Pest Pressure Bears Down On #PFTour19 Scouts

01:19PM Aug 19, 2019
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From insects to disease to weeds, Pro Farmer Crop Tour scouts are seeing signs of damage that will impact not only this year’s crop but future crops, too. For example, weeds are creating devastating weed seed banks, disease will fester in crop residue and insect pests will lay eggs that hatch in future crops.

“We are seeing some issues with [disease] in the corn crop,” said AgriTalk Host Chip Flory, who was traveling with the western leg of the Pro Farmer Crop Tour in South Dakota this morning. “There are some diseases our here, bacterial diseases. I think it goes back to that July 20 windstorm that blew through. When you rip the leaves, that gives an entry point to some of the disease pressure.”

Flory anticipates it’s Goss’s wilt in South Dakota corn fields—a sometimes devastating bacterial disease. Late planting might have provided soybeans with an unexpected benefit, however, as scouts aren’t seeing sudden death (SDS) pressure.

“Throughout the last couple of years, we keep hearing about SDS and disease pressure in soybeans,” Flory said. “One of the reasons we’ve seen as much disease in soybeans as we have in recent years is because of the earlier planting date. So now, the further behind the crop the further behind the development of disease in these soybeans.”

Scouts are reporting heavy corn rootworm pressure, too.

First Ohio corn yield 169. Lots of goosenecking on dough stage corn. Plenty of cracks in the field and heavy root worm beetles. #pftour19

— Clinton Griffiths, AgDay Anchor 📺 🎙 🖊 (@ClintonReports) August 19, 2019

With the potential for extended diapause, farmers should be scouting to know what fields have the greatest corn rootworm pressure. Check out Ken Ferrie’s thoughts on higher rootworm populations here.

Weed pressure isn’t bad in planted fields—it’s the prevent plant that could be disastrous.

“The fields are clean for the most part,” said Pro Farmer Editor Brian Grete, who’s on the eastern leg of the Crop Tour. “We’ve seen a few fields with some weed pressure but not as bad as what I anticipated. The bigger thing is the prevent plant fields that haven’t been touched. Those are gonna be issues that they have to deal with next year.”

Seeing a lot of this in southern SD #pftour19

— Sherman Newlin (@ShermanNewlin) August 19, 2019

Farmers who have prevent plant acres or are near prevent plant fields, be on the lookout for weeds this fall and spring. Be prepared to take burndown action quickly, so the 2020 crop has a fighting chance against weeds.

Find complete Crop Tour route reports, market analysis and historical comparisons at

Follow along with today’s coverage:

Inconsistent, Sparse Fields Plague South Dakota

Soybeans Have a Long Way to Go in South Dakota

Corn Needs Extra Two to Three Weeks to Beat Frost

Grete: Immature Crops to Present Challenge in Ohio

‘Sobering’ Sights Greet #PFTour19 Scouts