Top Pest Threats To Soybean Production

University of Illinois researchers identified the top pathogens, pests and weeds affecting soybean production in a recent article in Food Security. Soybean aphid, soybean rust, soybean cyst nematode, Sclerotina stem rot and the exotic pathogen, red leaf blotch, were featured as some of the top biotic constraints that may affect soybean production now and in the future.

“Enormous potential exists to increase future soybean production,” said Glen Hartman, U of I professor of crop sciences and USDA-ARS research scientist. “Genetic resources, used through both traditional breeding and bioengineering, may provide the solutions needed to combat current and future disease problems.”

As soybean production has increased over the past 50 years, so has the intensity of biotic constraints that ultimately threaten yield.

“Where soybean is grown every year or even every other year, pathogens often have increased in density to cause economic losses in yield,” Hartman said. “Parasitic microorganisms, including bacteria, fungi, nematodes, Oomycetes, and viruses all contribute to economic damage. A similar story occurs for pests; many, such as aphids, beetles, mites, and stinkbugs, cause considerable economic damage to the soybean crop.”

Although aphids, rust, nematode and Sclerotina stem rot are commonly known and recognized by soybean growers, less information is known on red leaf blotch, an exotic disease caused by the fungal pathogen Phoma glycinicola, he said.

“The fungus that causes red leaf blotch is listed on the USDA Agricultural Select Agent List — the same list as anthrax,” Hartman said. “So far, this disease has only been reported in Africa. However, if red leaf blotch is found in the United States, a recovery plan through the USDA-APHIS program has been developed that outlines a course of action to prevent it from spreading.”

Red leaf blotch symptoms include lesions on foliage, petioles, pods and stems. The fungus does not appear to be seedborne, but may be transported along with soil and other debris in grain. Yield losses of up to 50 percent were documented in Zambia and Zimbabwe in the 1980s.

“We don’t want to scare people because this disease has not been found in the United States,” Hartman said. “But we do want growers to be aware of it because they are typically the ones to find new pathogens, pests and weeds in their fields. Our goal is to build awareness among crop specialists and producers so we can stay ahead of it.”

Hartman said more research is needed to develop molecular diagnostic techniques to identify this pathogen from other common foliar soybean pathogens, to provide better information on fungicide chemistry and application timing, to develop varietal resistance and gather more data to develop predictive models for potential containment and management.

To successfully reduce losses due to pathogens and pests, a number of practices used alone or in combination may be needed; these include cultural and seed sanitation techniques, pesticide applications, and deployment of soybean cultivars with resistance.

“Biosecurity of food crops is important because we don’t want to suffer food shortages — whether it’s due to natural disasters or pathogens and pests that we can sometimes control,” Hartman said. “If you are talking about food and crop improvement, you are always talking about reducing diseases and pests.”

(Source: Illinois Ag Connection)

Leave a Reply

Fungicides Stories

FungicidesSyngenta Launches New Seed Treatment Fungicide
May 22, 2017
Syngenta has announced the launch of PLENARIS seed treatment fungicide for the control of downy mildew in sunflower. PLENARIS contains Read More
Winter Wheat
FungicidesREGALIA Rx Available from Koch Agronomic Services for 2017 Crops
May 8, 2017
Koch Agronomic Services, LLC has announced that REGALIA Rx biofungicide is available for U.S. corn, wheat and soybean growers who Read More
Crop InputsBioSafe Systems Introduces PerCarb Broad-Spectrum Bactericide / Fungicide
April 26, 2017
BioSafe Systems announces PerCarb (Sodium Carbonate Peroxyhydrate), a new alternative to potassium bicarbonate and lime sulfur products for use in Read More
Lygus pratensis
Crop InputsCalifornia Agriculture: What A Difference A Year Makes For Insect And Disease Control
April 3, 2017
“We finally got the rain,” David Haviland, Entomology and Pest Management Farm Advisor with the University of California Cooperative Extension, Read More
Trending Articles
Migrant farm workers
LegislationTrump: Immigration Crackdown Won’t Impact U.S. Agriculture
May 16, 2017
President Donald Trump said he would seek to keep his tough immigration enforcement policies from harming the U.S. farm industry Read More
AGCO Ratliff featured
Eric SfiligojRemembering Robert Ratliff
May 15, 2017
With all the fast-paced happenings in agriculture this spring, with multiple mergers in the works and planting season in full Read More
Case sprayer nozzle closeup
EquipmentSpray Application: A Nozzle Renaissance
May 2, 2017
If you had asked four-decade ag veteran Mark Bartel, President of Wilger Inc., just a few years ago what lay Read More
ManagementWashington Update, Dow-DuPont Earnings, and the Passing of an AGCO Legend
April 27, 2017
Editors Paul Schrimpf and Eric Sfiligoj talk about the latest Beltway news, crop protection company 1st quarter numbers, and the Read More
Crop InputsFlying Under the Radar No More, FMC Goes Big
April 13, 2017
Describing FMC as “under the radar,” admittedly, is probably a stretch. But in a snap of the fingers, FMC upped Read More
Young Corn Plants
Crop NutritionStill Hunting Yields
April 1, 2017
There’s no denying it — the agricultural marketplace today is undergoing a fundamental shift in fortunes. Not too many years Read More
Latest News
ManagementTrip Report, PSM R.I.P, and Ag’s Reaction to Federal Bu…
May 25, 2017
Editors Paul Schrimpf and Eric Sfiligoj talk about their recent travels, the end for Process Safety Management (PSM), and how Read More
Corn soil
LegislationARA Member Testifies Before Senate Ag Committee
May 25, 2017
Agricultural retailers stand on the front-lines of the American economy. As trusted advisors to America’s farmers, ag retailers are uniquely Read More
Young corn plants in soil
Crop InputsFortenza Insecticide Seed Treatment Receives EPA Regist…
May 25, 2017
Fortenza seed treatment insecticide from Syngenta has received registration approval from the U.S. EPA for use on corn and cotton Read More
ManagementFarm Market iD’s Agriculture Database Now Covers More T…
May 25, 2017
Farm Market iD, farmmarketid.com, has announced the release of its 2017 Annual Update of its farm and land database. The Read More
Food IT Fork-to-Farm
Precision AgThe Mixing Bowl Event Connects Technology, Food, and Ag…
May 24, 2017
For the fourth consecutive year, The Mixing Bowl presents FOOD IT, under the theme “Fork to Farm.” Action-oriented entrepreneurs, industry Read More
Photo credit: The United Soybean Board/The Soybean Checkoff.
Seed/BiotechKansas State University Researchers Find New Pathogens …
May 24, 2017
A single seed seems so simple. Put it in the ground, give it some care, and you’ve soon grown food. Read More
Soybean Field
HerbicidesNew Dicamba Herbicide Premix Coming Soon from Syngenta
May 24, 2017
Syngenta has announced the name of its new herbicide featuring the active ingredients of S-metolachlor and dicamba. Upon registration by Read More
Eric SfiligojMonsanto ‘Picks Its Battles’ by Nixing Deere Deal
May 23, 2017
Having been in the trade journalism game since the mid-1980s, I remember several watershed moments during my career. One of Read More
FungicidesSyngenta Launches New Seed Treatment Fungicide
May 22, 2017
Syngenta has announced the launch of PLENARIS seed treatment fungicide for the control of downy mildew in sunflower. PLENARIS contains Read More
Corn close up
Crop InputsMonsanto’s First HPPD Herbicide Garners EPA Appro…
May 19, 2017
Monsanto announced today that EPA has federally approved Harness MAX Herbicide, the first herbicide in the Monsanto portfolio to provide Read More
ManagementPrecision Planting Deal, China Developments, and Enviro…
May 18, 2017
Editors Eric Sfiligoj and Dan Jacobs discuss the latest news on John Deere’s now dead deal for Precision Planting, China’s Read More
Soybean aphid leaf
InsecticidesMulti-state Research Reveals IPM Best Option for Treatm…
May 17, 2017
About 89.5 million acres of soybeans will be planted across the U.S. in 2017 — a record high, according to Read More
GROWMARK-2017-Interns
CropLife 100GROWMARK Names 2017 Summer Interns
May 16, 2017
Forty-two college students are exploring agricultural career opportunities this summer as GROWMARK interns. They are working at FS member cooperatives Read More
Migrant farm workers
LegislationTrump: Immigration Crackdown Won’t Impact U.S. Ag…
May 16, 2017
President Donald Trump said he would seek to keep his tough immigration enforcement policies from harming the U.S. farm industry Read More
Flooded corn in Indiana
FertilizerBoth Wet and Dry Conditions Threaten Nitrogen Loss
May 15, 2017
The weather is notoriously unpredictable, leading to challenges for planting, harvesting and applying the nitrogen (N) your corn crop needs. Read More
farmer Kip Tom
Precision AgAg Tech: On the Cusp of Something Big?
May 15, 2017
The investment and ag-tech sectors’ continuing courtship of agriculture, smoldering for three or four years now, was well in evidence at Read More
AGCO Ratliff featured
Eric SfiligojRemembering Robert Ratliff
May 15, 2017
With all the fast-paced happenings in agriculture this spring, with multiple mergers in the works and planting season in full Read More
Greg Musson, Gar Tootelian
ManagementOpinion: Shaking Your Perspective in Ag Retail
May 12, 2017
Some of you I’m sure have encountered our recently retired salesman extraordinaire, Dan Bellanger. He worked in the industry for Read More