Scout Now For Pests

A wet spring and late planting could lead to additional pest challenges early in the growing season. Growers should begin scouting for insects early and take measures to protect their crops, say insect control experts from Pioneer Hi-Bred, a DuPont business.

Begin monitoring fields as soon as the crop emerges, says Paula Davis, Pioneer senior manager for insect and disease traits. Scouting for armyworms, black cutworms, white grubs, and wireworms is vital since they typically can surface in early growing stages of the corn crop.

This is a critical period during the growing season," says Davis. "Growers need to monitor their corn crop, looking at specific indicators, then follow a management plan to resolve any issues.

• This year, high flights of armyworm moths have been reported in Tennessee, Kentucky, and southern parts of Ohio, Illinois, and Indiana. Moths prefer to lay eggs in grassy areas. No-till fields, small grains, and pastures are considered high-pressure locations for monitoring. Small armyworms may stay and feed on grassy foliage, but as the pests grow, larger armyworms have the ability to migrate and may pose a threat to nearby or adjacent cornfields, especially no-till fields..

If growers notice chewing of leaves and multiple larvae per plant, use an insecticide treatment. Recommendations may vary for each state, but generally, if 50 percent to 75 percent of the plants have signs of armyworm feeding, further action should be considered.

• Wireworms tend to thrive in extended periods of cool, wet conditions. The main indicator of wireworm is stand reduction. The good news is that many growers already have protection in place through insecticide seed treatment. However, if there is heavy infestation, consider an insecticide or high-rate insecticide seed treatment next year.

• Small black cutworms will show small shot holes in corn leaves. Once black cutworms reach the fourth instar, approximately one-half inch long, they can cut the plant, resulting in stand loss or irregular stands. Corn hybrids with Herculex I technology have very good protection against black cutworms.

The suggested threshold for considering an insecticide treatment has lowered recently due to the high corn commodity prices. Consider using an insecticide treatment if 1 percent to 2 percent of plants are cut and larvae are present.

• White grubs feed on roots of seedlings. In problem areas, growers will see irregular stands since pruning takes place on the roots. While there isn’t much to remedy a heavily infested field, growers can develop a plan for the following growing season — looking at soil insecticide or investing in a higher rate of seed treatments.

Leave a Reply

Latest News
Crop Protection Products in storage
Crop InputsNewsweek: World Is ‘Awash In Glyphosate’
February 11, 2016
The world is awash in glyphosate, the active ingredient in the herbicide Roundup, produced by Monsanto. It has now become Read More
Crop InputsEPA: Let’s Talk Imidacloprid, Bees On February 18
February 11, 2016
EPA will hold an online technical briefing on its preliminary pollinator risk assessment for imidacloprid, a neonicotinoid insecticide, on Feb. Read More
ManagementThe latest on Syngenta-ChemChina Deal
February 11, 2016
Executive Editor Paul Schrimpf invites Jackie Pucci and Dave Frabotta from sister publication AgriBusiness Global to discuss the latest developments Read More
AdjuvantsUniversity of Illinois Confirms Adjuvant’s Perfor…
February 11, 2016
An independent University of Illinois study has shown that WETCIT adjuvant, now with TransPhloem technology, provides greater herbicide uptake and Read More
Crop InputsSyngenta’s Acuron Flexi Receives EPA Approval
February 11, 2016
Growers looking to control their toughest weeds with flexibility will have access to Acuron Flexi corn herbicide from Syngenta, now Read More
EquipmentAGCO Showcases White Planters 9800VE Series Planters AT…
February 11, 2016
AGCO unveiled the new White Planters 9800VE Series planter during the 2016 National Farm Machinery Show in Louisville, KY. The Read More
EquipmentCase Unveils 2000 Series Early Riser Planter At NFMS
February 10, 2016
Case IH revealed the all-new 2000 Series Early Riser planter to media and attendees at the opening of the National Read More
Syngenta Sign
Crop InputsSyngenta: Keep Ag In Mind During Election Season
February 10, 2016
As presidential candidates stake out their 2016 election platforms and key priorities, growers and their business partners should seek opportunities Read More
Crop InputsMarrone Bio Innovations Submits New Bio-Fungicide For E…
February 9, 2016
Marrone Bio Innovations, Inc. (MBI) today announced that it has submitted a new biological fungicide (MBI-110) to EPA. The broad spectrum Read More
Crop InputsWeed Expert: Adding A Second Herbicide Not Always Easy
February 9, 2016
In my last post, I reviewed some recent research that suggests one of the best ways to delay the evolution Read More
Crop InputsGenetic Literacy Project: Farmers Need More Herbicide C…
February 9, 2016
There are two things that I think just about every weed scientist can agree on, writes Andrew Kniss for The Read More
HerbicidesWeed Expert Warns North Dakota Growers Of Coming Herbic…
February 9, 2016
Ford Baldwin painted a bleak picture of weed control at a recent workshop here exploring the future of ag production, Read More
HerbicidesWSSA Announces New, Updated Free Web Resources
February 9, 2016
Today the Weed Science Society of American (WSSA) announced that new and updated educational materials for both weed scientists and Read More
Soybean field
FungicidesFour Arysta Fungicide Formulations Given FIFRA Approval…
February 8, 2016
Arysta LifeScience North America recently announced the issuance of Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) Section 2(ee) Recommendations for Read More
FungicidesAgri-Fos Systemic Fungicide Plus Receives EPA Registrat…
February 8, 2016
Vivid Life Sciences has announced the EPA registration of Agri-Fos Systemic Fungicide Plus, a highly concentrated active ingredient phosphite fungicide, Read More
Crop InputsBayer Contests EPA’s Decision On Valuable Insecticide F…
February 5, 2016
Crop Science, a division of Bayer, has announced it has refused a request by the Environmental Protection Agency (EPA) to Read More
Wheat Field North Dakota
Seed/BiotechSyngenta Wins Seed Fraud Suit Against South Dakota Grow…
February 5, 2016
Syngenta has obtained a $25,000 settlement from Paul and John Mayclin, Mayclin Farms, Plankinton, SD, in response to their Plant Read More
ManagementOABA Annual Conference Wraps Up In Columbus
February 5, 2016
More than 300 Ohio AgriBusiness Association (OABA) members and industry professionals were on hand to engage in collaborative learning and Read More