Late-planted Soybeans Mean Aphids In August

Because farmers across the Corn Belt planted crops later than normal this season, scouting for soybean aphids might seem later than normal, according to one Ohio State University Extension entomologist.

Even so, the aphids’ appearance is right on schedule, agronomically speaking.

“We’re just hitting the late R4, or early R5 stages of soybean development, and we now have soybean aphids building up in Northern Ohio,” said Ron Hammond, OSU Extension entomologist and professor in the Department of Entomology. “We’re seeing some fields sprayed for soybean aphids, which would normally be considered pretty late, but because of how late the beans are, this is actually the time we should see aphid activity.”

Hammond said the corn crop has reached the stage where insect damage is not as much of a concern, while soybeans are still very much susceptible – most notably from aphid feeding.

Extension researchers and educators recommend farmers consider spraying for soybean aphids when a field averages 250 aphids per plant. Hammond notes that figure is a field average, not merely a count of 250 aphids on any given plant in a field.

“This is the threshold for spraying,” he said, “but the population that really concerns us in terms of injury to the plant is 750 aphids per plant or above.”

He said the conservative insect count used in the recommendation is to insure fields do not experience actual economic injury to the crop.

In terms of pod-feeding insect injury, Hammond’s attention is also focused on the second generation of bean leaf beetles.

“The last of the second generation is starting to come out,” he said. “There are going to be so many soybean fields that are still green when the second generation comes out, they should really disperse themselves. That means we’ll either have very few fields at risk because we’ll see low concentrations of insects in any given field, or we’ll have a lot of fields at risk because the fields are staying green longer.”

The biggest advice Hammond offered to farmers is to continue scouting their fields as August wanes to keep abreast of aphid or bean leaf beetle feeding.
“Growers should scout their fields and take those insect counts so they can make good decisions,” he said. “Soybeans are later than normal, so they could be susceptible, and we need to keep on top of our scouting.”

(Source: Ag Answers)

Leave a Reply

Insecticides Stories

Soil Young Corn
InsecticidesAtticus Launches New Acetamiprid Alternative
January 3, 2017
Atticus recently announced the introduction of a line of products containing the active ingredient Acetamiprid, an insecticide that works quickly Read More
InsecticidesVestaron’s Bioinsecticide Spear-P Expects Commercial Availability In 2018
December 27, 2016
A new triple mode-of-action bioinsecticide from Vestaron Corp. called Spear-P offers an effective biological control solution for the Colorado Potato Read More
Corn
InsecticidesMajor Review Finds Neonic Poses Low Risk To Aquatic Invertebrates
November 28, 2016
A major new ecotoxicological review and risk assessment has been published in the peer-reviewed literature and concluded that registered crop Read More
Soybean Field
InsecticidesDow AgroSciences, U.S. Farmers Disagree With EPA Proposal To Revoke Chlorpyrifos Tolerances
November 11, 2016
In its release of a pre-publication copy of the Notice of Data Availability (NODA) related to its assessment of the Read More
Trending Articles
AgriSync
Matt Hopkins17 Agriculture Apps That Will Help You Farm Smarter In 2017
December 9, 2016
Ag professionals are working smarter, not harder, than ever before. Smart farming technologies have enabled them to reduce costs, maximize Read More
R4023 Sprayer, John Deere
CropLife 100Ag Retail Equipment Report: The Green Party Continues
December 7, 2016
In the annual race for sales in the ag retail equipment marketplace, the color schemes for participants are a little Read More
Mike Stern
Precision AgClimate Corp. CEO Talks Retailer Support For Digital Ag
December 1, 2016
CropLife Magazine’s sister publication, AgriBusiness Global, recently sat down with Mike Stern, CEO of The Climate Corp., following the Monsanto subsidiary’s Read More
Precision AgTrimble Debuts End-to-End FMIS Platform
November 28, 2016
October’s inaugural PrecisionAg Vision Conference left this author with many thoughts and things to ponder in the coming months. Probably Read More
CHS Primeland
CropLife 100The 2016 CropLife 100 Report: Reviewing The Many Bulls And Bears Impacting This Year’s Marketplace
November 28, 2016
For virtually all of 2016, the nation was wholly focused on the big Presidential election. Some folks aligned themselves with Read More
Monsanto sign
Crop InputsMissouri Governor Meets With Bayer CEO To Discuss Monsanto Merger
November 21, 2016
Missouri Gov. Jay Nixon visited Bayer AG global headquarters in Leverkusen, Germany, on November 18 to discuss the proposed Bayer-Monsanto Read More
Latest News
Young Corn Plants
ManagementTimac Agro USA Acquires Michigan Ag Retailer
January 20, 2017
Timac Agro USA, an agriculture supply company specializing in high-efficiency plant and animal nutrition products, has acquired St. Louis,MI-based A&E Ag, Read More
Soybean field
Crop InputsNufarm Teams Up With John Deere Financial
January 19, 2017
Nufarm and John Deere Financial have teamed up to help farmers grow a better tomorrow. This program helps make purchases Read More
Sonny Perdue
LegislationTrump Formally Picks Perdue As Agriculture Secretary
January 19, 2017
U.S. President-elect Donald Trump officially announced Sonny Perdue as his choice for secretary of agriculture on Thursday, selecting a former Read More
ManagementPresident Trump, Wisconsin Review, and a Dow-DuPont Upd…
January 18, 2017
Editors Paul Schrimpf and Eric Sfiligoj reflect on a new administration, a recent winter show, and crop protection company mergers. Read More
Industry NewsBayer, MS Technologies Get China Approval For Balance G…
January 18, 2017
MS Technologies and Bayer have received import approval from China for Balance GT soybeans. The new Balance GT Soybean Performance Read More
Werner Baumann, Bayer AG, and Hugh Grant, Monsanto
Industry NewsReport: Monsanto, Bayer CEOs Among Latest to Make Trump…
January 18, 2017
The chief executive officers of German chemical giant Bayer AG and U.S. seed behemoth Monsanto, Werner Baumann and Hugh Grant, Read More
Giant Ragweed
HerbicidesStudy: Focusing On Weed Seedbank Can Help Manage Herbic…
January 18, 2017
Researchers writing in the latest issue of the journal Weed Science provide important insights on the control of herbicide-resistant giant Read More
Management3 Financial Trends To Watch In Agriculture
January 17, 2017
I recently had the opportunity to attend a meeting of credit managers for Midwest ag supply and input companies, in part Read More
Andersons Retail Store
CropLife 100The Andersons To Close All Retail Stores; Shutdown Does…
January 16, 2017
In a stunning announcement to the Toledo area, The Andersons Inc. said on Sunday that it would close its two Read More
Trimble TMX-2050 In-Cab Display
Eric SfiligojPrecision To Lead Agriculture In 2017?
January 16, 2017
Another new year is upon us! And I’m certain I speak for many in the agricultural world when I say Read More
Corn
Eric SfiligojThe Mood From Madison? In A Holding Pattern
January 16, 2017
Last week, I had the chance to attend the annual Wisconsin AgriBusiness Classic show in Madison, WI. It’s been a Read More
Syngenta Sign
Crop InputsAccenture Helps Syngenta Transform Its Global Logistics
January 13, 2017
Syngenta, a leading agriculture company, has collaborated with Accenture to design and implement a new digital logistics operating model across Read More
Fall Creek Seth Harden The Nature Conservancy
StewardshipLocal Farmers’ Watershed Initiative: Continuous Improve…
January 13, 2017
The goal in the Big Pine Watershed Project is to more intentionally do what local farmers and responsible ag retailers Read More
HerbicidesEPA Expands Enlist Duo Herbicide Registration To 34 Sta…
January 13, 2017
The U.S. EPA has expanded the geography for application of Enlist Duo herbicide from 15 to 34 states. This means Read More
Olson Ag Enterprise
CropLife 100Wilbur-Ellis Acquires Nebraska Seed Retailer
January 13, 2017
Wilbur-Ellis’ Agribusiness, a recognized leader in precision agriculture technology and the distribution and marketing of plant protection, seed and nutritional Read More
ManagementDeere-Precision Planting Update and the Ag Secretary Wa…
January 12, 2017
Editors Paul Schrimpf and Eric Sfiligoj provide the latest on the court date for John Deere/Precision Planting and the quest Read More
Monsanto sign
Seed/BiotechMonsanto, NRGene Form Agreement For Big Data Genomic An…
January 12, 2017
Monsanto Co. and NRGene have announced that the companies have reached a non-exclusive, multi-year global licensing agreement on NRGene’s genome-analysis Read More
AGCO Custom applicator
SprayersAGCO, Asmark Institute To Offer Training For Beginning …
January 11, 2017
AGCO Corp. and the Asmark Institute are collaborating to offer a new training program dedicated to educating and developing custom Read More