Corn

Tar spot in corn, Tar spot is a foliar disease of corn caused by the fungus Phyllachora maydis. This disease has the potential to significantly impact yield.

What a droughty spring means for corn and soybeans. Andrew Kness shares his views on the pressing issue.

Agronomy News-April 2023, Volume 14, Issue 1. Topics in this issue are Nutrient Management Plan Writing Change, Bonus Cover Crop Program Seeking Collaborators, Survey of Italian Ryegrass, Wildlife Partnerships Seminar, USDA Organic Transition Assistance, Grain Market Report, What a Droughty Spring Means for Corn and Soybeans, Weather Outlook, and Regional Crop Reports.

Agronomy News-May 2023, Volume 14, Issue 2. Topics in this issue are Up and Down: Maryland Weather at its Finest, How’s That Burndown Looking?, Wet Cool Spring May Increase Slug Damage, Managing Fusarium Head Blight in Small Grains: Symptoms, Favorable Environments, and Disease Management Strategies, Maryland Weather Outlook, Maryland Regional Crop Reports, MDA Pesticide Container Recycling Program Ending, Don’t Forget to Take a Manure Test, Pythium Root Rot in Corn, USDA Still Accepting Census of Ag Responses From MD Producers, April 2023 Grain Market Update (information from USDA WASDE report), Managing and Scouting Fields for Fusarium Head Blight, New Web-Based Soybean Herbicide Tool, and Bt and Herbicide Tolerant Traits in Corn and Current Resistance of Target Insect Pests.

Listed below are the corn trait packages to make it easier to understand seed guides, sales material and bag tags. It is an abbreviated version of the Bt trait table plus related extension materials free online at: https://www.texasinsects.org/bt-corn-trait-table.html. Information listed Includes the name of each trait package, bag tag code, Bt toxins expressed (Cry1 types and Vip3A for caterpillars, Cry3 types for rootworms), refuge requirement (RIB=% refuge in the bag or REF=% structured refuge) and herbicide tolerance (GLY= glyphosate /Roundup-Ready, LL=glufosinate/Liberty Link, 2,4D or group 1 ‘fops’ type herbicides). Note that older trait packages, with limited or no commercial availability, are listed, so you can look back and interpret previous year’s planting records, seed guides, and research results.

Recently planted field crops may be at risk from slug damage due to the heavy rains and cooler temperatures we have experienced in the mid-Atlantic from the end of April into the beginning of May. Therefore, the UMD fact sheet “Managing Slugs in Field Crops Using IPM Principles” may be of interest.

Agronomy News-April 2023, Volume 14, Issue 1. Topics in this issue are Crop Budgets and Custom Farming Rates, Survey: Nitrogen Management, Forage Soybean Studies, New AgFS Educator, Hiring Nutrient Management Positions, Considerations for Burndown Programs in 2023, Grid Sampling to Improve Understanding of Soil Variability, Hughes Center Internship, Small Grain Disease Resources, Fusarium Head Blight Overview, Preparing for Tar Spot of Corn in 2023, Grain Market Report, Weather Outlook, and Regional Crop Reports.

Prices and cost estimates are averages collected from retailers across the state. Input prices will vary by region, sales volume, and other criteria and may not be reflective of your true cost. These prices can be used as a baseline for your operation. Make changes to prices to include your production techniques, inputs, and overall management.

Agronomy News-October 2022, Volume 13, Issue 7. Topics in this issue are Survey of the Most Common and Troublesome Weeds, Farm Emergency Action Plan, Preparing for 2023: Small Grains Disease Management, Maryland Accepting Proposals for 2023 Animal Waste Technology Fund, Scouting For Ear and Stalk Rots in Corn, Keep An Eye On Nitrogen Fertilizer Prices, Grain Market Report, Weather Outlook, and Regional Crop Reports.