Several soybean diseases have popped up over the past several weeks across Iowa. Some of the more common diseases found in our field scouting can be found in this report.
The planting date for wheat is important for discouraging Hessian fly. Read more about the biology of this pest and how to avoid crop injury.
With corn pollination complete and grain fill well underway, estimates of corn yield are being made across Iowa. Here, results are presented from a project using Hybrid-Maize to forecast yield potential at the end of the year.
This growing season corn rootworm numbers have been lower than the past several years. This article reviews current management tactics and offers guidelines for the 2015 season.
The annual fall field day for the Iowa State University Southeast Iowa Research Farm near Crawfordsville will be held September 9, 1:30 p.m.
Brown stem rot has recently been found in Iowa soybean fields. This disease can be confused with sudden death syndrome, so it is important to know what to look for when scouting fields.
Now is the easiest time to find new infestations of Palmer amaranth and initiate programs to either eradicate or limit its spread. We appreciate being informed of new Palmer amaranth infestations and are willing to aid in identifying suspect plants.
Soybean aphids are becoming more abundant in fields this week. Scout soybean now to make timely treatment decisions.
Show the world how well you know your weeds!
With corn pollination underway and in some case near completion many agronomists and farmers are now beginning to think about what corn yields will be. Here, results are presented from project using Hybrid-Maize to forecast yield potential at the end of the year.
Crop Advisors can earn continuing education credits for CCA certification through in-person and online attendance of the Resilient Agriculture Conference, August 5-7, in Ames, Iowa.
Iowa State University Extension and Outreach, in partnership with national precision ag leaders and Meister Media, will hold an Ag Big Data conference on August 25, 2014 on the ISU campus.
The Iowa N response database in the Corn Nitrogen Rate Calculator was recently updated. There are now 246 trials for corn following soybean and 133 trials for corn following corn.
Parts of rural Iowa are abuzz about fungicide use to manage some emerging diseases.
Mid-season soybean samples can be sent to the ISU Plant and Insect Diagnostic Clinic for evaluation.
Northern corn leaf blight (NCLB) has been reported in numerous fields in Iowa.
Grasshopper activity has been noted this week in Iowa. These insects feed on grasses and weeds, and can become field crops pests.
Sprayers around the state are poised for post-emergence herbicide application as soil dries in soybean fields and mid-season applications of fungicide and/or insecticide.
The principles that apply to managing large waterhemp in soybean can be applied to control of other weeds larger than specified herbicide labels.
Based on all the rainfall and wet soils this is shaping up to be a big year for fungicide applications, so just a few thoughts for guys “on the fence” and trying to decide whether to spray or not.
Storm damage to both corn and soybean crops range from extensive defoliation to root lodging. In the coming week or two, damaged crops should be assessed to determine extent of damage.
Similar to last year, this year’s rain is triggering an increase risk in sudden death syndrome (SDS) developing. Unlike last year, most of the soybean crop was planted before the bulk of the rains started which further increases the risk of SDS.
White mold development is favored by cool, cloudy, wet, humid weather at flowering. The disease is more problematic in soybeans in high-yield environments where high plant populations, narrow row spacing, and an early-closing canopy are commonly used.
Extended periods of rainfall, flooding, hail, or all of the above have producers scrambling for replant or prevented planting options for forage and cover crops.
This spring's wet conditions are similar to those in 2011. That year's example could help producers this year avoid nitrate loss in fields that are saturated or have standing water.
Japanese beetles should be active in some areas of southeastern and southwestern Iowa this week, and adults are expected to emerge in central and northern Iowa in 7-14 days if warm temperatures continue.
A June 26 field day tour at the Southeast Research and Demonstration Farm offers an opportunity to learn more about soil and water, crop and pest management while earning CCA credit.
Understanding pathogens such as oomycetes that affect crops is key to managing disease and reducing losses.
The soybean cyst nematode (SCN) remains a serious cause of soybean yield loss in Iowa and the Midwest. Checking for swollen SCN females is an effective way to scout for the presence of this pest. SCN females recently have been found on soybean roots in southeast Iowa, indicating that now is a good time to start checking fields for the presence of SCN.
A upcoming weed science field day will cover tillage, conservation tillage and conventional tillage experiments, as well as new herbicides and application techniques.
Follow the latest happenings in Iowa crop production. Blog is hosted by Iowa Farmer Today in cooperation with Iowa State's Crops Extension and Outreach team.
Iowa State Mesonet and Ag Weather facts
Field Extension Education Laboratory 2014 Educational Programs
Research and Demonstration Farm 2014 Field Day Schedule
Drought resources include crop market outlook and water storage for crops and livestock production.
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Last Updated 8/21/2014