on weeds in corn and soybeans. The emphasis will be on rates and products used for controlling specific weeds giving farmers an option instead of relying on glyphosate as their only means of weed control in corn and soybean.
Seth Naeve, UM Extension agronomist, will discuss many aspects of soybean management. Naeve will elaborate on row spacing, planting date, drainage and yield enhancing products and how university research is trying to address all these factors to help decisions about what factors may be best for specific cropping systems.
Continuous corn production using conservation tillage often results in less uniform and smaller early season growth along with lower grain yields and profitability. This is especially true on cool poorly drained soils. In this presentation, Jeff Vetsch, SROC assistant scientist, will discuss the effects of fluid starter fertilizer combinations and placement of 10-34-0, 28-0-0, and 12-0-0-26 (ammonium thiosulfate) on corn production in reduced tillage/high-residue conditions.
Addition of nitrogen fertilizers or manures to soil results in emissions of nitrous oxide gas to the atmosphere. Levels of N2O in the atmosphere have increased by nearly 20% since 1850. N2O is a potent greenhouse gas that is 300 times more efficient in absorbing heat compared with carbon dioxide; and N2O contributes to destruction of the ozone layer and thereby allows more ultraviolet radiation to penetrate to the earth's surface. Rod Venterea, soil scientist, USDA-ARS Soil & Water Management Research Unit will provide some background on the importance of agriculture as a source of N2O emissions, and summarize results of research examining how fertilizer management practices including source and application method can effect the magnitude of N2O emissions.
The field tour will be held Thursday, June 21 at the SROC. Registration opens at 8 a.m., and a shotgun start sends the tours to the field promptly at 8:30.
Lunch (with time for Q&A) brings the event to a close shortly after 12 p.m.
The $35 registration fee includes handout materials, morning refreshments and lunch. CEUs for certified crop advisers are available. The field tour will be held rain or shine, and, in the event of inclement weather, will be held in the administration building at the Southern Research and Outreach Center. The Center is located at the west edge of Waseca on Highway 14, across from Loon Lake.
For more information, visit the SROC Web site at http://sroc.cfans.umn.edu or call 507-835-3620.