From AgVenture's Seeds for Success Agronomy Update, November 2015
Whether its soil testing, SCN sampling or evaluating 2015 crop performance as it impacts 2016 seed selection options, your AgVenture Yield Specialist can help you develop a customized cropping plan for your acres. AgVenture provides its customers with comprehensive, year-round support through every phase of planning, planting and management of your operation’s profitability.
Seed Selection Considerations Disease patterns in 2015 were as inconsistent as the weather. AgVenture Product & Technology Manager, Scott Hart said, “Some unusual weather patterns created ideal environments for disease development for even the best prepared producers and their fields. Whether you had spotty incidences of disease or wide-spread occurrences, what we learned this season can help make sound decisions in selecting next year’s hybrids and varieties.”
2015 Corn Disease Pressures
Northern corn leaf blight (NCLB) first began appearing in late V10-VT stages and was only at low levels in scattered fields. However weather conditions prompted further, and in some cases, rapid development later in the season. Because it developed more fully late in the season, minimal yield losses were seen in most areas. But because NCLB tends to recur for several years, consider watching resistance selections for the year ahead.
Goss's wilt caused significant yield losses in some areas. Weather patterns favored development of Goss’s wilt. Given its ability to cause infection in subsequent years, growers may consider planting hybrids with high resistance where it was confirmed this year.
Root rots and crown rots ran their course killing plants in late reproductive stages in August for some growers. Again, growing conditions were ideal for fungal disease development. In some fields, the plant stopped developing well before plant maturity, causing ears to become infected with other diseases.
Stalk rots occurred where the accumulation of weather and other disease pressures challenged the crop.
2015 Soybean Disease Pressures
White mold occurred in widespread fields due to wet weather during flowering combined with cool summer temperatures. Research indicates soybean yields are reduced roughly 2-5 bushels per acre for each 10 percent increase in the incidence of the disease.
Sudden death syndrome (SDS) developed due to rainy and cool conditions. SDS resistant varieties performed much better under this year’s high pressures, and seed treatments proved effective in helping manage the disease.
AgVenture offers an outstanding line up of hybrids and varieties with genetic resistance to diseases. But resistance does not mean immunity. Crops with even the best disease ratings can still develop a disease where conditions create high pressure environments. Resistant hybrids and varieties may show milder infection rates than those less resistance. To make the best choice for next year, talk with your AgVenture Yield Specialist. Assessing this year’s diseases can help you make the best choice for 2016.